VOLTAGE GENERATION CIRCUIT, DIGITAL/ANALOG CONVERTER, LAMP WAVE GENERATION CIRCUIT, ANALOG/DIGITAL CONVERTER, IMAGE SENSOR SYSTEM AND VOLTAGE GENERATION METHOD

摘要

PROBLEM TO BE SOLVED: To make the inclination of a voltage waveform to be generated larger than that of the prior arts by improving a resolution of the voltage waveform to be generated without increasing the numbers of resistors and switches in a resistor ladder type voltage generation circuit, and to prevent an analog/digital conversion period from being elongated even if the number of bits is increased.;SOLUTION: Among a plurality of switches connected to a resistor ladder circuit, (k) switches in continuous (k+1) switches are controlled to be turned on simultaneously, and the (k) switches are temporally changed over. Thus, voltage waveforms of different inclinations can be arbitrarily obtained from a voltage waveform of small inclination to a voltage waveform of large inclination. Furthermore, a voltage generation circuit is used as a lamp wave generation circuit to dynamically switch the inclination of a lamp wave, thereby implementing acceleration of an image sensor.;COPYRIGHT: (C)2011,JPO&INPIT