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:
Dec. 26, 2000
Filed:
Sep. 25, 1998
Nobutaka Kitagawa, Kawasaki, JP;
Yoshikazu Nagashima, Funabashi, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
The analog-to-digital converting circuit apparatus of the invention is intended to realize both low voltage operation and high speed operation of an analog-to-digital converting circuit without impairing the precision characteristic. In plural boosting circuits, voltages higher than each supply voltage are generated. These plural boosting circuits are controlled as the control timing is sequentially shifted by the controller. The boosted voltages delivered from the plural boosting circuits are accumulated in the capacitor, and supplied into the analog-to-digital converter. In the analog-to-digital converter, at the timing other than the changeover timing of the converting action of the analog-to-digital converter, the plural boosting circuits are changed over sequentially, and the boosted voltages are converted from analog to digital values.