It consists of a high-performance floating-point signal processor(DSP) TMS320VC33 used as the core of the system,a dedicated video decoder,a dual-port static RAM with high capacity and a complex programmable logic device. The composite video signal conforming to the PAL video standard is collected,stored and processed. Finally,the system is applied to the television track system and the intelligent tracking is implemented.
It consists of a high-performance floatingpoint signal processor (DSP) TMS320VC33 used as the core of the system, a dedicated video decoder, a dualport static RAM with high capacity and a complex programmable logic device. The composite video signal conforming to the PAL video standard is collected, stored and processed. Finally, the system is applied to the television track system and the intelligent tracking is implemented.
This paper describes the theory of Y/C separated circuit. In order to separate the Y/C signal, TC9090AN/F uses a 8- bit A/D convertor and two 8- D/A convertors to change analog video signal signal into digital signal,and then reseparate it to change the digital Y and C signal into analog signal.
Synchronization and blank signal are implemented with single-chip computer. Image data stream is controlled to proceed DA with PLD. Electronic switch is selected to synthesize video.
In the Processing system of the multimedia video and audio information, there are four main modules which act as data communication, processing of audio signals, conversion of composite video signals (PAL or NTSC) and transmission of component video signals (RGB) respectively.
Especially, the paper also describes the method of using Micro Control Unit's (MCU) I/O ports to emulate PC bus and the algorithm of using MCU to convert the color spaces (YUV and RGB).
It integrates D/A and enˉcoder,and can accept16-bit wide YUV,CCIR656and MPEG data. It can encode these digital video data to an NTSC,PAL CVBS or S-Video signal. This makes the device ideally suited for a broad range of applicaˉtions with VCDs,projectors,digital televisions and players.