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. 08, 1991
Filed:
May. 22, 1990
David E Littlefield, Garland, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A communication receiver (12) is provided having a radio frequency section (20) for receiving a communication signal (14) and a corresponding code signal (16) carrying an identification code. An intermediate frequency section (26) is coupled to radio frequency section (20) to convert the frequency of said communication signal. A decoder (42) having a memory for storing a security code, is coupled to radio frequency section (20) and intermediate frequency section (26). Decoder (20) is operable to compare the identification code and the security code and selectively disable the intermediate frequency section in response.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile