Synchronizing signal detecting apparatus for digital video cassette recorder
US5712741A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1995 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Oct 18, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/3027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A synchronizing signal detecting apparatus for a digital video cassette recorder (DVCR), which can detect a more stable synchronizing signal by detecting the synchronizing signal in a parallel processing method includes input signal convertor for converting input serial data, a first head switching pulse and a first clock into parallel data, a second head switching pulse and a second clock, a vertical synchronizing signal detector and a block synchronizing signal detector for respectively detecting a vertical synchronizing signal and a block synchronizing signal from the parallel data, second head switching pulse and second clock output from the input signal converter, and a data former for outputting finally output data in accordance with synchronizing patterns using the parallel and second clock. This apparatus allows a synchronizing signal to be detected more precisely. Also, the acquisition of slipped data is facilitated by rearranging output data in the unit of sync blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.