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. 01, 2008
Filed:
Nov. 30, 2005
Fang Xu, Newton, MA (US);
Fang Xu, Newton, MA (US);
Teradyne, Inc., North Reading, MA (US);
Abstract
Systems and techniques for converting an analog input value to an output digital code are described. A system includes a first internal analog-to-digital converter (ADC) configured to receive the analog input value and to convert it to a first digital code; a first internal digital-to-analog converter (DAC) configured to convert the first digital code to a first analog value; a first linearization module configured to receive the first digital code and to produce a first linear-correction code that is approximately equal to the first analog value; a second internal ADC configured to convert a remainder portion of the analog input value to a second digital code; and an accumulator configured to combine the first linear-correction code and the second digital code to produce the output digital code.