Title:
REFERENCE SIGNAL GENERATION DEVICE AND REFERENCE SIGNAL GENERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/149978
Kind Code:
A1
Abstract:
[Problem] To provide a ring oscillator capable of controlling frequency according to the delay amount of a delay element, with a structure for which fine-level frequency setting is possible. [Solution] A reference signal generation device 10 is provided with: a ring oscillator 24; a synchronization control unit 22; a ΔΣ modulation unit 23; and output units 42, 43. With the ring oscillator 24, the frequency of outputted signals can be adjusted. The synchronization control unit 22 compares a reference signal with signals outputted by the ring oscillator 24, or signals based thereon, and outputs the comparison results. Based on the comparison results of the synchronization control unit, the ΔΣ modulation unit 23 controls the ring oscillator 24 to perform output while switching a plurality of signals having different frequencies. The output units 42, 43 output signals that were outputted by the ring oscillator 24, or signals based thereon.
Inventors:
MIYAHARA KAZUNORI (JP)
Application Number:
PCT/JP2017/001685
Publication Date:
September 08, 2017
Filing Date:
January 19, 2017
Export Citation:
Assignee:
FURUNO ELECTRIC CO (JP)
International Classes:
H03L7/099; G04G3/00; G04G3/02; H03K3/354; H03L7/14; H03M3/02
Foreign References:
| JP2009171460A | 2009-07-30 | |||
| JP2010206344A | 2010-09-16 | |||
| JP2010506456A | 2010-02-25 | |||
| JP2006217509A | 2006-08-17 | |||
| JP2010273299A | 2010-12-02 |
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