Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Patent
1982-05-21
1985-10-01
Psitos, Aristotelis M.
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
369 43, 360 78, 179 604, 364200, 364900, G11B 1722, G11B 700, G11B 2108, H04M 1100
Patent
active
045450439
ABSTRACT:
A telephone switching network is disclosed having an announcement system coupled to a toll switching center.
A plurality of short phrases are recorded in corresponding sectors of a disc store and announcements are assembled in real time by concatenating the appropriate phrases. Initial requests for announcements are sorted so that the reading heads seek across the disc in a straight line in a first direction to play back the recorded phrases. Any additional requests for playback received while the initial requests are being played back, are sorted in the opposite order for playback while the heads are driven in a second direction to their original position. All further requests are combined with any unfinished work for playback as the heads once again move in the first direction.
The method of playing back while traversing the disc in both directions shortens the waiting interval for the listeners.
REFERENCES:
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Anderson Thomas W.
Milczarek Richard J.
Peters Carl H.
AT&T Bell Laboratories
Davis Charles H.
Godlewski Richard J.
Psitos Aristotelis M.
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