JPH0575899A - Controur compensation circuit - Google Patents
Controur compensation circuitInfo
- Publication number
- JPH0575899A JPH0575899A JP3231284A JP23128491A JPH0575899A JP H0575899 A JPH0575899 A JP H0575899A JP 3231284 A JP3231284 A JP 3231284A JP 23128491 A JP23128491 A JP 23128491A JP H0575899 A JPH0575899 A JP H0575899A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- contour compensation
- contour
- band
- video signal
- 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
- 230000003321 amplification Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Image Processing (AREA)
- Picture Signal Circuits (AREA)
- Processing Of Color Television Signals (AREA)
- Image Analysis (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、各種ディスプレイ装
置に用いられる輪郭補償回路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contour compensation circuit used in various display devices.
【0002】[0002]
【従来の技術】図2は従来の輪郭補償回路を備えた陰極
線管を用いたモノクロディスプレイ装置の映像増幅部の
構成図である。図において、1は輪郭補償回路で、輪郭
補償波形発生回路13、振幅調整回路14及び加算回路
10により構成されている。2. Description of the Related Art FIG. 2 is a block diagram of an image amplification unit of a monochrome display device using a cathode ray tube having a conventional contour compensation circuit. In the figure, reference numeral 1 denotes a contour compensation circuit, which includes a contour compensation waveform generation circuit 13, an amplitude adjustment circuit 14, and an addition circuit 10.
【0003】2はコントラスト調整回路で、輪郭補償回
路1から出てくる映像信号のコントラストを調整する。
3は出力回路で、反転増幅器から構成され、CRTのカ
ソードに接続されている。A contrast adjusting circuit 2 adjusts the contrast of the video signal output from the contour compensating circuit 1.
An output circuit 3 is composed of an inverting amplifier and is connected to the cathode of the CRT.
【0004】以上はモノクロディスプレイ装置の映像増
幅部であるが、カラーディスプレイ装置の場合は、図2
の構成の映像増幅部の3系統から構成されている。The above is the image amplification section of the monochrome display device.
It is composed of three systems of the image amplification section having the above configuration.
【0005】次に、動作について説明する。端子11か
ら入力された映像信号は輪郭補償回路1に入力される
が、この時輪郭補償波形発生回路13でこの映像信号の
輪郭補償波形を作り、その振幅調整を振幅調整回路14
で行ったのち、加算回路10でこの信号と端子11から
入力された映像信号とを加算する。Next, the operation will be described. The video signal input from the terminal 11 is input to the contour compensating circuit 1. At this time, the contour compensating waveform generating circuit 13 creates a contour compensating waveform of this video signal, and the amplitude adjustment is performed by the amplitude adjusting circuit 14.
After that, the addition circuit 10 adds this signal and the video signal input from the terminal 11.
【0006】ついで、コントラスト調整回路2に入力さ
れコントラスト調整されたのち、出力回路3で増幅され
てCRTのカソードに供給される。Next, after being input to the contrast adjusting circuit 2 and subjected to contrast adjustment, it is amplified by the output circuit 3 and supplied to the cathode of the CRT.
【0007】[0007]
【発明が解決しようとする課題】従来の輪郭補償回路は
以上のように構成されているので、二種類以上の違って
周波数帯域の映像信号の輪郭補償するとき、いずれか一
方の周波数帯域の輪郭補償波形を発生させて共用してい
るのだが、これでは他方の周波数帯域の映像信号に対し
て十分な輪郭補償範囲が得られず、効果があまりないと
いう問題点があった。Since the conventional contour compensating circuit is constructed as described above, when contour compensation of a video signal of two or more different frequency bands is performed, the contour of one of the frequency bands is compensated. Although a compensation waveform is generated and shared, this has a problem that a sufficient contour compensation range cannot be obtained for the video signal in the other frequency band and the effect is not so great.
【0008】この発明は上記のような問題点を解消する
ためになされたもので、各周波数帯域の映像信号に対し
て十分な輪郭補償が行えるようにした輪郭補償回路を提
供することを目的とする。The present invention has been made to solve the above problems, and an object of the present invention is to provide a contour compensation circuit capable of performing sufficient contour compensation for a video signal in each frequency band. To do.
