International Business Machines Corporation

Kennesaw State University Research and Service Foundation, Inc.

Scott Tippens

Vernon Roberts Norman

Lee Anton Sendelbach

Joseph Kinman Lee

Anthony D Walker

Gregory A Mirek

David W Lowther

Dale R Chamberlain

A method for transmitting information using a pulse may comprise transmitting, via a channel between a first device and a second device, an idle state for an idle time; and transmitting, via the channel, a pulse state for a pulse time, wherein the idle time and the pulse time define a value for a data word being transmitted, and wherein the duration of one or more of the idle time and the pulse time vary depending upon the value of the data word.

Variable pulse encoding communications protocol

A network interface card for attaching computers, work stations or the like to a Local Area Network (LAN) includes a device which indicates an address compare if selected bits in a first part of an address, in the address field of a received frame, matches bits stored in the network interface card and at least one bit of a code word stored at a particular address of an index RAM is set to a predetermined state. The particular address in the index RAM is identified by a second part of the address in the received frame. The range of address which can be recognized is further extended by a contents addressable memory (CAM) coupled to the device. The CAM makes a parallel compare between an input address and its contents and outputs a match signal if a match is found. A programmable control register is used to activate or deactivate the CAM or the device.

Multiple group address recognition

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Powder Springs, GA, United States of America

Scott Tippens