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JP2001045560A - Mobile phone system - Google Patents

Mobile phone system

Info

Publication number
JP2001045560A
JP2001045560AJP11214997AJP21499799AJP2001045560AJP 2001045560 AJP2001045560 AJP 2001045560AJP 11214997 AJP11214997 AJP 11214997AJP 21499799 AJP21499799 AJP 21499799AJP 2001045560 AJP2001045560 AJP 2001045560A
Authority
JP
Japan
Prior art keywords
voice data
voice
memory
stored
fifo memory
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11214997A
Other languages
Japanese (ja)
Inventor
Takeshi Ishizuka
雄志 石塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera CorpfiledCriticalKyocera Corp
Priority to JP11214997ApriorityCriticalpatent/JP2001045560A/en
Publication of JP2001045560ApublicationCriticalpatent/JP2001045560A/en
Pendinglegal-statusCriticalCurrent

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Abstract

PROBLEM TO BE SOLVED: To continue a speech while reducing a sense of incongruity to a talker by storing voice data to a memory at the start-up of communication or at detection of silencing and reproducing the voice data on the basis of the voice data stored in the memory when there are no voice data in the case of hand- over or at channel switching. SOLUTION: At the start-up of a speech, reproduction of voice data is not immediately started but stored in an FIFO memory 7. After storage of data for a prescribed time without having effect on conversation, the voice data stored in the FIFO memory 7 are fed to a voice processing section 8, which reproduces the voice data. At the start-up of hand-over or switching of channels, although no voice data come from a base station, the voice output is muted in this case when there are no voice data stored in the FIFO memory 7. At the end of hand-over or channel switching, when a speech from the base station is restarted and silencing is detected, storage of the voice data is started again in the FIFO memory 7. When voiced sound is detected, the voice data are immediately reproduced and outputted.

Description

Translated fromJapanese
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は携帯電話などの無線
電話回線を使用した電話機に関し、特にチャンネル切換
えやハンドオーバ−時に発生する無音時間の違和感の低
減に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone using a wireless telephone line such as a portable telephone, and more particularly to a reduction in discomfort caused by a silent period occurring at the time of channel switching or handover.

【0002】[0002]

【従来の技術】携帯電話やPHSなどにおいて、受信電
界強度が予め設定された規定値よりも低下した場合に
は、音声通信を一時的に中断してハンドオーバー処理を
行う。通話チャンネルを制御チャンネルに切換え、基地
局から定期的に間欠送信される制御信号を待ち受け、制
御信号に含まれるCS識別信号の受信と受信電界強度の
測定を行い、最も受信電界強度の大きい基地局を移動先
の基地局として音声通信を再開する。
2. Description of the Related Art In a portable telephone, a PHS, or the like, when the received electric field strength falls below a predetermined value, voice communication is temporarily interrupted to perform a handover process. The communication channel is switched to the control channel, a control signal periodically intermittently transmitted from the base station is awaited, the CS identification signal included in the control signal is received, and the reception field strength is measured. Is used as a destination base station to resume voice communication.

【0003】このハンドオーバやチャネル切替時には切
替動作にともない音声通信を行う事ができず、この音声
通信を出来ない時間には音声ミュートを行うかあるいは
疑似雑音を発生させていた。
[0003] At the time of handover or channel switching, voice communication cannot be performed along with the switching operation, and during the time when the voice communication cannot be performed, voice mute is performed or pseudo noise is generated.

【0004】[0004]

【発明が解決しようとする課題】上記のようにハンドオ
ーバーやチャンネル切換え処理で音声通信を中断し、音
声ミュート処理や疑似雑音を発生した場合、音声が途切
れることとなり通話者に違和感や不快感を感じさせると
いう問題点を有していた。
As described above, when the voice communication is interrupted by the handover or the channel switching process and the voice mute process or the pseudo noise is generated, the voice is interrupted and the caller feels uncomfortable or uncomfortable. It had the problem of making people feel.

【0005】本発明の目的は、携帯電話システムにおい
てチャネル切替やハンドオーバー時に発生するミュート
時間を少なくすることにある。
An object of the present invention is to reduce a mute time that occurs at the time of channel switching or handover in a portable telephone system.

【0006】[0006]

【課題を解決するための手段】前記課題を解決するため
本発明においては、基地局と無線送受信を行う携帯電話
機において、音声データから無音信号を検出する無音検
出部と音声データを蓄積するメモリーを具備し、通信開
始時または無音検出時から音声データを前記メモリに記
憶し、ハンドオーバやチャンネル切換え時など音声デー
タのないときも前記メモリーの音声データをもとに音声
再生することにより目的を達成している。
According to the present invention, there is provided a portable telephone which performs wireless transmission and reception with a base station, comprising a silence detecting section for detecting a silence signal from speech data and a memory for storing speech data. The object is achieved by storing voice data in the memory from the start of communication or detecting silence in the memory, and reproducing the voice based on the voice data in the memory even when there is no voice data such as handover or channel switching. ing.

