Patent ID: 6466256
Filing Date: 2002-10-15
Classification: A61B,H04N

Abstract:
A video-signal processing device connectable to an electronic endoscope that outputs a component-type electric analog color video signal as at least one kind of video signal, the component-type electric analog color video signal being composed of a composite synchronizing signal-component, and at least three kinds of video-signal-components, said device comprising:an analog-to-digital converter for converting the video-signal-components into parallel electric digital video-signal-components; a parallel-to-serial converter for converting the parallel electric digital video-signal-components into serial digital video-signal-components and for outputting the serial digital video-signal-components in accordance with a series of clock pulses; a phase-locked loop circuit for coinciding a phase of the clock pulses with a phase of the composite synchronizing signal component of the component-type electric analog color video signal; a phase-lock detector for detecting the coincidence of the phase of the clock pulses with the phase of the composite synchronizing signal; and a signal-output stopper for stopping the outputting of the serial digital video-signal-components from said device until said phase-lock detector detects the coincidence of the phase of the clock pulses with the phase of the composite synchronizing signal, whereby the serial digital video-signal-components are output at proper timing from said device to a compatible external peripheral.