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. 25, 1985
Filed:
Nov. 07, 1983
Frank C Templin, Arlington Heights, IL (US);
Zenith Electronics Corporation, Glenview, IL (US);
Abstract
A microcomputer-controlled televison receiver tuning system requires only a limited memory capacity for the storage of a limited number of preferred channels. Memory size and microcomputer programming complexity are minimized by means of a stack memory which is programmed by keyboard entry of each of the preferred channel numbers followed by selection of an ENTER key after each entry. The preferred channel numbers may thus be sequentially loaded into the stack memory in any order and accessed in increasing and decreasing numerical order by selection of channel scan tuning keys, i.e., either tuning up or tuning down through the stack. If the ENTER key is not selected, the television receiver tunes to the selected channel number which is not loaded into the stack memory. In one embodiment, only the last six channels selected with the digit and ENTER keys are stored in the stack in a first-in/first-out order. Regardless of the order in which the preferred channel numbers are stored in memory, increasing or decreasing channels are accessed sequentially upon selection of either the channel up or channel down key.