LOW POWER IMAGE SENSOR THAT ENABLES MOTION DETECTION AND METHOD FOR MOTION DETECTION USING THE IMAGE SENSOR

摘要

Motion detection is available low power image sensor of the invention, detects the pixel array from a kind of light of theme, has a pixel, outputs electrical signals to a matrix form; Column selector is used for select an electric signal from each pixel output of the pixel array by column; Analog voltage comparison unit is used to export one 1 bits digital datas compared with the reference electrical signal selected by the column selection unit voltage; One temporary storage cell is used to store the digital data of pitching-borer; Reference voltage controller is used to automatically adjust reference voltage to include the optimum range of quantity for " 1 " or include that " 0 " in the digital data of pitching-borer is set; The more interim previous frame of comparison unit of number and the present frame, are stored in a storage unit, and calculate " 1 " or include the quantity of " 0 " in comparison result data, they are compared with a preset reference value with judge to move whether theme; It includes: a; One image sensor is used to generate a flow control signal of selection control signal and data to control the function of sensor block. The configuration that can simplify image sensor according to the present invention can be miniaturized bothers with the low-power of image sensor. In addition, it can be controlled according to a reference voltage can carry out more precise movements judgements to environment. ;CMOS, image, detection