JPH0257074A - Solid-state image pickup device - Google Patents
Solid-state image pickup deviceInfo
- Publication number
- JPH0257074A JPH0257074A JP63209909A JP20990988A JPH0257074A JP H0257074 A JPH0257074 A JP H0257074A JP 63209909 A JP63209909 A JP 63209909A JP 20990988 A JP20990988 A JP 20990988A JP H0257074 A JPH0257074 A JP H0257074A
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- solid
- video signal
- state image
- video
- speed
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- 238000000034 method Methods 0.000 claims abstract description 12
- 238000003384 imaging method Methods 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 7
- 230000015654 memory Effects 0.000 description 2
- 238000003705 background correction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Television Signal Processing For Recording (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はテレビジョンカメラ等に用いられる電子シャッ
タシステムを用いた固体撮像装置に関し特にその電子シ
ャッタシステム使用時の撮像・再生方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a solid-state imaging device using an electronic shutter system used in a television camera or the like, and particularly to an imaging/reproducing method when using the electronic shutter system.
電子シャッタ動作可能な固体撮像素子の一例であるイン
ターライン型COD固体撮像素子のブロック図を第3図
に、固体撮像装置の一例のブロック図を第4図に示す。FIG. 3 shows a block diagram of an interline COD solid-state image sensor, which is an example of a solid-state image sensor capable of electronic shutter operation, and FIG. 4 shows a block diagram of an example of a solid-state image sensor.
第3図において、複数個のフォトセンサ1に入射した光
はその光量に応じて信号電荷がフォトセンサ1のポテン
シャル井戸に形成され、読み出しパルスにより垂直シフ
トレジスタ2にいっせいに読み出される。垂直シフトレ
ジスタ2の全電荷パターンは行単位で一水平走査線毎に
水平シフトレジスタ3に並列転送され、出力回路部4よ
り順次ビデオ信号として出力される。In FIG. 3, light incident on a plurality of photosensors 1 forms signal charges in the potential wells of the photosensors 1 according to the amount of light, and is read out all at once to the vertical shift register 2 by a readout pulse. The entire charge pattern of the vertical shift register 2 is transferred row by row to the horizontal shift register 3 in parallel for each horizontal scanning line, and is sequentially output from the output circuit section 4 as a video signal.
第4図において、固体撮像素子11がら出力されたビデ
オ信号は低減ろ波器42、前置増幅器52を介してプロ
セス回路62においてシェーディング補正、アパーチュ
ア補正、フランキンクパルス混合、γ補正等の信号処理
が行われ、映像信号として出力される。In FIG. 4, the video signal output from the solid-state image sensor 11 is passed through a reduction filter 42 and a preamplifier 52 to a process circuit 62 for signal processing such as shading correction, aperture correction, flanking pulse mixing, and γ correction. is performed and output as a video signal.
また、電子シャッタシステム使用時には、フォトセンサ
1に蓄積されていた不要な映像信号の信号電荷は、垂直
ブランキング期間内に不要電荷読み出しパルスにより、
垂直シフトレジスタ2に読み出され、通常のクロックパ
ルスの50〜100倍の速い周波数の高速掃き出しパル
スによる高速動作て垂直シフトレジスタ2に対して水平
シフトレジスタ3と反対側に設けられた掃き出しトレイ
ン5に除去された後映像信号の信号電荷は一定の採光時
間経過後、読み出しパルスによりフォトセンサ1から垂
直シフトレジスタ2に読み出され、以下前述と同様の動
作により、順次映像信号として出力される。Furthermore, when using the electronic shutter system, signal charges of unnecessary video signals accumulated in the photosensor 1 are removed by unnecessary charge readout pulses during the vertical blanking period.
A sweep train 5 is read out to the vertical shift register 2 and is operated at high speed by a high-speed sweep pulse having a frequency 50 to 100 times faster than a normal clock pulse. After a certain daylighting time has elapsed, the signal charge of the video signal that has been removed is read out from the photosensor 1 to the vertical shift register 2 by a readout pulse, and then sequentially output as a video signal by the same operation as described above.
上述した従来の固体撮像装置はテレビジョンの標準方式
に合ぜ1フイ一ルド期間内のある一定時間(たとえば]
、 / 1000 s e c、1/2000secな
ど)にフォトセンサの採光時間を割当て映像信号を採取
し、他の期間内に採取された映像信号電荷を不要とし、
破棄しているのて、特に動きの速い被写体に対しては、
フレの少ない鮮明な画像が得られるか、スロー再生を行
った場合には、1枚の静止画像のコマ送り的な流動感の
ない再生画像になるという欠点があった。The above-mentioned conventional solid-state imaging device is compatible with the standard television system and captures images for a certain period of time (for example) within one field period.
