04535401 is referenced by 108 patents and cites 18 patents.

An apparatus having a two wire system for providing both power and data communication between a master controller and at least one subcontroller. The master controller can also be connected through the conductors to submaster controllers which in turn have subcontrollers connected thereto. The master controller is capable of addressing each of the submaster controllers and subcontrollers individually. A three voltage level system can be utilized to provide both power and addressing through the two conductors. Data transmitted by the subcontrollers can be analog and/or digital. A data entry device and an information display device can be connected to the master controller in the same manner as other subcontrollers.

Title
Apparatus and method for providing power from master controller to subcontrollers and data communication therebetween
Application Number
6/394033
Publication Number
4535401
Application Date
June 30, 1982
Publication Date
August 13, 1985
Inventor
Thomas C Penn
Richardson
TX, US
Agent
Melvin Sharp
James T Comfort
William E Hiller
Assignee
Texas Instruments Incorporated
TX, US
IPC
G06F 15/46
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