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. 03, 1995
Filed:
Nov. 19, 1993
Applicant:
Inventors:
Guoliang Shou, Tokyo, JP;
Weikang Yang, Tokyo, JP;
Sunao Takatori, Tokyo, JP;
Makoto Yamamoto, Tokyo, JP;
Assignee:
Yozan Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341152 ; 341150 ;
Abstract
The D/A converter comprises: a digital counter receiving a reference clock pluses and a reference voltage as a start signal so as to output a stop signal when the digital counter counts the reference clock pulses until a predetermined number; and a number is reached, and an RC circuit having a resister and a capacitor receiving the reference voltage so as to be charged by a predetermined time constant until the stop signal is inputted to the RC circuit, whereby the RC circuit is charged up to a voltage corresponding to a time distance between the start signal and the stop signal.