CN1171698A - Audience-selective subtitle broadcasting device and method capable of transmitting bilingual subtitles - Google Patents

Abstract

Translated fromChinese

一种观众选择式双语字幕广播装置和方法,用于发送德语,法语以及英语等等两种语言的字幕信息,特别适用于播放电影的情况,按照这种方法,采用两个频道来发送双语字幕信息,在接收机中,从一个字形ROM中读出对应发送的双语字幕信息的字符数据,并将其存入存储部分,如果观众选择了一种模式,就将对应选定模式的字符数据与准备显示在屏幕上的电视视频信号混合。

An audience-selective bilingual subtitle broadcasting device and method, used for transmitting subtitle information in two languages such as German, French and English, especially suitable for playing movies, according to this method, two channels are used to transmit bilingual subtitle information Information, in the receiver, read the character data corresponding to the bilingual subtitle information sent from a font ROM, and store it in the storage part, if the viewer selects a mode, the character data corresponding to the selected mode will be combined with the The video signal is mixed with the TV ready to be displayed on the screen.

Description

Can transmit the spectators' selecting type captions broadcaster and the method for bilingual subtitles

The present invention relates to the spectators' selecting type captions broadcaster and the method for bilingual subtitles, particularly relate to a kind of spectators' selecting type captions broadcasting method that can transmit bilingual subtitles, this method receives the foreign language caption information that transmits by special-purpose foreign language captions channel, and from a font ROM (read-only memory), export character data, thereby when playing foreign film, can show the foreign language caption character corresponding to the caption information that is received.

Captions broadcast system in the television broadcasting can be categorized as open (open) caption system and closed circuit (closed) caption system, the former is an overlapping text signal in the effective period of TV signal, demonstrate highlight on the video screen by being chosen in of broadcasting station, announcement or the like, and the latter is the non-effective period in TV signal, just vertical blanking interval is encoded to caption signal, according to spectators' the display text captions on the screen that are chosen in.

Closed caption broadcasting was used in the U.S. from 1978, can be for the inconvenient people of hearing or because of there not being sign language just can not discern people's use of scene speech.This closed caption broadcasting can also be used for foreign language learning.

The United States Patent (USP) of authorizing in March, 1994 discloses the closed caption broadcast system of a kind of suitable demonstration roman character and syllabogram for 5,294, No. 982.In this patent, understand for example captions of Korean syllabogram in detail.Mode according to this patent, in order to broadcast the closed caption of Henkel (Hangul (Korean alphabet)), a Henkel (Hangul) character is separated into initially, middle and ending consonant phoneme, and send and the corresponding ASCII of each consonant phoneme (ASCII) sign indicating number.In receiving unit, receive ASCII character and to its decoding, then will be initial, middle and ending consonant phoneme conversion is to form and to demonstrate Henkel (Hangul) character.

Yet according to this habitual Henkel (Hangul) closed caption system, owing to need the data of three or four bytes could represent a Henkel (Hangul) character at least, its transmission speed and display speed are slow.In addition, because the position of a Henkel (Hangul) character is to retrieve by the combination of three or four byte datas, its decode procedure more complicated, thereby increased the cost of subtitle decoder.

In addition, habitual Henkel (Hangul) closed caption system is difficult to Chinese display character simultaneously, and Henkel (Hangul) and Japanese also are difficult to show simultaneously English, Russian and Greek, and show special symbol.

In addition, owing under the situation of display text information between additional information and the additional information that shows again subsequently, need to adopt a control code, between Word message and additional information, do not have independence, and the control system that is used in difference Word message display mode becomes complicated.If when receiving equipment is started working, do not receive the display mode control code, just can not display text information before receiving next control code.

In addition, because habitual system develops according to the television broadcasting condition of the U.S., it surpasses the accepting state that shows poor quality under 70% the geographical conditions at the such mountain area area of Korea S, has therefore reduced the quality that captions show.In addition, used foreign language caption information has only English when movie.

The objective of the invention is to solve the above-mentioned problems in the prior art, a kind of spectators' selecting type bilingual subtitles broadcasting method is provided, it can send the caption information of various foreign languages, German for example, French and English, particularly under the situation of movie, can receive caption information, and it is presented on the video screen.

To achieve these goals, the invention provides a kind of spectators' selecting type bilingual subtitles broadcasting method, be used for not influencing on the particular horizontal line that television video frequency signal sends the caption signal coding, this method may further comprise the steps: determine whether caption character information data of input data; Receive the count value of a coincidence counter; Determine that this count value is odd number or even number, if the count value of determining is an odd number, just determine that current field is an odd field, and input Henkel (Hangul) caption character information, if the count value of determining is an even number, just determine that current field is an even field, and input foreign language characters code is superimposed upon in the television video frequency signal that is ready for sending with corresponding foreign language caption character information and to caption character information coding and with it.

With reference to accompanying drawing the explanation of most preferred embodiment is made above-mentioned purpose of the present invention by following, other features and advantage thereof are more obvious.

Fig. 1 is the schematic block diagram that has adopted a television broadcasting system of spectators' selecting type captions broadcasting method of the present invention;

Fig. 2 is a schematic block diagram that is used to receive the television receiver of spectators' selecting type captions broadcasting of the present invention;

Fig. 3 is the schematic diagram according to caption signal structure of the present invention;

Fig. 4 A and 4B represent the schematic diagram according to the packet structure of caption signal of the present invention;

Fig. 5 is the schematic diagram that is used to explain control routine of the present invention;

Fig. 6 is the schematic diagram that is used to explain character code structure of the present invention, has represented a Henkel (Hangul) (completion) formula code table of filling a vacancy; And

Fig. 7 and 8 is the algorithm principle figure that comprise spectators' selecting type bilingual subtitles broadcasting of the present invention and method of reseptance.

Fig. 1 has represented to comprise the structure of the television broadcasting system of spectators' selecting type captions broadcasting method of the present invention.

