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:
Jun. 27, 2006
Filed:
Oct. 27, 2003
Masaru Sekiguchi, Tokyo, JP;
Masaru Sekiguchi, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
The current cell matrix includes 63 upper current cells and one lower current cell. Each of the current cells has 4 constant current transistors having the same size with respect to each other. The upper current cell outputs drain currents of all the constant current transistors when the cell is selected by the upper decoder. The lower current cell outputs drain currents of none, one or two constant current transistors in accordance with the select signal from the lower decoder. The analog output terminal combines and outputs the currents of the selected constant current cells. The current cell type digital-to-analog converter has the decreased differential linearity error and the decreased integral linearity error.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile