Tape recorder utilizing an integrated circuit

Details Tape recorder utilizing an integrated circuit Tape recorder utilizing an integrated circuit

1981-12-31

1983-12-27

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

G11B 502

Patent

active

044234422

ABSTRACT:
A tape recorder is described which is substantially fully integrated and which performs the required functions of a tape recorder in either the recording or playback mode. The tape recorder is readily converted from the record to the play mode of operation by simple switching means which operate to control selected current sources on the integrated circuit to activate or inactivate the functional blocks of the integrated circuit involved in the selected mode of operation. By the use of a temperature compensated reference in the emitter path of a differentially connected transistor pair to stabilize the current in two current mirrors not simultaneously operated, one may stabilize current sources associated with either mirror. The arrangement thus permits a highly economical method of mode control while at the same time preserving high temperature stability in all of the controlled functional elements.

REFERENCES:
patent: 4342006 (1982-07-01), Ishigaki

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