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Signal recording and playback apparatus for location monitoring which records prior to sensor input

  • US 5,973,867 A
  • Filed: 09/12/1997
  • Issued: 10/26/1999
  • Est. Priority Date: 11/10/1994
  • Status: Expired due to Fees
First Claim
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1. A magnetic recording and playback apparatus for recording and playing back input signals on a magnetic recording medium comprising:

  • a sensor provided externally of a body of the magnetic recording and playback apparatus for outputting trigger signals under prescribed conditions;

    control means for controlling conveyance of the magnetic recording medium to stop recording by stopping conveyance of the magnetic recording medium in a standby state while waiting for the trigger signals to be output and to start continuous recording by starting continuous conveyance of the magnetic recording medium at a point in time when the trigger signals are output; and

    signal preserving means for temporarily preserving the input signals and outputting the preserved input signals in order of preservation,said signal preserving means preserving the input signals in order of input while simultaneously outputting the preserved input signals in the order of preservation at any time and repeatedly performing overwriting with new input signals after an amount of preserved input signals exceeds storage capacity,recording of the preserved input signals starting by starting continuous conveyance of the magnetic recording medium at the point in time when the trigger signals are output.

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