JPH05122577A - Video camera apparatus - Google Patents
Video camera apparatusInfo
- Publication number
- JPH05122577A JPH05122577A JP3282664A JP28266491A JPH05122577A JP H05122577 A JPH05122577 A JP H05122577A JP 3282664 A JP3282664 A JP 3282664A JP 28266491 A JP28266491 A JP 28266491A JP H05122577 A JPH05122577 A JP H05122577A
- Authority
- JP
- Japan
- Prior art keywords
- electronic zoom
- video signal
- information
- dsp
- enlargement
- 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
Links
Landscapes
- Picture Signal Circuits (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は一般家庭消費者用に開発
されたＶＴＲ一体型のビデオカメラ装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VTR-integrated video camera device developed for general consumers.
【０００２】[0002]
【従来の技術】近年、ＶＴＲ一体型ビデオカメラ装置
は、そのカメラ部映像信号処理部のディジタル化が進
み、そのディジタル処理の利点を活かし、映像を電気的
に拡大する電子ズーム機能の普及が急速に進んでいる。2. Description of the Related Art In recent years, in a VTR-integrated video camera device, a digitalization of a video signal processing unit of a camera unit thereof has progressed, and an electronic zoom function for electrically enlarging an image is rapidly spread by taking advantage of the digital processing. Is progressing to.
【０００３】以下に従来の電子ズームシステムについて
説明する。図２は従来の電子ズーム機能を有するカメラ
映像信号処理部を示すものである。図２において、１は
Ａ／Ｄ変換部でアナログ信号をディジタル信号に変換す
る。２はＤＳＰ（ディジタル信号処理）ブロックであ
り、５の制御用マイコンにより動作する。３は電子ズー
ム処理ブロック、７は画面情報を蓄積するメモリー部で
あり、６の制御用マイコンにより動作する。４はＤ／Ａ
変換部であり、ディジタル信号をアナログ信号に変換す
る。A conventional electronic zoom system will be described below. FIG. 2 shows a conventional camera video signal processing unit having an electronic zoom function. In FIG. 2, reference numeral 1 is an A / D converter which converts an analog signal into a digital signal. Reference numeral 2 is a DSP (digital signal processing) block, which is operated by the control microcomputer 5. Reference numeral 3 is an electronic zoom processing block, 7 is a memory unit for accumulating screen information, and is operated by the control microcomputer of 6. 4 is D / A
The conversion unit converts a digital signal into an analog signal.
【０００４】以上のように構成されたカメラ映像信号処
理部について、以下その動作について説明する。まず１
に入力されたアナログ映像信号はＡ／Ｄ変換処理により
８ビットディジタル信号としてＤＳＰブロック２に入力
される。ＤＳＰブロック２では従来のアナログ信号処理
と同様に、輪郭補正（アパーチャ処理），カラー化，同
時化等が行なわれ、輝度信号，色信号それぞれが８ビッ
トディジタル信号として３の電子ズーム処理ブロック３
に入力される。電子ズーム処理ブロック３に入力された
映像信号データは、１フィールド毎にメモリー部７に全
て蓄積され、制御用マイコン６からの指令にもとづき、
メモリー部７からデータを抽出，補間して画面の拡大作
業を行なう。電子ズーム処理の終了したディジタルデー
タはＤ／Ａ変換部４に入力され、アナログ信号に変換さ
れ出力される。The operation of the camera video signal processing unit configured as described above will be described below. First 1
The analog video signal input to is input to the DSP block 2 as an 8-bit digital signal by A / D conversion processing. Similar to the conventional analog signal processing, the DSP block 2 performs contour correction (aperture processing), colorization, synchronization, etc., and the electronic zoom processing block 3 of 3 is used as a luminance signal and a color signal as 8-bit digital signals.
