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:
May. 23, 2006
Filed:
Jan. 19, 2005
Kazumasa Ando, Chiba-ken, JP;
Kazumasa Ando, Chiba-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An A/D converteris provided with analog input terminals, input terminal selection circuit, preset registers, preset data registers, preset data selection circuit, and sampling capacitor C. Input terminal selection circuitselects one of analog input terminals. Preset registersare correspondingly provided for analog input terminals. Preset data selection circuitselects preset digital data which preset data registersstores. Preset data stored at preset registerscorresponding to input terminalsdesignated by input terminal selection circuitare converted into analog signals as pre-charge voltages. One of the preset data is selected for each analog input terminalin response to kinds of the input voltages. It is supplied to sampling capacitor C as a pre-charge voltage for a sampling duration of a sampling period for the A/D conversion.