A structure of video surveillance platform has been set up based on TI's TMS320DM368 (the following referred to as DM368).The driver of CMOS image sensor has been designed ,according to the valid image data read and timing requirements in the CMOS image sensor. A Aptina's CMOS image sensor AR0130 has been adopted. Acooriding its clock configuration, the ranks’ timing control, the output resolution and other design requirements, a method based on the scanning of ranks clock to divide the valid image area has been applied to set parameters for achieving the hardware device driver. The results show that the device can be normal work under the drive, and video signal outputs stable.
Monolithic active pixel sensors (MAPS) are promoted to high performance on particle tracking in high energy physics experiment by using three-dimensional integrated technology (3DIT). During the development of MAPS architectures from 2D to 3D, the discriminators for digitizing the detected signal are moved from column level to pixel level. The programmable reference generator (PRG) providing the threshold voltage for the discriminators needs drive load capacitance varying from hundreds of picofarads to tens of nanofarads. In addition, high precision is still required for evaluating the noise and detection efficiency. This paper presents a design of a 10-bit PRG for 3D MAPS. The architecture of a voltage-scaling network combined with a voltage reference is proposed in order to obtain good stability in a large range of the load capacitance. A resistorscaling network and a bandgap voltage reference are carefully designed due to the absence of output operational amplifier. The proposed PRG is implemented in a 0.13 ȝm process. The simulation results indicate that the proposed PRG performs good differential non-linearity (INL) and integrated non-linearity (DNL), and the equivalent output noise is less than 200 ȝV. The voltage resolution of the PRG is about 500 ȝV. The PSRR of the PRG is about -65 DB in low frequency and is lower than -43 DB during the whole frequency domain. In addition, the PRG performs good tolerance to the variation of temperature and power supply voltage. Therefore, the PRG in this work is suitable for 3D MAPS and the other applications that require high precision and low noise with large load capacitance but ignorable load current.
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