Tape counter for a rotary head type video signal recording and r

Details Tape counter for a rotary head type video signal recording and r Tape counter for a rotary head type video signal recording and r

1990-11-29

1992-08-11

McElheny, Jr., Donald

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

H04N 593

Patent

active

051385023

ABSTRACT:
A tape counter for counting an amount of tape by which a tape has run for a video signal recording and reproducing apparatus and method therefor, in which the number of frames on tape tracks over which each rotary head scans are counted according to a change in level of an envelope of a reproduced FM signal detected through each rotary head, the number of rotations of a rotary drum on which the rotary head is mounted is counted, and the amount of tape by which the tape has run is counted on the basis of the number of frames scanned by the rotary head and the number of rotations of the drum. The tape counter detects the amount of tape by which the tape has run in all running modes during a reproduction operation with a high accuracy and displays the amount of tape by which the tape has run in a series of units of hours, minutes, and seconds.

REFERENCES:
patent: 4398279 (1983-08-01), Titus, IV et al.
patent: 4463390 (1984-07-01), Koga et al.
patent: 4471391 (1984-09-01), Reagan
patent: 4485337 (1984-11-01), Sandusky
patent: 4520406 (1985-05-01), Suzuki et al.
patent: 4630137 (1986-12-01), Sekiguchi
patent: 4713715 (1987-12-01), Abe
patent: 4717969 (1988-01-01), Miyake
patent: 4811130 (1989-03-01), Takayama

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