Timing adjustment circuit

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United States of America Patent

PATENT NO 5589788
SERIAL NO

08435877

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Abstract

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A timing adjustment circuit consists of a delay circuit made from n delay elements (n is an integer of 2 or more) connected in series, with which an input signal p0 is delayed in succession by each delay element, in order to generate respective delay-signals p1, . . . , pn, and a selection circuit with which any one of input signals p0 and aforementioned respective delay signals p1, . . . , pn are selected by n+1 number of selection signals s0, . . . , sn. The selection circuit comprises a selection-signal generation circuit, a selection gate circuit, a selection-signal holding circuit and a delay-signal holding circuit. The selection-signal generation circuit generates selection signals s0, . . . , sn before input signal p0 is input. The selection-signal holding circuit holds selection-signals s0, . . . , sn from the selection-signal generation circuit until the active edge of p0, . . . , pn reaches each selection gate. The delay-signal holding circuit comprises n delay-signal holding elements. When the active edge has arrived at each of the selection gates, each is held in an output state until the input to the selection gates becomes inactive, even if the selection signals changes.

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Patent Owner(s)

Patent OwnerAddress
ADVANTEST CORPORATION1-6-2 MARUNOUCHI CHIYODA-KU TOKYO 1000005 ?1000005

International Classification(s)

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  • 1995 Application Filing Year
  • H03K Class
  • 1153 Applications Filed
  • 784 Patents Issued To-Date
  • 68 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances1995199619971998199920002001200220030255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Goto, Masaharu Hannou, JP 20 379

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Patent Citation Ranking

  • 123 Citation Count
  • H03K Class
  • 99.64 % this patent is cited more than
  • 29 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges193221264415734322201 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +020406080100120140160180200220240260280300320340

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