Oscillators – Solid state active element oscillator – Transistors
Reexamination Certificate
2006-04-04
2006-04-04
Mis, David (Department: 2817)
Oscillators
Solid state active element oscillator
Transistors
C331S10800D, C331S143000, C331S150000, C331S17700V, C315S2090SC, C315S226000
Reexamination Certificate
active
07023289
ABSTRACT:
A programmable oscillator comprises a capacitor; a current generator couplable to said capacitor that generates a charging current of said capacitor; further comprising at least one resistance coupled to said capacitor; a comparator coupled to said capacitor for comparing a voltage at the terminals of said capacitor with a prefixed reference voltage and for generating an output signal; a first switch, controlled by said output signal, coupled to said capacitor that creates a current path able to facilitate the discharging of said capacitor.
REFERENCES:
patent: 4723114 (1988-02-01), D'Arrigo et al.
patent: 4931750 (1990-06-01), Gontowski
patent: 6603366 (2003-08-01), Huang et al.
Beria Stefano
Pidutti Albino
Graybeal Jackson Haley LLP
Jorgenson Lisa K.
Mis David
Santarelli Bryan A.
STMicroelectronics S.r.l.
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