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:
Jan. 31, 2012
Filed:
Mar. 14, 2008
Kazuya Takita, Kitakyushu, JP;
Seiji Takamatsu, Kitakyushu, JP;
Kazuya Takita, Kitakyushu, JP;
Seiji Takamatsu, Kitakyushu, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The invention provides a television-connection-state detecting device that includes: a resistor element that outputs an analog video signal that is to be displayed on a television receiver; a reference voltage generation circuit that generates reference voltages for comparing a voltage signal level at the television-connection-terminal side end of the resistor element and a voltage signal level at the opposite-side end of the resistor element; a first clamping circuit that clamps a voltage signal level at the television-connection-terminal side end of the resistor element at the first reference voltage; a second clamping circuit that clamps a voltage signal level at the opposite-side end of the resistor element at the second reference voltage; a comparison circuit; and a judging unit that judges whether an analog video signal input device is connected to the television connection terminal or not on the basis of a voltage signal level outputted from the comparison circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile