×

Digital audio signal recorder

  • US 4,281,355 A
  • Filed: 01/29/1979
  • Issued: 07/28/1981
  • Est. Priority Date: 02/01/1978
  • Status: Expired due to Term
First Claim
Patent Images

1. A digital audio signal recorder for digitallizing analog signals in an audio frequency band to pulse-code-modulated signals and for recording the digitallized signals on a recording medium, the recorder comprising:

  • first check code generating means for producing a first check code signal by the sume of module 2 per bit of signals for individual pieces of digitallized data sampled at a given time;

    memory means connected to said first check code generating means for receiving the output of signals for said pieces of data in a set of signals for the set of pieces constituted by the individual pieces of sampled data and said first check code at addresses in said memory means spaces from each other along a time axis by a time interval greater than the expected time interval of the dropped-out signal;

    second check code generating means connected to said memory means and for producing a second check code signal and adding it to the signals of said set; and

    a recording means connected to said second check code generating means for receiving the output from said second check code generating meand and recording it on a recording medium.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×