Referring to Fig. 1, carry out mixing and amplification by 30 pairs of audio signals of an Audio Signal Processing part bymicrophone 10 inputs, provide it to TV (TV)signal modulating part 50 then.Amplify by the vision signals ofvideo camera 20 inputs and edit by 40 pairs of vision signal processing sections, provide it to TVsignal modulating part 50 then.TV signalmeter system part 50 adopts vestigial side-band modulation that audio signal is carried out frequency modulation(FM), vision signal is carried out amplitude modulation(PAM), the signal of amplitude modulation (AM) and the signal of frequency modulation (FM) are carried out frequency division multiplex and frequency inverted, thereby produce high-frequency signal.Amplify this high-frequency signal byhigh frequency output 60 then, it is passed through antenna transmission as TV signal.

The foreign language caption information of Henkel (Hangul) caption information and corresponding this caption character is input to captions encoding block (block) 70 by thecharacter information importation 71a that is located in the character information generation part 71.The control information that is used to control captions is imported by control information importation 71b.Character information importation 71a comprises a keyboard, is used to import Henkel (Hangul), English, Chinese, Japanese or the like character and special character, and the character information of response input and export syllabogram, for example Henkel of 2 bytes (Hangul) the formula code (KSC5601) of filling a vacancy.Control information importation 71b comprises for example mode selecting key, the keyboard of function selecting key or the like, and the control information of response input and export 7 binary codes.

Charactercode generation part 71c is used as caption character/additional information sign to the MSB (highest significant position) of each byte in the 2 byte character codes of input, and in additional information, replace MSB with " 0 ", thereby produce the packet of 18 character codes, add parity check bit for each byte then.

Controlroutine generation part 71d produces the packet of 18 control routines, it is high 4 and low 3 by 7 control informations of input are divided into, add a parity check bit for high 4,2 control routine is differentiated the position, and literal/additional mark, thereby produce a high byte, add first parity check bit for hanging down 3, second parity check bit, 2 control routine is differentiated the position, and a caption character/additional information sign, thereby produce a low byte, add a parity check bit for each byte that produces then.The details of this packet can be described hereinafter.

Apacket modulating part 74 adopts digital modulation mode to modulate the packet of charactercode generation part 71c or controlroutine generation part 71d generation.

The synchronizing signal that coincidence counterpart 72 receiving videosignals processing sections 40 provide, and it is resetted by a vertical synchronizing signal.72 pairs of horizontal-drive signals of coincidence counter part are counted, and calculate the number of scan line.Windowsignal generation part 73 receives the count value of coincidence counter part 71, and produce a window signal, this is the switch controlling signal of aswitch sections 75, is used for caption signal is superimposed upon the specific row of vision signal of visionsignal processing section 40 outputs.

The count value thatodd field detector 76 detectscoincidence counter part 72 is odd number or even number.If count value is an odd number,odd field detector 76 is with regard tocontrol switch part 79, Henkel (Hangul)caption information importation 77 is directly connected to character information generation part 71, make character information generation part 71 produce one with the corresponding character code of importing in advance of Henkel (Hangul) caption information.Then this character code is superimposed upon in the vision signal that is ready for sending.

If it is an even number thatodd field detector 76 has been determined count value,switch sections 79 just is switched, thereby foreign languagecaption information importation 78 is directly connected to character information generation part 71, make character information generation part 71 produce one with the corresponding character code of importing in advance of foreign language caption information.Then this character code is superimposed upon in the vision signal that is ready for sending.

Fig. 2 represents the structure of a television receiver, is used to receive spectators' selecting type captions broadcasting of the present invention.

Referring to Fig. 2, with the TV signal of tuner 110 specified channel of selection from the high-frequency signal that receives by antenna, to selected TV signal demodulation, and output audio signal and vision signal.120 pairs of audio signals of Audio Signal Processing part are carried out equilibrium and amplification, then it are outputed to a loud speaker 130.The 140 pairs of vision signals in vision signal processing section carry out brightness processed and colourity is handled, and export red (R), green (G), the vision signal of blue (B).Rgb video signal is provided for display driving part 160 by frequency mixer 150.Display driving part 160 these rgb video signals of response drive a CRT (cathode ray tube) 170, show corresponding image on the screen of CRT170.

In caption decoding piece (block) 200, by mould-number (A/D) transducer 210 vision signal is converted to digital signal, and this digital signal is input to a captions processing section 230.From vision signal, isolate vertical and synchronizing signal level with a sync separator 220 simultaneously, and synchronizing signal is outputed to captions processing section 230.

Captions processing section 230 produces a clock signal, and it is synchronous with the burst signal of handling in vision signal processing section 140, and extracts the caption data bag from the digital signal of A/D converter 210 outputs.Then, the decoded packet data of the 230 pairs of extractions in captions processing section, the control routine of response decoding is controlled the processing of captions, and the character code of response decoding, ROM240 reads character data from font (font), so that the character data of reading is deposited in demonstration storage area 250.Captions processing section 230 converts rgb video signal to being stored in the character data that shows in the storage area 250, and this rgb signal is delivered to frequency mixer 150.When systems control division divides 180 to work in this way, just when systems control division divides 180 instructions by the relevant captions of instruction importation 190 inputs to pass to captions processing section 230, data communication is just carried out in captions processing section 230, and response is controlled system from the control data of captions processing section 230.

Show that storage area 250 is made of Henkel (Hangul) caption information storage area 252 and foreign language caption information storage area 254.

Determine that by captions control section 230 from the data of A/D converter 210 inputs be Henkel (Hangul) caption information or foreign language caption information, and control above-mentioned storage area 252 and 254, store the information of input therein respectively.

Then, captions control section 230 is read the information that is stored in the storage area 250 according to the pattern of selecting by instruction importation 190, and from font (font) ROM240, read character data, so that the character data of reading is outputed on the screen corresponding to this information.

