Patent ID: 7340070

Claim:
A voice-data processing circuit comprising: a first source selection means for selecting one input source from a plurality of input sources; a second source selection means for selecting one input source from the plurality of input sources; a first voice-data processing means for processing the input source selected by said first source selection means; a second voice-data processing means for processing the input source selected by said second source selection means; a first path switching means for selecting one of outputs of said first and second voice-data processing means and for outputting the selected output as a first voice output; and a second path switching means for selecting one of the outputs of said first and second voice-data processing means and for outputting the selected output as a second voice output, when selecting a specific input source that can be processed by only said second voice-data processing means instead of an input source currently being processed by said first voice-data processing means, said first source selection means selecting and delivering an input source currently being selected by said second source selection means to said first voice-data processing means, said first and second voice-data processing means simultaneously processing the identical input source other than said specific input source over a certain time period, said second source selection means then selecting and delivering said specific input source to said second voice-data processing means, and said first path switching means selecting the output of said second voice-data processing means and outputting a voice of said specific input source as said first voice output.