MY108674A - Television transmission system - Google Patents
Television transmission systemInfo
- Publication number
- MY108674A MY108674A MYPI91000343A MYPI19910343A MY108674A MY 108674 A MY108674 A MY 108674A MY PI91000343 A MYPI91000343 A MY PI91000343A MY PI19910343 A MYPI19910343 A MY PI19910343A MY 108674 A MY108674 A MY 108674A
- Authority
- MY
- Malaysia
- Prior art keywords
- additional information
- present
- colour
- amplitude
- synchronising
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/007—Systems with supplementary picture signal insertion during a portion of the active part of a television signal, e.g. during top and bottom lines in a HDTV letter-box system
-
- 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
- H04N11/167—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 a resolution-increasing signal being multiplexed to the PAL-system signal, e.g. PAL-PLUS-system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
- H04N11/24—High-definition television systems
- H04N11/28—High-definition television systems involving bandwidth reduction, e.g. subsampling
Landscapes
- Multimedia (AREA)
- Signal Processing (AREA)
- Engineering & Computer Science (AREA)
- Color Television Systems (AREA)
- Television Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Closed-Circuit Television Systems (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Fire-Extinguishing Compositions (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Details Of Television Systems (AREA)
- Studio Devices (AREA)
- Telephonic Communication Services (AREA)
Abstract
FOR COMPATIBILITY REASONS THE ADDITIONAL INFORMATION NEEDED IN LETTERBOX COLOUR TV SYSTEMS IS TRANSMITTED WITH MARKEDLY REDUCED AMPLITUDE, WHEREBY LOW FREQUENCIES HAVE A RELATIVE HIGH AMPLITUDE. THEREFORE THE SIGNAL-TO-NOISE RATIO IS REDUCED AND IN PRESENT TV RECEIVERS SYNCHRONISING ERRORS OCCUR. BY TRANSMITTING THE ADDITIONAL INFORMATION IN THE FORM OF A VESTIGAL SIDEBAND MODULATION OF THE COLOUR CARRIER THE AMPLITUDE OF THE ADDITIONAL INFORMATION CAN BECOME ENLARGED WITHOUT THE ARISING OF SYNCHRONISING ERRORS IN PRESENT TV RECEIVERS. THE NYQUIST-SLOPE AT THE COLOUR CARRIER IS ADVANTAGEOUSLY GENERATED BY USING PRESENT IF FILTERS. IF THE PHASE COINCIDES WITH THE V PHASE OF THE COLOUR CARRIER POSSIBLE DISTURBANCES OF THE COMPATIBLE RECEPTION HAVE AN ADVANTAGEOUSLY LOW LEVEL. (FIG. 3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4007092A DE4007092A1 (en) | 1990-03-07 | 1990-03-07 | TV video signal transmission system of letter-box type - modulates chrominance carrier by extra information signals using filters |
DE4021698A DE4021698A1 (en) | 1990-07-07 | 1990-07-07 | Letter-box colour television system |
Publications (1)
Publication Number | Publication Date |
---|---|
MY108674A true MY108674A (en) | 1996-10-31 |
Family
ID=25890851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI91000343A MY108674A (en) | 1990-03-07 | 1991-02-05 | Television transmission system |
Country Status (17)
Country | Link |
---|---|
EP (1) | EP0518946B1 (en) |
JP (1) | JPH05505076A (en) |
KR (1) | KR100212384B1 (en) |
CN (1) | CN1027486C (en) |
AT (1) | ATE131336T1 (en) |
AU (1) | AU642725B2 (en) |
BR (1) | BR9106110A (en) |
DE (1) | DE59107039D1 (en) |
