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. 07, 2009
Filed:
Sep. 06, 2007
Tomoaki Maeda, Kyoto, JP;
Hisashi Adachi, Osaka, JP;
Taiji Akizuki, Miyagi, JP;
Panasonic Corporation, Osaka, JP;
Abstract
To provide a method of controlling a delta-sigma modulator and a delta-sigma modulator capable of suppressing a consumption power and also improving a signal-to-noise ratio by implementing both the zero-point shifting technology and the double sampling technology simultaneously, a delta-sigma modulator includes a first integrator (), a second integrator (), a third integrator (), a local feedback (), delay units (), a quantizer (), a DA converter (), gains (to) of the DA converter, gains (to) of the integrators, adders (), no-delay integrators () each having a gain '1', a gain () of the local feedback, a DAC () of a gain '1', a delay unit () for delaying output signals of the DA converter (), and a delay unit () for delaying an output signal of the local feedback ().