The concrete structure of the caption signal that uses in above-mentioned captions broadcasting and receiving system below will be described.

In order to send caption data, can utilize vertical blanking period the 10th to 20, effective video in the cycle the 21st and the 262nd the row in a row.In addition, in order to improve message transmission rate or other purposes, the row of use can be above one.Yet in captions broadcasting, the whole field data of transmission is nonsensical, therefore, does not consider in advance.

The transmission bit rate of caption data should be in the scope of 447443.125bps ± 125bps, and the maximum that long-term (long-term) changes should be less than ± 196 (0.0125bps).Only when sending colour TV signal, just need use caption data signal.In addition, transmission bit rate be confirmed as chrominance subcarrier frequency fsc (3579545 ± 10Hz) 1/8.And the frequency of chrominance carrier and burst signal is synchronous.Chrominance carrier should have continuous phase place between scan line.If because the picture editting has caused the discontinuous chrominance carrier of phase place of chrominance carrier should realize Frequency Synchronization with the burst signal on the corresponding line at least.

The Ditital modulation method that employing is called BPSK (binary phase shift keying) or PRK (phase reversal keying) comes modulating data, therein with 0 degree phase place, the one-period of the sine wave of fsc/8 (447.443KHz) frequency is represented logical one, and with 180 degree phase places, the one-period of the sine wave of fsc/8 (447.443KHz) frequency is represented logical zero.The maximum magnitude of phase deviation is ± 10.Best signal waveform can change according to the spectral characteristic of television channel, vide infra.Yet, because basic limit band frequency, the BPSK waveform severe distortion can occur in the zone of occurrence logic value transformation (transtion), therefore, in broadcasting, need to use by cut-off frequency and be the 2nd Butterworth filter of 3.5MHz and the waveform that carries out phase compensation when the broadcasting subsequently.The impulse response of preparing the Butterworth filter of employing can be expressed as:

Because the waveform of caption signal is not a kind of NRZ (nonreturn-to-zero) waveform, but therefore a pure sine wave does not need to adopt above-mentioned standard.Yet, consider that the such mountain area area of Korea S surpasses 70% geographical conditions, in order to enlarge range of receiving, sinusoidal wave maximum is confirmed as 90 ± 5IRE.Because the pass-band performance of filter although define the maximum amplitude of normal data signal, overtravel (overshoot) still may occur in the data-signal, the maximum value of this overtravel is confirmed as 5IRE.

Referring to Fig. 3, the data line of caption signal (line) is the bit clock synchronizing signal 302 by 6 cycles, literal initial signal 304, and 18 data line (line), 306 formations.

Extract the bit clock synchronizing signal 302 of 6 cycle sine waves by caption decoding piece (block), and adopt the frequency of fsc/4 (894.886KHz) to read this bit period of 18 bit data.If the phase place of the chrominance carrier of respective scanned row is 0 degree, the distance of the central point OH of the starting point of bit clock synchronizing signal 302 and horizontal-drive signal trailing edge is exactly 9.5 μ s (34 cycles of burst signal), simultaneously, if the phase place of the chrominance carrier of respective scan line is 180 degree, the distance of the central point OH of its starting point and horizontal-drive signal trailing edge is exactly 9.64 μ s (34.5 cycles of burst signal).The frequency of the burst signal of bit clock synchronizing signal and respective scanned row is synchronous, therefore just can extract the bit clock synchronizing signal from burst signal.

The frequency of literal initial signal 304 is fsc/16 (223.722KHz), and is equivalent to the one-period that phase place is the sine wave of 180 degree.Literal initial signal 304 is represented the initial of 18 bit data bags.

Data line 306 comprises 18, and its bit rate is fsc/8 (447.443KHz).Come modulating data capable 306 with the BPSK modulation system.

Referring to Fig. 4 A and 4B, packet comprises three parts, just is the parity check P of unit with the literal, caption character/additional information sign C/T and a code value.D0 represents low word to D8, and D9-D17 represents high-word, and the D17 representative is used for the at first even parity of detected transmission error.D7 and D16 are caption character/additional information signs, and for the situation of caption character, this value is " 0 ", if additional information, this value is exactly " 1 ".The value of D7 and D16 should conform to each other (coinciok).These signs are used to keep the priority order of literal.D0 represents code value to D6 and D9 to D15.If D5, D6, the code value of D14 and D15 is " 0 ", just it is defined as control routine.Otherwise just it is considered as character code.

Referring to Fig. 4 A, the D1 of 7 control routines, D2, D3, D9, D10, D11 and D12 are the control routine data bit, and D0, D4, D8 and D13 are the parity check bits of control routine data bit.3 code values that Fig. 5 illustrates low word are used to specify following five kinds of functions: the colored appointment, and character attibute and last rolling, display packing and rolling down, the moving of position, and matrix position is specified.4 code values of control routine high-word have been specified 16 kinds of subfunctions of above-mentioned various functions.D0 herein is D1, D2, and the parity check of D3 and D4, D4 is D1, D2, the parity check of D10 and D11, and D13 is D9, D10, the parity check of D11 and D12.

In addition, for the safety of data receives, control routine is double transmission, and horizontal/vertical to write appointment codes and matrix position appointment codes be according to the transmission in 4 second cycle.The details of this control routine below can be described.

Referring to Fig. 6, character code has comprised the data bit to D6 and high-word D9 to KSC 5601 codes of D15 by low word D0.D8 is the even parity of D0 to D7.

Do not use ASCII character in the present invention.D0 is the low byte except that MSB in 7 corresponding KSC 5601 of D6, and D9 is to 7 correspondences of D15 high byte except that MSB wherein.In Hangul shown in Figure 6 fills a vacancy formula code (KSC 5601) to a1 and a2 capable (spcial character), a3 capable (English character), a4 capable (ending consonant phoneme), a5 capable (Greek), aa is to ab capable (Japanese katakana/hiragana), ac capable (Russian), ad capable (German), ae capable (French), b0 has made restriction to capable Henkel of c8 (Hangul) and ca to the use of fd (Chinese character).For character sends once this character code.

