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. 23, 1981
Filed:
Mar. 20, 1980
Sony Corporation, Tokyo, JP;
Abstract
A television receiver is disclosed in which there are provided a television signal receiving circuit including RF and IF stages; a video detector connected to the television signal receiving circuits; an AGC circuit connected between the video detector and television signal receiving circuit for automatically controlling the gain of the latter, the AGC circuit having a predetermined time constant; and a ghost detector connected to the video detector for detecting a ghost signal during a certain period in a vertical blanking period of the video signal from the video detector. In this case, a switching device is provided for switching the AGC circuit at least during the certain period in the vertical blanking period such that the detected ghost level is not substantially influenced by the transient level change of the AGC circuit.