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:
Oct. 10, 2006
Filed:
Mar. 23, 2004
Masakatsu Nakai, Kanagawa, JP;
Masakatsu Nakai, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A semiconductor chip able to reduce wasteful power loss due to a margin of power supply voltage considering variation of characteristics. A voltage setting signal for setting the power supply voltage to be supplied to a target circuit is generated in a voltage controller in the semiconductor chip based on a delay time of a delay signal of a replica circuit with respect to a clock signal. The maximum value of power supply voltage set by the voltage setting signal is restricted to the maximum value of the power supply voltage determined based on variations in production of the semiconductor chip. Accordingly, even when the value of the power supply voltage set based on the delay signal exceeds the maximum value due to the margin set considering the variation of characteristics, the voltage setting of the voltage setting signal output to the external power supply is restricted to the maximum value, so wasteful power loss can be suppressed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile