Compression and expansion circuitry for a recording and playback

Details Compression and expansion circuitry for a recording and playback Compression and expansion circuitry for a recording and playback

1978-08-16

1980-09-23

Cardillo, Jr., Raymond F.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358132, 360 9, 365215, 365221, G11B 700, H04N 586, G11C 700

Patent

active

042244811

ABSTRACT:
Recording and playback optical scanners are relatively movable with respect to each other and with respect to a movable recording medium such as reel of tape adapted for recording variations in applied light. The playback scanner reproduces recorded information at a time delayed with respect to the time of recording, wherein the amount of delay can vary within wide limits. When the playback scanner is moved relative to recording scanner, the playback rate will be faster or slower than the recording rate.

REFERENCES:
patent: 3504352 (1970-03-01), Stromswold et al.
patent: 3763328 (1973-10-01), Lester et al.
patent: 3809805 (1974-05-01), Kasprzak
patent: 3860760 (1975-01-01), Rittenbach
patent: 3961165 (1976-06-01), Fukuoka
patent: 3975763 (1976-08-01), Kitamura
patent: 3992699 (1976-11-01), Krumbach
patent: 4054921 (1977-10-01), Tatami
patent: 4151609 (1979-04-01), Moss
Skov et al., Buffer System, IBM Tech. Disc. Bulletin, vol. 2, No. 5, 2/60, pp. 86-89.

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