06021311 is referenced by 12 patents and cites 8 patents.

A message transmission system includes at least one primary station arranged for making transmissions on a down-link and a plurality of secondary stations arranged for making transmissions on an up-link, each of the secondary stations having its own address which is transmitted as part of the down-link message. Each of the secondary stations is configured for generating responses to messages as pseudo-random data sequences, the pseudo-random data sequence being generated by a secondary station at any one time being dependent on at least the address assigned to the secondary station and/or information contained in the message.

Title
Method of, and system for, transmitting messages
Application Number
8/975383
Publication Number
6021311
Application Date
November 20, 1997
Publication Date
February 1, 2000
Inventor
John R Bell
Fremont
CA, US
Peter M Relph
Roydon
GB
Rodney W Gibson
Haywards Heath
GB
Agent
Jack D Slobod
Assignee
U S Philips Corporation
NY, US
IPC
G08B 5/22
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