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:
Apr. 24, 1979
Filed:
Sep. 06, 1977
Richard G Merrell, Darien, IL (US);
Zenith Radio Corporation, Glenview, IL (US);
Abstract
An electronic television tuning system includes a channel number selection integrated circuit chip interfaced with a channel computer integrated circuit chip by a plurality of data lines. The channel number selection chip, in response to the partial or complete entry of a channel number by the viewer, develops multiplexed digital codes on the data lines representing the channel number entry and, in certain circumstances, a predefined blanking code. A display apparatus, coupled to the data lines, provides an observable indication of the channel number entry, portions of the display being suitably blanked in response to the blanking code. Tuning information and raster blanking signals are developed by the channel computer chip directly from the information supplied on the data lines.