Dynamic magnetic information storage or retrieval – Miscellaneous
Patent
1981-01-09
1983-10-18
Kilgore, Robert M.
Dynamic magnetic information storage or retrieval
Miscellaneous
360 721, 360 723, 369 27, G11B 1700, G11B 1518, G11B 1902, G11B 2112
Patent
active
044109237
ABSTRACT:
Display apparatus is provided for a recording and/or playback device of the type having a movable record medium upon which cue signals may be recorded to indicate an end of "letter", an "instruction" or the like. A linear array of light indicating elements is selectively energized to provide a cursor indication of the present position of the record medium as it is moved relative to a reference position. Selected ones of these elements also are energized in response to the recording or playback of a cue signal to indicate the relative locations of the cue signals on the record medium. In one embodiment, a numerical display also is provided to indicate a time-related quantity of record medium which has been transported during a recording or playback operation. If the record medium is, for example, a magnetic tape transported from a supply reel to a take-up reel, motion pulses are generated as the tape is transported. Although the frequency of such motion pulses changes as the quantity of tape remaining on the supply reel changes, such pulses are counted in a "linearized" manner such that the numerical display is a linear representation of time that has been either consumed or that remains available for further use. In a preferred embodiment, prior to carrying out a transcribe operation, the recording medium is scanned to ascertain the presence of cue signals thereon; and appropriate ones of the light indicating elements are energized such that, at the completion of the scanning operation, the relative locations of the previously recorded cue signals are displayed. Preferably, during a transcribe operation, the numerical display indicates the quantity of time remaining between the cursor position and the immediately-following cue signal location.
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"Popular Electronics", Oct. 1975, pp. 69-70.
Dictaphone Corporation
Kilgore Robert M.
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