Title:
TIMING SIGNAL GENERATOR WITH TEMPERATURE CORRECTION FUNCTION
Document Type and Number:
Japanese Patent JP2015068830
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a signal generator that has individual oscillation corrected with respect to heat, respectively.SOLUTION: A timing signal generator with a temperature correction function has: a quartz oscillator 112 that generates a reference time signal; and a divider circuit 114 that is adapted to receive the reference time signal and output a rough time unit signal. The rough time unit signal has an actual frequency deviant to a desired frequency as a function of a temperature signal of the quartz oscillator 112. The timing signal generator further has a high frequency oscillator 116 that is adapted to generate an interpolation signal having a higher frequency than that of the quartz oscillator. A finite state machine 124 is configured to calculate a deviation correction signal as the function of the temperature, and the deviation correction signal has: an integer part that shows a number of an integer of pulses suppressed or injected in the divider circuit 114; and a fractional part that shows how much an output of a new time unit signal pulse is further delayed in order to correct a remaining deviation.
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Inventors:
DAVID RUFFIEUX
NICOLA SCOLARI
NICOLA SCOLARI
Application Number:
JP2014193368A
Publication Date:
April 13, 2015
Filing Date:
September 24, 2014
Export Citation:
Assignee:
MICRO CRYSTAL AG
International Classes:
G04G3/02; G04G3/00; H03L1/02
Domestic Patent References:
| JPH06342088A | 1994-12-13 | |||
| JPS61116406A | 1986-06-03 | |||
| JP2004516740A | 2004-06-03 | |||
| JPH06342088A | 1994-12-13 | |||
| JPS61116406A | 1986-06-03 | |||
| JP2004516740A | 2004-06-03 |
Foreign References:
| US5644271A | 1997-07-01 | |||
| US5644271A | 1997-07-01 |
Attorney, Agent or Firm:
Masaki Yamakawa
Shigeki Yamakawa
Shigeki Yamakawa
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