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Signal multiplexing circuit

  • US 6,385,214 B1
  • Filed: 01/15/1999
  • Issued: 05/07/2002
  • Est. Priority Date: 01/16/1998
  • Status: Expired due to Fees
First Claim
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1. A signal multiplexing circuit which ensures multi-phase differential data changing in different phases to multiplex the data, comprising:

  • a plurality of signal extracting circuits, each receiving as input different differential data, including a first circuit for outputting the input differential data when receiving a select drive signal and a second circuit for outputting the input differential data with an inverted phase with respect to the first circuit so as to add it to the output of the first circuit and never being selected by the select drive signal;

    a driving source for selectively outputting the select drive signal to the first circuit of the signal extracting circuits; and

    an output circuit for multiplexing outputs of the signal extracting circuits and outputting the signal.

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