Entered in. The video signal data input to the electronic zoom processing block 3 are all stored in the memory unit 7 for each field, and based on a command from the control microcomputer 6,
Data is extracted from the memory unit 7 and interpolated to enlarge the screen. The digital data for which the electronic zoom processing has been completed is input to the D / A conversion unit 4, converted into an analog signal and output.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら上記の従
来の構成では、輪郭補正を電子ズーム処理より前で実施
しているために、電子ズームによる画面拡大率が上がっ
ていった場合でも補正量が一定のために、画面の解像感
が急速に落ちていくという問題を有していた。However, in the above-mentioned conventional structure, since the contour correction is performed before the electronic zoom processing, the correction amount is constant even when the screen enlargement ratio by the electronic zoom increases. Therefore, there is a problem in that the sense of resolution of the screen rapidly decreases.
【０００６】本発明は上記従来の問題点を解決するもの
であり、電子ズームによる画面の拡大率に応じ、最適量
の輪郭補正の実施を提供することを目的とする。The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an optimum amount of contour correction according to the enlargement ratio of the screen by electronic zoom.
【０００７】[0007]
【課題を解決するための手段】この目的を達成するため
に、本発明のＤＳＰ（ディジタル信号処理）部は、電子
ズームによる画面の拡大率を検知することが可能な構成
を有している。In order to achieve this object, the DSP (digital signal processing) unit of the present invention has a structure capable of detecting the enlargement ratio of the screen by the electronic zoom.
【０００８】[0008]
【作用】この構成によって、ＤＳＰ部では電子ズームに
よる画面の拡大率に応じ、最適の輪郭補正が実施でき
る。With this configuration, the DSP unit can perform optimum contour correction according to the enlargement ratio of the screen by the electronic zoom.
【０００９】[0009]
【実施例】以下、本発明の一実施例について、図１を参
照しながら説明する。図１において、１はＡ／Ｄ変換
部、２はＤＳＰ（ディジタル信号処理）ブロックであ
り、ＤＳＰマイコン５により動作する。３は電子ズーム
処理ブロック、７はメモリー部であり、制御用マイコン
６により動作する。４はＤ／Ａ変換部である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, reference numeral 1 is an A / D converter, and 2 is a DSP (digital signal processing) block, which is operated by a DSP microcomputer 5. Reference numeral 3 is an electronic zoom processing block, and 7 is a memory unit, which is operated by the control microcomputer 6. Reference numeral 4 is a D / A converter.
【００１０】以上のように構成されたカメラ映像信号処
理部において、以下その動作について説明する。Ａ／Ｄ
変換部１に入力されたアナログ映像信号は、従来と同様
にＡ／Ｄ変換処理により８ビットのディジタル信号とし
てＤＳＰブロック２に入力される。ＤＳＰブロック２で
は従来と同様に輪郭補正，カラー化，同時化等が行なわ
れるが、輪郭補正に関しては従来と異なった処理が行な
われる。輪郭補正時、その補正量を決定する際に、電子
ズーム制御用マイコン６からＤＳＰ制御用マイコン５に
電子ズームの倍率情報が入力され、その倍率に応じて最
適な補正量が決定され実施される。具体的には倍率が上
がっていくにしたがい補正量を大きくする方向で決定さ
れ、画面の解像感の低下を防いでいる。以上のＤＳＰ２
における処理終了後は、従来と同様に、輝度信号，色信
号それぞれが電子ズーム処理ブロック３に入力され、電
子ズーム制御用マイコン６の指令にもとづき、メモリー
部７からのデータ抽出，補間作業により画面の拡大作業
を行ない、Ｄ／Ａ変換部４でアナログ映像信号として出
力される。The operation of the camera video signal processing unit configured as described above will be described below. A / D
The analog video signal input to the conversion unit 1 is input to the DSP block 2 as an 8-bit digital signal by A / D conversion processing as in the conventional case. The DSP block 2 performs contour correction, colorization, synchronization, and the like as in the conventional case, but the contour correction is different from the conventional processing. At the time of contour correction, when determining the correction amount, electronic zoom control microcomputer 6 inputs electronic zoom magnification information to DSP control microcomputer 5, and the optimum correction amount is determined and implemented according to the magnification. .. Specifically, it is determined in the direction of increasing the correction amount as the magnification increases, thereby preventing a reduction in the resolution of the screen. Above DSP2
After the processing in step 1, the luminance signal and the color signal are respectively input to the electronic zoom processing block 3 as in the conventional case, and the screen is extracted by the data extraction from the memory section 7 and the interpolation operation based on the command from the electronic zoom control microcomputer 6. And the D / A converter 4 outputs it as an analog video signal.
