JPH0342973A - Electronic still camera - Google Patents
Electronic still cameraInfo
- Publication number
- JPH0342973A JPH0342973A JP1175718A JP17571889A JPH0342973A JP H0342973 A JPH0342973 A JP H0342973A JP 1175718 A JP1175718 A JP 1175718A JP 17571889 A JP17571889 A JP 17571889A JP H0342973 A JPH0342973 A JP H0342973A
- Authority
- JP
- Japan
- Prior art keywords
- compression
- data
- circuit
- path
- data compression
- 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.)
- Granted
Links
- 238000013144 data compression Methods 0.000 claims abstract description 23
- 238000007906 compression Methods 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 2
- 101100115215 Caenorhabditis elegans cul-2 gene Proteins 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Television Signal Processing For Recording (AREA)
Abstract
Description
【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なとのイメージセンサ
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６３−７２
２８３号公報等参照）。<Prior art> There is an electronic still camera that converts an image signal from an image sensor such as a CCD into A/D, compresses the data, and records it in a memory.
(See Publication No. 283, 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。The reason why data is compressed is to save memory capacity since the amount of information is large in the case of digital recording.
〈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（
速写）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。<Problem to be solved by the invention> However, data compression takes time to process, and although there is no problem with single-frame shooting (single-frame shooting), continuous shooting (
If this data compression is used for (quick shooting), it takes time to capture and record the image, which limits the continuous shooting speed (number of frames per second), making it impossible to shoot continuously at high speeds. .
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。SUMMARY OF THE INVENTION In view of these conventional problems, an object of the present invention is to provide a digital recording type electronic still camera that enables high-speed continuous shooting.
く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あるいは該回路による圧
縮率を変えて圧縮して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 A/D converts an image signal taken in from an image sensor using an A/D converter, compresses the data using a data compression circuit, and records it in a memory. In an electronic still camera that has a means for selecting between single-frame shooting and continuous shooting, when continuous shooting is selected, the data is compressed without being compressed by the data compression circuit or by changing the compression ratio by the circuit. This configuration is provided with a switching means for recording in the memory.
く作用〉
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
、あるいは、データ圧縮回路の圧縮率を変えて処理を簡
単化することにより、処理時間を短縮できる。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。Effect> 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 compression by the data compression circuit, or the processing time required for data compression can be eliminated. By changing the rate and simplifying the processing, processing time can be shortened. Therefore,
The time from one imaging to recording can be shortened, and high-speed continuous imaging becomes possible.
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。Note that the continuous shooting mentioned 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 embodiment 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ＣＯＤドライバ４から与えられる転送パル
スにより、Ｃ０Ｄ２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 the subject is given to the CCD 2 as an image sensor (imaging device) via the lens 1, and a photoelectrically converted analog image signal is transferred from the COD 2 by a transfer pulse given from the COD driver 4 based on a command from the CPU 3. be 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にてデジモル画像デを夕に変換される。The analog image signal from the CCD 2 is sent to an amplifier 5.
After being amplified by the preprocessing circuit 6 and preprocessed by the preprocessing circuit 6, the A/D converter 7 converts the digital mole image into digital data.
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 in the signal processing circuit 8, the data is compressed to 1/N by a well-known compression method such as discrete cosine conversion in the data compression circuit 9, and the a contact of the changeover switch 10 as a switching means is The data is stored in the memory buffer 11 via.
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５−ＲＡＭ、Ｅ” ＦＲＯＭ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 this memory buffer 11 to a memory card 12 that is detachably attached to the camera body. This memory card 12 is formed into a card shape by incorporating memory chips such as 5-RAM and E"FROM on a printed circuit board.
ここで、ＣＰＵ３には、ｌ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ＣＯＤ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 is input to the CPU 3 from a selection switch 13 that serves as a selection means for single-frame shooting or continuous shooting. A transfer pulse is sent from the COD driver 4 at a cycle of , and continuous shooting is performed, but data compression is not performed at this time.
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 this. When the continuous shooting mode is selected by the selection switch 13, the CPU 3 The switch 10 is switched to the b contact side, and the digital image data from the signal processing circuit 8 passes through the path 14 without being compressed, reaches the memory buffer 11, and is written to 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, and the time from imaging to recording can be shortened by that amount, and the continuous shooting speed (number of frames/second) can be improved.
