Patent ID: 6184939
Filing Date: 2001-02-06
Classification: H04N

Abstract:
A video signal processing apparatus connectable to a personal computer for processing an analog NTSC composite video signal, said apparatus comprising:an analog to digital converter for converting said analog NTSC composite video signal into a digital signal represented in a binary form;a phase-locked loop connected to said analog to digital converter to form a feed back loop, said phase-locked loop generating a sampling clock signal having a frequency multiple-time of a color burst signal and in phase the color burst signal, and transmitting said sampling clock signal to said analog to digital converter;a first-in-first-out buffer coupled to said analog to digital converter for sequentially storing said digital signal converted by said analog to digital converter;a frame buffer with a predetermined capacity of multiple frames of digital video signal, connected to said first-in-first-out buffer;a control unit for providing said frame buffer and said first-in-first-out buffer timing signal, an output terminal of said control unit connected to the phase-locked loop for controlling the phase of the sampling clock signal; anda printer port interface connected to said frame buffer for transmission of said video signal and control signal from said video signal processing apparatus to said personal computer.