JPH03214871A - CRT display device - Google Patents
CRT display deviceInfo
- Publication number
- JPH03214871A JPH03214871A JP2009602A JP960290A JPH03214871A JP H03214871 A JPH03214871 A JP H03214871A JP 2009602 A JP2009602 A JP 2009602A JP 960290 A JP960290 A JP 960290A JP H03214871 A JPH03214871 A JP H03214871A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power supply
- crt
- synchronization
- 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
- 238000001514 detection method Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000010894 electron beam technology Methods 0.000 description 2
- XBDRAUPLGHAFCU-UHFFFAOYSA-N 3-[6-amino-5-(6-ethoxynaphthalen-2-yl)pyridin-3-yl]-n-[2-(dimethylamino)ethyl]benzamide Chemical compound C1=CC2=CC(OCC)=CC=C2C=C1C(C(=NC=1)N)=CC=1C1=CC=CC(C(=O)NCCN(C)C)=C1 XBDRAUPLGHAFCU-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Television Receiver Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は映像信号を画面として表示するＣＲＴディスプ
レイ装置に係り、特にその電源制御に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a CRT display device that displays a video signal on a screen, and particularly to power control thereof.
第２図は従来のＣＲＴディスプレイ装置の一例を示すブ
ロック図である。第２図中１は映像信号Ｓ１を増幅しＣ
ＲＴ５に出力する映像増幅回路、２は映像信号Ｓｌ中の
同期信号を分離して取り出す同期分離回路、３はこの回
路２より出力する同期信号に同期した鋸歯状波電流をＣ
ＲＴ５の偏向コイル４に流す偏向回路、４はＣＲＴ５の
ネック部に取り付けられ電子ビームを偏向する偏向コイ
ル、５は映像信号を画面として表示するＣＲＴ，７は偏
向回路３の出力を入力してＣＲＴ５に高電圧を供給する
高圧回路、６は各回路１．２．３７に電源電圧を供給す
る電源回路、８は電源人力Ｖ１の入切を行う電源スイッ
チである。FIG. 2 is a block diagram showing an example of a conventional CRT display device. 1 in Figure 2 amplifies the video signal S1 and C
2 is a sync separation circuit that separates and extracts the sync signal in the video signal Sl; 3 is a sawtooth wave current synchronized with the sync signal output from circuit 2;
4 is a deflection coil that is attached to the neck of the CRT 5 and deflects the electron beam; 5 is a CRT that displays the video signal on a screen; 7 is a deflection circuit that inputs the output of the deflection circuit 3 to the CRT 5. 6 is a power supply circuit that supplies power supply voltage to each circuit 1, 2, 37, and 8 is a power switch that turns on and off the power source V1.
このような従来の装置にあっては、映像信号Ｓ１が入力
されない時であっても電源を断とせず放置する事があり
、この場合不要な電源電力の消費，高圧回路７が動作し
ているための火災等の危険性，寿命の短縮等の課題があ
り、また映像信号ｓ１の入力線路が長距離にわたり他の
信号ライン．電源ライン等を隣接している場合クロスト
ークにより、画面に不要なノイズが表示され、見苦しい
等の課題があった。In such conventional devices, even when the video signal S1 is not input, the power supply may not be turned off, and in this case, unnecessary power is consumed and the high voltage circuit 7 is operated. This poses problems such as fire hazards and shortened service life, and the input line for the video signal s1 spans a long distance and is connected to other signal lines. When power lines, etc. are adjacent to each other, crosstalk causes unnecessary noise to be displayed on the screen, creating an unsightly appearance.
本発明装置は上記の課題を解決するため、第１図示のよ
うに映像信号Ｓ１を増幅しＣＲＴ５に出力する映像増幅
回路１と、挾像信号ｓｌ中の同期信号を分離して取り出
す同期分離回路２と、この回路２より出力する同期信号
に同期した鋸歯状波電流をＣＲＴ５の偏向コイル４に流
す偏向回路３と、この回路３の出力を入力してＣＲＴ５
に高電圧を供給する高圧回路７と、各回路１．２．３７
に電源電圧を供給する電源回路６とよりなるＣＲＴディ
スプレイ装置において、映像信号Ｓｌ中の同期信号を検
出する同期検出回路９と、この回路９により検出された
同期信号により電源回路６を閉成する電源制御回路１０
を設けてなる構成としたものである。In order to solve the above-mentioned problems, the device of the present invention includes a video amplification circuit 1 that amplifies the video signal S1 and outputs it to the CRT 5 as shown in the first diagram, and a synchronization separation circuit that separates and extracts the synchronization signal in the frame image signal sl. 2, a deflection circuit 3 that sends a sawtooth wave current synchronized with the synchronization signal output from this circuit 2 to the deflection coil 4 of the CRT 5;
High voltage circuit 7 that supplies high voltage to each circuit 1.2.37
In a CRT display device comprising a power supply circuit 6 that supplies a power supply voltage, a synchronization detection circuit 9 detects a synchronization signal in a video signal Sl, and the power supply circuit 6 is closed by the synchronization signal detected by this circuit 9. Power supply control circuit 10
This is a configuration in which the following is provided.
