KR940011112B1 - 텔레비젼신호변환장치 및 비선형 레벨 보정장치 - Google Patents
텔레비젼신호변환장치 및 비선형 레벨 보정장치 Download PDFInfo
- Publication number
- KR940011112B1 KR940011112B1 KR1019910009390A KR910009390A KR940011112B1 KR 940011112 B1 KR940011112 B1 KR 940011112B1 KR 1019910009390 A KR1019910009390 A KR 1019910009390A KR 910009390 A KR910009390 A KR 910009390A KR 940011112 B1 KR940011112 B1 KR 940011112B1
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- level
- nonlinear
- circuit
- characteristic
- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
- H04N7/0152—High-definition television systems using spatial or temporal subsampling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0125—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards being a high definition standard
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0135—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes
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- 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
- H04N9/642—Multi-standard receivers
-
- 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
- H04N9/67—Circuits for processing colour signals for matrixing
-
- 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
- H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
- H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Television Systems (AREA)
Abstract
Description
Claims (5)
- 소정의 비선형특성에 의거하여 비선형으로 전송된 고품위 텔레비젼신호의 신호레벨을 보정하는 비선형 레벨보정수단과, 상기 비선형레벨보정수단으로 부터의 출력신호를 상기 고품위 텔레비젼신호와는 다른 주사선수를 가지는 표준텔레비젼 방식의 휘도신호 및 색도신호를 변환하는 신호변환수단과, 상기 신호변환수단으로부터의 표준텔레비젼 방식의 휘도신호 및 색신호를 3원색신호로 변환하는 역매트릭스수단과, 상기 역매트릭스수단으로부터의 출력신호를 표시하는 화상표시수단을 구비하고, 상기 비선형레벨보정수단이 비선형 전송을 위해 전송측에 있어서 휘도신호에 대해서 시행되는 비선형 레벨 확정특성의 역특성과 상기 화상표시 수단이 가지는 특성간의 차를 보정하는 것을 특징으로 하는 텔레비젼신호변환장치.
- 제 1 항에 있어서, 상기 신호변환수단은, 대역폭이 압축된 상태하에서 전송된 화상데이터를 원화상신호로 복원하는 내삽수단과, 상기 내삽수단으로부터의 출력신호의 주사선수를 표준텔레비젼방식의 주사선수로 변환하는 주사선밀도변환수단으로 구성된 것을 특징으로 하는 텔레비젼신호변환장치.
- 제 1 항에 있어서, 상기 화상표시수단은, 비선형전광특성의 곡선이 입력신호레벨에서의 기울기 증가와 같이 증가하는 비선형전광특성을 가지는 것을 특징으로 하는 텔레비젼신호변환장치.
- 입력신호레벨을 검출하는 신호레벨검출수단과, 상기 신호레벨검출수단으로부터의 출력신호에 응해서 소정의 정수값을 발생하는 보정값 발생수단과, 상기 보정값 발생수단으로부터의 출력신호와 그의 입력신호를 가산하는 가산수단을 구비한 것을 특징으로 하는 비선형 레벨 보정장치.
- 제 4 항에 있어서, 상기 가산수단의 입력신호는, 소정의 영상신호를 전송측에서는 선형처리를 시행하고 그의 전송만은 비선형 처리를 시행하는 전송방식으로 전송되는 고품위 텔레비젼신호인 것을 특징으로 하는 비선형 레벨 보정장치.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2148994A JPH0440754A (ja) | 1990-06-07 | 1990-06-07 | 信号変換装置 |
| JP2-148994 | 1990-06-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920001958A KR920001958A (ko) | 1992-01-30 |
| KR940011112B1 true KR940011112B1 (ko) | 1994-11-23 |
Family
ID=15465330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019910009390A Expired - Fee Related KR940011112B1 (ko) | 1990-06-07 | 1991-06-07 | 텔레비젼신호변환장치 및 비선형 레벨 보정장치 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5311297A (ko) |
| JP (1) | JPH0440754A (ko) |
| KR (1) | KR940011112B1 (ko) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2095756C (en) * | 1992-08-14 | 2001-04-24 | Albert D. Edgar | Method and apparatus for linear color processing |
| JPH0816129A (ja) * | 1994-04-27 | 1996-01-19 | Canon Inc | 画像処理装置 |
| US6160532A (en) * | 1997-03-12 | 2000-12-12 | Seiko Epson Corporation | Digital gamma correction circuit, gamma correction method, and a liquid crystal display apparatus and electronic device using said digital gamma correction circuit and gamma correction method |
| JP2000013814A (ja) * | 1998-06-19 | 2000-01-14 | Pioneer Electron Corp | 映像信号処理回路 |
| US6970208B1 (en) * | 2001-09-21 | 2005-11-29 | Lsi Logic Corporation | Block move engine with gamma and color conversions |
| US7661120B2 (en) * | 2003-11-26 | 2010-02-09 | Wegener Communications, Inc. | Automated transport stream apparatus and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62172873A (ja) * | 1986-01-27 | 1987-07-29 | Nippon Hoso Kyokai <Nhk> | 直線伝送方法 |
| JPH0748877B2 (ja) * | 1986-11-28 | 1995-05-24 | 日本放送協会 | コンポ−ネント映像信号伝送方式 |
| AU607033B2 (en) * | 1988-01-12 | 1991-02-21 | Sanyo Electric Co., Ltd. | Auto iris/gamma correction apparatus for making automatic exposure adjustment and/or automatic gamma correction in response to video signal and image sensing apparatus comprising such auto iris/gamma correction apparatus |
| DE69017061T2 (de) * | 1989-04-12 | 1995-09-07 | Philips Electronics Nv | Interpolationsschaltung für ein Bildsignal. |
-
1990
- 1990-06-07 JP JP2148994A patent/JPH0440754A/ja active Pending
-
1991
- 1991-06-03 US US07/709,234 patent/US5311297A/en not_active Expired - Fee Related
- 1991-06-07 KR KR1019910009390A patent/KR940011112B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0440754A (ja) | 1992-02-12 |
| KR920001958A (ko) | 1992-01-30 |
| US5311297A (en) | 1994-05-10 |
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