Unbalanced slic with a built-in ring circuit
AssigneeLegerity, Inc.
InventorRussell Apfel
Life of this patent
Estimating the term…
Abstract
A method and apparatus is provided for implementing an unbalanced subscriber line interface circuit with built-in ring circuit. A signal to be conditioned is received. An unbalanced output buffering function is performed upon the signal to be conditioned using an unbalanced buffering circuit. Performing the unbalanced output buffering function includes switching between a plurality of power supplies to maintain a predetermined maximum voltage across a plurality of devices relating to the unbalanced buffering circuit.
Claims32
A method, comprising:
- receiving a signal to be conditioned;
- 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 supplies to maintain a predetermined maximum voltage across a plurality of devices relating to said unbalanced buffering circuit.
An apparatus, comprising:
- means for receiving a signal to be conditioned;
- 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 supplies to maintain a predetermined maximum voltage across a plurality of devices relating to said unbalanced buffering circuit.
An apparatus, comprising:
- a first amplifier for receiving and conditioning a tip signal;
- a second amplifier for receiving and conditioning a ringing signal;
- a plurality of power supplies for providing operating voltages for operating said first and second amplifiers;
- and
- a plurality of switches for modifying said operating voltages of said first and second amplifiers based upon said ringing signal.
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;
- a plurality of power supplies for providing operating voltages for operating said first and second amplifiers;
- and
- a plurality of switches for modifying said operating voltages of said first and second amplifiers based upon said ringing signal.
A computer readable program storage device encoded with instructions that, when executed by a computer, performs a method, comprising:
- receiving a signal to be conditioned;
- 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 supplies to maintain a predetermined maximum voltage across a plurality of devices relating to said unbalanced buffering circuit.
Dependencies are inferred from the claim text.