【0007】[0007]

【発明の実施の形態】図1は基地局側の送信音声データ
と端末側での音声再生との関係を示す図。図2は受信デ
ータの流れの一例を示すブロック図である。
FIG. 1 is a diagram showing a relationship between transmitted voice data on a base station side and voice reproduction on a terminal side. FIG. 2 is a block diagram showing an example of the flow of received data.

【0008】本発明においては、通常通話時に基地局お
よび端末ではメモリーに音声データを蓄えながら、蓄え
た音声データを再生する。チャンネル切替やハンドオー
バ時に発生する無音期間にはメモリーに蓄えた音声デー
タを引き続き再生して無音時間を少なくし、無音による
違和感を軽減する。 以下図面等を参照して本発明をさ
らに詳しく説明する。
In the present invention, the base station and the terminal reproduce the stored voice data while storing the voice data in the memory during a normal call. During the silence period that occurs at the time of channel switching or handover, the audio data stored in the memory is continuously reproduced to reduce the silence time and reduce discomfort due to silence. Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.

【0009】(1)通話開始時 通話開始時にはすぐに音声再生を開始せずにFIFOメ
モリー7に音声データを蓄積する。会話に影響のない一
定時間の蓄積が終了してからFIFOメモリ7に蓄積さ
れた音声データを音声処理部8に送り音声を再生する。
(1) At the start of a call At the start of a call, sound data is stored in the FIFO memory 7 without immediately starting sound reproduction. After the accumulation for a certain period of time without affecting the conversation is completed, the audio data stored in the FIFO memory 7 is sent to the audio processing unit 8 to reproduce the audio.

【0010】(2)ハンドオーバまたはチャネル切替開
始時 ハンドオーバまたはチャネル切替開始時には基地局から
の音声データは無くなるが、この時にはFIFOメモリ
7に蓄積された音声データを音声処理部8に送り音声を
再生する。FIFOメモリ7に蓄積された音声データが
無くなったところで音声出力をミュートする。
(2) At the start of handover or channel switching At the start of handover or channel switching, there is no voice data from the base station. At this time, the voice data stored in the FIFO memory 7 is sent to the voice processing unit 8 to reproduce voice. . When the audio data stored in the FIFO memory 7 is exhausted, the audio output is muted.

【0011】(3)ハンドオーバまたはチャネル切替終
了時 ハンドオーバまたはチャネル切替終了時には基地局から
の通話が再開し、無音を検出したならFIFOメモリ7
に再び音声データの蓄積を開始する。有音の場合はこの
例のようにただちに音声データを再生出力する。
(3) At the end of handover or channel switching At the end of handover or channel switching, communication from the base station is resumed.
Then, the storage of the audio data is started again. In the case of a sound, the audio data is immediately reproduced and output as in this example.

【0012】(4)FIFOメモリ7に音声が十分蓄積
されていない場合 無音を検出した時から音声再生を禁止して必要な時間分
音声データをFIFOメモリ7に蓄積し、必要な時間分
を蓄積後、音声処理部8に音声データを送り音声の再生
を再開する。
(4) In the case where the sound is not sufficiently stored in the FIFO memory 7, the sound reproduction is prohibited from detecting the silence and the sound data is stored in the FIFO memory 7 for a necessary time and the necessary time is stored. Thereafter, the audio data is sent to the audio processing unit 8 and the reproduction of the audio is resumed.