【００１１】[0011]
【発明の効果】以上のように本発明は、電子ズームによ
り、画面を電気的に拡大した際、その拡大率に応じて輪
郭補正量を可変できる構成を設けることにより、画面の
拡大時の解像感の低下を防ぐことのできる優れたカメラ
映像信号処理を実現できるものである。As described above, according to the present invention, when the screen is electrically enlarged by the electronic zoom, the contour correction amount can be varied according to the enlargement ratio, so that the solution at the time of enlarging the screen can be obtained. It is possible to realize excellent camera video signal processing capable of preventing deterioration in image quality.
【図１】本発明の一実施例におけるカメラ映像信号処理
のブロック図FIG. 1 is a block diagram of camera image signal processing according to an embodiment of the present invention.
【図２】従来のカメラ映像信号処理のブロック図FIG. 2 is a block diagram of conventional camera video signal processing.
１ Ａ／Ｄ変換部 ２ ＤＳＰブロック ３ 電子ズーム処理ブロック ４ Ｄ／Ａ変換部 ５ ＤＳＰマイコン ６ 制御用マイコン ７ メモリー部 1 A / D conversion unit 2 DSP block 3 Electronic zoom processing block 4 D / A conversion unit 5 DSP microcomputer 6 Control microcomputer 7 Memory unit
Claims (1)
するＡ／Ｄ変換部と、ディジタル映像信号を抽出，補間
する事により映像を電気的に拡大する電子ズーム処理部
と、その拡大率に応じて最適のアパーチャ（輪郭補正）
制御を実施するディジタル映像信号処理部と、ディジタ
ル映像信号をアナログ映像信号に変換するＤ／Ａ変換部
を備えたことを特徴とするビデオカメラ装置。1. An A / D conversion unit for converting an analog video signal into a digital signal, an electronic zoom processing unit for electrically enlarging an image by extracting and interpolating the digital video signal, and an electronic zoom processing unit according to the enlargement ratio. Optimal aperture (outline correction)
A video camera device comprising: a digital video signal processing unit for performing control; and a D / A conversion unit for converting a digital video signal into an analog video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3282664A JPH05122577A (en) | 1991-10-29 | 1991-10-29 | Video camera apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3282664A JPH05122577A (en) | 1991-10-29 | 1991-10-29 | Video camera apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05122577A true JPH05122577A (en) | 1993-05-18 |
Family
ID=17655453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3282664A Pending JPH05122577A (en) | 1991-10-29 | 1991-10-29 | Video camera apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05122577A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07203249A (en) * | 1993-12-18 | 1995-08-04 | Samsung Electron Co Ltd | Method and apparatus for correcting edge of video signal |
| US6538694B1 (en) | 1997-12-04 | 2003-03-25 | Victor Company Of Japan, Limited | Image pickup apparatus equipped with compatible-with-zooming type contour compensation circuit, compatible-with-image-pickup-conditions type image output circuit, and compatible-with-all-pixel-readout-system-solid-image-pickup-element type electronic zoom circuit |
| US7106386B2 (en) | 2001-07-30 | 2006-09-12 | Nec Viewtechnology, Ltd. | Device and method for improving picture quality |
| WO2007034886A1 (en) * | 2005-09-22 | 2007-03-29 | Matsushita Electric Industrial Co., Ltd. | Image reproducing device and image reproducing method |
| JP2008288803A (en) * | 2007-05-16 | 2008-11-27 | Panasonic Electric Works Co Ltd | Interphone device with television set |
| KR101012172B1 (en) * | 2003-03-19 | 2011-02-07 | 소니 주식회사 | Image pickup device and hilighting method for the contour of image |
