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. 03, 2009
Filed:
Jun. 06, 2006
Yasuzumi Hirao, Kawasaki, JP;
Masaru Numano, Kawaguchi, JP;
Yasuzumi Hirao, Kawasaki, JP;
Masaru Numano, Kawaguchi, JP;
Kabushik Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor integrated circuit includes: a power supply circuit; a voltage-current conversion circuit connected with an output of the power supply circuit, the voltage-current conversion circuit having an output terminal; a current-voltage conversion circuit connected with the output terminal of the voltage-current conversion circuit, the current-voltage conversion circuit having an output terminal; a constant-voltage line connected with the output terminal of the current-voltage conversion circuit; an output circuit which has an output terminal to which an external element is connected at a rear stage thereof; and a protection circuit which receives a potential of the constant-voltage line and the output signal from the power supply circuit to control a potential of the output terminal, and prevents the external element from operating when an increase in the potential of the constant-voltage line is insufficient or the power supply voltage is not in a steady state.