映像慣号Ｓ１が入力している時は挾像信号ｓｌ中の同期
信号が同期検出回路９により検出され、この検出された
同期信号により電源制御回路１０が動作せしめられて電
源回路６に電源人力Ｖ１が印加され、主なる回路１．２
．３．７が動作せしめられることになる。When the video signal S1 is being input, the synchronization signal in the frame image signal sl is detected by the synchronization detection circuit 9, and the detected synchronization signal causes the power supply control circuit 10 to operate, causing the power supply circuit 6 to be powered manually. V1 is applied, main circuit 1.2
．． 3.7 will be activated.
映像信号Ｓ１が人力していない時は、同期検出回路９に
より映像信号Ｓｌ中の同期信号が検出されないので、電
源回路６には電源人力Ｖｌが印加されず、同期信号検出
回路９以外の回路は動作することがない。When the video signal S1 is not powered, the synchronization detection circuit 9 does not detect the synchronization signal in the video signal Sl, so the power supply Vl is not applied to the power supply circuit 6, and the circuits other than the synchronization signal detection circuit 9 are It never works.
以下図面に基づいて本発明の実施例を説明する。 Embodiments of the present invention will be described below based on the drawings.
第１図は本発明装置の一実施例を示すブロック図で、１
は映像信号３１を増幅しＣＲＴ５に出力する映像増幅回
路、２は映像信号Ｓｌ中の同期信号を分離して取り出す
同期分離回路、３はこの回路２より出力する同期信号に
同期した鋸歯状波電流をＣＲＴ５の偏向コイル４に流す
偏向回路、４はＣＲＴ５のネック部に取り付けられ電子
ビームを偏向する偏向コイノベ５は映像信号を画面とし
て表示するＣＲＴ，７は偏向回路３の出力を入力してＣ
ＲＴ５に高電圧を供給する高圧回路、６は各回路１．２
．３．７に電源電圧を供給する電源回路、８は電源人力
Ｖ１の大切を行う電源スイッチである。FIG. 1 is a block diagram showing one embodiment of the device of the present invention.
is a video amplification circuit that amplifies the video signal 31 and outputs it to the CRT 5; 2 is a synchronization separation circuit that separates and extracts the synchronization signal in the video signal Sl; and 3 is a sawtooth wave current synchronized with the synchronization signal output from this circuit 2. 4 is attached to the neck of the CRT 5 and deflects the electron beam. Koinobe 5 is a CRT that displays the video signal as a screen. 7 inputs the output of the deflection circuit 3 and connects it to the CRT.
High voltage circuit that supplies high voltage to RT5, 6 is each circuit 1.2
．． 3.7 is a power supply circuit that supplies a power supply voltage, and 8 is a power switch that controls the power source V1.
本実施例はこのような構成のＣＲＴディスプレイ装置に
おいて、映像信号Ｓｌ中の同期信号を検出する画期検出
回路９と、この回路９により検出された同期信号により
電源回路６を閉成する電源制御回路１０を設けてなる構
成となっている。In this embodiment, a CRT display device having such a configuration includes a breakthrough detection circuit 9 that detects a synchronization signal in a video signal Sl, and a power supply control circuit that closes a power supply circuit 6 based on the synchronization signal detected by this circuit 9. The configuration includes a circuit 10.
電源制御回路ｌＯはリレー等のスイッチ素子で構成する
ことができる。The power supply control circuit IO can be configured with a switch element such as a relay.
