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. 24, 2007
Filed:
Nov. 10, 2005
Masahiro Yamakawa, Tokyo, JP;
Yoshiharu Umemura, Tokyo, JP;
Toshiaki Awaji, Tokyo, JP;
Satoshi Shiwa, Tokyo, JP;
Masahiro Yamakawa, Tokyo, JP;
Yoshiharu Umemura, Tokyo, JP;
Toshiaki Awaji, Tokyo, JP;
Satoshi Shiwa, Tokyo, JP;
Advantest Corporation, Tokyo, JP;
Abstract
A sampling circuit for compensating the phase difference of a sampling pulse due to a temperature variation to accurately sample input signals is provided. The sampling circuit samples received input signals. The sampling circuit includes a pulse generator for generating a pulse signal according to a timing at which an input signal should be sampled, a step recovery diode for outputting a sampling pulse responsive to the pulse signal, a detector for detecting the value for the input signal according to the sampling pulse, a temperature detecting circuit for detecting the temperature around the step recovery diode and a temperature compensating unit for controlling a timing at which the step recovery diode outputs the sampling pulse based on the temperature detected by the temperature detecting circuit.