Token ring synchronization

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5090025
SERIAL NO

07558197

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Abstract

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An improved local area network node of the type described in ANSI/IEEE Standard 802.5, including a receiver-demodulator having an input connectable to the ring and having a received data output and a received clock output, an elasticity buffer connected to the received data output, a modulator for modulating the output of the buffer in accordance with a signal at a clocking input of the modulator, and a phase-locked loop interposed between the received clock output of the demodulator and the clocking input of the modulator, the loop including a voltage-controlled oscillator, a phase detector and a filter connected for providing a control-voltage to the oscillator.

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Patent Owner(s)

Patent OwnerAddress
TDC CORPORATION THE7880 BACKLICK ROAD UNIT 2 SPRINGFIELD VA 22150

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
MacEachern, Stuart P Uxbridge, MA 13 193
Marshall, Alan C Framingham, MA 2 47
Salwen, Howard C Newtonville, MA 2 47

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