DK (1) | DK0518946T3 (en) |
ES (1) | ES2082199T3 (en) |
FI (1) | FI923975A (en) |
GR (1) | GR3018339T3 (en) |
HK (1) | HK112396A (en) |
HU (1) | HUT63724A (en) |
MY (1) | MY108674A (en) |
NO (1) | NO179350C (en) |
WO (1) | WO1991014346A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU647792B2 (en) * | 1990-06-06 | 1994-03-31 | Philips Electronics N.V. | Letterbox extended television system |
DE4111979A1 (en) | 1991-04-12 | 1992-10-15 | Thomson Brandt Gmbh | DEVICE FOR IMAGE SIGNAL RECORDING AND / OR PLAYBACK |
EP0543038A1 (en) * | 1991-11-19 | 1993-05-26 | Samsung Electronics Co., Ltd. | Color-under chroma channel encoded with auxiliary signals |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3414452C1 (en) * | 1984-04-17 | 1985-10-10 | Robert Bosch Gmbh, 7000 Stuttgart | Method for compatibly transmitting a colour television signal containing additional information |
US4882614A (en) * | 1986-07-14 | 1989-11-21 | Matsushita Electric Industrial Co., Ltd. | Multiplex signal processing apparatus |
US5053859A (en) * | 1987-09-02 | 1991-10-01 | Scientific-Atlanta, Inc. | High definition B-MAC television signal transmission system |
DE3930964A1 (en) * | 1989-09-15 | 1991-03-28 | Thomson Brandt Gmbh | TELEVISION TRANSMISSION SYSTEM |
-
1991
- 1991-02-05 MY MYPI91000343A patent/MY108674A/en unknown
- 1991-03-02 JP JP3505399A patent/JPH05505076A/en active Pending
- 1991-03-02 HU HU922674A patent/HUT63724A/en unknown
- 1991-03-02 DK DK91905643.2T patent/DK0518946T3/en active
- 1991-03-02 KR KR1019920702152A patent/KR100212384B1/en not_active IP Right Cessation
- 1991-03-02 ES ES91905643T patent/ES2082199T3/en not_active Expired - Lifetime
- 1991-03-02 WO PCT/EP1991/000397 patent/WO1991014346A1/en active IP Right Grant
- 1991-03-02 DE DE59107039T patent/DE59107039D1/en not_active Expired - Fee Related
- 1991-03-02 AU AU74554/91A patent/AU642725B2/en not_active Ceased
- 1991-03-02 EP EP91905643A patent/EP0518946B1/en not_active Expired - Lifetime
- 1991-03-02 AT AT91905643T patent/ATE131336T1/en not_active IP Right Cessation
- 1991-03-02 BR BR919106110A patent/BR9106110A/en not_active IP Right Cessation
- 1991-03-06 CN CN91101356A patent/CN1027486C/en not_active Expired - Fee Related
-
1992
- 1992-09-04 FI FI923975A patent/FI923975A/en unknown
- 1992-09-04 NO NO923460A patent/NO179350C/en unknown
-
1995
- 1995-12-08 GR GR950403458T patent/GR3018339T3/en unknown
-
1996
- 1996-06-27 HK HK112396A patent/HK112396A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BR9106110A (en) | 1993-02-24 |
NO179350B (en) | 1996-06-10 |
FI923975A0 (en) | 1992-09-04 |
CN1027486C (en) | 1995-01-18 |
KR100212384B1 (en) | 1999-08-02 |
NO923460L (en) | 1992-09-04 |
NO179350C (en) | 1996-09-18 |
GR3018339T3 (en) | 1996-03-31 |
DE59107039D1 (en) | 1996-01-18 |
HUT63724A (en) | 1993-09-28 |
ATE131336T1 (en) | 1995-12-15 |
NO923460D0 (en) | 1992-09-04 |
AU642725B2 (en) | 1993-10-28 |
DK0518946T3 (en) | 1996-02-12 |
CN1054696A (en) | 1991-09-18 |
EP0518946B1 (en) | 1995-12-06 |
JPH05505076A (en) | 1993-07-29 |
ES2082199T3 (en) | 1996-03-16 |
AU7455491A (en) | 1991-10-10 |
WO1991014346A1 (en) | 1991-09-19 |
EP0518946A1 (en) | 1992-12-23 |
HK112396A (en) | 1996-07-05 |
FI923975A (en) | 1992-09-04 |
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