KR930004803B1 - 비데오 신호 처리 시스템 - Google Patents
비데오 신호 처리 시스템 Download PDFInfo
- Publication number
- KR930004803B1 KR930004803B1 KR1019850001465A KR850001465A KR930004803B1 KR 930004803 B1 KR930004803 B1 KR 930004803B1 KR 1019850001465 A KR1019850001465 A KR 1019850001465A KR 850001465 A KR850001465 A KR 850001465A KR 930004803 B1 KR930004803 B1 KR 930004803B1
- Authority
- KR
- South Korea
- Prior art keywords
- video signal
- signal
- magnitude
- output
- digital
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
- H04N5/59—Control of contrast or brightness in dependence upon beam current of cathode ray tube
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
- H04N5/165—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/645—Beam current control means
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Picture Signal Circuits (AREA)
- Processing Of Color Television Signals (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
Claims (4)
- 혹 영상 표시 레벨을 포함하는 복수의 비데오 신호 정보 레벨을 한정하는 정보 소지 비트를 갖춘 디지탈 비데오 신호(20, 21...27)원(14)과, 상기 신호원으로부터의 비데오 신호에 응답하는 영상 표시 수단(35)과, 상기 표시 수단에 의해 전도된 임계 레벨 이상의 과잉 전류의 크기를 나타내는 제어 신호(VC)를 발생하는 제어 수단(50)과, 상기 표시 수단에 의해 전도된 과잉 전류를 제한하기 위해 상기 비데오 신호의 크기를 제어하도록 상기 비데오 신호원에 상기 제어 신호를 결하하기 위한 수단(55)를 구비하되, 상기 비데오 신호 흑 레벨은 상기 제어된 비데오 신호의 변화에 따라 바람직하지 못하게 변하기 쉬운, 비데오 신호 처리 시스템에 있어서, 상기 비데오 신호원(14)은 상기 디지탈 비데오 신호의 값 및 상기 기준 전압의 크기와 관련된 크기를 갖는 출력 아날로그 신호(노드 A)를 제공하기 위해, 상기 디지탈 비데오 신호에 응답하고 관련 기준 전압(VR)을 갖는 디지탈-아날로그 신호 변환기 수단(17)을 포함하며, 상기 제어 신호(VC)는 상기 기준 전압의 크기를 변화시키기 위한 상기 변환기 수단(17)에 결합되어 상기 과잉 전류를 제한하도록, 상기 비데오 신호원으로부터의 출력 아날로그 비데오 신호의 크기를 제어하며, 상기 제어 신호의 크기에 관련된 크기를 갖는 보상 신호(노드 B)를 발생하는 수단(60, R2)과, 상기 비데오 신호 흑 레벨 변화를 금지하기 위해서, 상기 보상 신호를 상기 비데오 신호원에 DC 결합하기 위한 수단(R1)을 특징으로 하는 비데오 신호 처리 시스템.
- 제1항에 있어서, 상기 제어 신호(VC)는 상기 표시 수단(35)에 의해 전도된 과잉 피크 및 평균 전류를 나타내는 것을 특징으로 하는 비데오 신호 처리 시스템.
- 제1항 또는 2항에 있어서, 상기 보상 신호 발생 수단(60, R2) 및 상기 DC 결합 수단(R1)은 상기 변환기 수단(17)으로부터의 상기 출력 아날로그 신호 및 상기 보상 신호를 출력(노드 B)에서 결합시켜, 상기 비데오 신호 흑 레벨의 변화를 실제로 무효화시키도록 동작되는 것을 특징으로 하는 비데오 신호 처리 시스템.
