Patent ID: 7038610
Filing Date: 2006-05-02
Classification: H03M

Abstract:
1. An integration type A/D converter, comprising: a first integration type A/D conversion section for providing an A/D conversion data, said A/D conversion section adapted to integrate a supplied signal to generate an integral output voltage, bringing said integral output voltage back to the initial level thereof by a predetermined magnitude per unit time, and measuring the time to restore said initial level, said A/D conversion section further adapted to provide said measured time as said A/D conversion data; a second integration type A/D conversion section for providing an A/D conversion data, said A/D conversion section adapted to integrate a supplied signal to generate an integral output voltage, bringing said integral output voltage back to the initial level thereof by a predetermined magnitude per unit time, and measuring the time to restore said initial level, said A/D conversion section further adapted to provide said measured time as said A/D conversion data; an input section receiving an input signal, adapted to alternately supply said input signal to said first integration type A/D conversion section and said second A/D conversion section during predetermined periods; an output section receiving from said first integration type A/D conversion section said first A/D conversion data for said input signal and receiving from said second integration type A/D conversion section said second A/D conversion data for said input signal, said output section adapted to output said first and second A/D conversion data; and a control section connected to said input section, said first integration type A/D conversion section, said second integration type A/D conversion section, and said output section, to control each of said sections, wherein said output section is adapted to add to said A/D conversion data additional information indicative of the contents of said data including positive/negative sign and conversion identification codes, and further adapted to output said added information together with said A/D conversion data in a predetermined format.