公开(公告)号：US20130249800A1

公开(公告)日：2013-09-26

申请号：US13894614

申请日：2013-05-15

Applicant: PIXART IMAGING INC.

Inventor： Ching Lin CHUNG ,  Yen-Min CHANG

IPC: G06F3/033

CPC classification number: G06F3/033 ,  G06F1/3206 ,  G06F1/3259 ,  G06F3/03543 ,  G06F3/038 ,  G06K9/2027 ,  G06K2009/3291 ,  Y02D10/155

Abstract: A power saving method for a motion estimation device includes: calculating a first differential image at a first time; calculating a second differential image at a second time; comparing the first differential image and the second differential image to obtain a displacement between the first differential image and the second differential image; comparing the displacement with at least one threshold value; and adjusting an emitting cycle of a light source according to a comparison result of comparing the displacement and the threshold value and maintaining a sampling period of the motion estimation device unchanged when adjusting the emitting cycle of the light source. The present invention further provides a motion estimation device.

Abstract translation: 一种用于运动估计装置的省电方法包括：在第一时间计算第一差分图像; 在第二时间计算第二差分图像; 比较第一差分图像和第二差分图像以获得第一差分图像和第二差分图像之间的位移; 将所述位移与至少一个阈值进行比较; 以及根据比较所述位移和所述阈值的比较结果调整光源的发光周期，并且当调节所述光源的发光周期时，维持所述运动估计装置的采样周期不变。 本发明还提供一种运动估计装置。