- 제3항에 있어서, 상기 디지탈 비데오 신호(20, 21, ...27)는 혹 영상 표시 레벨 M을 포함하는 복수의 비데오 신호 정보 레벨을 한정하는 N 정보 소지 비트를 포함하고, 상기 DC 결합 수단은 제1임피던스(R1)를 나타내는 제1전류 경로(R1)를 통하여 상기 출력(노드 B)에 상기 출력 아날로그 신호를 결합하고, 상기 보상 신호 발생수단(60, R2)은 제2임피던스(R2)를 나타내는 제2전류 경로(R2)를 통하여 상기 출력(노드 B)에 상기 보상 신호를 결합시키며, 상기 제2임피던스 대 상기 제1임피던스의 비는 식 R2/R1=[(2N-1)-M]/M으로 주어지는 것을 특징으로 하는 비데오 신호 처리 시스템.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/587,583 US4633320A (en) | 1984-03-08 | 1984-03-08 | Video signal processor with automatic kinescope beam current limiter |
| US587.583 | 1984-03-08 | ||
| US587583 | 1984-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR850006823A KR850006823A (ko) | 1985-10-16 |
| KR930004803B1 true KR930004803B1 (ko) | 1993-06-08 |
Family
ID=24350379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019850001465A Expired - Fee Related KR930004803B1 (ko) | 1984-03-08 | 1985-03-07 | 비데오 신호 처리 시스템 |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4633320A (ko) |
| JP (1) | JPS60206384A (ko) |
| KR (1) | KR930004803B1 (ko) |
| AT (1) | AT395086B (ko) |
| AU (1) | AU583492B2 (ko) |
| CA (1) | CA1228159A (ko) |
| DE (1) | DE3508168A1 (ko) |
| ES (1) | ES540833A0 (ko) |
| FI (1) | FI79434C (ko) |
| FR (1) | FR2561051B1 (ko) |
| GB (1) | GB2155739B (ko) |
| HK (1) | HK24093A (ko) |
| IT (1) | IT1183466B (ko) |
| SE (1) | SE454832B (ko) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8502637A (nl) * | 1985-03-06 | 1986-10-01 | Philips Nv | Beeldweergeefinrichting. |
| NL8502636A (nl) * | 1985-03-06 | 1986-10-01 | Philips Nv | Beeldweergeefinrichting. |
| US4799107A (en) * | 1987-04-06 | 1989-01-17 | Rca Licensing Corporation | Auxiliary gain control apparatus for a television receiver |
| FR2640839B1 (fr) * | 1988-12-20 | 1991-03-15 | Portenseigne Radiotechnique | Appareil de reproduction d'image video muni d'un reglage de contraste, et procede de reglage du contraste d'un tel appareil de reproduction |
| GB9006250D0 (en) * | 1990-03-20 | 1990-05-16 | Rca Licensing Corp | Non-linear beam current limiter |
| US5313294A (en) * | 1990-03-20 | 1994-05-17 | Rca Thomson Licensing Corporation | Beam current limiting arrangement having a peak amplitude, responsive threshold |
| US5200829A (en) * | 1991-12-16 | 1993-04-06 | Thomson Consumer Electronics, Inc. | Contrast beam current limiting arrangement with secondary brightness beam current limiting provisions |
| JP3267061B2 (ja) * | 1994-08-29 | 2002-03-18 | 松下電器産業株式会社 | Abl回路とacl回路と輝度・色差信号処理回路とテレビジョン受像機 |
| DE19709681A1 (de) * | 1997-03-11 | 1998-09-17 | Thomson Brandt Gmbh | Schaltung zur Überwachung des Strahlstroms in einer Farbildröhre |
| US7236203B1 (en) * | 2004-04-22 | 2007-06-26 | National Semiconductor Corporation | Video circuitry for controlling signal gain and reference black level |
| US7277135B1 (en) * | 2004-07-23 | 2007-10-02 | National Semiconductor Corporation | Video display signal brightness control circuit |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4137552A (en) * | 1977-05-05 | 1979-01-30 | Rca Corporation | Automatic beam current limiter with independently determined threshold level and dynamic control range |
| DE2750911A1 (de) * | 1977-11-14 | 1979-05-17 | Joerg Troeger | Miederkorsage |
| US4207591A (en) * | 1978-02-09 | 1980-06-10 | Rca Corporation | Gated automatic beam current limiter in a video signal processing system |
| US4167025A (en) * | 1978-02-09 | 1979-09-04 | Rca Corporation | Automatic peak beam current limiter |
| US4253121A (en) * | 1978-10-12 | 1981-02-24 | Rca Corporation | Plural sequential operating mode automatic kinescope beam current limiter |
