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:
Nov. 24, 1998
Filed:
Sep. 28, 1995
Thomas A Brown, Lynchburg, VA (US);
Robert Canada, Lynchburg, VA (US);
Ericsson Inc., Research Triangle Park, NC (US);
Abstract
In a wide band radio frequency (RF) simulcast communications system analog voice signals are distributed in a digitized form over high speed data channels and processed as high speed data. A conventional Ericsson, Inc. EDACS.TM. simulcast communications system is improved by altering the apparatus and manner by which 'clear voice' (unencrypted analog voice) is distributed from a control point and 'aligned' at multiple transmitter sites for simultaneous RF broadcasting. In the improved arrangement, the EDACS.TM. simulcast system inherent digital data stream alignment process produces the requisite time domain alignment for the digitized 'clear voice' signals without the need for costly analog audio alignment procedures and equipment.