Synchronizing signal detecting apparatus for digital video casse

Details Synchronizing signal detecting apparatus for digital video casse Synchronizing signal detecting apparatus for digital video casse

1995-10-18

1998-01-27

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

386 12, 386 84, G11B 509, H04N 980, H04N 5932

Patent

active

057127417

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.

REFERENCES:
patent: 4275466 (1981-06-01), Yamamoto
patent: 4769704 (1988-09-01), Hirai et al.
patent: 4943865 (1990-07-01), Hales et al.
patent: 5396377 (1995-03-01), Yang
patent: 5446715 (1995-08-01), Satamura

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