Title:
発振回路、及び試験装置
Document Type and Number:
Japanese Patent JP4435634
Kind Code:
B2
Abstract:
An oscillator circuit that generates an oscillation signal is provided. The oscillator circuit includes an oscillator that generates the oscillation signal based on positive feedback of a signal, a synchronization signal generating section that generates a compulsory synchronization signal having an edge that (i) crosses a zero cross point at an ideal timing of an edge of the oscillation signal every predetermined number of cycles of the oscillation signal and (ii) has a gradient in the same direction as the edge of the oscillation signal, and a combining section that injects the compulsory synchronization signal into a positive feedback path of the oscillator.
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Inventors:
Daisuke Watanabe
Toshiyuki Okayasu
Toshiyuki Okayasu
Application Number:
JP2004212231A
Publication Date:
March 24, 2010
Filing Date:
July 20, 2004
Export Citation:
Assignee:
Advantest Corporation
International Classes:
H03K5/00; G01R31/28; H03K3/03; H03L7/00
Domestic Patent References:
| JP1093399A | ||||
| JP2001282383A |
Attorney, Agent or Firm:
Akihiro Ryuka