Method and apparatus for a single power supply for dual power mode
AssigneeLegerity, Inc.
InventorRussell Apfel
Life of this patent
Estimating the term…
Abstract
A method and apparatus is provided for using a single power supply in a dual mode fashion. A ringing signal is received. A waveform power supply signal based upon the ringing signal. An unbalanced output buffering function upon the signal to be conditioned using an unbalanced buffering circuit. Performing the unbalanced output buffering function includes switching between a plurality of power levels of the waveform power supply signal to maintain a predetermined maximum voltage across a plurality of devices relating to the unbalanced buffering circuit.
Claims26
A method, comprising:
- receiving a ringing signal;
- providing a waveform power supply signal based upon said ringing signal;
- and
- performing an unbalanced output buffering function upon said signal to be conditioned using an unbalanced buffering circuit, performing said unbalanced output buffering function comprising switching between a plurality of power levels of said waveform power supply signal to maintain a predetermined maximum voltage across a plurality of devices relating to said unbalanced buffering circuit.
An apparatus, comprising:
- means for receiving a ringing signal;
- means for providing a waveform power supply signal based upon said ringing signal;
- and
- means for performing an unbalanced output buffering function upon said signal to be conditioned using an unbalanced buffering circuit, performing said unbalanced output buffering function comprising switching between a plurality of power levels of said waveform power supply signal to maintain a predetermined maximum voltage across a plurality of devices relating to said unbalanced buffering circuit.
An apparatus, comprising:
- a circuit to provide a waveform power supply signal based upon a ringing signal and a constant power supply, said waveform power supply signal to provide a plurality of power supplies for providing operating voltages for operating a plurality of devices;
- said circuit comprising a plurality of switches to maintain a predetermined maximum voltage across said devices.
A system, comprising:
- a subscriber line;
- and
- a line card electronically coupled with said subscriber line, said line card comprising:
- a first amplifier for receiving and conditioning a tip signal;
- a second amplifier for receiving and conditioning a ringing signal;
- and
- a circuit to provide a waveform power supply signal based upon said ringing signal and a constant power supply, said waveform power supply signal to provide a plurality of power supplies for providing operating voltages for operating said first and second amplifiers;
- said circuit comprising a plurality of switches to maintain a predetermined maximum voltage across said first and second amplifiers.
A computer readable program storage device encoded with instructions that, when executed by a computer, performs a method, comprising:
- receiving a ringing signal;
- providing a waveform power supply signal based upon said ringing signal;
- and
- performing an unbalanced output buffering function upon said signal to be conditioned using an unbalanced buffering circuit, performing said unbalanced output buffering function comprising switching between a plurality of power levels of said waveform power supply signal to maintain a predetermined maximum voltage across a plurality of devices relating to said unbalanced buffering circuit.
Dependencies are inferred from the claim text.