Vernier Networks, Inc.

Rpx Corporation

Autonomic Networks, Inc.

Channelnet Corporation

James B Klingensmith

Elton Armstrong

Brent Dimick

Paul J Yursis

Ernest H Wilson, Jr

Matthew Harris

Billy B Waldron

A system and method adjusts the polarity of power provided over Ethernet cabling according to configuration information received.

Method for providing different polarities of power supplied over ethernet cables

System for providing different polarities of power supplied over ethernet cables

A system and method indicates the configuration of power to be provided over Ethernet cabling.

System and method for indicating a configuration of power provided over an ethernet port

A system and method electrically isolates configuration and status information about power provided over Ethernet cabling.

System and method for safely controlling, and receiving status of, power over ethernet

A system is described with which data can be reliably transferred at high channel speeds between an IBM CPU channel and a remotely located control unit through a high speed full duplex data link that can be a T3 speed telephone line. A pair of similar coupler units are provided, one of which is connected by way of conventional bus and tag cables to a channel and the other by such cables to the remotely located control unit. In one embodiment, the coupler units have extended buffers to enable retransmissions of entire data blocks in case of error. A special counter technique is described whereby the transfer of fixed length data blocks for I/O devices such as printers can be accommodated without creating incorrect length problems with the channel. A high speed microprocessor is used to regulate the initialization and end sequences needed to establish communication between the channel and a control unit while a data transfer assist logic controls the transfer of data which is transmitted over the serial data link without interlock signals normally used between a channel and a control unit. A data streaming mode is accommodated.

CPU channel to control unit extender

Growing community of inventors

San Jose, CA, United States of America

James B Klingensmith