Cassette loading and ejection control system for magnetic tape c

Details Cassette loading and ejection control system for magnetic tape c Cassette loading and ejection control system for magnetic tape c

1991-06-18

1993-07-20

Zazworsky, John

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Tape record

360 69, 360 71, 360 93, G11B 1524

Patent

active

052298981

ABSTRACT:
A control system for a magnetic tape cassette apparatus of the type requiring no movement of a transducer for the establishment of data transfer contact with the tape cassette. Inserted lengthwise in the apparatus, the tape cassette has its apertured front side oriented toward the fixed transducer. A cassette shift mechanism subsequently moves the tape cassette in its own plane into data transfer contact with the transducer. Then a pair of tape transport spindles are moved into driving engagement with the tape cassette by a tape transport shift mechanism. Both cassette shift mechanism and tape transport shift mechanism are actuated by a motor driven dual control cam under the control of a digital microprocessor controller. The controller has inputs connected to a cam position sensor which detects predetermined angular positions of the dual control cam, a cassette loading sensor which indicates whether the cassette is in the data transfer position, and a tape transport sensor which indicates whether the drive spindles are in or out of driving engagement with the cassette. Relying on digital outputs from these sensors, the controller determines the loading of the cassette in the data transfer position and the ejection of the cassette from the apparatus.

REFERENCES:
patent: 4219852 (1980-08-01), Magata et al.
patent: 4611256 (1986-09-01), Tsujimura
patent: 4701817 (1987-10-01), Uemura
patent: 4748526 (1988-05-01), Miyao et al.
patent: 4831660 (1989-05-01), Koga et al.
patent: 5032940 (1991-07-01), Watanabe et al.

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