映像信号Ｓ１が人力している時は映像信号Ｓｌ中の同期
信号が同期検出回路９により検出され、この検出された
同期信号により電源制御回路１０が動作せしめられて電
源回路６に電源人力Ｖ１が印加され、主なる回路１．２
．３．７が動作せしめられることになる。When the video signal S1 is powered manually, a synchronization signal in the video signal Sl is detected by the synchronization detection circuit 9, and the detected synchronization signal causes the power supply control circuit 10 to operate, so that the power supply circuit 6 receives the power supply V1. Main circuit 1.2
．． 3.7 will be activated.
映像信号Ｓ１が入力していない時は、同期検出回路９に
より映像信号Ｓｌ中の同期慣号が検出されないので、電
源回路６には電源人力Ｖ１が印加されず、同期信号検出
回路９以外の回路は動作することがない。When the video signal S1 is not input, the synchronization detection circuit 9 does not detect the synchronization code in the video signal Sl, so the power supply V1 is not applied to the power supply circuit 6, and the circuits other than the synchronization signal detection circuit 9 never works.
即ち、同期検出回路９が同期信号を検出している時にの
み、映像償号Ｓ１が入力している （有る）と判断して
電源制御回路１０を動作させ、電源回路６に電源人力Ｖ
１を印加し、すべての回路１，２，３．６．７．９．１
０を動作させることになる。That is, only when the synchronization detection circuit 9 detects the synchronization signal, it is determined that the video signal S1 is input (present), and the power supply control circuit 10 is operated, and the power supply circuit 6 is supplied with the power supply voltage V.
Apply 1 to all circuits 1, 2, 3.6.7.9.1
0 will be operated.
上述のように本発明によれば、映像信号Ｓ１を増幅しＣ
ＲＴ５に出力する映像増幅回路１と、映像信号Ｓｌ中の
同期信号を分離して取り出す同期分離回路２と、この回
路２より゛出力する同期信号に同期した鋸歯状波電流を
ＣＲＴ５の偏向コイル４に流す偏向回路３と、この回路
３の出力を入力してＣＲＴ５に高電圧を供給する高圧回
路７と、各回路１．２．３．７に電源電圧を供給する電
源回路６とよりなるＣＲＴディスプレイ装置において、
映像信号Ｓｌ中の同期信号を検出する同期検出回路９と
、この回路９により検出された同期信号により電源回路
６を閉成する電源制御回路ｌＯを設けてなるので、映像
信号Ｓｌ中の同期信号の有無を検出し、主回路１ ，
２ ．３ ．７の電源の大切を行う事により無慣号
時における電力の省力化，高電圧回路７の動作による危
険の防止．装置の寿命の延長，入力ラインのクロストー
クによるノイズ表示の防止等を図ることができ、数多く
のＣＲＴディスプレイ装置を使用したシステムでは特に
有効となる。As described above, according to the present invention, the video signal S1 is amplified and C
A video amplification circuit 1 outputs to the RT5, a synchronization separation circuit 2 that separates and extracts the synchronization signal in the video signal Sl, and a sawtooth wave current synchronized with the synchronization signal outputted from this circuit 2 to the deflection coil 4 of the CRT5. A CRT consisting of a deflection circuit 3 that supplies the current to the CRT 5, a high voltage circuit 7 that inputs the output of this circuit 3 and supplies a high voltage to the CRT 5, and a power supply circuit 6 that supplies power supply voltage to each circuit 1.2.3.7. In a display device,
Since it is provided with a synchronization detection circuit 9 that detects a synchronization signal in the video signal Sl, and a power supply control circuit lO that closes the power supply circuit 6 based on the synchronization signal detected by this circuit 9, the synchronization signal in the video signal Sl is Detects the presence or absence of main circuit 1,
2. 3. By taking care of the power supply in step 7, power consumption can be saved when there is no inertia, and dangers caused by the operation of high voltage circuit 7 can be prevented. It is possible to extend the life of the device, prevent noise display due to input line crosstalk, etc., and is particularly effective in a system using a large number of CRT display devices.
第１図は本発明装置の一実施例を示すブロック図、第２
図は従来のＣＲＴディスプレイ装置の一例を示すブロッ
ク図である。
１・・・・・・映像増幅回路、２・・・・・・同期分離
回路、３・・・・・・偏向回路、４・・・・・・偏向コ
イル、５・・・・・・ＣＲＴ、６・・・・・・電源回路
、７・・・・・・高圧回路、９・・・・・・同期検出回
路、１０・・・・・・電源制御回路。FIG. 1 is a block diagram showing one embodiment of the device of the present invention, and FIG.
