GB1053197A - - Google Patents
Info
- Publication number
- GB1053197A GB1053197A GB1053197DA GB1053197A GB 1053197 A GB1053197 A GB 1053197A GB 1053197D A GB1053197D A GB 1053197DA GB 1053197 A GB1053197 A GB 1053197A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phase
- signal
- signals
- colour
- delay
- 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.)
- Active
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
- H04N9/87—Regeneration of colour television signals
- H04N9/89—Time-base error compensation
-
- 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
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/93—Regeneration of the television signal or of selected parts thereof
- H04N5/95—Time-base error compensation
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
1,053,197. Colour television. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. June 30, 1965 [July 28, 1964], No. 27722/65. Heading H4F. Phase errors in the colour carrier of P.A.L. colour television signals derived from a magnetic recording apparatus 1 due to both speed fluctuations and differential phase effects are compensated by a system comprising: (1) means including an adder 6 to which the signals are applied over a direct path 4 and a one-lineduration delay path 5 whereby the carrier signals Q + jT and Q - jT due to two successive lines are combined to obtain a signal Q independent of phase modulation, (2) a phase comparator 7 in which the signal Q is compared with a signal of reference phase from a source 8 to obtain a control signal 9, and (3) a variable time delay device 2 through which the original signals pass to an output 3 and which is adjusted in delay by the control signal. In modified arrangements (not described in detail) stage 6 is replaced by a subtractor so that a signal in the phase T is obtained, or both an adder and a subtractor are employed and their outputs are brought into phase agreement and added. Delay device 2 may comprise a filter including a capacitor diode controlled by signal 9. Source 8 may comprise a quartz oscillator synchronized by colour synchronizing signals.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET26681A DE1227507B (en) | 1964-07-28 | 1964-07-28 | Circuit arrangement for eliminating phase errors in a color carrier |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1053197A true GB1053197A (en) |
Family
ID=7552971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1053197D Active GB1053197A (en) | 1964-07-28 |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT252340B (en) |
DE (1) | DE1227507B (en) |
GB (1) | GB1053197A (en) |
NZ (1) | NZ142423A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2736199C2 (en) * | 1977-08-11 | 1982-10-21 | Robert Bosch Gmbh, 7000 Stuttgart | Method and circuit arrangement for compensating for phase errors |
JPS5829104A (en) * | 1981-08-13 | 1983-02-21 | Pioneer Video Corp | Time axis compensator for reproducing signal |
-
0
- GB GB1053197D patent/GB1053197A/en active Active
- NZ NZ142423D patent/NZ142423A/xx unknown
-
1964
- 1964-07-28 DE DET26681A patent/DE1227507B/en active Pending
-
1965
- 1965-06-29 AT AT591865A patent/AT252340B/en active
Also Published As
Publication number | Publication date |
---|---|
NZ142423A (en) | |
AT252340B (en) | 1967-02-10 |
DE1227507B (en) | 1966-10-27 |
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