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JP2946335B2 - Electronic still camera - Google Patents

Electronic still camera

Info

Publication number
JP2946335B2
JP2946335B2JP1175718AJP17571889AJP2946335B2JP 2946335 B2JP2946335 B2JP 2946335B2JP 1175718 AJP1175718 AJP 1175718AJP 17571889 AJP17571889 AJP 17571889AJP 2946335 B2JP2946335 B2JP 2946335B2
Authority
JP
Japan
Prior art keywords
continuous shooting
data compression
still camera
electronic still
data
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.)
Expired - Lifetime
Application number
JP1175718A
Other languages
Japanese (ja)
Other versions
JPH0342973A (en
Inventor
勇起 酒井
佳孝 太田
淳 高山
隆志 皆木
勝也 永石
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta IncfiledCriticalKonica Minolta Inc
Priority to JP1175718ApriorityCriticalpatent/JP2946335B2/en
Publication of JPH0342973ApublicationCriticalpatent/JPH0342973A/en
Application grantedgrantedCritical
Publication of JP2946335B2publicationCriticalpatent/JP2946335B2/en
Anticipated expirationlegal-statusCritical
Expired - Lifetimelegal-statusCriticalCurrent

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Description

Translated fromJapanese

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、デジタル記録式の電子スチルカメラに関す
る。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a digital recording type electronic still camera.

〈従来の技術〉 電子スチルカメラとして、CCDなどのイメージセンサ
から取込んだ画像信号をA/D変換し、データ圧縮を行っ
て、メモリに記録するものがある(特開昭63−72283号
公報等参照)。
<Prior Art> As an electronic still camera, there is an electronic still camera which converts an image signal taken from an image sensor such as a CCD into a digital signal, compresses the data, and records the data in a memory (Japanese Patent Laid-Open No. 63-72283). Etc.).

データ圧縮を行うのは、デジタル記録の場合、情報量
が大となることから、メモリ容量の節約のためである。
Data compression is performed in order to save memory capacity because digital recording requires a large amount of information.

〈発明が解決しようとする課題〉 しかしながら、データ圧縮は処理に時間がかかり、1
コマ撮影(単写)の場合は問題がないものの、連続撮影
(連写)の場合にこのデータ圧縮を行っていると、撮像
から記録までに時間がかかる結果、連続撮影速度(コマ
数/秒)が制限され、高速度で連続撮影ができないとい
う問題点があった。
<Problems to be Solved by the Invention> However, data compression takes a long time to process.
Although there is no problem in the case of frame shooting (single shot), if this data compression is performed in the case of continuous shooting (continuous shooting), it takes time from imaging to recording, and the continuous shooting speed (frames / second) ) Is limited, and there is a problem that continuous shooting cannot be performed at a high speed.

本発明は、このような従来の問題点に鑑み、高速度な
連続撮影を可能とするデジタル記録式の電子スチルカメ
ラを提供することを目的とする。
An object of the present invention is to provide a digital recording-type electronic still camera that enables high-speed continuous shooting in view of such a conventional problem.

〈課題を解決するための手段〉 このため、本発明は、イメージセンサから取込んだ画
像信号をA/D変換器によりA/D変換し、データ圧縮回路に
よりデータ圧縮を行って、メモリに記録する電子スチル
カメラであって、1コマ撮影と連続撮影との選択手段を
有するものにおいて、連続撮影の選択時に、データ圧縮
回路による圧縮を行わずにメモリに記録する切換手段を
設ける構成としたものである。
<Means for Solving the Problems> For this reason, the present invention provides an A / D converter for A / D conversion of an image signal taken from an image sensor, performs data compression by a data compression circuit, and records the data in a memory. Electronic still camera having a selection means for one-frame shooting and continuous shooting, wherein a switching means for recording in a memory without performing compression by a data compression circuit when continuous shooting is selected is provided. It is.

〈作用〉 上記の構成においては、連続撮影の選択時には、デー
タ圧縮回路による圧縮を行わずにメモリに記録すること
により、データ圧縮に要する処理時間を無くすことがで
きる。従って、1回の撮像から記録までの時間を短縮で
き、高速度な連続撮影が可能となる。
<Operation> In the above configuration, when continuous shooting is selected, the processing time required for data compression can be eliminated by recording in the memory without performing compression by the data compression circuit. Therefore, the time from one imaging to recording can be shortened, and high-speed continuous imaging can be performed.

尚、ここでいう連続撮影にはオートブラケッティング
撮影等も含む。
It should be noted that the continuous shooting here includes auto bracketing shooting and the like.

