Circuit and method for reproducing a luminance signal compatibly

Details Circuit and method for reproducing a luminance signal compatibly Circuit and method for reproducing a luminance signal compatibly

1991-07-30

1993-06-15

Westin, Edward P.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

358138, H04N 578

Patent

active

052204650

ABSTRACT:
A luminance signal playback processing circuit is adapted to an improved VCR and reproduces the video signal recorded on the video tape by the existing VCR for maintaining a compatibility. The luminance signal playback processing circuit detects whether a frequency folding information is inserted in a synchronizing signal included in the reproduced luminance signal, and selects one of the luminance signal processing paths in accordance with the result of the detected frequency folding information, when the video signal recorded by the existing VCR is reproduced in the improved VCR to which the circuit of present invention is applied, thereby reproducing video signals recorded on the video tape by the existing VCR without deteriorating a picture quality.

REFERENCES:
patent: 4864424 (1989-09-01), Ochi et al.
patent: 5113265 (1992-05-01), Kobayashi et al.

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