【0009】[0009]
【課題を解決するための手段】この発明に係る輪郭補償
回路は、周波数帯域の違う映像信号に対し各々の輪郭補
償波形を発生させ、入力映像信号の周波数帯域によって
自動的に切り換わるように構成したものである。A contour compensating circuit according to the present invention is configured to generate respective contour compensating waveforms for video signals having different frequency bands, and to switch automatically according to the frequency band of an input video signal. It was done.
【0010】[0010]
【作用】この発明における輪郭補償回路は、各々の周波
数帯域に対応した輪郭補償波形を発生させ入力の映像信
号に対応して切り換えることで、十分な輪郭補償が得ら
れる。In the contour compensating circuit according to the present invention, the contour compensating waveform corresponding to each frequency band is generated and switched according to the input video signal, whereby sufficient contour compensation can be obtained.
【0011】[0011]
【実施例】実施例1.以下、この発明の一実施例を図面
にもとづいて説明する。EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings.
【0012】図1はこの発明の一実施例による輪郭補償
回路を備えた陰極線管を用いたモノクロディスプレイ装
置の映像増幅部の構成図であり、同図において、1〜
3、10〜11は従来例で説明をしたので省略する。FIG. 1 is a block diagram of an image amplifying portion of a monochrome display device using a cathode ray tube having a contour compensation circuit according to an embodiment of the present invention.
Since 3 and 10 to 11 have been described in the conventional example, the description thereof will be omitted.
【0013】なお、上記輪郭補償回路1は、広帯域用輪
郭補償回路4、振幅調整回路6の系統と、狭帯域用輪郭
補償回路5、振幅調整回路7の系統が並列にスイッチ8
に接続されており、端子12より同期信号を入力し、周
波数帯域判別回路9で帯域を判別してスイッチ8を制御
する。ついで、加算回路で端子11から入力された映像
信号と加算する。In the contour compensating circuit 1, the system of the broad band contour compensating circuit 4 and the amplitude adjusting circuit 6 and the system of the narrow band contour compensating circuit 5 and the amplitude adjusting circuit 7 are connected in parallel to the switch 8
The synchronizing signal is input from the terminal 12, the frequency band discriminating circuit 9 discriminates the band, and the switch 8 is controlled. Then, the addition circuit adds the video signal input from the terminal 11.
【0014】以上はモノクロディスプレイ装置の映像増
幅部であるが、カラーディスプレイ装置の場合は、図1
の構成の映像増幅部の3系統から構成されており、周波
数帯域判別回路9の出力が3系統それぞれに接続されて
いる。The image amplification section of the monochrome display device has been described above.
The image amplification unit having the above-mentioned configuration is composed of three systems, and the output of the frequency band discrimination circuit 9 is connected to each of the three systems.
【0015】次に、上記構成の動作について説明する。Next, the operation of the above configuration will be described.
【0016】端子11から入力された映像信号は、広帯
域用輪郭補償波形発生回路4に入力され、周知の技術を
用いて広帯域用の輪郭補償波形を発生させ、振幅調整回
路6において振幅調整されたのちスイッチ8に入力され
る。これと同時に狭帯域側も同様にスイッチ8に入力さ
れる。The video signal input from the terminal 11 is input to the wide band contour compensation waveform generation circuit 4, generates a wide band contour compensation waveform using a well-known technique, and is amplitude-adjusted by the amplitude adjustment circuit 6. Then, it is input to the switch 8. At the same time, the narrow band side is similarly input to the switch 8.
【0017】なお、同期信号は端子12から入力され、
周波数帯域判別回路9により広帯域か狭帯域かを判別
し、スイッチ8を帯域に合わせて制御する。このあとは
従来と同様に加算回路10で端子11からの入力映像信
号と加算し、コントラスト調整回路2においてコントラ
スト調整されたのち、出力回路3により増幅されてCR
Tのカソードに供給される。The synchronizing signal is input from the terminal 12,
The frequency band discriminating circuit 9 discriminates between a wide band and a narrow band, and controls the switch 8 according to the band. After that, as in the conventional case, the addition circuit 10 adds the input video signal from the terminal 11, the contrast is adjusted by the contrast adjustment circuit 2, and then the output circuit 3 amplifies and CRs.
It is supplied to the cathode of T.
