Apparatus including a head wheel carrying advanced read, write a

Details Apparatus including a head wheel carrying advanced read, write a Apparatus including a head wheel carrying advanced read, write a

1988-12-19

1990-07-03

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Record editing

360 191, 360 331, 358343, 358335, G11B 2702, H04N 5782

Patent

active

049396056

ABSTRACT:
The head wheel of a video recorder-reproducer is equipped with a set of four advanced read heads, in addition to the usual sets of four read and write heads, so that each advanced read head can read the contents of an oblique track on a magnetic tape on which one of the write heads will be able to record thereafter and which will be read still later by one of the normal read heads. The advanced read heads are so located that while one of them is reading a track, one of the normal read heads is out of contact with the tape. The advanced read heads are used for reading out audio sections of video tape tracks for processing and rerecording in accordance with a previously known processing procedure used in editing newly recorded video tapes for better audio recording. The normal read heads are available for an after-check of the rerecorded audio. A switching system timed by the rotation of the head wheel disconnects each of the normal read heads in a sequence during the periods in which they are respectively out of contact with the tape and at the same time the switches in one of the advanced read heads for scanning the mid-portion of the recorded tracks where the audio sections of the recording are located.

REFERENCES:
patent: 4197427 (1980-04-01), Hutcheson
patent: 4415938 (1983-11-01), Heitmann
patent: 4513315 (1985-04-01), Dekker et al.
patent: 4597020 (1986-06-01), Wilkinson
patent: 4723176 (1988-02-01), Ive
patent: 4821132 (1989-04-01), Hasegawa
"Standard for Recording Digital Television Signals on Magnetic Tape in Cassettes", EBU, Tech. 3252-E, Sep. 1986.
Fernseh- und Kino-Technik, 1987, pp. 15-22.

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