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SIGNAL DETECTING APPARATUS FOR USE IN SOUND TRACK RERECORDING

  • US 3,725,604 A
  • Filed: 09/17/1971
  • Issued: 04/03/1973
  • Est. Priority Date: 09/17/1971
  • Status: Expired due to Term
First Claim
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1. A signal detecting apparatus for use in sound track rerecording comprising:

  • 1. magnetic storage means having voice frequency signals transcribed thereon, 2. first magnetic sensing means adapted to sense the presence or absence of said voice frequency signals on said magnetic storage means, 3. circuit means connected to said first magnetic sensing means and to a visual indicating means, 4. second magnetic sensing means associated with said magnetic storage means for sensing said voice frequency signals a predetermined time after they have been sensed by said first magnetic sensing means, 5. said circuit means being operable by the presence of voice frequency signals at said first magnetic sensing means for producing signals indicative of the exact beginnings and ends of said voice frequency signals and any pauses between said voice frequency signals being sensed by said second magnetic sensing means.

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