Video signal recording and reproducing apparatus and method suit

Details Video signal recording and reproducing apparatus and method suit Video signal recording and reproducing apparatus and method suit

1989-01-19

1990-11-20

Richardson, Robert L.

Dynamic magnetic information storage or retrieval

Manual input recording

360 331, H04N 576

Patent

active

049723359

ABSTRACT:
Video signals within one vertical scanning period are divided into a plurality of line block signals. These line block signals are shifted on time base, and a redundant interval (.tau..sub.H) is formed between two line block signals. Further, a plurality of segment signals, each of which includes a plurality of line block signals, are formed. A redundant interval (.tau..sub.S) is formed between two segment signals. The interval of the vertical blanking signal is shortened. Recorded video signals comprise the redundant intervals (.tau..sub.S) and the segment signals including the redundant intervals (.tau..sub.H) and the line block signals. A horizontal synchronizing signal of negative polarity, for example, is added in the redundant interval (.tau..sub.H). Magnetic heads are switched in the redundant interval (.tau..sub.S).

REFERENCES:
patent: 4463877 (1984-07-01), Hashimoto et al.
patent: 4525752 (1985-06-01), Watanbe et al.
patent: 4549227 (1985-10-01), Hashimoto et al.
patent: 4633330 (1986-12-01), Yamamitsu et al.

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