×

Apparatus for reproducing digital audio and video data

  • US 5,140,473 A
  • Filed: 11/20/1989
  • Issued: 08/18/1992
  • Est. Priority Date: 11/29/1988
  • Status: Expired due to Fees
First Claim
Patent Images

1. Apparatus for reproducing digital audio and video data recorded in successive parallel tracks which extend obliquely on a video tape and which include digital audio track portions arranged at opposite ends of digital video track portions, the audio digital data recorded in the digital audio track portion at one end portion of each track being also recorded in the audio track portion at the other end portion of an adjacent track so that double recording of the audio digital data is accomplished, comprising;

  • transducing means for reproducing the digital audio and video data recorded in said parallel tracks on said video tape;

    data processing means connected to said tranducing means and processing the reproduced digital audio and video data for extracting therefrom the digital audio data and providing the same with data constituting an error flag which indicates a presence of at least one error, and for separating the extracted digital audio data into first and second audio data which correspond to the double recording and at least one of which contains said error flag;

    control means for controlling positioning of said transducing means in a direction transverse to said tracks and including means for generating a skip signal by which said transducing means is made to skip a number of said tracks corresponding to one field of audio and video data;

    selection means for selecting as its output said first audio data in response to said error flag and for selecting said second audio data either in response to the absence of said error flag or in response to a selection signal generated by said control means in conjunction with the generation of said skip signal;

    first and second gain control means for controlling gains of said output of said selection means and said first audio data, respectively, and acting in response to said selection signal for controlling amplitude levels of said first and second audio data so that said amplitude levels change gradually in opposite directions; and

    combining means for combining the outputs of said first and second gain control means so that cross-fading thereof is effected during occurrence of the skip signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×