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:
Mar. 09, 1976
Filed:
Jun. 26, 1975
James C Stoddard, Wayland, MA (US);
GTE Laboratories Incorporated, Waltham, MA (US);
Abstract
A TV channel selector assembly includes a keyboard having ten keys corresponding to the decimal numbers zero through nine, inclusive. The desired channel may be selected merely by activating the appropriately numbered keys, there being no other keys required to be activated to effect a channel change. After activation of the first key, which may be either a units digit channel or the tens digit of a two digit channel, a delay circuit defines a timed interval of about two seconds. Each keyboard output is encoded into a four digital word. A control device transfers the first digital word to a units channel input if a second key is not activated during the timed interval. If a second key is activated during the timed interval, the first digital word is transferred to a tens channel output, and the second digital word is transferred to the units channel output.