APPARATUS AND METHODS FOR PROVIDING CLOSE CAPTIONING IN A DIGITAL PROGRAM SERVICES DELIVERY SYSTEM

摘要

An apparatus for providing close captioning or text insertion in a digital program service delivery system comprising: a rate converter circuit (130) for receiving video codes and outputting video data, a video decoder circuit (132) for receiving the video data and outputting digital component video data, a digital to analog converter/analog encoder circuit (148) for converting the component video data into an analog video signal in a prescribed format; a line former circuit (142) for receiving close captioning digital data and forming a line of analog signal; a multiplexor (150) for inserting the line of analog signal into the analog video signal.