As mentioned above, Henkel (Hangul) captions can use a specific scan line that limits in the field to send, and therefore, have at least a transmission scan line to be restricted to a channel in one.The TV of TSC-system formula adopts scanning alternately to constitute two fields, therefore, can use two channels when broadcast subtitle.Specifically, can use the caption character that constitutes by bilingual of system frequently of multitone for example.In this case, the odd field channel is used to Henkel (Hangul) caption character, and the even field channel is used to the caption character of foreign language.The control routine that sends by each channel adopts identical code-group (codeset), and all character codes all are included among the KSC 5601.

Two types information be can send by the captions broadcasting channel, and its analysis and display packing changed according to information type.A kind of is the caption character of vision signal about broadcasting, and another kind is and be presented at the additional information TEXT that the broadcast singal content on the screen has nothing to do.

In the LSWord and MSWord of packet structure, if full caption character/additional information value of statistical indicant is " 0 ", just think that this code is to be used to show caption character, and no matter this code is control routine or character code.In this case, the literal that matches with audio signal is shown as captions, covers a part of image.

Use the caption character of about 2 to 5 row (rows) simultaneously.In order to show continuous literal, upwards roll in the captions viewing area that caption character need be scheduled on screen, or on presumptive area, show new caption character after the disappearance of caption character in front.

When sending caption signal by a channel, the character of several language can mix, or sends Henkel (Hangul) character or outer Chinese character specially by this channel.If send captions by two channels, just channel is divided into one and is specifically designed to Henkel (Hangul), another is specifically designed to foreign language.

Because caption character need match with audio-frequency information, caption character has preference to additional information when the channel that to take with two words be the unit.

In the LSWord and MSWord of packet, if the value of statistical indicant of caption character/additional information all is " 1 ", just think that this code is to be used for display additional information, and no matter this code is control routine or character code.This additional information resembles and is displayed on the whole screen the compunication, and no matter the content of broadcast singal.Do not need to use rolling function at this moment.

If send additional informations, do not need to resemble and cut apart additional information the caption information by two channels.Additional information can take these channels in any time that this channel does not carry caption information, still, sends caption character if desired, just needs transfer the right to occupation of right channel to captions immediately.Additional information only just can take this channel after the end of transmission of caption character.

Fig. 7 is the algorithm principle figure that comprises spectators' selecting type bilingual subtitles broadcasting method of the present invention, and this method is used on a particular horizontal line that does not influence the television video frequency signal transmission caption information being encoded.Referring to Fig. 7, to check that at first the input data are caption character information (S8), and receive the count value (step S10) of coincidence counter.To determine that then count value is odd number (step S20), if, just import Henkel (Hangul) caption information (step S30), if not, input foreign language character code and foreign language caption information (step S40) just become.After this caption information is converted to code, and with the video signal mixture that sends (step 50).

Fig. 8 is the algorithm principle figure that comprises spectators' selecting type bilingual subtitles method of reseptance of the present invention, and this method is used for receiving and shows that selectively caption information, this caption information are to encode not influencing on the particular horizontal line of television video frequency signal.Referring to Fig. 8, from the television video frequency signal that receives, extract caption signal (step S21), the caption signal that extracts is reverted to numerical data (step S22), and detect the error (step S23) of restore data.To determine that then these data are Henkel (Hangul) caption character information (step S24).If these data are confirmed as Henkel (Hangul) caption character information, just from font ROM240, read the character data of corresponding this Henkel (Hangul) caption character information, and deposit it in Hangul caption information storage part 252 (step S25), if these data are confirmed as the foreign language caption Word message, just from font ROM240, read the character data of corresponding this foreign language caption Word message, then it is deposited in foreign language caption information storage part 254 (step S26).To determine that then by the pattern that instruction importation 190 is selected be Henkel (Hangul) subtitling mode (step S27).If, just from Henkel (Hangul) caption information storage part 252, read character data (step S28), then with the video signal mixture of preparing to output on the screen (step S29), if not, just from foreign language caption information storage part 254, read character data (step S30), then with the video signal mixture of preparing to output on the screen (step S29).

In the multitone frequency system of film one class, can use odd field and the macaronic closed caption of even field channel broadcasting.In this case, the kind that row (row) that can be by KSC 5601 number comes identifiable language shows in receiver then.When broadcasting a kind of caption character of language in the broadcasting station,, can show corresponding program in about one minute that begins in respective program as the multitone situation in the system frequently.

As mentioned above,, can send the caption information of various foreign languages according to the present invention, German for example, French, and our English of being familiar with, and it is presented on the video screen, particularly under the situation of movie.

Although the present invention comes description and interpretation with reference to its most preferred embodiment, those skilled in the art obviously can also change its form and details under the condition that does not break away from spirit and scope of the invention.

