Dynamic magnetic information storage or retrieval – Miscellaneous
Patent
1987-11-12
1989-08-15
Wolff, John H.
Dynamic magnetic information storage or retrieval
Miscellaneous
360 91, G11B 1500
Patent
active
048580511
ABSTRACT:
A recording and/or playback machine (1) for tape-shaped record carriers (20) is equipped, for indicating continuous recording times, with a counter (45) having an indicating element (46) which travels along the entire length indicating scale (26) of a predetermined total length for each of the possible continuous total-recording times and which can be driven via a speed change gear (71) mechanism switchable in steps, which can be switched to different speed ratios for driving the indicating element at speeds inversely proportional to the corresponding continuous total-recording times. The machine (1) is designed for receiving a cassette (4), in which the record carrier (20) is accommodated and which has at least one indicator (28,29) for indicating the continuous total-recording time obtainable by means of this record carrier, and in the machine (1) there if a sensing device (91) for sensing the indicator of a cassette inserted into the machine. The sensing device (91) automatically controls the switching of the speed change gear mechanism as a function of the sensed indicator (28,29).
REFERENCES:
patent: 3684298 (1972-08-01), Ban
patent: 4319290 (1982-03-01), Bolick, Jr. et al.
patent: 4785362 (1988-11-01), Nozawa et al.
Fischer Karl
Kock Werner
Tuider Wolfgang
Goodman Edward W.
U.S. Philips Corporation
Wolff John H.
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