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. 27, 1995
Filed:
Jan. 29, 1993
Michael D Landis, Fishers, IN (US);
Joseph W Forler, Indianapolis, IN (US);
Paul D Henry, Carmel, IN (US);
Thomson Consumer Electronics, Inc., Indianapolis, IN (US);
Abstract
In a television system including closed caption circuitry for receiving and decoding closed caption data, a controller continually monitors the closed caption circuitry for an indication of the presence of any of a plurality of predetermined valid closed caption data codes. Every time any of the predetermined valid closed caption data codes is detected, a timer is reset to begin timing a predetermined time interval, and an on-screen display indicating that closed caption data are available is enabled. If a subsequent one of the predetermined valid closed caption data codes is not detected before the expiration of the time interval, then the on-screen display indicating that closed caption data are available is disabled. In another embodiment of the invention, a lamp is illuminated to indicate the availability of useful closed-caption data.