Patent 5440556 Issued on August 8, 1995. Estimated Expiration Date: November 1, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
370/465, Adaptive340/825.02, Tree or cascade340/825.2, Synchronizing370/311, Signaling for performing battery saving370/509, Using synchronization information contained in a frame375/214, Including pulse regeneration or conversion375/219, TRANSCEIVERS375/257, CABLE SYSTEMS AND COMPONENTS375/354, SYNCHRONIZERS455/343.2Battery saving based on received signal
A data communication system, such as a local area network, is provided with a capability of transmitting isochronous data. The system conveys both isochronous data and non-isochronous data by time-multiplexing the data into a recurring frame structure on a four-bit nibble basis. The arriving data is de-multiplexed at the hub into separate channels for handling the separate streams by appropriate hardware. When no calls are in progress, a low power mode enables two ends of a network link to reduce power consumption by transmitting a single pulse once every 125 microseconds in lieu of transmitting an entire cycle template. Synchronization while in low power mode allows circuitry at both ends of a network link to remain synchronized to a single reference clock.
Other References
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November 1, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
