Tape recorders

Details Tape recorders Tape recorders

1974-07-23

1976-12-14

Moffitt, James W.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

G11B 1504

Patent

active

039979164

ABSTRACT:
Apparatus for preventing the undesired erasure of a magnetic tape in a tape recorder which receives a tape cartridge and has the capability of recording in either direction of tape travel in the cartridge without the necessity of removing and reversing the cartridge. The apparatus includes means for detecting the presence of removable recording permission tabs on the tape cartridge and, depending on the instantaneously commanded direction of tape transfer, generating signals which will prevent recording if the tab corresponding to the track presented to the recording head during the existing direction of tape travel has been removed.

REFERENCES:
patent: 3677556 (1972-07-01), Oosone

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