Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of biasing or erasing
Patent
1987-08-07
1989-03-28
LaRoche, Eugene R.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of biasing or erasing
360 7813, 360 7814, G11B 503
Patent
active
048169358
ABSTRACT:
A system for automatically erasing a pair of tracks whenever a designated track to be erased belongs to a pair of tracks representing a frame picture.
In the system, detecting means detects ID codes indicating field/frame recording mode of a recorded track and feeds a detected signal to a controller, then the controller takes an appropriate action to erase the pair of frame recorded tracks by timely activating head accessing means and an erasing signal generator based on the ID codes, whenever the tracks correspond to a frame picture.
REFERENCES:
patent: 3882541 (1975-05-01), Ghose et al.
patent: 4131923 (1978-12-01), Wachs et al.
patent: 4315289 (1982-02-01), Holecek et al.
patent: 4383283 (1983-05-01), Machut
patent: 4442463 (1984-04-01), Krishnamurty et al.
patent: 4651247 (1987-03-01), Fuke
Nikkei Electronics, Jul. 2, 1984, pp. 80-85; published by Nikkei McGraw-Hill. Title: Recording 25 Still Pictures on a Floppy Disc of 47 mm in Diameter-Standard of Magnetic Disks for Electronic Still Cameras.
Kawase Dai
Toizumi Yasushi
LaRoche Eugene R.
Mis David
Olympus Optical Co,. Ltd.
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