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Temperature correction device and voltage control oscillation device

  • US 20050128016A1
  • Filed: 11/13/2003
  • Published: 06/16/2005
  • Est. Priority Date: 11/14/2002
  • Status: Active Grant
First Claim
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1. A temperature correcting apparatus comprising:

  • a storing unit for dividing an actually measured waveform of correcting voltages, which are required by an apparatus to be corrected at each of a plurality of different temperatures, by a positive integer multiple of a minimum resolution of D/A conversion, for obtaining voltage digital values representing voltage values at individual dividing points of the actually measured waveform and obtaining times corresponding to the voltage digital values, for generating a plurality of pairs consisting of the voltage digital values and the times at each temperature as correcting data, and for prestoring the correcting data of individual temperatures in correspondence with addresses representing the temperatures;

    temperature sensor means for detecting an ambient temperature of the apparatus to be corrected and producing a detection voltage;

    A/D converting means for A/D converting the detection voltage to produce detection address representing the temperature;

    processing means for reading out correcting data from said storing unit according to the detection address, extracting or calculating the voltage digital values about the correcting voltages required by the detection address, and the times corresponding to the voltage digital values from the correcting data, and for sequentially outputting the resultant voltage digital values in synchronization with the times; and

    D/A converting means for generating correcting voltages to be supplied to said apparatus to be corrected by performing D/A conversion of the voltage digital values output.

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