Abstract
The IP surveillance market is growing significantly and is receiving global attention now. IP camera is the heart of this new surveillance system. As the key component of IP camera, video capture port contributes greatly to camera's cost. CCD image sensors are employed in most IP camera for its excellent performance and maturity in the market. In fact, new types of CMOS image sensors have become possible recent years due to CMOS technology improvements. This paper presents a design of an IP camera's video capture port using CMOS image sensor based on embedded environment. Also contained is a brief introduction to the hardware design including the interface and PCB layout. The paper also provides information on setup of important registers, functions usage and debug tips. The design was tested on an IP camera which has been on market for three years. The results show that using CMOS image sensor can achieve good image and save cost. Therefore, it is well suited for the surveillance field where image resolution is not the focus. The method can easily be extended to any other IP camera design with little change both in hardware and software.
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