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Input data processor for D/A converter utilizing dithering

  • US 5,012,242 A
  • Filed: 03/12/1990
  • Issued: 04/30/1991
  • Est. Priority Date: 07/10/1989
  • Status: Expired due to Fees
First Claim
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1. An input data processor for a D/A converter for processing digital data which is input to a D/A converter, said digital data corresponding to an alternating signal of the type which crosses a zero level, said processor comprising:

  • a dither signal adder for adding a dither signal to said digital signal, and to provide a dithered digital signal; and

    a level shift circuit for shifting a level of said dithered digital signal, by an amount sufficient to prevent said dithered digital signal from crossing said zero level.

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