Circuitry and Techniques to Asynchronously Process, Output and/or Display Digital Video Data of a Broadcast

A video processing device to process a video signal of a source synchronous video broadcast which corresponds to a selected channel which is one of a plurality of channels of a broadcast spectrum, wherein the source synchronous video broadcast includes information which is representative of a frequency of a source clock, the video processing device comprising:

• tuner circuitry to convert the video signal of the source synchronous video broadcast of the selected channel to a baseband video signal;
• clock generation circuitry to generate a local clock signal;
• processing circuitry, coupled to the tuner circuitry and the clock generation circuitry, to:
• asynchronously, with respect to the source clock of the source synchronous video broadcast, digitize the baseband video signal using the local clock signal, wherein the local clock signal includes a frequency which is different from the frequency of the source clock, and
• generate video data using the digitized data which corresponds to the video signal of the source synchronous video broadcast of the selected channel;
• and
• output format circuitry, coupled to the processing circuitry, to generate formatted video data blocks by arranging the video data into one or more lines or frames of video data.

A machine readable storage medium having information stored thereon comprising data representing an expression of a video processing device to process a video signal of a source synchronous video broadcast which corresponds to a selected channel which is one of a plurality of channels of a broadcast spectrum, wherein the source synchronous video broadcast includes information which is representative of a frequency of a source clock, the expression of the video processing circuitry comprising:

• tuner circuitry to convert the video signal of the source synchronous video broadcast of the selected channel to a baseband video signal;
• clock generation circuitry to generate a local clock signal;
• processing circuitry, coupled to the tuner circuitry and the clock generation circuitry, to:
• asynchronously, with respect to the source clock of the source synchronous video broadcast, digitize the baseband video signal using the local clock signal, wherein the local clock signal includes a frequency which is different from the frequency of the source clock, and
• generate video data using the digitized data which corresponds to the video signal of the source synchronous video broadcast of the selected channel;
• and
• output format circuitry, coupled to the processing circuitry, to generate formatted video data blocks by arranging the video data into one or more lines or frames of video data.

A method of testing a video processing device which processes a video signal of a source synchronous video broadcast which corresponds to a selected channel which is one of a plurality of channels of a broadcast spectrum, wherein the source synchronous video broadcast includes information which is representative of a frequency of a source clock, the method of testing a video processing device comprises:

• generating digitized data of the video signal, which corresponds to the source synchronous video broadcast, using a local clock signal having a frequency which is different from the frequency of the source clock;
• generating video data using the digitized data of the video signal, which corresponds to the source synchronous video broadcast;
• generating formatted video data blocks by arranging the video data into one or more lines or frames of video data;
• generating temporal reference signals wherein each temporal reference signal is associated with at least one formatted video data block;
• and
• outputting of each formatted video data block and associated temporal reference signal.

A method of simulating on a computing system a video processing device which processes a video signal of a source synchronous video broadcast which corresponds to a selected channel which is one of a plurality of channels of a broadcast spectrum, wherein the source synchronous video broadcast includes information which is representative of a frequency of a source clock, the method comprising:

• simulating generation of digitized data of the video signal, which corresponds to the source synchronous video broadcast, using a local clock signal having a frequency which is different from the frequency of the source clock;
• simulating generation of video data using the digitized data of the video signal, which corresponds to the source synchronous video broadcast;
• simulating generation of formatted video data blocks by arranging the video data into one or more lines or frames of video data;
• simulating generation of temporal reference signals wherein each temporal reference signal is associated with at least one formatted video data block;
• and
• simulating output of each formatted video data block and associated temporal reference signal.