Method and apparatus for identifying the reproduction mode of a

Details Method and apparatus for identifying the reproduction mode of a Method and apparatus for identifying the reproduction mode of a

1990-11-08

1993-06-08

Envall, Jr., Roy N.

Facsimile and static presentation processing

Facsimile

Recording apparatus

H04N 979

Patent

active

052184471

ABSTRACT:
A reproduction mode identification circuit (1) is responsive to a horizontal synchronizing signal and a color rotary pulse for identifying whether the reproduction state of a double azimuth 4 head system VTR is the search reproduction or not of the SP mode. The reproduction mode identification circuit (1) provides a mode identification signal in response to whether a half period of the color rotary pulse is greater or not than a predetermined value smaller than the vertical synchronizing period.

REFERENCES:
patent: 4007485 (1977-02-01), Sato
patent: 4084176 (1978-04-01), Trost
patent: 4283737 (1981-08-01), Nikami
patent: 4668998 (1987-05-01), Aoki
patent: 4851930 (1989-07-01), Fukuda et al.

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