Multifunction Video Encoding Board with Personal Computer

摘要

The present invention relates to a multi-function video encoding board embedded in a personal computer, and more particularly, comprising: a PC interface and a boss control unit (2) for accessing and controlling respective parts of a multi video board in a personal computer; A locking unit 3 for generating a reference signal such as a clock of 13.5 MHz, a clock of 27 MHz, a horizontal synchronization, a vertical synchronization, etc. locked to a black burst which is a broadcast reference signal; An A / D converter 4 for converting an analog signal color signal into a digital signal; A digital encoding unit 5 for encoding the digital color signal into a broadcast composite signal and a luminance / chrominance signal; A mixing unit 6 for adding the luminance / chrominance signal to each other and finally synthesizing the composite signal into a composite signal; A key signal generator 7 for adjusting a degree of video superposition using a reference table for converting a digital key signal; A simple keyer 8 for checking whether all signals output from each unit are properly processed; By incorporating a multi-function video encoding board composed of RS422 interface 9 for various purposes, it is possible to secure a certain level of quality, and the quality is high, while the circuit is not complicated and the number of components is small. Therefore, the production cost of the product is also not high.