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US 7,023,325 B2Granted
Programmable electronic circuit
AssigneeEdwards Systems Technology, Inc.
InventorAngelo S. Arcaria
Life of this patent
Estimating the term…
Abstract
A programmable electronic circuit is disclosed. The circuit includes a CPU, signal-generating circuitry, and RC circuitry having at least two capacitors, such that when both of the capacitors are switched into the RC circuitry by the CPU, a signal is produced from an output of the signal-generating circuitry that is longer in duration than when one of the capacitors is switched into the RC circuitry.
Claims26
An electronic device comprising:
- a CPU;
- and
- a signal-generating circuit, wherein the signal-generating circuitry comprises RC circuitry having a first capacitor and a second capacitor, the first and second capacitors are detachably coupled to signal-generating circuit and are switched into the signal generating circuit by the CPU to extend the length of an output signal.
A method for programming a chime device, comprising:
- generating a voltage square wave at a node of signal-generating circuitry;
- generating a charge voltage signal from charging a detachable first capacitor;
- if needed, switching a detachable second capacitor into the signal generating circuit by a CPU to extend the length of charge voltage;
- inputting the charge voltage to an input of the adder circuit;
- outputting to the node the charge voltage signal during the time when a voltage of the voltage square is lower than the charge voltage;
- and
- outputting the voltage of the square wave when the voltage of the voltage square wave is greater then the charge voltage.
4 more elements
A programmable electronic apparatus, comprising:
- means for generating a voltage square wave at a node of a signal-generating circuitry;
- means for generating a charge voltage signal from charging a detachable first capacitor, in the signal-generating circuitry;
- if needed, means for switching a detachable second capacitor into the signal generating circuit by the CPU to extend the charge voltage signal;
- means for inputting the charge voltage signal to an input of the adder circuit;
- means for outputting an output signal to the node that is the charge voltage signal during the time when a voltage of the voltage square wave is lower the charge voltage;
- means for outputting an output signal that is the voltage of the voltage square wave to the node when the voltage of the voltage of the square wave is greater than the charge voltage signal.
3 more elements
Dependencies are inferred from the claim text.