, / 1000 sec, 1/2000 sec, etc.) to collect the video signal by allocating the lighting time of the photosensor, making the video signal charges collected during other periods unnecessary,
Especially for fast-moving subjects,
If a clear image with less blurring is obtained, or if slow playback is performed, the playback image has the disadvantage that the playback image lacks the fluidity of a single still image.
本発明の目的は、動きの速い被写体を電子シャッタ動作
て撮像しスロー再生を行う場合に流動感のあるブレの少
ない鮮明な再生画像か得られる固体撮像装置を提供する
ことにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a solid-state imaging device that can provide a clear reproduced image with a sense of fluidity and less blur when an image of a fast-moving object is captured using an electronic shutter operation and reproduced in slow motion.
本発明の固体撮像装置は、電子シャッタ動作可能な固体
撮像素子と、標準方式の整数倍の速さて前記固体撮像素
子を駆動して電子シャッタ動作させる駆動パルスを発生
ずる駆動回路と、前記固体撮像素子の出力信号を低域ろ
波器、前置増幅器を介して受け取るプロセス回路と、前
記プロセス回路の出力から標準方式に見合う映像信号の
み選択するセレクトロジックと、前記プロセス回路の出
力信号を受け取って記録しスロー再生を行なう記録再生
部とを含むというものである。The solid-state imaging device of the present invention includes a solid-state imaging device capable of operating an electronic shutter, a drive circuit that drives the solid-state imaging device at an integral multiple of a standard method and generates a drive pulse to operate the electronic shutter, and the solid-state imaging device. a process circuit that receives the output signal of the element via a low-pass filter and a preamplifier; a select logic that selects only a video signal that meets a standard format from the output of the process circuit; and a select logic that receives the output signal of the process circuit. It includes a recording and reproducing section that performs recording and slow reproduction.
次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第1図は本発明の一実施例を示すフロック図てあり、第
2図(a)、(b)は電子シャッタ動作で採取した映像
信号をスロー再生した時の従来例の場合と本実施例の場
合を比較するための概念図である。FIG. 1 is a block diagram showing one embodiment of the present invention, and FIGS. 2(a) and 2(b) show the conventional example and the present example when a video signal collected by electronic shutter operation is played back in slow motion. FIG. 2 is a conceptual diagram for comparing cases.
この実施例は、第1図に示したように、電子シャッタ動
作が可能な固体撮像素子11と、固体撮像素子11を標
準方式の2倍の速さで駆動して電子シャッタ動作させる
駆動パルスを発生ずる駆動回路21と、同期パルス発生
器31と、低減ろ波器41と、前置増幅器51と、シェ
ープインク補正、アパーチュア補正、ブランキングパル
ス混合、γ補正等の信号処理を行うプロセス回路6]と
、同期パルス発生器31の同期パルスにより制御され、
テレビジョンの標準方式に見合う映像信号のみを選択出
力させるためのセレクトロジック81と、電子シャッタ
システムを使用し、スロー再生を行った際コマ送り的て
ない流動感のある且つブレの少ない鮮明な再生画像を得
るために、テレヒジョの標準方式の一画面分の映像信号
の他に1画面分の映像信号を記録し再生することが出来
る映像信号記録再生部7]がら構成されている。As shown in FIG. 1, this embodiment uses a solid-state image sensor 11 capable of electronic shutter operation and a drive pulse that drives the solid-state image sensor 11 at twice the speed of the standard system to operate the electronic shutter. A generation drive circuit 21, a synchronous pulse generator 31, a reduction filter 41, a preamplifier 51, and a process circuit 6 that performs signal processing such as shape ink correction, aperture correction, blanking pulse mixing, and γ correction. ] and controlled by the synchronization pulse of the synchronization pulse generator 31,
By using the select logic 81 to select and output only video signals that meet the standard television system and an electronic shutter system, the playback is clear and fluid with less blurring and no frame-by-frame playback when slow playback is performed. In order to obtain an image, the video signal recording/reproducing section 7 is capable of recording and reproducing one screen's worth of video signals in addition to one screen's worth of video signals of the Telehijo standard system.
