Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording
Patent
1986-11-12
1989-01-31
Faber, Alan
Dynamic magnetic information storage or retrieval
Monitoring or testing the progress of recording
360 361, 358339, 358337, 358320, H04M 595
Patent
active
048020257
ABSTRACT:
A video signal circuit performing the function of time base correction has a pair of memories each adapted to store at least one field of video data and a pair of shift registers associated with both memories. The memories are set to the read state and write state alternately. A shift register associated with a memory in its write state receives one unit of video signal data in series in response to a first sync signal to write these data in the associated memory during a portion of the horizontal blanking period specified by the first sync signal. The other shift register associated with the memory in its read state reads another unit of video signal data from the associated memory during a portion of the horizontal blanking period specified by a second sync signal to sequentially produce the read data in synchronism with the second sync signal.
REFERENCES:
patent: 3919716 (1975-11-01), Yumde
patent: 3971063 (1976-07-01), Micheal
patent: 4018990 (1977-04-01), Long
patent: 4138694 (1979-02-01), Doi
patent: 4614979 (1986-09-01), Sugiyama
patent: 4649511 (1987-03-01), Gdula
Faber Alan
Fuji Photo Film Co. , Ltd.
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