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:
Jul. 31, 2007
Filed:
Dec. 02, 2004
Natsuki Kushiyama, Kawasaki, JP;
Yukihiro Urakawa, Kawasaki, JP;
Natsuki Kushiyama, Kawasaki, JP;
Yukihiro Urakawa, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor integrated circuit includes a first delay circuit generating a first delay clock; a second delay circuit generating a second delay clock; a first register registering a value of a first delay of the first delay clock; a second register registering a value of a second delay of the second delay clock; a clock supplying circuit supplying a clock signal to the first and second delay circuits; a phase comparator detecting a phase difference between the first and second delay clocks; and a built-in test circuit configured to control the first and second registers so that the value of the first delay can be registered in the first register and the value of the second delay can be registered in the second register.