〈実施例〉 以下に本発明の一実施例を第1図に基づいて説明す
る。
<Example> An example of the present invention will be described below with reference to FIG.

レンズ1を介して被写体の光学像がイメージセンサ
(撮像素子)としてのCCD2に与えられ、CPU3からの指令
に基づきCCDドライバ4から与えられる転送パルスによ
り、CCD2から光電変換されたアナログ画像信号が転送さ
れる。
An optical image of a subject is given to the CCD 2 as an image sensor (imaging element) via the lens 1, and an analog image signal photoelectrically converted from the CCD 2 is transferred by a transfer pulse given from the CCD driver 4 based on a command from the CPU 3. Is done.

そして、CCD2からのアナログ画像信号は、増幅器5で
増幅され、前処理回路6で前処理された後、A/D変換器
7にてデジタル画像データに変換される。
The analog image signal from the CCD 2 is amplified by the amplifier 5, pre-processed by the pre-processing circuit 6, and converted into digital image data by the A / D converter 7.

そして、A/D変換器7からのデジタル画像データは、
信号処理回路8で色分離等の信号処理がなされた後、デ
ータ圧縮回路9で周知のディスクリート・コサイン変換
等の圧縮手法により1/Nにデータ圧縮され、切換手段と
しての切換スイッチ10のa接点を介して、メモリバッフ
ァ11に蓄えられる。
The digital image data from the A / D converter 7 is
After signal processing such as color separation is performed by the signal processing circuit 8, the data is compressed to 1 / N by a well-known compression method such as discrete cosine transform in the data compression circuit 9, and the a contact of the changeover switch 10 as a switching means Is stored in the memory buffer 11.

そして、このメモリバッファ11からカメラ本体に着脱
自在に装着されるメモリカード12に書込まれる。このメ
モリカード12はS−RAM,E2PROM等のメモリチップをプリ
ント基板上に組込んでカード状にしたものである。
Then, the data is written from the memory buffer 11 to the memory card 12 which is detachably attached to the camera body. The memory card 12 is obtained by the card-like incorporating S-RAM, a memory chip such as E2 PROM on the printed circuit board.

ここで、CPU3には、1コマ撮影・連続撮影の選択手段
としての選択スイッチ13からの信号が入力されるように
なっており、連続撮影モードでは、シャッターボタン
(図示せず)の操作により所定の周期でCCDドライバ4
から転送パルスが送られて、連続撮影がなされるが、こ
のときは、データ圧縮を行わない。
Here, a signal from a selection switch 13 as a means for selecting one frame or continuous shooting is input to the CPU 3, and in the continuous shooting mode, a predetermined button is operated by operating a shutter button (not shown). Driver 4 with the cycle of
, A transfer pulse is sent to perform continuous shooting, but in this case, no data compression is performed.

すなわち、信号処理回路8の出力経路には、データ圧
縮回路9へ入る経路と、これをバイパスする経路14とが
あり、選択スイッチ13により連続撮影モードが選択され
ている場合は、CPU3により、切換スイッチ10がb接点側
に切換えられ、信号処理回路8からのデジタル画像デー
タが圧縮されることなくそのまま経路14を通ってメモリ
バッファ11に至り、メモリカード12に書込まれる。
That is, the output path of the signal processing circuit 8 includes a path that enters the data compression circuit 9 and a path 14 that bypasses the path. When the continuous shooting mode is selected by the selection switch 13, The switch 10 is switched to the contact b side, and the digital image data from the signal processing circuit 8 passes through the path 14 to the memory buffer 11 without being compressed, and is written into the memory card 12.

従って、連続撮影時は、データ圧縮に要する処理時間
を無くすことができ、その分、撮像から記録までの時間
を短縮でき、連続撮影速度(コマ数/秒)を向上させる
ことができる。
Therefore, during continuous shooting, the processing time required for data compression can be eliminated, the time from imaging to recording can be shortened, and the continuous shooting speed (frames / second) can be improved.

本発明は以上のように連続撮影時にデータ圧縮を行わ
ないものであるが、データ圧縮をしない分、使用メモリ
容量は増えることになるから、予め、残コマ数及び連続
撮影速度(連写速度)を演算し、表示部15,16に表示し
て、使用者に知らせるようにするのがよい。
Although the present invention does not perform data compression during continuous shooting as described above, the amount of memory used increases because the data compression is not performed. Therefore, the number of remaining frames and the continuous shooting speed (continuous shooting speed) are determined in advance. Is preferably calculated and displayed on the display units 15 and 16 to notify the user.

