JPS6449495A - System for controlling sampling clock phase - Google Patents
System for controlling sampling clock phaseInfo
- Publication number
- JPS6449495A JPS6449495A JP62205079A JP20507987A JPS6449495A JP S6449495 A JPS6449495 A JP S6449495A JP 62205079 A JP62205079 A JP 62205079A JP 20507987 A JP20507987 A JP 20507987A JP S6449495 A JPS6449495 A JP S6449495A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- color
- phase reference
- reference signal
- synchronization
- 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.)
- Granted
Links
Landscapes
- Color Television Systems (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
PURPOSE:To execute the phase synchronization of the color burst of a color television signal with a horizontal synchronization, by using two kinds of first and second phase reference signals. CONSTITUTION:At a transmission part, a color subcarrier and horizontal synchronization generator 3a and a frequency-dividing circuit 5 generated the phase reference signal synchronizing with the color burst signal of an input color television signal and the horizontal synchronization. The phase reference signal is sampled and transmitted at every fixed sample of a transmission clock from a transmission path clock generating circuit 9. At a receiving part, a feed-back is reproduced so that the phase reference signal decoded by a decoding circuit 16 and the phase reference signal generated by a color subcarrier and horizontal synchronizing circuit 21 and a frequency-dividing circuit 18 can be made into a fixed phase relation. Thus, the phase synchronization of the color burst with horizontal synchronization can be executed.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205079A JPS6449495A (en) | 1987-08-20 | 1987-08-20 | System for controlling sampling clock phase |
US07/234,057 US4843455A (en) | 1987-08-20 | 1988-08-19 | Color television signal sampling clock phase control system |
CA000575206A CA1294701C (en) | 1907-08-20 | 1988-08-19 | Color television signal sampling clock phase control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205079A JPS6449495A (en) | 1987-08-20 | 1987-08-20 | System for controlling sampling clock phase |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6449495A true JPS6449495A (en) | 1989-02-23 |
JPH0575317B2 JPH0575317B2 (en) | 1993-10-20 |
Family
ID=16501073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62205079A Granted JPS6449495A (en) | 1907-08-20 | 1987-08-20 | System for controlling sampling clock phase |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6449495A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6510236B1 (en) | 1998-12-11 | 2003-01-21 | International Business Machines Corporation | Authentication framework for managing authentication requests from multiple authentication devices |
-
1987
- 1987-08-20 JP JP62205079A patent/JPS6449495A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6510236B1 (en) | 1998-12-11 | 2003-01-21 | International Business Machines Corporation | Authentication framework for managing authentication requests from multiple authentication devices |
Also Published As
Publication number | Publication date |
---|---|
JPH0575317B2 (en) | 1993-10-20 |
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