| US4209808A (en) * | 1979-03-26 | 1980-06-24 | Rca Corporation | Stabilized automatic brightness control network in a video signal processing system including an automatic kinescope beam current limiter |
| US4344021A (en) * | 1980-07-21 | 1982-08-10 | Rca Corporation | System for compensating for transfer characteristic variations of electron guns |
| US4376288A (en) * | 1981-08-27 | 1983-03-08 | Rca Corporation | Signal gain control with DC compensation |
| US4403253A (en) * | 1981-12-28 | 1983-09-06 | General Electric Company | Uniform distribution video processor with controlled reference voltages |
| US4516152A (en) * | 1983-05-23 | 1985-05-07 | Rca Corporation | Video signal processor with automatic kinescope white balance and beam current limiter control systems |
-
1984
- 1984-03-08 US US06/587,583 patent/US4633320A/en not_active Expired - Fee Related
-
1985
- 1985-02-21 CA CA000474883A patent/CA1228159A/en not_active Expired
- 1985-02-22 AU AU39081/85A patent/AU583492B2/en not_active Ceased
- 1985-03-01 SE SE8501012A patent/SE454832B/sv not_active IP Right Cessation
- 1985-03-01 FI FI850856A patent/FI79434C/fi not_active IP Right Cessation
- 1985-03-01 ES ES540833A patent/ES540833A0/es active Granted
- 1985-03-05 IT IT19752/85A patent/IT1183466B/it active
- 1985-03-07 JP JP60046307A patent/JPS60206384A/ja active Granted
- 1985-03-07 KR KR1019850001465A patent/KR930004803B1/ko not_active Expired - Fee Related
- 1985-03-07 GB GB08505949A patent/GB2155739B/en not_active Expired
- 1985-03-07 FR FR858503372A patent/FR2561051B1/fr not_active Expired - Lifetime
- 1985-03-07 DE DE19853508168 patent/DE3508168A1/de active Granted
- 1985-03-08 AT AT0070385A patent/AT395086B/de not_active IP Right Cessation
-
1993
- 1993-03-18 HK HK240/93A patent/HK24093A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2155739A (en) | 1985-09-25 |
| SE8501012L (sv) | 1985-09-09 |
| SE454832B (sv) | 1988-05-30 |
| IT1183466B (it) | 1987-10-22 |
| ES8603135A1 (es) | 1985-12-01 |
| FI850856A0 (fi) | 1985-03-01 |
| JPH0513432B2 (ko) | 1993-02-22 |
| CA1228159A (en) | 1987-10-13 |
| FI79434B (fi) | 1989-08-31 |
| JPS60206384A (ja) | 1985-10-17 |
| DE3508168C2 (ko) | 1988-01-28 |
| KR850006823A (ko) | 1985-10-16 |
| GB2155739B (en) | 1987-09-30 |
| US4633320A (en) | 1986-12-30 |
| FI850856L (fi) | 1985-09-09 |
| FR2561051A1 (fr) | 1985-09-13 |
| IT8519752A0 (it) | 1985-03-05 |
| FR2561051B1 (fr) | 1991-02-01 |
| DE3508168A1 (de) | 1985-09-12 |
| SE8501012D0 (sv) | 1985-03-01 |
| AU3908185A (en) | 1985-09-12 |
| FI79434C (fi) | 1989-12-11 |
| HK24093A (en) | 1993-03-26 |
| ATA70385A (de) | 1992-01-15 |
| AT395086B (de) | 1992-09-10 |
| ES540833A0 (es) | 1985-12-01 |
| GB8505949D0 (en) | 1985-04-11 |
| AU583492B2 (en) | 1989-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4263622A (en) | Automatic kinescope biasing system | |
| EP0149334B1 (en) | Beam current limiter | |
| JPH0391380A (ja) | ビデオ信号処理装置 | |
| JP2899680B2 (ja) | ビデオ表示装置及び該装置を制御する方法 | |
| EP0414158B1 (en) | Control signal generator for a television system | |
| US4516152A (en) | Video signal processor with automatic kinescope white balance and beam current limiter control systems | |
| US4599642A (en) | Video signal processor with bias error compensation | |
| KR930004803B1 (ko) | 비데오 신호 처리 시스템 | |
| CA1093206A (en) | Brightness control apparatus | |
| US4562479A (en) | Automatic kinescope beam current limiter | |
| CA2023851C (en) | Amplifier arrangement for producing a controllable non-linear transfer characteristic useful for improving the contrast of an image | |
| KR910009882B1 (ko) | 비데오 신호 처리 시스템 | |
