Patent ID: 6941060

Claim:
A video and audio data converter comprising: a first video and audio input/output section inputting and outputting first video and audio data; a second video and audio input/output section inputting and outputting second video and audio data; a video and audio data conversion section having a first input/output data control section, a second input/output data control section, and a timing generation section; a data storage section temporarily storing data input and output to said video and audio data conversion section; and an interface control section controlling an interface in order to input/output data between said data storage section and external storage means, wherein said first input/output data control section comprises: a first input data control section controlling input data to said data storage section, a first output data control section controlling an output timing for outputting output data from said data storage section to said first video and audio input/output section, a first selector switching output data of said data storage section with input/output data of said second input/output data control section, and then outputting the switched data to said first video and audio input/output section, a second selector switching output data from said first video and audio input/output section with input/output data of said second input/output data control section, and then outputting the switched data to said data storage section, and a third selector selecting an output either of said first selector or of said second selector; said second input/output data control section comprises: a second input data control section controlling input data to said data storage section, a second output data control section, controlling an output timing for outputting output data from said data storage section to said second video and audio input/output section, and a forth selector switching an output in which output data from said data storage section is output to said second video and audio input/output section with an output in which input data from said second video and audio input/output section is output to said data storage section; said timing generation section is configured so as to generate timing signals each representing a timing of a video data period, a timing of an audio data period, and a timing of a video or audio control information period of the video and audio data; and said video and audio data conversion section is configured so as to directly replace data of video and audio data input to and output from said first input/output data control section with data of video and audio data input to and output from said second input/output data control section in synchronism with the timing signals generated by said timing generation section, and performing insert edit processing.