HK77391A - Video recorder with recording of a modified colour carrier - Google Patents
Video recorder with recording of a modified colour carrierInfo
- Publication number
- HK77391A HK77391A HK773/91A HK77391A HK77391A HK 77391 A HK77391 A HK 77391A HK 773/91 A HK773/91 A HK 773/91A HK 77391 A HK77391 A HK 77391A HK 77391 A HK77391 A HK 77391A
- Authority
- HK
- Hong Kong
- Prior art keywords
- colour carrier
- frequency signals
- carrier frequency
- colour
- modified
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/83—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Paints Or Removers (AREA)
- Television Signal Processing For Recording (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Color Printing (AREA)
Abstract
1. A video recorder with recording of a modified colour carrier (Fm), which is obtained by lowering the frequency of a PAL colour carrier (F), and is supplied in the said PAL colour carrier (F) to a PAL propagation time signal division circuit (7-9), which delivers at its two outputs two colour carrier frequency signals (Fu , +- Fv ) corresponding to the two modulation axes (U, V) and in which these colour carrier frequency signals are relieved of their amplitude modulation and are re-modulated and the re-modulated colour carrier frequency signals are added together in order to produce the modified colour carrier, characterised by the following features : a) the two colour carrier frequency signals (F'u , +- F'v ) are each lowered per se in frequency by the same amount (stages 11, 11a), b) the colour carrier frequency signals (F'u , +- F'v ) which have been reduced in frequency are supplied to amplitude limiters (13, 13a) in order to relieve them of their amplitude modulation and are remodulated by video frequency signals (b and c in Figs. 3b and 3c) which are obtained by amplitude modulation (15) of the colour carrier frequency signals (Fu , +- Fv ) before frequency conversion c) the amplitude re-modulated colour carrier frequency signals (F"u , +- F"v ) are added together to produce the modified colour carrier (Fm) which is to be recorded.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823241736 DE3241736A1 (en) | 1982-11-11 | 1982-11-11 | VIDEO RECORDER RECORDING A MODIFIED COLOR CARRIER |
Publications (1)
Publication Number | Publication Date |
---|---|
HK77391A true HK77391A (en) | 1991-10-11 |
Family
ID=6177882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK773/91A HK77391A (en) | 1982-11-11 | 1991-10-03 | Video recorder with recording of a modified colour carrier |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0111150B1 (en) |
JP (1) | JPS59100693A (en) |
AT (1) | ATE48359T1 (en) |
DE (2) | DE3241736A1 (en) |
HK (1) | HK77391A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3731166A1 (en) * | 1987-09-17 | 1989-03-30 | Thomson Brandt Gmbh | VIDEO RECORDER WITH IMPROVED COLOR RECORDING |
JPH02134984A (en) * | 1988-11-15 | 1990-05-23 | Mitsubishi Electric Corp | Contour correcting device for carrier chrominance signal |
JP4740195B2 (en) * | 2007-06-12 | 2011-08-03 | カヤバ工業株式会社 | Hydraulic shock absorber |
JP4740196B2 (en) * | 2007-06-12 | 2011-08-03 | カヤバ工業株式会社 | Hydraulic shock absorber |
JP4895970B2 (en) * | 2007-10-16 | 2012-03-14 | カヤバ工業株式会社 | Valve device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NZ136861A (en) * | 1962-12-31 | |||
US4188638A (en) * | 1975-04-22 | 1980-02-12 | U.S. Philips Corporation | Color television signal having color-difference signals alternating between two carriers |
DE2820602A1 (en) * | 1978-05-11 | 1979-11-15 | Bosch Gmbh Robert | Colour carrier modifier for PAL colour TV signals - has signal splitting device, phase switch and adder delivering modified chrominance signal |
US4359756A (en) * | 1981-06-29 | 1982-11-16 | Rca Corporation | Chrominance signal limiter |
-
1982
- 1982-11-11 DE DE19823241736 patent/DE3241736A1/en active Granted
-
1983
- 1983-11-03 EP EP83110935A patent/EP0111150B1/en not_active Expired
- 1983-11-03 DE DE8383110935T patent/DE3380919D1/en not_active Expired - Fee Related
- 1983-11-03 AT AT83110935T patent/ATE48359T1/en not_active IP Right Cessation
- 1983-11-11 JP JP58211109A patent/JPS59100693A/en active Granted
-
1991
- 1991-10-03 HK HK773/91A patent/HK77391A/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE3241736C2 (en) | 1991-10-10 |
JPH0362359B2 (en) | 1991-09-25 |
DE3380919D1 (en) | 1990-01-04 |
EP0111150B1 (en) | 1989-11-29 |
DE3241736A1 (en) | 1984-07-19 |
JPS59100693A (en) | 1984-06-09 |
ATE48359T1 (en) | 1989-12-15 |
EP0111150A2 (en) | 1984-06-20 |
EP0111150A3 (en) | 1987-04-01 |
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