第1図において固体撮像素子の駆動回路2]によりテレ
ビジョンの標準のタイミング周波数の2倍の周波数で固
体撮像素子11を電子シャッタ動作で駆動させることに
より、第2図(ト))に示した様に、従来の2倍分の映
像信号が得られる。これらの映像信号は、低減ろ波器4
1、前置増幅器51、プロセス回路61を介して映像信
号として出力され、映像信号の記録再生部71において
記録される。ここでこれらの映像信号がスロー再生され
た時には第2図に示しフコ様に、従来と比べて2倍の映
像信号が記録・蓄積されているため、その再生映像は電
子シャッタ動作と相まって、動作の速い被写体に対して
流動感のあるブレの少ない鮮明でダイナミックな映像か
得られる。By driving the solid-state image sensor 11 with an electronic shutter operation at a frequency twice the standard timing frequency of the television by the solid-state image sensor drive circuit 2 in FIG. In this way, twice as much video signal as before can be obtained. These video signals are passed through a reduction filter 4
1. The signal is output as a video signal via the preamplifier 51 and the process circuit 61, and is recorded in the video signal recording/reproducing section 71. When these video signals are played back in slow motion, as shown in Figure 2, twice as many video signals as before are recorded and accumulated, so the played video is slowed down by the electronic shutter operation. For fast-moving subjects, you can obtain clear, dynamic images with a sense of fluidity and less blur.
また、通常の記録再生しない映像信号の出力の場合は、
第1図において、セレクトロジック81を同期パルス発
生器31のタイミングパルスによりテレビジョンの標準
方式に見合う映像信号のみ選択出力させるよう制御する
ことにより、第2図(b)の破線で示した一画面分の映
像信号7を除去し映像信号を出力することが出来る。セ
レクトロジックの出力は3個のフィールドメモリを含む
方式変換装置く図示しない)により、標準方式の映像信
号として受像装置に入力される。あらかじめ、1フイー
ルド毎に信号が除去されているので、フィールドメモリ
への書き込みは、確実に行え、良好な映像が得られる。In addition, when outputting a video signal that is not normally recorded or played back,
In FIG. 1, by controlling the select logic 81 to selectively output only the video signal compatible with the standard television format using the timing pulse of the synchronization pulse generator 31, one screen indicated by the broken line in FIG. It is possible to remove the video signal 7 and output the video signal. The output of the selection logic is input to the image receiving apparatus as a standard format video signal by a format conversion device (not shown) including three field memories. Since signals are removed from each field in advance, writing to the field memory can be performed reliably and good images can be obtained.
本実施例では、従来の2倍の速さで固体撮像素子を駆動
し、映像信号を従来の2倍分採取記録し、動作の速い被
写体に対して流動感のあるブレの少ない鮮明な再生画像
が得られる固体撮像装置について述べたが、固体撮像素
子が許容する範囲で数倍の速さで駆動し、数倍分の映像
信号を採取・記録することにより、スロー再生時さらに
流動感のあるダイナミックな再生画像が得られることは
言うまでもない。In this example, the solid-state image sensor is driven at twice the speed of the conventional image sensor, and twice as much video signal as the conventional one is collected and recorded. We have described a solid-state imaging device that can provide a sense of fluidity during slow playback by driving at several times the speed allowed by the solid-state imaging device and collecting and recording several times as many video signals. Needless to say, dynamic reproduced images can be obtained.
また、固体撮像素子として、インターライン型CCDを
用いたが、電子シャッタ動作が可能であるなら、他の種
類の固体撮像素子においても本発明が適用されることは
言うまでもない。Although an interline CCD was used as the solid-state image sensor, it goes without saying that the present invention can be applied to other types of solid-state image sensors as long as they are capable of electronic shutter operation.
以上説明した様に、本発明は固体撮像素子を本来の整数
倍のスピードで駆動し、本来の1フイ一ルド期間内に数
度フォl〜センサの採光時間を割り当て、映像信号を採
取することにより、動作の速い被写体を電子シャッタシ
ステムを使用して記録した映像信号のスロー再生を行っ
た場合にもコマ送り的でない流動感のある且つブレの少
ない鮮明な再生画像を提供することが出来るという効果
がある。As explained above, the present invention drives the solid-state image sensor at an integer multiple of the original speed, allocates several degrees of light exposure time to the sensor within the original one field period, and collects the video signal. This makes it possible to provide clear playback images with a sense of fluidity and less blurring, even when performing slow playback of a video signal recorded using an electronic shutter system for a fast-moving subject. effective.
