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:
Feb. 24, 1987
Filed:
May. 11, 1983
William H Carson, Oaklandon, IN (US);
Carson Manufacturing Co., Indianapolis, IN (US);
Abstract
The invention is a control apparatus for use in an electronic siren circuit which generates a plurality of siren and intelligible audio outputs. The control apparatus includes a control module of relatively small size which may be mounted in a limited space proximate to an operator and a relatively larger, receiver module which may be mounted in any convenient location in a vehicle. The control module and remote receiver module are coupled together by a transmission line. Circuitry is provided in the control module and receiver module for producing binary coded control signals and for decoding these signals respectively to produce control signals in the receiver module. Circuitry is also provided for multiplexing intelligible audio signals over the same transmission line and for discriminating between the binary coded control signals and intelligible audio signals and conditioning the power module to reproduce same using the high power amplifier circuit of the siren. Biasing control circuits are provided in both the control and receiver modules for altering the operating states of the apparatus.