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. 18, 2011
Filed:
Jan. 29, 2010
Jan Bogaerts, Sint Katelijne Waver, BE;
Jan Bogaerts, Sint Katelijne Waver, BE;
Cmosis NV, Antwerp, BE;
Abstract
An analog-to-digital converter generates an output digital value equivalent to the difference between two analog signals. The converter forms part of a set of converters. The converter receives a first analog signal and a second analog signal (V, V) and a ramp signal (V). A clock is dedicated to the converter, or a sub-set of converters. A control stage enables a first counter based on a comparison of the ramp signal with the first analog signal and the second analog signal. The converter can be calibrated by at least one reference signal (V, V) which is common to the set of converters. A-to-D conversion can include a first A-to-D conversion stage which determines a signal range, selected from a plurality of signal ranges, and a second A-to-D conversion stage which determines an M-bit digital value equivalent to the difference between the first and second analog signals by comparing the signals with a ramp signal, with the ramp signal having the signal range determined by the first analog-to-digital conversion stage.