| KR930009361B1 (ko) | 바이어스 에러 저감용 자동 제어 장치 | |
| US3647944A (en) | Kinescope bias arrangement to provide both constant amplitude dc restoration pulses and arc discharge protection | |
| GB2156637A (en) | Video output amplifier | |
| US4584596A (en) | Television receiver alignment system | |
| US4523233A (en) | Automatic bias control system with compensated sense point | |
| KR930009362B1 (ko) | 바이어스 에러 보상을 갖는 비데오 신호 처리기 | |
| EP0174738B1 (en) | Display device bias sensing circuit | |
| CN1008502B (zh) | 电视信号处理器的误差补偿控制系统 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PA0109 | Patent application |
St.27 status event code: A-0-1-A10-A12-nap-PA0109 |
|
| R17-X000 | Change to representative recorded |
St.27 status event code: A-3-3-R10-R17-oth-X000 |
|
| PG1501 | Laying open of application |
St.27 status event code: A-1-1-Q10-Q12-nap-PG1501 |
|
| A201 | Request for examination | ||
| P11-X000 | Amendment of application requested |
St.27 status event code: A-2-2-P10-P11-nap-X000 |
|
| P13-X000 | Application amended |
St.27 status event code: A-2-2-P10-P13-nap-X000 |
|
| PA0201 | Request for examination |
St.27 status event code: A-1-2-D10-D11-exm-PA0201 |
|
| E902 | Notification of reason for refusal | ||
| PE0902 | Notice of grounds for rejection |
St.27 status event code: A-1-2-D10-D21-exm-PE0902 |
|
| T11-X000 | Administrative time limit extension requested |
St.27 status event code: U-3-3-T10-T11-oth-X000 |
|
| T11-X000 | Administrative time limit extension requested |
St.27 status event code: U-3-3-T10-T11-oth-X000 |
|
| T11-X000 | Administrative time limit extension requested |
St.27 status event code: U-3-3-T10-T11-oth-X000 |
|
| T11-X000 | Administrative time limit extension requested |
St.27 status event code: U-3-3-T10-T11-oth-X000 |
|
| T11-X000 | Administrative time limit extension requested |
St.27 status event code: U-3-3-T10-T11-oth-X000 |
|
| P11-X000 | Amendment of application requested |
St.27 status event code: A-2-2-P10-P11-nap-X000 |
|
| P13-X000 | Application amended |
St.27 status event code: A-2-2-P10-P13-nap-X000 |
|
| G160 | Decision to publish patent application | ||
| PG1605 | Publication of application before grant of patent |
St.27 status event code: A-2-2-Q10-Q13-nap-PG1605 |
|
| E701 | Decision to grant or registration of patent right | ||
| PE0701 | Decision of registration |
St.27 status event code: A-1-2-D10-D22-exm-PE0701 |
|
| GRNT | Written decision to grant | ||
| PR0701 | Registration of establishment |
St.27 status event code: A-2-4-F10-F11-exm-PR0701 |
|
| PR1002 | Payment of registration fee |
St.27 status event code: A-2-2-U10-U11-oth-PR1002 Fee payment year number: 1 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 4 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 5 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 6 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 7 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 8 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 9 |
|
| FPAY | Annual fee payment |
Payment date: 20020605 Year of fee payment: 10 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 10 |
|
| LAPS | Lapse due to unpaid annual fee | ||
| PC1903 | Unpaid annual fee |
St.27 status event code: A-4-4-U10-U13-oth-PC1903 Not in force date: 20030609 Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE |
|
| PC1903 | Unpaid annual fee |
St.27 status event code: N-4-6-H10-H13-oth-PC1903 Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE Not in force date: 20030609 |
|
| P22-X000 | Classification modified |
St.27 status event code: A-4-4-P10-P22-nap-X000 |