Claims (18)

Translated fromChinese

1.一种双语字幕广播方法，用于在不影响被发送的电视视频信号的一条特定水平线上对字幕信号编码，该方法包括以下步骤：1. A method for broadcasting bilingual subtitles, used to encode subtitle signals on a specific horizontal line that does not affect the transmitted TV video signal, the method may further comprise the steps:确定输入数据是否字幕文字信息数据；Determine whether the input data is subtitle text information data;接收所述电视视频信号同步计数器的计数值；receiving the count value of the synchronous counter of the television video signal;确定所述计数值是奇数或是偶数；determining whether the count value is odd or even;如果确定所述计数值是奇数，就将所述电视视频信号中当前的场识别为奇数场，并且作出响应，从所述字幕文字信息数据中产生第一语言字幕文字信息；identifying a current field in the television video signal as an odd field if the count value is determined to be odd, and in response, generating subtitle text information in a first language from the subtitle text information data;如果确定所述计数值是偶数，就将所述当前的场识别为偶数场，并且作出响应，从所述字幕文字信息数据中产生第二语言字幕文字信息；以及identifying said current field as an even field if said count value is determined to be even, and in response, generating second language subtitle text information from said subtitle text information data; and在被发送的所述电视视频信号中将所述第一和第二语言字幕文字信息作为所述字幕信号进行编码，并进行叠加。In the transmitted television video signal, the subtitle text information in the first and second languages is encoded as the subtitle signal and superimposed.2.一种双语字幕广播方法，用于在不影响电视视频信号的一条特定水平线上对字幕信号编码，该方法包括以下步骤：2. A method for broadcasting bilingual subtitles, used to encode subtitle signals on a specific horizontal line that does not affect television video signals, the method may further comprise the steps:确定所述电视视频信号的奇数和偶数场；以及determining odd and even fields of said television video signal; and把第一语言的字幕字符信息作为所述字幕信号在所述电视视频信号的所述奇数场中进行编码，并且把第二语言的字幕字符信息作为所述字幕信号在所述电视视频信号的所述偶数场中进行编码；以及encoding subtitle character information in a first language as the subtitle signal in the odd fields of the television video signal, and encoding subtitle character information in a second language as the subtitle signal in all fields of the television video signal encode in the above even fields; and发送用所述字幕信号编码的所述电视视频信号。The television video signal encoded with the subtitle signal is transmitted.3.一种双语字幕接收方法，用于对在不影响电视视频信号的一条特定水平线上编码的字幕信号进行解码，其中，在所述电视视频信号的所述奇数场中将第一语言的字幕字符信息作为字幕信号编码，并且在所述电视视频信号的所述偶数场中将第二语言的字幕字符信息作为字幕信号编码，该方法包括以下步骤：3. A bilingual subtitle receiving method for decoding a subtitle signal coded on a specific horizontal line that does not affect a television video signal, wherein subtitles in a first language are included in said odd fields of said television video signal The character information is coded as a subtitle signal, and the subtitle character information of a second language is coded as a subtitle signal in the even field of the television video signal, the method comprising the following steps:接收具有用所述字幕信号编码的所述电视视频信号；receiving said television video signal encoded with said subtitle signal;预先存储所述第一和第二语言的字符数据；pre-stored character data in said first and second languages;按照对应所述第一和第二语言之一的所述字幕字符数据读出所述第一和第二语言的所述字符数据；reading said character data in said first and second languages in accordance with said subtitle character data corresponding to one of said first and second languages;根据一种选定的模式显示读出的第一或第二语言的字符数据，由所述选定模式来指示将要显示所述第一和第二语言字符数据中的哪一个。The read character data in the first or second language is displayed according to a selected mode indicating which of the first and second language character data is to be displayed.4.一种双语字幕接收方法，用于对在不影响电视视频信号的一条特定水平线上编码的字幕信号进行解码，该方法包括以下步骤：4. A bilingual subtitle receiving method is used to decode the subtitle signal encoded on a specific horizontal line that does not affect the TV video signal, the method may further comprise the steps:从所述电视视频信号中提取所述字幕信号；extracting said subtitle signal from said television video signal;确定所述字幕信号是否包括第一语言字幕文字信息；determining whether the subtitle signal includes subtitle text information in a first language;如果所述字幕信号包括所述第一语言字幕文字信息，就把预先存储的所述第一语言的字符数据读出到第一存储部分；If the subtitle signal includes subtitle text information in the first language, read out the pre-stored character data in the first language to the first storage part;如果所述字幕信号不包括所述第一语言字幕文字信息，就把预先存储的所述第二语言的字符数据读出到第二存储部分；If the subtitle signal does not include subtitle text information in the first language, read out the pre-stored character data in the second language to the second storage part;确定选择的一种字幕模式，用该模式指示出是要显示所述第一语言的所述字符数据或是所述第二语言的所述字符数据；以及determining a selected subtitle mode indicating whether said character data in said first language or said character data in said second language is to be displayed; and如果所述字幕模式指示出需要显示所述第一语言字符数据，就从所述第一存储部分读出所述第一语言字符数据，如果所述字幕模式指示出需要显示所述第二语言字符数据，就从所述第二存储部分读出所述第二语言字符数据。If the subtitle mode indicates that the first language character data needs to be displayed, the first language character data is read from the first storage portion, and if the subtitle mode indicates that the second language character needs to be displayed data, the character data of the second language is read from the second storage section.5.