Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1975-04-30
1977-01-04
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record medium
In container
116133, 242199, 360 94, G11B 2304, G09F 900
Patent
active
040018911
ABSTRACT:
A device for directly indicating the programs being reproduced from a particular track of a magnetic tape located within a tape cartridge. The tape cartridge includes an opening in the front of the cartridge with a four-sided program indicator shaft adjacent to the opening and containing indicia indicative of the particular programs being played on a particular track. A drive shaft along one side of the cartridge engages the program indicator shaft, with the drive shaft in turn being engaged through an aperture in the cartridge by a push shaft mounted within a magnetic tape reproduction apparatus. The push shaft is actuated by an appropriate solenoid means in electrical parallel with program indicator lights in the magnetic tape reproduction apparatus such that a change of channel being reproduced from the magnetic tape will cause extension of the push shaft and consequential rotation of the program indicator shaft to a new position indicating the programs currently being reproduced.
REFERENCES:
patent: 3532347 (1970-10-01), Parsons
patent: 3552751 (1971-01-01), Kelso
patent: 3623450 (1971-11-01), Siller
patent: 3632896 (1972-01-01), Ban
patent: 3656761 (1972-04-01), Laschenski
patent: 3705699 (1972-12-01), Siller
IBM Technical Bulletin, Tape Cartridge, R. B. Johnson et al., vol. 9, No. 6, Nov. 1966, p. 576.
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