Still-video camera for inhibiting read-out of a video signal whe

Details Still-video camera for inhibiting read-out of a video signal whe Still-video camera for inhibiting read-out of a video signal whe

1989-09-13

1991-09-17

Groody, James J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358909, H04N 314, H04N 5335, H04N 5225

Patent

active

050499963

ABSTRACT:
In a still-video camera, a video signal representing the image of a photographed subject is written in a video floppy during one revolution of the floppy, namely during an interval between one phase pulse PG and the next. Immediately after the phase pulse PG is generated, a field-shift pulse FS for reading the video signal out of an electronic image pick-up device is outputted. Read-out from the electronic image pick-up device by the field-shift pulse FS is inhibited during the time that a shutter is open. Writing is carried out from the moment of the next phase pulse PG after read-inhibit is cancelled. If the inhibition on read-out from the electronic image pick-up device were to be cancelled between the phase pulse PG and the field-shift pulse FS, read-out of the video signal by the field-shift pulse FS would be carried out, but it would not be possible to carry out recording without waiting for the next phase pulse PG. By providing reading and writing at timings as described above, it is possible to carry out recording without waiting for the next phase pulse PG.

REFERENCES:
patent: 4599657 (1986-05-01), Kinoshita et al.
patent: 4647976 (1987-03-01), Nakagaki et al.
patent: 4675747 (1987-06-01), Hanma et al.
patent: 4901154 (1990-02-01), Suga et al.

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