| US8614752B2 (en) | 1999-09-14 | 2013-12-24 | Nikon Corporation | Electronic still camera with peaking function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6382066A (en) * | 1986-09-25 | 1988-04-12 | Sony Corp | Image pickup device with electronic zooming function |
| JPH01238280A (en) * | 1988-03-18 | 1989-09-22 | Toshiba Corp | Contour compensation device |
-
1991
- 1991-10-29 JP JP3282664A patent/JPH05122577A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6382066A (en) * | 1986-09-25 | 1988-04-12 | Sony Corp | Image pickup device with electronic zooming function |
| JPH01238280A (en) * | 1988-03-18 | 1989-09-22 | Toshiba Corp | Contour compensation device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07203249A (en) * | 1993-12-18 | 1995-08-04 | Samsung Electron Co Ltd | Method and apparatus for correcting edge of video signal |
| US6538694B1 (en) | 1997-12-04 | 2003-03-25 | Victor Company Of Japan, Limited | Image pickup apparatus equipped with compatible-with-zooming type contour compensation circuit, compatible-with-image-pickup-conditions type image output circuit, and compatible-with-all-pixel-readout-system-solid-image-pickup-element type electronic zoom circuit |
| US8614752B2 (en) | 1999-09-14 | 2013-12-24 | Nikon Corporation | Electronic still camera with peaking function |
| US7106386B2 (en) | 2001-07-30 | 2006-09-12 | Nec Viewtechnology, Ltd. | Device and method for improving picture quality |
| KR101012172B1 (en) * | 2003-03-19 | 2011-02-07 | 소니 주식회사 | Image pickup device and hilighting method for the contour of image |
| WO2007034886A1 (en) * | 2005-09-22 | 2007-03-29 | Matsushita Electric Industrial Co., Ltd. | Image reproducing device and image reproducing method |
| JP2008288803A (en) * | 2007-05-16 | 2008-11-27 | Panasonic Electric Works Co Ltd | Interphone device with television set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2008123086A (en) | Image processor and image processing method | |
| US9706079B2 (en) | Image sensor with scaler and image scaling method thereof | |
| US7477297B2 (en) | Combined optical and digital zoom | |
| JP4433883B2 (en) | White balance correction device, white balance correction method, program, and electronic camera device | |
| JPWO2008150017A1 (en) | Signal processing method and signal processing apparatus | |
| JP2000092361A (en) | Image pickup device | |
| JPH05122577A (en) | Video camera apparatus | |
| JP2921973B2 (en) | Image extraction method and image extraction device for specific object | |
| JP4244218B2 (en) | Imaging signal processing circuit and camera system | |
| US7978235B2 (en) | Electronic zooming device | |
| JP4689243B2 (en) | Image processing apparatus, image processing method, and digital camera | |
| JP2578409B2 (en) | Image processing device | |
| JPS6346881A (en) | Digital outline correcting circuit | |
| JP2002095003A (en) | Electronic camera | |
| JP2002330387A (en) | Electronic camera | |
| JPH0646317A (en) | Video signal processing circuit | |
| JP4407475B2 (en) | Camera image processing device | |
| JPH0638024A (en) | Image processor | |
| KR970011537B1 (en) | Image system | |
| JP2673995B2 (en) | Image signal processing device | |
| JP2614575B2 (en) | Video camera | |
| JPH1175112A (en) | Automatic gain control circuit | |
| JPH11341327A (en) | Digital camera | |
| KR100209712B1 (en) | Sampling frequency converting apparatus for digital camera | |
| JP2004248048A (en) | Device and program for generating video |