Automatic backspace device for a tape recorder

Details Automatic backspace device for a tape recorder Automatic backspace device for a tape recorder

1982-11-22

1986-03-04

McElheny, Jr., Donald

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

G11B 1548

Patent

active

045743215

ABSTRACT:
The disclosed automatic backspace device, in a tape recorder or transcriber or the like, is rewound for a specific period of time. A transistor is turned on by an electrical current from a time constant circuit in response to tape reproduction seen by an operating switch. The transistor charges a capacitor which discharges a constant electrical current through a parallel-connected transistor in a current mirror circuit whose other transistor is supplied with a predetermined electrical current. Another transistor is turned on by the discharge current of the capacitor to carry out the rewinding of the magnetic tape.

REFERENCES:
patent: 3567229 (1968-01-01), Ridings et al.
patent: 3632893 (1972-01-01), Bolick et al.
patent: 3660616 (1972-02-01), Davidge et al.
patent: 4075435 (1978-02-01), Eppler
patent: 4321633 (1982-03-01), Saito
patent: 4338532 (1982-07-01), Houghton
patent: 4366514 (1982-12-01), Sato et al.
patent: 4370684 (1983-01-01), Kanayama et al.
patent: 4415249 (1983-11-01), Tsuzuki et al.
patent: 4417135 (1983-11-01), Motoyama et al.

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