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. 17, 1987
Filed:
Jul. 02, 1985
Joseph Cameron, Fort Thomas, KY (US);
P.T.I., Inc., Fort Thomas, KY (US);
Abstract
A communication switch circuit is provided by which quasi-duplex communication may be had between a telephone party and a mobile unit in a simplex two-way radio communication system. Specifically, the communication switch circuit includes (i) a keying circuit to selectively energize a transmitter and (ii) an interrupt circuit to intermittently, temporarily deenergize the transmitter to permit reception from a mobile unit. The communication switch circuit further includes a control circuit which prevents reenergizing of the transmitter if a signal is received from a mobile unit while the transmitter is temporarily deenergized thereby permitting a mobile unit to interrupt the telephone party and interject a comment. The communication switch circuit also includes control circuits which permit a mobile unit to initiate and terminate calls.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile