Data processing device and data recording method

Abstract

A data processing device includes a video input/output circuit for inputting an input video signal and outputting an output video signal. A detection circuit detects a first synchronizing signal in the input video signal input. Using a second synchronizing signal different from the first synchronizing signal, the video input/output circuit outputs the output video signal. The data processing device further includes a storage medium, a controller and an audio input circuit for inputting an audio signal using the second synchronizing signal. The controller controls recording of the inputted audio signal through the audio input circuit and recording of the output video signal onto the storage medium, such that the inputted audio signal and the output video signal are synchronized by the second synchronizing signal.

1 . A data processing device, comprising: 
 a video input/output circuit for inputting an input video signal and outputting an output video signal;    a detection circuit for detecting a first synchronizing signal in said input video signal input;    a storage medium;    an audio input circuit for inputting an audio signal using said second synchronizing signal; and    a controller,    wherein said video input/output circuit is operable to use a second synchronizing signal different from said first synchronizing signal to output said output video signal and said controller is operable to control recording of said inputted audio signal input through said audio input circuit and said output video signal onto said storage medium such that said inputted audio signal and said output video signal are synchronized by said second synchronizing signal.    
   
   
       2 . The data processing device as claimed in  claim 1 , wherein said video input/output circuit includes a storage circuit for storing said input video signal, and said video input/output circuit being operable to output said stored input video signal in accordance with said second synchronizing signal to provide said output video signal.  
   
   
       3 . The data processing device as claimed in  claim 1 , further comprising 
 a phase-locked loop circuit having a clock for carrying out phase locking with said first synchronizing signal, said signal generation circuit being operable to generate said second synchronizing signal based on said clock, said second synchronizing signal having a delay relative to said first synchronizing signal.    
   
   
       4 . The data processing device as claimed in  claim 1 , wherein said storage medium is selected from the group consisting of a hard disk, a magneto-optical disc, an optical disc, and a semiconductor memory.  
   
   
       5 . A data recording method, comprising: 
 detecting a synchronizing signal in a video signal;    holding said video signal by using said detected synchronizing signal;    outputting said held video signal using said second synchronizing signal different from said detected synchronizing signal;    using said second synchronizing signal, synchronizing an audio signal with said outputted video signal; and    recording said synchronized audio signal and said outputted video signal on a recording medium as a transport stream.    
   
   
       6 . The data recording method as claimed in  claim 5 , further comprising generating said second synchronizing signal to have a delay relative to said detected synchronizing signal based on a clock of a phase-locked loop circuit, said phase-locked loop circuit being phase locked with said detected synchronizing signal.