【0018】[0018]
【発明の効果】以上のように、この発明によれば輪郭補
償波形発生回路を帯域ごとに別々に構成したので、すべ
ての使用帯域に対して、十分な輪郭補償量が得られる効
果がある。As described above, according to the present invention, since the contour compensation waveform generating circuit is separately configured for each band, there is an effect that a sufficient contour compensation amount can be obtained for all used bands.
【図1】この発明の一実施例による輪郭補償回路を備え
た陰極線管を用いたモノクロディスプレイ装置の映像増
幅部の構成図である。FIG. 1 is a configuration diagram of an image amplification unit of a monochrome display device using a cathode ray tube including a contour compensation circuit according to an embodiment of the present invention.
【図2】従来の輪郭補償回路を備えたモノクロディスプ
レイ装置の映像増幅部の構成図である。FIG. 2 is a configuration diagram of an image amplification unit of a monochrome display device including a conventional contour compensation circuit.
1 輪郭補償回路 2 コントラスト調整回路 3 出力回路 4 広帯域用輪郭補償波形発生回路 5 狭帯域用輪郭補償波形発生回路 6、7、14 振幅調整回路 8 スイッチ 9 周波数帯域判別回路 10 加算回路 11 映像信号入力端子 12 同期信号入力端子 13 輪郭補償波形発生回路 1 Contour compensation circuit 2 Contrast adjustment circuit 3 Output circuit 4 Wideband contour compensation waveform generation circuit 5 Narrowband contour compensation waveform generation circuit 6, 7, 14 Amplitude adjustment circuit 8 Switch 9 Frequency band discrimination circuit 10 Addition circuit 11 Video signal input Terminal 12 Sync signal input terminal 13 Contour compensation waveform generation circuit
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成4年3月2日[Submission date] March 2, 1992
【手続補正1】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】0007[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【0007】[0007]
【発明が解決しようとする課題】従来の輪郭補償回路は
以上のように構成されているので、二種類以上の違った
周波数帯域の映像信号の輪郭補償するとき、いずれか一
方の周波数帯域の輪郭補償波形を発生させて共用してい
るのだが、これでは他方の周波数帯域の映像信号に対し
て十分な輪郭補償範囲が得られず、効果があまりないと
いう問題点があった。Since INVENTION Problems to be Solved conventional contour compensation circuit is configured as described above, when the contour compensation of two or more different <br/> frequency band of the video signal, either Although the contour compensation waveform of the frequency band is generated and shared, this has a problem that a sufficient contour compensation range cannot be obtained for the video signal of the other frequency band and the effect is not so great.
【手続補正2】[Procedure Amendment 2]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図1[Name of item to be corrected] Figure 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図1】 [Figure 1]
Claims (2)
映像信号に対し、同数の各帯域用輪郭補償波形発生回路
を備えたことを特徴とする輪郭補償回路。1. A contour compensation circuit, comprising the same number of contour compensation waveform generation circuits for each band for two or more input video signals.
おいて、同期信号の周波数帯域を判別し、スイッチ等の
手段で必要な帯域の輪郭補償波形発生回路を自動選択す
ることを特徴とする輪郭補償回路。2. The contour compensating circuit according to claim 1, wherein the frequency band of the synchronizing signal is discriminated, and a contour compensating waveform generating circuit of a required band is automatically selected by means such as a switch. Contour compensation circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3231284A JPH0575899A (en) | 1991-09-11 | 1991-09-11 | Controur compensation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3231284A JPH0575899A (en) | 1991-09-11 | 1991-09-11 | Controur compensation circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0575899A true JPH0575899A (en) | 1993-03-26 |
Family
ID=16921196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3231284A Pending JPH0575899A (en) | 1991-09-11 | 1991-09-11 | Controur compensation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0575899A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000075916A1 (en) * | 1999-06-07 | 2000-12-14 | Seiko Epson Corporation | Image displaying apparatus and method, and image processing device and method |
-
1991
- 1991-09-11 JP JP3231284A patent/JPH0575899A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000075916A1 (en) * | 1999-06-07 | 2000-12-14 | Seiko Epson Corporation | Image displaying apparatus and method, and image processing device and method |
US7570237B2 (en) | 1999-06-07 | 2009-08-04 | Seiko Epson Corporation | Method and apparatus for adjusting quality of a displayed image |
US8537085B2 (en) | 1999-06-07 | 2013-09-17 | Seiko Epson Corporation | Method and apparatus for adjusting quality of a displayed image |
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