A Novel Segment-Based Data Transfer Scheme for Low-Power CMOS Surveillance Image Sensors

摘要

Smart image sensors with low data rate output are well fitted for security and surveillance tasks, since at lower data rates, power consumption is reduced and the image sensor can be operated with limited energy resources such as solar panels. In this paper, a new data transfer scheme is presented to reduce the data rate of the pixels which have undergone value change. Although different pixel difference detecting architectures have been previously reported but it is shown that the given method is more effective in terms of power dissipation and data transfer rate reduction. The proposed architecture is evaluated as a 100 x 160-pixel sensor in a standard CMOS technology and comparison with other data transfer approaches is performed in the same process and configuration.