一种闭路字幕广播方法包括以下步骤：5. A closed caption broadcasting method comprises the following steps:识别电视视频信号的奇数和偶数场；Identify odd and even fields of a television video signal;接收第一语言的第一语言字符信息和相应的控制信息，并且接收第二语言的第二语言字符信息和相应的控制信息；receiving first language character information and corresponding control information in a first language, and receiving second language character information and corresponding control information in a second language;如果所述场是所述奇数场之一，就将所述第一语言控制信息和第一模式控制位及第一奇偶校验位进行组合，产生2个字的第一语言控制代码，并且将所述第一语言字符信息和第二模式控制位及第二奇偶校验位进行组合，产生包括音节字符填空类型代码的2个字的第一语言字符代码；If the field is one of the odd fields, combine the first language control information with the first mode control bit and the first parity bit to generate a 2-word first language control code, and The first language character information is combined with the second mode control bit and the second parity bit to generate the first language character code of 2 words including syllable characters filling in the blank type code;如果所述场是所述偶数场之一，就将第二语言控制信息和第三模式控制位及第三奇偶校验位进行组合，产生2个字的第二语言控制代码，并且将所述第二语言字符信息和第四模式控制位及第四奇偶校验位进行组合，产生包括所述音节字符填空类型代码的2个字的第二语言字符代码；If the field is one of the even fields, the second language control information is combined with the third mode control bit and the third parity bit to generate a 2-word second language control code, and the The second language character information is combined with the fourth mode control bit and the fourth parity bit to generate the second language character code of 2 words comprising the syllable character filling-in-the-blank type code;响应所述第一语言控制代码及产生的字符代码，对所述第一语言控制代码和字符代码进行数字调制，从而产生第一数字调制字幕信号，并且响应所述第二语言控制代码及产生的字符代码，对所述第二语言控制代码和字符代码进行数字调制，从而产生第二数字调制字幕信号；以及In response to the first language control code and the generated character code, digitally modulate the first language control code and the character code to generate a first digitally modulated subtitle signal, and in response to the second language control code and the generated a character code, digitally modulating the second language control code and the character code, thereby generating a second digitally modulated subtitle signal; and在不影响所述电视视频信号的所述电视视频信号的扫描线中将所述第一和第二数字调制字幕信号作为所述字幕信号进行编码，以便发送所述字幕信号。The first and second digitally modulated subtitle signals are encoded as the subtitle signals in scan lines of the television video signal that do not affect the television video signal, so that the subtitle signals are transmitted.6.按照权利要求5的闭路字幕广播方法，其中，所述2个字各自由9个位构成。6. The closed caption broadcasting method according to claim 5, wherein each of said 2 words is composed of 9 bits.7.按照权利要求5的闭路字幕广播方法，其中，所述音节字符填空类型代码是一种Hangul填空式KSC 5601代码。7. The closed caption broadcasting method according to claim 5, wherein said syllabic character blank-fill type code is a Hangul fill-in-blank type KSC 5601 code.8.按照权利要求5的闭路字幕广播方法，其中，所述数字调制字幕信号包括：8. The closed caption broadcasting method according to claim 5, wherein said digitally modulated caption signal comprises:一个位时钟同步信号，它是一种预定周期的第一正弦波，并且其频率是通过按照预定比率划分所述电视视频信号的色度副载波而获得的；a bit clock synchronization signal which is a first sine wave of a predetermined period and whose frequency is obtained by dividing the chroma subcarrier of said television video signal by a predetermined ratio;一个字起始信号，它是一个周期的第二正弦波，并且其频率是通过按照预定比率划分所述位时钟同步信号而获得的；以及a word start signal which is a second sine wave of one period and whose frequency is obtained by dividing said bit clock synchronization signal by a predetermined ratio; and一个调制到第三正弦波上的18-位数据信号，第三正弦波的频率低于所述位时钟同步信号的所述频率，但是高于所述字起始信号的所述频率。an 18-bit data signal modulated onto a third sine wave having a frequency lower than said frequency of said bit clock synchronization signal but higher than said frequency of said word start signal.9.按照权利要求8的闭路字幕广播方法，其中，在对所述第一语言控制代码及字符代码和所述第二语言控制代码及字符代码进行数字调制的步骤中包括用二进制移相键控BPSK方法对所述各个数据信号进行调制。9. The closed caption broadcasting method according to claim 8, wherein said step of digitally modulating said first language control code and character code and said second language control code and character code comprises using binary phase shift keying The BPSK method modulates the respective data signals.10.按照权利要求8的闭路字幕广播方法，其中，所述位时钟同步信号是由6个周期构成的。10. The closed caption broadcasting method according to claim 8, wherein said bit clock synchronization signal is composed of 6 periods.11.按照权利要求8的闭路字幕广播方法，其中，所述第一和第二字幕信号各自的最高电平是90±IRE。11. The closed caption broadcasting method according to claim 8, wherein the respective highest levels of said first and second caption signals are 90±IRE.12.一种闭路字幕广播接收方法，包括以下步骤：12. A closed caption broadcast receiving method, comprising the following steps:在接收的电视信号中检测同步信号；detecting a sync signal in a received television signal;响应所述检测的同步信号，提取在所述电视信号的扫描线中编码的字幕信号；extracting a subtitle signal encoded in a scanline of said television signal in response to said detected synchronization signal;从所述提取的字幕信号中恢复数字数据；recovering digital data from said extracted subtitle signal;检测所述恢复数据的误差；detecting errors in the recovered data;在一个只读存储器ROM中预先存储第一语言数据和第二语言数据；Pre-store the first language data and the second language data in a read-only memory ROM;按照在所述恢复数据中编码的第一和第二语言字幕文字信息从所述ROM中读出所述第一和第二语言数据，并且存入相应的第一和第二语言存储部分；以及reading said first and second language data from said ROM according to first and second language subtitle text information encoded in said restored data, and storing into corresponding first and second language storage parts; and从用户接收一种字幕模式，由用户指示出需要显示的是所述第一和第二语言数据中的哪一种；以及receiving a subtitle mode from a user indicating which of said first and second language data is to be displayed; and如果所述字幕模式指示出需要显示所述第一语言数据，就从所述第一语言存储部分读出所述第一语言数据，如果所述字幕模式指示出需要显示所述第二语言数据，就从所述第二语言存储部分读出所述第二语言数据。If the subtitle mode indicates that the first language data needs to be displayed, reading the first language data from the first language storage part, if the subtitle mode indicates that the second language data needs to be displayed, The second language data is then read out from the second language storage section.13.一种在电视图像信号中对字幕信息编码的闭路字幕广播装置包括：13. A closed caption broadcasting apparatus for encoding caption information in a television image signal comprising:第一语言信息字幕信息输入部分，用于接收第一语言的字幕数据；The first language information subtitle information input part is used to receive the subtitle data of the first language;第二语言信息字幕信息输入部分，用于接收第二语言的字幕数据；The second language information subtitle information input part is used to receive the subtitle data of the second language;用于检测所述电视图像信号的奇数和偶数场的场检测器。