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:
Nov. 04, 2003
Filed:
Oct. 10, 2002
Masato Takeyabu, Hokkaido, JP;
Yuji Kobayashi, Hokkaido, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The present invention relates to an analog/digital converter including an analog conversion unit including a plurality of stages having a pipelined configuration and a digital conversion unit. The digital conversion unit has digital-value storage registers, which are each provided for one of the stages. Each of the register is used for storing a digital value completing error correction for each segment, and adapted to output the digital value that corresponds to a segment number. The digital conversion unit also has an error-computation control unit, which controls the stages so that a specific one of the stages, inputs an error computation analog signal. The error-computation control unit then computes an error of the specific stage on the basis of digital-converted data computed from the digital values corresponding to segment numbers received from all the stages following the specific stage.