Automatic switching apparatus and method

Details Automatic switching apparatus and method Automatic switching apparatus and method

1984-11-05

1986-08-05

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

360 71, G11B 1500

Patent

active

046046615

ABSTRACT:
An apparatus and method wherein a switching means, which has the capability of generating one of a number of different output selection signals, is set to an automatic mode or a non-automatic mode. In the automatic mode, the switching means automatically switches from generating one selection signal to another selection signal in response to a predetermined input which includes a control pulse. In the non-automatic mode, no such switching occurs. In addition, the apparatus generates a pseudo-control signal which, in the non-automatic mode only, changes in a predetermined manner in response to the control pulse so as to simulate the control pulse. According to a preferred embodiment, the above functions are performed by a switchover circuit which is employed in a multi-tape well logging system to automatically switch from one tape to another tape upon reaching an end of tape.

REFERENCES:
patent: 3747060 (1973-07-01), DeShazo, Jr.
patent: 3885090 (1975-05-01), Rosenbaum
patent: 4037259 (1977-07-01), Hammon et al.
patent: 4188664 (1980-02-01), DeShon
patent: 4398272 (1983-08-01), Sibert
patent: 4422111 (1983-12-01), Moeller et al.

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