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:
Apr. 13, 2004
Filed:
Jul. 12, 2002
Renesas Technology Corp., Tokyo, JP;
Abstract
A semiconductor device includes a delay amount measuring unit, multiple delay sections and a correction signal generating unit. The delay amount measuring unit for measures an actual delay amount corresponding to a specified delay amount by supplying a clock signal with a known period to multiple 1-ns-delay strings with a preassigned delay amount, and by detecting phase variations of the clock signal by the 1-ns-delay strings. The delay sections includes a delay string capable of freely adjusting a connection number of its delay elements. The correction signal generating unit generates a correction signal for enabling each of the delay sections to correct the connection number of the delay strings such that each delay section has a desired delay amount, in accordance with the actual delay amount corresponding to the specified delay amount and measured by the delay measuring unit.