Velocity error compensator for time base error corrections of pe

Details Velocity error compensator for time base error corrections of pe Velocity error compensator for time base error corrections of pe

1981-03-16

1983-07-12

Psitos, Aristotelis M.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 19, 360 26, 360 361, H04N 944, H04N 946, G11B 543, H04N 578

Patent

active

043934137

ABSTRACT:
A velocity error compensator adapted for use in a time base corrector of the type which includes a main memory into which individual periods, such as horizontal line intervals, of information signals, such as video signals, are written at a write-in rate synchronized with the information signals, and from which the individual periods of information signals are read out at a reference read-out rate. The velocity error compensator includes a storage device for storing velocity error signals associated with corresponding ones of the periods of information signals. The velocity error signal associated with the period of information signals then read out from the main memory, and also the velocity error signals associated with the preceding and next-following periods of information signals are simultaneously read out from the storage device. These three velocity error signals are combined to produce a velocity error correction signal which is used to modulate the information signal read-out rate.

REFERENCES:
patent: 3994013 (1976-11-01), Lemoine et al.
patent: 4053926 (1977-10-01), Lemoine et al.
patent: 4165524 (1979-08-01), Ninomiya
patent: 4321619 (1982-03-01), Kamath

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