A field detector for detecting odd and even fields of said television image signal.第一开关单元，根据检测所述奇偶场的所述场检测器来交替地分别允许发送所述第一和第二语言字幕数据；a first switching unit alternately allowing transmission of subtitle data in the first and second languages, respectively, according to the field detector detecting the parity field;第一语言信息输入单元，如果所述第一开关单元允许发送所述第一语言字幕数据，就产生第一语言控制信息和字符信息；a first language information input unit that generates first language control information and character information if the first switch unit allows transmission of the first language subtitle data;第二语言信息输入单元，如果所述第一开关单元允许发送所述第二语言字幕数据，就产生第二语言控制信息和字符信息；a second language information input unit that generates second language control information and character information if the first switch unit allows transmission of the second language subtitle data;字幕产生单元，将所述第一语言控制信息和第一模式控制位及第一奇偶校验位进行组合，产生两个字的第一语言控制代码，将所述第一语言字符信息和第二模式控制位及第二奇偶校验位进行组合，产生包括音节字符填空类型代码的两个字的第一语言字符代码，将所述第二语言控制信息和第三模式控制位及第三奇偶校验位进行组合，产生两个字的第二语言控制代码，并且将所述第二语言字符信息和第四模式控制位及第四奇偶校验位进行组合，产生包括所述音节字符填空类型代码的两个字的第二语言字符代码；以及The subtitle generation unit combines the first language control information with the first mode control bit and the first parity bit to generate a two-word first language control code, and combines the first language character information with the second The mode control bit and the second parity check bit are combined to generate the first language character code of two words including syllable characters filling in the blank type code, and the second language control information and the third mode control bit and the third parity check bit are combined. Check digits are combined to generate a second language control code of two words, and the second language character information is combined with the fourth mode control bit and the fourth parity bit to generate a blank type code including the syllable character The two-word second language character code for the ; and一个编码器，用于在所述电视图像信号的所述奇数场频道内为所述第一语言控制和字符代码编码，并且在所述电视图像信号的所述偶数场频道内为所述第二语言控制和字符代码编码。an encoder for encoding said first language control and character codes in said odd field channels of said television image signal and for said second language control and character codes in said even field channels of said television image signal Language control and character code encoding.14.按照权利要求13的闭路字幕广播装置，其中，所述编码器包括：14. The closed caption broadcasting apparatus according to claim 13, wherein said encoder comprises:一个同步计数器单元，用于对所述电视图像信号的水平同步信号计数，并且由所述电视图像信号的垂直同步信号使其计数复位；A synchronous counter unit, used for counting the horizontal synchronous signal of the TV image signal, and reset its count by the vertical synchronous signal of the TV image signal;一个窗口信号发生单元，用于根据所述水平同步信号的计数而产生开关控制信号；A window signal generation unit, used to generate switch control signals according to the count of the horizontal synchronization signal;一个场判别单元，它通过在所述电视图像信号的奇数场和偶数场之间进行鉴别而产生一个场信号；a field discrimination unit which generates a field signal by discriminating between odd and even fields of said television image signal;第二开关单元，它根据所述场信号来交替地允许发送所述第一语言控制和字符代码和所述二语言控制和字符代码，从而产生字幕信号；以及a second switch unit which alternately allows transmission of said first language control and character code and said second language control and character code according to said field signal, thereby generating a subtitle signal; and第三开关单元，用于根据所述开关控制信号来交替地允许发送所述字幕信号和所述电视图像信号。The third switch unit is configured to alternately allow the subtitle signal and the TV image signal to be sent according to the switch control signal.15.按照权利要求13的闭路字幕广播装置，其中，所述音节字符填空类型代码是一种Hangul填空式KCS 5601代码。15. The closed caption broadcasting apparatus according to claim 13, wherein said syllabic character blank-fill type code is a Hangul fill-in-blank KCS 5601 code.16.按照权利要求13的闭路字幕广播装置，其中，所述字幕信号包括：16. The closed caption broadcasting apparatus according to claim 13, wherein said caption signal comprises:一个位时钟同步信号，它是一种预定周期的第一正弦波，并且其频率是通过按照预定比率划分所述电视信号的色度副载波而获得的；a bit clock synchronization signal which is a first sine wave of a predetermined period and whose frequency is obtained by dividing the chroma subcarrier of said television signal by a predetermined ratio;一个字起始信号，它是一个周期的第二正弦波，并且其频率是通过按照预定比率划分所述位时钟同步信号而获得的；以及a word start signal which is a second sine wave of one period and whose frequency is obtained by dividing said bit clock synchronization signal by a predetermined ratio; and一个调制到正弦波上的18-位数据信号，该正弦波的频率低于所述位时钟同步信号的所述频率，但是高于所述字起始信号的所述频率。An 18-bit data signal modulated onto a sine wave having a frequency lower than said frequency of said bit clock sync signal but higher than said frequency of said word start signal.17.按照权利要求13的闭路字幕广播装置，其中，进一步包括：17. The closed caption broadcasting apparatus according to claim 13, further comprising:一个发射机，用于把用所述字幕信号编码的所述电视图像信号作为发射信号来发射；a transmitter for transmitting said television image signal encoded with said subtitle signal as a transmission signal;一个接收单元，用于把所述发射信号作为接收的电视信号来接收；a receiving unit for receiving said transmitted signal as a received television signal;一个同步分离器，用于检测所接收的电视信号的水平和垂直同步信号；a sync separator for detecting the horizontal and vertical sync signals of the received television signal;一个数据提取器，用于响应所接收的电视信号的所述垂直同步信号，对所接收的电视信号的所述水平同步信号计数，从而提取在所述电视信号中编码的所述字幕信号；a data extractor for, responsive to said vertical synchronization signal of the received television signal, counting said horizontal synchronization signal of the received television signal, thereby extracting said subtitle signal encoded in said television signal;一个存储器单元，用于预先存储第一语言字幕数据和第二语言字幕数据；a memory unit for pre-storing first language subtitle data and second language subtitle data;一个字幕控制单元，用于对提取的所述字幕信号中的第一语言字幕信息的第一语言字符代码和提取的所述字幕信号中的第二语言字幕信息的第二语言字符代码解码，并且根据所解码的第一和第二语言字符代码分别从所述存储器单元读出所述第一语言字符数据和第二语言字符数据；a subtitle control unit, for decoding the first language character code of the first language subtitle information extracted in the subtitle signal and the extracted second language character code of the second language subtitle information in the subtitle signal, and reading said first language character data and second language character data from said memory unit according to the decoded first and second language character codes, respectively;一个显示存储部分，用于存储所述第一和第二语言字幕数据；以及a display storage section for storing said first and second language subtitle data; and一个接收字幕模式的指令输入部分，用于控制所述字幕控制单元，从所述存储器单元读出所述第一和第二语言字幕数据之一。