The figure is a block diagram showing an example of a conventional CRT display device. 1... Video amplification circuit, 2... Synchronization separation circuit, 3... Deflection circuit, 4... Deflection coil, 5... CRT , 6... Power supply circuit, 7... High voltage circuit, 9... Synchronization detection circuit, 10... Power supply control circuit.
Claims (1)
回路（１）と、映像信号Ｓ１中の同期信号を分離して取
り出す同期分離回路（２）と、この回路（２）より出力
する同期信号に同期した鋸歯状波電流をＣＲＴ（５）の
偏向コイル（４）に流す偏向回路（３）と、この回路（
３）の出力を入力してＣＲＴ（５）に高電圧を供給する
高圧回路（７）と、各回路（１．２．３．７）に電源電
圧を供給する電源回路（６）とよりなるＣＲＴディスプ
レイ装置において、映像信号Ｓ１中の同期信号を検出す
る同期検出回路（９）と、この回路（９）により検出さ
れた同期信号により電源回路（６）を閉成する電源制御
回路（１０）を設けてなるＣＲＴディスプレイ装置。A video amplification circuit (1) that amplifies the video signal S1 and outputs it to the CRT (5), a synchronization separation circuit (2) that separates and extracts the synchronization signal in the video signal S1, and a synchronization signal output from this circuit (2). A deflection circuit (3) that flows a sawtooth wave current synchronized with a signal to a deflection coil (4) of a CRT (5), and this circuit (
It consists of a high voltage circuit (7) that inputs the output of 3) and supplies high voltage to the CRT (5), and a power supply circuit (6) that supplies power supply voltage to each circuit (1.2.3.7). In a CRT display device, a synchronization detection circuit (9) detects a synchronization signal in a video signal S1, and a power supply control circuit (10) that closes a power supply circuit (6) based on the synchronization signal detected by this circuit (9). A CRT display device equipped with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009602A JPH03214871A (en) | 1990-01-19 | 1990-01-19 | CRT display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009602A JPH03214871A (en) | 1990-01-19 | 1990-01-19 | CRT display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03214871A true JPH03214871A (en) | 1991-09-20 |
Family
ID=11724860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009602A Pending JPH03214871A (en) | 1990-01-19 | 1990-01-19 | CRT display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03214871A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5389952A (en) * | 1992-12-02 | 1995-02-14 | Cordata Inc. | Low-power-consumption monitor standby system |
| DE19534729A1 (en) * | 1995-03-03 | 1996-09-12 | Mitsubishi Electric Corp | Display unit using cathode ray tube to display video signal as image |
| US5821924A (en) * | 1992-09-04 | 1998-10-13 | Elonex I.P. Holdings, Ltd. | Computer peripherals low-power-consumption standby system |
| KR100474256B1 (en) * | 1997-03-11 | 2005-07-07 | 삼성전자주식회사 | Power consumption control circuit of tilt correction coil |
-
1990
- 1990-01-19 JP JP2009602A patent/JPH03214871A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5821924A (en) * | 1992-09-04 | 1998-10-13 | Elonex I.P. Holdings, Ltd. | Computer peripherals low-power-consumption standby system |
| US5389952A (en) * | 1992-12-02 | 1995-02-14 | Cordata Inc. | Low-power-consumption monitor standby system |
| US5648799A (en) * | 1992-12-02 | 1997-07-15 | Elonex I.P. Holdings, Ltd. | Low-power-consumption monitor standby system |
| US5880719A (en) * | 1992-12-02 | 1999-03-09 | Eloney I.P. Holdings L.T.D. | Low-power-consumption monitor standby system |
| DE19534729A1 (en) * | 1995-03-03 | 1996-09-12 | Mitsubishi Electric Corp | Display unit using cathode ray tube to display video signal as image |
| US5671017A (en) * | 1995-03-03 | 1997-09-23 | Mitsubishi Denki Kabushiki Kaisha | Display unit including circuit for controlling connection to a power source based on presence or absence of a sync signal |
| DE19534729C2 (en) * | 1995-03-03 | 1998-02-12 | Mitsubishi Electric Corp | Display unit |
| KR100474256B1 (en) * | 1997-03-11 | 2005-07-07 | 삼성전자주식회사 | Power consumption control circuit of tilt correction coil |
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