Oscillator circuit and test apparatus

Details Oscillator circuit and test apparatus Oscillator circuit and test apparatus

2007-01-22

2008-07-01

Mis, David (Department: 2817)

Oscillators

With synchronizing, triggering or pulsing circuits

C331S018000, C331S057000, C331S1170FE, C331S153000, C331S17700V

Reexamination Certificate

active

07394328

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.

REFERENCES:
patent: 2008/0061892 (2008-03-01), Staszewski et al.
patent: 10-70442 (1998-03-01), None
patent: 2001-282383 (2001-10-01), None
International Search Report issued in International Application No. PCT/JP2005/013154 mailed on Sep. 6, 2005 and English translation thereof, 2 pages.

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