Separation of ring detection functions across isolation barrier for minimum power
First Claim
1. A communication system, comprising:
- phone line side circuitry capable of being coupled to a user end of phone lines;
powered side circuitry capable of being coupled to the phone line side circuitry through an isolation barrier;
phone line side integrated ringer circuitry within the phone line side circuitry; and
powered side integrated ringer circuitry within the powered side circuitry.
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Accused Products
Abstract
A communication system of the present invention utilizes ring detection circuitry on both sides of an isolation barrier. More particularly, the ring detection circuitry may include ring burst circuitry on the phone line side of the isolation barrier and ringer timing circuits on the powered side of the isolation barrier. The digital burst peak signal may be transmitted through the isolation barrier to the ringer timing circuits. By splitting the ring detection circuitry so that the ringer timing circuits are placed on the powered side of the isolation barriers, a significant reduction in the power usage on the phone line side of the barrier related to the ring detection function may occur. The outputs of the ringing timing circuits may be provided to circuits on either side of the isolation barrier. Thus, the ring detection function may be accomplished in a system utilizing an efficient bidirectional capacitive barrier while still minimizing power usage on the line side of the barrier.
155 Citations
24 Claims
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1. A communication system, comprising:
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phone line side circuitry capable of being coupled to a user end of phone lines;
powered side circuitry capable of being coupled to the phone line side circuitry through an isolation barrier;
phone line side integrated ringer circuitry within the phone line side circuitry; and
powered side integrated ringer circuitry within the powered side circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A communication system, comprising:
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phone line side circuitry capable of being coupled to a user end of phone lines;
powered side circuitry;
an isolation barrier coupled between the phone line side circuitry and the powered side circuitry, the isolation barrier allowing the bidirectional communication of digital signals from the phone line side circuitry and the powered side circuitry;
phone line side integrated ringer circuitry within the phone line side circuitry; and
powered side integrated ringer circuitry within the powered side circuitry. - View Dependent Claims (14, 15, 16, 17)
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18. A method of providing a communication system capable of being coupled to a user end of a phone line, comprising:
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coupling an isolation barrier between powered side circuitry and phone line side circuitry; and
partitioning ringer circuitry between both the powered side circuitry and the phone line side circuitry such that first integrated ringer circuitry is located within the powered side circuitry and a second integrated ringer circuitry is located with the phone line side circuitry. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification