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Signal synthesis circuit to synthesize luma signals and chroma signals

  • US 9,451,227 B2
  • Filed: 09/26/2014
  • Issued: 09/20/2016
  • Est. Priority Date: 09/09/2014
  • Status: Active Grant
First Claim
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1. A signal synthesis circuit comprising:

  • a first gain adjusting unit configured to receive luma signals from a video signal source and adjust gains of the luma signals;

    a delay unit coupled to the first gain adjusting unit, the delay unit configured to delay phases of the luma signals output by the first gain adjusting unit, wherein the delay unit comprises a plurality of resonance oscillation units coupled in series; and

    a second gain adjusting unit coupled to the delay unit, the second gain adjusting unit configured to receive chroma signals from the video signal source and adjust gains of the chroma signals so that the phase delayed luma signals output by the delay unit and the chroma signals output by the second gain adjusting unit are synthesized into composite video broadcast signals (CVBS).

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