Image storage and retrieval apparatus

Details Image storage and retrieval apparatus Image storage and retrieval apparatus

1987-06-30

1989-04-18

Hix, L. T.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358335, 358342, 360351, H04N 979

Patent

active

048231967

ABSTRACT:
There is disclosed a still image storage and retrieval apparatus that is capable of storing and retrieving a large number of images from a magnetic disk storage medium. The apparatus uses a color under recording format, and the disk speed is synchronized to the video sync signal. The recording and playback signals are time base compensated to offset the effects of jitter in the disk speed by using reference frequencies from the disk drive to down-convert and up-convert the color signal. In another embodiment a reference signal from the disk is used to modulate the color signals. In another embodiment a digital "walk along" memory stores time base error information during recording for time base error correction during playback. A one image memory is also provided to allow for transition between images during playback.

REFERENCES:
patent: 4353089 (1982-10-01), Winslow et al.
patent: 4553175 (1985-11-01), Baumeister
patent: 4555735 (1985-11-01), Usuki et al.
patent: 4577240 (1986-03-01), Hedberg et al.
patent: 4591930 (1986-05-01), Baumeister
patent: 4616263 (1986-10-01), Eichelberger
patent: 4652939 (1987-03-01), Baumeister

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