US Patent 7940921 Continuous power transfer scheme for two-wire serial link
Patent 7940921 was granted and assigned to Agere Systems on May, 2011 by the United States Patent and Trademark Office.
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The invention provides a single digital communication link between system-side and line-side circuitry in a DAA, capable both of carrying data signals and of transferring a substantial amount of power to the line-side circuitry. The invention comprises a system-side interface circuit, a line-side interface circuit, and an isolation barrier including a transformer. Each interface circuit is capable of connection to an upstream communication circuit (either line-side or system-side), from which it may receive data signals to be transmitted across the isolation barrier to the other interface circuit, and to which it may pass data signals received across the isolation barrier from the other interface circuit. The line-side interface circuit may further include a rectifier and a storage device.
US Patent 07940921 Continuous power transfer scheme for two-wire serial link US Patent 7940921 Continuous power transfer scheme for two-wire serial link
US Patent 07940921 Continuous power transfer scheme for two-wire serial link
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