【0013】このように本発明においては、通話開始時
に最初に音声データをFIFOメモリ7に蓄積し、蓄積
した音声データが通話に支障のない一定時間量に達する
と音声処理部8に音声データを送り、スピーカーから再
生を行う。ハンドオーバやチャネル切替で音声データの
受信が出来なくなった場合、端末はFIFOメモリ7に
蓄積された音声データで再生を継続する。これにより、
FIFOメモリ7に蓄積されている時間だけハンドオー
バやチャネル切替によるミュート時間が短くなり、音声
中断による違和感を軽減することができる。また、ハン
ドオーバやチャネル切替が終了したときは受信音声の無
音を検出するまでFIFOメモリ7には音声を蓄積せず
にスピーカーに出力する。無音検出部7が無音を検出す
ると、受信音声データが無音の時から音声データをFI
FOメモリ7に蓄積し、会話に必要とする音声を消さず
にFIFOメモリ7へのデータの蓄積を行う。FIFO
メモリ7に再び上記一定時間の音声データが蓄積される
と音声処理部8に音声データを送り音声の再生を再開す
る。
As described above, in the present invention, voice data is first stored in the FIFO memory 7 at the start of a call, and when the stored voice data reaches a certain amount of time that does not hinder the call, the voice data is sent to the voice processing unit 8. Send and play from the speaker. If audio data cannot be received due to handover or channel switching, the terminal continues to reproduce the audio data stored in the FIFO memory 7. This allows
The mute time due to handover or channel switching is shortened by the time stored in the FIFO memory 7, and the sense of incongruity due to audio interruption can be reduced. Further, when the handover or the channel switching is completed, the sound is output to the speaker without storing the sound in the FIFO memory 7 until the silence of the received sound is detected. When the silence detection unit 7 detects silence, the audio data is FI
The data is stored in the FO memory 7, and the data required for the conversation is stored in the FIFO memory 7 without erasing. FIFO
When the audio data for the predetermined time is again stored in the memory 7, the audio data is sent to the audio processing unit 8, and the reproduction of the audio is resumed.

【0014】[0014]

【発明の効果】以上説明したように本発明によればハン
ドオーバー等により通話が中断したときでも音声のとぎ
れが最小限となり、通話者への違和感を低減して通話を
継続することができる。またこの例では基地局から端末
への受信の例で示したが端末から基地局への送信でも同
様であり、簡単な構成で通話品質の向上を実現するもの
である。
As described above, according to the present invention, even when the call is interrupted due to a handover or the like, the interruption of the voice is minimized, and the call can be continued with a sense of discomfort to the caller reduced. Also, in this example, the example of reception from the base station to the terminal has been described, but the same applies to transmission from the terminal to the base station, and a simple configuration can improve the call quality.

【図面の簡単な説明】[Brief description of the drawings]

【図1】基地局側の送信音声データと端末側での音声再
生との関係を示す図。
FIG. 1 is a diagram showing a relationship between transmission audio data on a base station side and audio reproduction on a terminal side.

【図2】受信データの流れの一例を示すブロック図。FIG. 2 is a block diagram showing an example of a flow of received data.

【符号の説明】[Explanation of symbols]

1RF部 2デモジュレータ 3受信バッファ 4圧縮音声伸張 5無音検出 6プロセッサ 7FIFOメモリ 8音声処理 9スピーカ 1 RF section 2 demodulator 3 reception buffer 4 compressed voice expansion 5 silence detection 6 processor 7 FIFO memory 8 voice processing 9 speaker

Claims (1)

Translated fromJapanese
【特許請求の範囲】[Claims]【請求項1】基地局と無線送受信を行う携帯電話機にお
いて、音声データから無音信号を検出する無音検出部と
音声データを蓄積するメモリーを具備し、通信開始時ま
たは無音検出時から音声データを前記メモリに記憶し、
ハンドオーバやチャンネル切換え時など音声データのな
いときも前記メモリーの音声データをもとに音声再生す
ることを特徴とした携帯電話システム。
1. A portable telephone that performs wireless transmission and reception with a base station, comprising: a silence detection unit that detects a silence signal from audio data; and a memory that stores audio data. Memorize in memory,
A portable telephone system which reproduces sound based on the sound data in the memory even when there is no sound data, such as at the time of handover or channel switching.
JP11214997A1999-07-291999-07-29 Mobile phone systemPendingJP2001045560A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP11214997AJP2001045560A (en)1999-07-291999-07-29 Mobile phone system

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP11214997AJP2001045560A (en)1999-07-291999-07-29 Mobile phone system

Publications (1)

Publication NumberPublication Date
JP2001045560Atrue JP2001045560A (en)2001-02-16

Family

ID=16665001

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP11214997APendingJP2001045560A (en)1999-07-291999-07-29 Mobile phone system

Country Status (1)

CountryLink
JP (1)JP2001045560A (en)

Cited By (7)

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JP2007114471A (en)*2005-10-202007-05-10Nec CorpTelephone call voice recorder and program
JP2007202006A (en)*2006-01-302007-08-09Kyocera Corp Mobile communication system, base station apparatus, and control method for base station apparatus
WO2009107588A1 (en)*2008-02-272009-09-03京セラ株式会社Wireless communication apparatus
JP2010532636A (en)*2007-06-282010-10-07レベルヴォックス,エルエルシー Multimedia communication device
US9634969B2 (en)2007-06-282017-04-25Voxer Ip LlcReal-time messaging method and apparatus
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Cited By (41)

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