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. 19, 1999
Filed:
Aug. 11, 1997
Osamu Itoku, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
The present invention is a digital-to-analog converter comprising: a core digital-to-analog converter which converts digital signal of first number of bits to analog signal, a generator of an addend whose duty corresponds to the digital signal of second number of bits, an adder which adds the addend as least significant bit to the digital signal of first number of bits and supplies its output to the core digital-to-analog converter, and a filter which is supplied with its input from the core digital-to-analog converter and eliminates the ripples of the input to provide a ripple-eliminated analog signal at its output terminal, whereby the digital-to-analog converter can converts a digital signal of number of bits which exceed the first number, more exactly is the sum of the first number and the second number, to an analog signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile