05173855 is referenced by 114 patents and cites 16 patents.

Separate, but related, firmware programs for multiple microprocessor-controlled irrigation controllers that are interrelated in their control of irrigation within an irrigation system are generated off-line at a personal computer. The programs are downloaded into a transportable memory device that holds sixty-four separate programs. The memory device is transported to each irrigation controller and plugged to a digital communication channel. The device automatically identifies itself to the controller, and vice versa. The appropriate program is automatically uploaded from the device to the controller. The controller's old program and its historical irrigation record data is loaded into the device and delivered to the personal computer for validation and analysis. A wireless remote test command assembly, an extension maintenance panel, or a radio-link central module may be alternatively connected to the controller's digital communication channel. The controller is powered by the memory device during the uploading.

Title
Distributed multiple irrigation controller management system
Application Number
255150
Publication Number
5173855
Application Date
November 4, 1991
Publication Date
December 22, 1992
Inventor
Jonathan M Luck
San Diego
CA, US
Wyn Y Nielsen
La Jolla
CA, US
Agent
William C Fuess
Assignee
Solatrol
CA, US
IPC
A01G 27/00
G05B 17/00
G05B 11/01
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