DE69127461T2 - Verfahren und vorrichtung zur nichtlinearen preemphasis und deemphasis zusammengesetzter videosignale - Google Patents
Verfahren und vorrichtung zur nichtlinearen preemphasis und deemphasis zusammengesetzter videosignaleInfo
- Publication number
- DE69127461T2 DE69127461T2 DE69127461T DE69127461T DE69127461T2 DE 69127461 T2 DE69127461 T2 DE 69127461T2 DE 69127461 T DE69127461 T DE 69127461T DE 69127461 T DE69127461 T DE 69127461T DE 69127461 T2 DE69127461 T2 DE 69127461T2
- Authority
- DE
- Germany
- Prior art keywords
- pct
- subcarrier
- signal
- deemphasis
- sec
- 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
Classifications
-
- 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
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- 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
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
-
- 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
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
- H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
- H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
- H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
- H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
- H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Television Signal Processing For Recording (AREA)
- Processing Of Color Television Signals (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Endoscopes (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Studio Devices (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Color Television Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB909027598A GB9027598D0 (en) | 1990-12-20 | 1990-12-20 | Compatible non linear pre-emphasis for composite video signals |
PCT/GB1991/002288 WO1992011732A1 (en) | 1990-12-20 | 1991-12-20 | Compatible non linear pre-emphasis for composite video signals |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69127461D1 DE69127461D1 (de) | 1997-10-02 |
DE69127461T2 true DE69127461T2 (de) | 1998-03-26 |
Family
ID=10687293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69127461T Expired - Fee Related DE69127461T2 (de) | 1990-12-20 | 1991-12-20 | Verfahren und vorrichtung zur nichtlinearen preemphasis und deemphasis zusammengesetzter videosignale |
Country Status (11)
Country | Link |
---|---|
US (1) | US5629742A (de) |
EP (1) | EP0563167B1 (de) |
JP (1) | JPH06504657A (de) |
AT (1) | ATE157496T1 (de) |
AU (1) | AU657938B2 (de) |
CA (1) | CA2099131A1 (de) |
DE (1) | DE69127461T2 (de) |
FI (1) | FI932849A (de) |
GB (1) | GB9027598D0 (de) |
HK (1) | HK1002442A1 (de) |
WO (1) | WO1992011732A1 (de) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1327076A (fr) * | 1962-03-12 | 1963-05-17 | Cft Comp Fse Television | Perfectionnement aux dispositifs de transmission de signaux video |
BE633733A (de) * | 1962-06-18 | |||
US4200889A (en) * | 1976-12-27 | 1980-04-29 | Basf Aktiengesellschaft | Complementary pre-emphasis and de-emphasis circuits for a video signal transfer channel |
JPS6030295A (ja) * | 1983-07-29 | 1985-02-15 | Victor Co Of Japan Ltd | 搬送色信号の記録再生装置 |
JPS60153061U (ja) * | 1984-03-21 | 1985-10-12 | パイオニア株式会社 | ノイズ除去回路 |
US4684983A (en) * | 1986-07-31 | 1987-08-04 | Rca Corporation | Non-linear processor for reducing the dynamic range of a digitized error signal |
GB2203917B (en) * | 1987-03-27 | 1991-10-30 | Roger Neil Robinson | Improved encoder for television signals |
GB8707533D0 (en) * | 1987-03-30 | 1987-05-07 | Indep Broadcasting Authority | Pre-emphasis for(mac)television signal |
US4922331A (en) * | 1987-06-23 | 1990-05-01 | Sony Corporation | Color video signal reproducing apparatus having trap circuit and comb-filter for filtering a chrominance signal band of a wide band luminance signal |
US4918515A (en) * | 1988-06-20 | 1990-04-17 | Faroudja Y C | Compatible television transmission system with separate preemphasis path within single channel |
US5225910A (en) * | 1990-11-20 | 1993-07-06 | Nippon Television Network Corporation | Adaptive operation type low noise television system |
-
1990
- 1990-12-20 GB GB909027598A patent/GB9027598D0/en active Pending
-
1991
- 1991-12-20 US US08/078,168 patent/US5629742A/en not_active Expired - Fee Related
- 1991-12-20 DE DE69127461T patent/DE69127461T2/de not_active Expired - Fee Related
- 1991-12-20 EP EP92901581A patent/EP0563167B1/de not_active Expired - Lifetime
- 1991-12-20 CA CA002099131A patent/CA2099131A1/en not_active Abandoned
- 1991-12-20 AU AU91195/91A patent/AU657938B2/en not_active Ceased
- 1991-12-20 WO PCT/GB1991/002288 patent/WO1992011732A1/en active IP Right Grant
- 1991-12-20 AT AT92901581T patent/ATE157496T1/de not_active IP Right Cessation
- 1991-12-20 JP JP4502144A patent/JPH06504657A/ja active Pending
-
1993
- 1993-06-18 FI FI932849A patent/FI932849A/fi unknown
-
1998
- 1998-02-24 HK HK98101403A patent/HK1002442A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AU9119591A (en) | 1992-07-22 |
DE69127461D1 (de) | 1997-10-02 |
EP0563167B1 (de) | 1997-08-27 |
FI932849A0 (fi) | 1993-06-18 |
EP0563167A1 (de) | 1993-10-06 |
US5629742A (en) | 1997-05-13 |
AU657938B2 (en) | 1995-03-30 |
WO1992011732A1 (en) | 1992-07-09 |
CA2099131A1 (en) | 1992-06-21 |
FI932849A (fi) | 1993-08-04 |
JPH06504657A (ja) | 1994-05-26 |
ATE157496T1 (de) | 1997-09-15 |
HK1002442A1 (en) | 1998-08-21 |
GB9027598D0 (en) | 1991-02-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8327 | Change in the person/name/address of the patent owner |
Owner name: NDS LTD., WEST DRAYTON, MIDDLESEX, GB |
|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |