Time base corrector

Details Time base corrector Time base corrector

1985-09-06

1987-11-24

McElheny, Jr., Donald

Facsimile and static presentation processing

Facsimile

Recording apparatus

H04N 989

Patent

active

047092769

ABSTRACT:
Whenever component signals (color difference signals) of a video tape recorder signal are recorded in a recording medium in accordance with timeplex (time division multiplex) method, velocity error inevitably occurs because there always exists a difference in relative velocity between a tape head and tape between recording process and reproducing process. To eliminate the velocity errors included in the component signals when reading out the signals, a first read clock signal is generated to read a first component signal recorded in the first half of each horizontal period segment under consideration of integral velocity error as in the conventional method, and a second read clock signal is generated to read a second component signal recorded in the second half of each horizontal period segment under consideration of both initial offset velocity error and integral velocity error.

REFERENCES:
patent: 3994013 (1976-11-01), Lemoine et al.
patent: 4352121 (1982-09-01), Lilley
patent: 4445092 (1984-04-01), Yoshinaka et al.

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