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:
Jun. 27, 1995
Filed:
Nov. 10, 1992
Mark Davis, Carlsbad, CA (US);
World Communication Ventures, Inc., Casper, WY (US);
Abstract
A wide band, wide area FM-SCA radio system has a central station that transmits multiple audio signals and digital data signals through a satellite network to FM stations participating in the system. Each FM station demodulated and time multiplexes the audio and digital signals with a control signal to form a first baseband waveform having a frequency range corresponding to the SCA frequency bandwidth. The first baseband waveform and a regular FM baseband waveform are combined into a composite band waveform that is single-sideband modulated onto the station carrier for retransmission to FM-SCA receivers in the coverage area. Each FM-SCA receiver demodulates the received signal and separately processes the regular FM signal, the FM-SCA audio signals, and the FM-SCA digital data signals. A user interface is provided for audio output selection.