Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2011-05-10
2011-05-10
Kinkead, Arnold (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
C331S143000, C331S145000, C331S183000, C327S131000, C327S172000
Reexamination Certificate
active
07940135
ABSTRACT:
This oscillation circuit includes a triangular wave generation circuit that generates a triangular wave signal corresponding to an outputted clock signal, a comparison circuit that generates a clock signal corresponding to a comparison of the triangular wave signal with a first reference voltage and a second reference voltage, a current adjusting circuit that adjusts the value of adjusted current according to the power supply voltage for the comparison circuit, and a reference voltage generation circuit that generates the first reference voltage and the second reference voltage having a voltage differential that corresponds to the value of the adjusted current. The current adjusting circuit increases the adjusted current when the power supply voltage for the comparison circuit rises, and reduces the adjusted current when the power supply voltage drops. The reference voltage generation circuit increases the voltage differential between the first reference voltage and the second reference voltage when the adjusted current increases, and reduces the voltage differential when the adjusted current decreases.
REFERENCES:
patent: 5703473 (1997-12-01), Phillips et al.
patent: 7015764 (2006-03-01), Starr et al.
patent: 05-160690 (1993-06-01), None
patent: 10-233657 (1998-09-01), None
patent: 2002-043898 (2002-02-01), None
patent: 2002-217687 (2002-08-01), None
patent: 2004-072657 (2004-03-01), None
Kinkead Arnold
Sughrue & Mion, PLLC
Thine Electronics Inc.
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