また、このように完全にデータ圧縮を省略する代わりに
、圧縮率Ｎを変更させるようにしても、圧縮に要する処
理時間を短縮することができ、同様な効果が得られる。Further, instead of completely omitting data compression in this way, even if the compression ratio N is changed, the processing time required for compression can be shortened and the same effect can be obtained.
圧縮率Ｎを変更させる際は、圧縮方法自体を簡便な方法
に変えてもよい。When changing the compression ratio N, the compression method itself may be changed to a simpler method.
本発明は以上のように連続撮影時にデータ圧縮を行わず
あるいは圧縮率を変更するものであるが、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。As described above, the present invention does not perform data compression or changes the compression rate during continuous shooting, but since data compression is not performed, the amount of memory used increases. Calculate the speed (continuous shooting speed),
It is preferable to display this on the display section 15, 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 continuous shooting speed of an electronic still camera vary depending on the remaining memory capacity of the memory card used, recording speed, and data compression rate, so calculate it from these.
By displaying the predicted number of remaining frames and continuous shooting speed on the camera, 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か又は簡単になるため、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, the data compression process is omitted or simplified during continuous shooting, so that the continuous shooting speed can be improved.
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 an embodiment of the present invention. 2...CCD 3...CPU 7...A
/D converter 9...data compression circuit 10...
Selector switch 11...Memory buffer 12...
Memory card 13...Selection switch
Claims (1)
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
行わずにあるいは該回路による圧縮率を変えて圧縮して
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 electronic still camera that A/D converts an image signal captured from an image sensor using an A/D converter, compresses the data using a data compression circuit, and records the result in a memory,
In an apparatus having a means for selecting between single-frame shooting and continuous shooting, a switching means is provided which, when selecting continuous shooting, performs compression without performing compression by the data compression circuit or by changing the compression rate by the circuit and records the compressed data in the memory. An electronic still camera characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1175718A JP2946335B2 (en) | 1989-07-10 | 1989-07-10 | Electronic still camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1175718A JP2946335B2 (en) | 1989-07-10 | 1989-07-10 | Electronic still camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0342973A true JPH0342973A (en) | 1991-02-25 |
| JP2946335B2 JP2946335B2 (en) | 1999-09-06 |
Family
ID=16001026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1175718A Expired - Lifetime JP2946335B2 (en) | 1989-07-10 | 1989-07-10 | Electronic still camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2946335B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2285720A (en) * | 1994-01-07 | 1995-07-19 | Quantel Ltd | A video processing apparatus and method |
| JPH07326172A (en) * | 1994-06-02 | 1995-12-12 | Canon Inc | Image recording/reproducing apparatus |
| US5727112A (en) * | 1994-01-07 | 1998-03-10 | Quantel Limited | Video processing apparatus and method |
| CN103533358A (en) * | 2013-10-14 | 2014-01-22 | 上海纬而视科技股份有限公司 | Self adaption image collection transmission and display device |
| US9628710B2 (en) | 1998-07-17 | 2017-04-18 | Sony Corporation | Imaging apparatus |
-
1989
- 1989-07-10 JP JP1175718A patent/JP2946335B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2285720A (en) * | 1994-01-07 | 1995-07-19 | Quantel Ltd | A video processing apparatus and method |
| US5727112A (en) * | 1994-01-07 | 1998-03-10 | Quantel Limited | Video processing apparatus and method |
| GB2285720B (en) * | 1994-01-07 | 1998-03-18 | Quantel Ltd | A video processing apparatus and method |
| JPH07326172A (en) * | 1994-06-02 | 1995-12-12 | Canon Inc | Image recording/reproducing apparatus |
| US9628710B2 (en) | 1998-07-17 | 2017-04-18 | Sony Corporation | Imaging apparatus |
| CN103533358A (en) * | 2013-10-14 | 2014-01-22 | 上海纬而视科技股份有限公司 | Self adaption image collection transmission and display device |
| CN103533358B (en) * | 2013-10-14 | 2016-07-06 | 上海纬而视科技股份有限公司 | Self adaption image collection transmission display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2946335B2 (en) | 1999-09-06 |
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