Apparatus for generating a detection clock for detecting digital data contained in a composite video signal and a data detector using detection clock
US5629738A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0352
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A detection clock generating apparatus generates a detection clock signal for detecting digital data contained in the vertical blanking period of a received composite video signal. A slicer generates a slicing reference signal based on the analog clock run-in signal and slices the received analog clock run-in signal by using the generated slicing reference signal. A synchronizing portion synchronizes the sliced data with an internal clock signal. An edge detecting portion detects the rising edges of pulses of the synchronized sliced data and outputs an edge detection signal. A clock generator generates a detection clock signal on based on the pulses of the edge detection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.