Apparatus for automatically adapting the mean sound level of a television receiver

  • US 5,631,714 A
  • Filed: 11/22/1995
  • Issued: 05/20/1997
  • Est. Priority Date: 11/23/1994
  • Status: Expired due to Term
First Claim
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1. A system for automatically adapting the mean sound level of a television receiver fitted both with means for delivering audio signals detected within at least one sound path of a composite video signal and means for delivering video image signals detected from said composite video signal,comprising an adapting module comprising both a video adapting circuit comprising at least one additional input highpass filter and fixed-gain video amplifier connected in series and interposed in the video image processing circuits at said means for providing video image signals, and secondly an audio adapting circuit interposed in said sound path at said means for providing audio signals, to detect the mean sound input level, to compare said mean sound level with a pre-established reference mean level, and automatically to adapt the output mean sound level to maintain it at said pre-established reference mean level.

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