電子スチルカメラの残コマ数,連続撮影速度は、使用
するメモリカードの残メモリ容量,記録速度及びデータ
圧縮率によって変わってくるから、これらから計算し
て、予測残コマ数と連続撮影速度とをカメラ上に表示す
ることにより、的確な判断が可能となる。
The number of remaining frames and the continuous shooting speed of the electronic still camera vary depending on the remaining memory capacity of the memory card used, the recording speed, and the data compression ratio. By displaying the information on the camera, an accurate judgment can be made.

〈発明の効果〉 以上説明したように本発明によれば、連続撮影時にデ
ータ圧縮プロセスが省略されるため、連続撮影速度が向
上するという効果が得られる。
<Effects of the Invention> As described above, according to the present invention, since the data compression process is omitted during continuous shooting, the effect of improving the continuous shooting speed can be obtained.

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

第1図は本発明の一実施例を示す電子スチルカメラのシ
ステム図である。 2……CCD、3……CPU、7……A/D変換器、9……デー
タ圧縮回路、10……切換スイッチ、11……メモリバッフ
ァ、12……メモリカード、13……選択スイッチ
FIG. 1 is a system diagram of an electronic still camera showing one embodiment of the present invention. 2 ... CCD, 3 ... CPU, 7 ... A / D converter, 9 ... Data compression circuit, 10 ... Switch, 11 ... Memory buffer, 12 ... Memory card, 13 ... Selection switch

フロントページの続き (72)発明者 皆木 隆志 東京都八王子市石川町2970番地 コニカ 株式会社内 (72)発明者 永石 勝也 東京都八王子市石川町2970番地 コニカ 株式会社内 (56)参考文献 特開 平3−1681(JP,A) 特開 平2−113683(JP,A) 特開 平2−113684(JP,A) 特開 平2−105786(JP,A) (58)調査した分野(Int.Cl.6,DB名) H04N 5/225 H04N 5/92 H04N 5/907Continued on the front page (72) Inventor Takashi Minaki 2970 Ishikawacho, Hachioji-shi, Tokyo Konica Corporation (72) Inventor Katsuya Nagaishi 2970 Ishikawacho, Hachioji-shi, Tokyo Konica Corporation (56) References JP JP-A-3-1681 (JP, A) JP-A-2-113683 (JP, A) JP-A-2-113684 (JP, A) JP-A-2-105786 (JP, A) (58) Fields investigated (Int) .Cl.6 , DB name) H04N 5/225 H04N 5/92 H04N 5/907

Claims (1)

Translated fromJapanese
(57)【特許請求の範囲】(57) [Claims]【請求項1】イメージセンサから取込んだ画像信号をA/
D変換器によりA/D変換し、データ圧縮回路によりデータ
圧縮を行って、メモリに記録する電子スチルカメラであ
って、1コマ撮影と連続撮影との選択手段を有するもの
において、連続撮影の選択時に、データ圧縮回路による
圧縮を行わずにメモリに記録する切換手段を設けたこと
を特徴とする電子スチルカメラ。
An image signal taken from an image sensor is converted to an A / A signal.
An electronic still camera that performs A / D conversion by a D converter, performs data compression by a data compression circuit, and records the data in a memory, and has a selection unit for one-frame shooting and continuous shooting. An electronic still camera comprising a switching means for recording data in a memory without performing compression by a data compression circuit.
JP1175718A1989-07-101989-07-10 Electronic still cameraExpired - LifetimeJP2946335B2 (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP1175718AJP2946335B2 (en)1989-07-101989-07-10 Electronic still camera

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP1175718AJP2946335B2 (en)1989-07-101989-07-10 Electronic still camera

Publications (2)

Publication NumberPublication Date
JPH0342973A JPH0342973A (en)1991-02-25
JP2946335B2true JP2946335B2 (en)1999-09-06

Family

ID=16001026

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP1175718AExpired - LifetimeJP2946335B2 (en)1989-07-101989-07-10 Electronic still camera

Country Status (1)

CountryLink
JP (1)JP2946335B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
GB9400245D0 (en)*1994-01-071994-03-02Quantel LtdA video processing apparatus and method
EP0662688B1 (en)*1994-01-072001-05-09Quantel LimitedA video processing apparatus and method
JP3599369B2 (en)*1994-06-022004-12-08キヤノン株式会社 Recording device
JP4131052B2 (en)1998-07-172008-08-13ソニー株式会社 Imaging device
CN103533358B (en)*2013-10-142016-07-06上海纬而视科技股份有限公司Self adaption image collection transmission display device

Also Published As

Publication numberPublication date
JPH0342973A (en)1991-02-25

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