Title:
発振器の特性自動補償装置、特性自動補償方法、特性自動補償プログラム、及び測位信号受信機
Document Type and Number:
Japanese Patent JP4513742
Kind Code:
B2
Abstract:
A characteristic automatic compensating apparatus of an oscillator includes oscillating means, temperature detecting means, characteristic determining means for measuring a drift value of an oscillating frequency while changing the temperature and for determining a coefficient of an approximated equation representing temperature and the drift value, storing means for storing the coefficient, drift value predicting means, and characteristic updating means for updating the coefficient by the measured drift value of the oscillating frequency and the temperature, wherein the characteristic determining means represents the approximated equation representing the characteristic of the temperature detected by the temperature detecting means and the drift value of the oscillating frequency of the oscillating means by a polynomial.
Inventors:
Michio Kobayashi
Application Number:
JP2005503637A
Publication Date:
July 28, 2010
Filing Date:
February 19, 2004
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H03B5/32; G01C19/56; G01C19/5776; G01S1/00; G01S19/23; H03L1/02; H04B1/26; H04M1/00
Domestic Patent References:
| JPH08271606A | 1996-10-18 | |||
| JPH06291550A | 1994-10-18 | |||
| JPH08212280A | 1996-08-20 | |||
| JP2002303533A | 2002-10-18 | |||
| JP2001012952A | 2001-01-19 | |||
| JP2002058057A | 2002-02-22 |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Kazuhiko Miyasaka
Osamu Suzawa
Kazuhiko Miyasaka