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:
Jul. 21, 2009
Filed:
Nov. 07, 2007
Shigemitsu Murayama, Nagasaki, JP;
Kohei Kudo, Nagasaki, JP;
Yasuhide Shimizu, Nagasaki, JP;
Sony Corporation, Tokyo, JP;
Abstract
A subranging analog-to-digital converter is disclosed. The converter includes: a divided voltage generation circuit that equally divides a range of a predetermined voltage, and generates 2+1 divided voltages; a higher-order conversion circuit that generates a signal for higher-order m bits of the digital signal by comparing the analog signal with the 2−1 or less of the 2+1 divided voltages; a switch circuit that selects at least two of the 2+1 divided voltages based on information provided by the higher-order conversion circuit; a lower-order conversion circuit that generates a signal for lower-order n bits (n=N−m) of the digital signal by comparing the analog signal with the divided voltages being a selection result of the switch circuit; and an encoder that generates the digital signal based on the signal provided by the higher-order conversion circuit and the signal provided by the lower-order conversion circuit.