Digital circuit for synchronizing a pulse train
US4578705A · kind A · utility
10Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1984 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Mar 23, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital synchronization operation circuit synchronizes a pulse train with horizontal synchronizing pulses contained in a received standard television signal which, after being demodulated in the television receiver, is present as the composite color signal and which is fed to an analog-to-digital converter clocked by a clock signal. The digital synchronization separation circuit has an improved phase resolution such that the phase resolution is greater than the resolution provided by the pulse width of clocking signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.