第1図は本発明の−実施例を示すブロック図、第2図(
a)、(b)は電子シャッタ動作で採取した映像信号を
スロー再生した時の従来例の場合と本実施例の場合を比
較するための概念図、第3図は電子シャッタ動作可能な
インターライン型CCD固体撮像素子のブロック図、第
4図は従来の固体撮像装置のブロック図の一例である。
1・・・フォトセンサ、2・・・垂直レジスタ、3・・
・水平シフトレジスタ、4・・・出力回路部、5・・・
掃き出しドレイン、6・・・1画面分の映像信号、7・
・・本発明により新たに追加される1画面分の映像信号
、11・・・固体撮像素子、21.22・・・駆動回路
部、32.32・・・同期パルス発生器、41.42・
・・低減ろ波器、51.52・・・前置増幅器、61.
62・・・プロセス回路、71.72・・・映像信号の
記録再生部、81・・・セレクトロジック、91.92
・・・映像信号の記録再生制御回路。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG.
a) and (b) are conceptual diagrams for comparing the case of the conventional example and the case of this embodiment when video signals collected by electronic shutter operation are played back in slow motion. FIG. 4 is an example of a block diagram of a conventional solid-state imaging device. 1...Photo sensor, 2...Vertical register, 3...
・Horizontal shift register, 4... Output circuit section, 5...
Sweep drain, 6...1 screen worth of video signal, 7.
... Video signal for one screen newly added according to the present invention, 11... Solid-state image sensor, 21.22... Drive circuit section, 32.32... Synchronization pulse generator, 41.42.
... Reduction filter, 51.52 ... Preamplifier, 61.
62...Process circuit, 71.72...Video signal recording/reproducing unit, 81...Select logic, 91.92
...Video signal recording/playback control circuit.
Claims (1)
数倍の速さで前記固体撮像素子を駆動して電子シャッタ
動作させる駆動パルスを発生する駆動回路と、前記固体
撮像素子の出力信号を低域ろ波器、前置増幅器を介して
受け取るプロセス回路と、前記プロセス回路の出力から
標準方式に見合う映像信号のみ選択するセレクトロジッ
クと、前記プロセス回路の出力信号を受け取って記録し
スロー再生を行なう記録再生部とを含むことを特徴とす
る固体撮像装置。a solid-state image sensor capable of electronic shutter operation; a drive circuit that drives the solid-state image sensor at an integer multiple of a standard speed and generates a drive pulse to operate the electronic shutter; A process circuit that receives the signal through a filter and a preamplifier, a select logic that selects only a video signal compatible with a standard format from the output of the process circuit, and a record that receives and records the output signal of the process circuit and performs slow playback. A solid-state imaging device comprising: a reproduction section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63209909A JPH0257074A (en) | 1988-08-23 | 1988-08-23 | Solid-state image pickup device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63209909A JPH0257074A (en) | 1988-08-23 | 1988-08-23 | Solid-state image pickup device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0257074A true JPH0257074A (en) | 1990-02-26 |
Family
ID=16580660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63209909A Pending JPH0257074A (en) | 1988-08-23 | 1988-08-23 | Solid-state image pickup device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0257074A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0468873A (en) * | 1990-07-05 | 1992-03-04 | Kinki Univ | Video photographing device |
JPH0526822A (en) * | 1991-07-19 | 1993-02-02 | Ishizuka Glass Co Ltd | Glass bottle inspecting device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54161222A (en) * | 1978-06-12 | 1979-12-20 | Toshiba Corp | Recording-reproducing display unit for output of high speed frame-by-frame television camera |
JPS607648A (en) * | 1983-06-24 | 1985-01-16 | Sony Corp | Device for generating video signal |
JPS6359074A (en) * | 1986-08-27 | 1988-03-14 | Omron Tateisi Electronics Co | High speed video camera |
-
1988
- 1988-08-23 JP JP63209909A patent/JPH0257074A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54161222A (en) * | 1978-06-12 | 1979-12-20 | Toshiba Corp | Recording-reproducing display unit for output of high speed frame-by-frame television camera |
JPS607648A (en) * | 1983-06-24 | 1985-01-16 | Sony Corp | Device for generating video signal |
JPS6359074A (en) * | 1986-08-27 | 1988-03-14 | Omron Tateisi Electronics Co | High speed video camera |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0468873A (en) * | 1990-07-05 | 1992-03-04 | Kinki Univ | Video photographing device |
JPH0526822A (en) * | 1991-07-19 | 1993-02-02 | Ishizuka Glass Co Ltd | Glass bottle inspecting device |
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