An instruction input section receiving a subtitle mode for controlling said subtitle control unit to read out one of said first and second language subtitle data from said memory unit.18.在电视图像信号中对字幕信息编码和解码的闭路字幕装置，包括：18. Closed captioning apparatus for encoding and decoding caption information in television image signals, comprising:一个发射单元，它包括a launch unit, which includes第一语言信息字幕信息输入部分，用于接收第一语言的字幕数据，a first language information subtitle information input part for receiving subtitle data in a first language,第二语言信息字幕信息输入部分，用于接收第二语言的字幕数据，a second language information subtitle information input section for receiving subtitle data in a second language,一个场检测器，用于检测所述电视图像信号的奇数和偶数场；a field detector for detecting odd and even fields of said television image signal;第一开关单元，根据检测所述奇、偶场的所述场的检测器来交替地分别允许发送所述第一和第二语言字幕数据，a first switching unit alternately allowing transmission of subtitle data in said first and second languages respectively according to said field detectors detecting said odd and even fields,第一语言信息输入单元，如果所述第一开关单元允许发送所述第一语言字幕数据，就产生第一语言控制信息和字符信息，a first language information input unit that generates first language control information and character information if said first switch unit allows transmission of said first language subtitle data,第二语言信息输入单元，如果所述第一开关单元允许发送所述第二语言字幕数据，就产生第二语言控制信息和字符信息，a second language information input unit that generates second language control information and character information if said first switch unit permits transmission of said second language subtitle data,字幕产生单元，将所述第一语言控制信息和第一模式控制位及第一奇偶校验位进行组合，产生两个字的第一语言控制代码，将所述第一语言字符信息和第二模式控制位及第二奇偶校验位进行组合，产生包括音节字符填空类型代码的两个字的第一语言字符代码，将所述第二语言控制信息和第三模式控制位及第三奇偶校验位进行组合，产生两个字的第二语言控制代码，并且将所述第二语言字符信息和第四模式控制位及第四奇偶校验位进行组合，产生包括所述音节字符填空类型代码的两个字的第二语言字符代码，The subtitle generation unit combines the first language control information with the first mode control bit and the first parity bit to generate a two-word first language control code, and combines the first language character information with the second The mode control bit and the second parity check bit are combined to generate the first language character code of two words including syllable characters filling in the blank type code, and the second language control information and the third mode control bit and the third parity check bit are combined. Check digits are combined to generate a second language control code of two words, and the second language character information is combined with the fourth mode control bit and the fourth parity bit to generate a blank type code including the syllable character The two-word second language character code for ,一个编码器，用于在所述电视图像信号内的所述奇数场通道内为所述第一语言控制和字符代码编码，并且在所述电视图像信号的所述偶数场通道内为所述第二语言控制和字符代码编码，从而产生发射信号，以及an encoder for encoding said first language control and character codes in said odd field channels of said television image signal and said second language control and character codes in said even field channels of said television image signal Two language control and character code encodings to generate the transmit signal, and用于产生所述发射信号的发射机；以及a transmitter for generating said transmit signal; and一个接收单元包括A receiver unit includes一个接收单元，用于把所述发射信号作为接收电视信号来接收，a receiving unit for receiving said transmitted signal as a received television signal,一个同步分离器，用于检测所述接收电视信号的水平和垂直同步信号，a sync separator for detecting horizontal and vertical sync signals of said received television signal,一个数据提取器，用于响应所接收的电视信号的所述垂直同步信号，对所接收的电视信号的所述水平同步信号计数，从而提取在所述电视信号中编码的所述字幕信号，a data extractor for, responsive to said vertical synchronization signal of the received television signal, counting said horizontal synchronization signal of the received television signal, thereby extracting said subtitle signal encoded in said television signal,一个存储器单元，用于预先存储第一语言字幕数据和第二语言字幕数据，a memory unit for pre-storing first language subtitle data and second language subtitle data,一个字幕控制单元，用于对提取的所述字幕信号中的第一语言字幕信息的第一语言字符代码和提取的所述字幕信号中的第二语言字幕信息的第二语言字符代码解码，并且根据所解码的第一和第二语言字符代码分别从所述存储器单元读出所述第一语言字符数据和第二语言字符数据，a subtitle control unit, for decoding the first language character code of the first language subtitle information extracted in the subtitle signal and the extracted second language character code of the second language subtitle information in the subtitle signal, and reading said first language character data and second language character data from said memory unit based on the decoded first and second language character codes, respectively,一个显示存储部分，用于存储所述第一和第二语言字幕数据，以及a display storage section for storing said first and second language subtitle data, and一个接收字幕模式的指令输入部分，用于控制所述字幕控制单元，从所述存储器单元读出所述第一和第二语言字幕数据之一。An instruction input section receiving a subtitle mode for controlling said subtitle control unit to read out one of said first and second language subtitle data from said memory unit.

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