The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 1985
Filed:
May. 21, 1982
Thomas W Anderson, Warrenville, IL (US);
Richard J Milczarek, Warrenville, IL (US);
Carl H Peters, Lisle, IL (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
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.