Apparatus for recording video signal through frequency modulatio

Details Apparatus for recording video signal through frequency modulatio Apparatus for recording video signal through frequency modulatio

1991-04-22

1993-10-19

Chin, Tommy

Facsimile and static presentation processing

Facsimile

Recording apparatus

358330, H04N 591

Patent

active

052551016

ABSTRACT:
A video signal recording apparatus, typically a high-band 8-mm, (Hi 8) video tape recorder, records a video signal through frequency modulation on a magnetic tape. The video signal recording apparatus has a preemphasizing circuit for preemphasizing a video signal, a clipping circuit for clipping the preemphasized video signal at a clipping level, and a frequency modulator for frequency-modulating the clipped video signal. The clipping circuit comprises a white clipping circuit for applying a plurality of selectable clipping voltages corresponding to different white clipping levels, respectively, and a dark clipping circuit for applying a plurality of selectable clipping voltages corresponding to different dark clipping levels, respectively. The clipping levels are selected depending on the type of the magnetic tape, e.g., whether it is an evaporated tape or a metal tape.

REFERENCES:
patent: 4481547 (1984-11-01), Sato
patent: 4597021 (1986-01-01), Yamamitsu et al.
patent: 4860105 (1989-08-01), Sakaguchi et al.
patent: 4979043 (1990-12-01), Suzuki et al.

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