Remote display chain for mutiple user interface applications

摘要

A multi-master serial bus that connects multiple utility monitoring devices with multiple remote electronic display units. The display units include an I²C microprocessor with an integrated LCD controller for controlling an LCD display and a set of buttons for changing what is displayed on the LCD display. They also include an I/O to I²C driver for sending button key presses to the remote monitoring device, which communicates the requested data to be displayed back to the display unit via the multi-master serial bus. Each remote electronic display unit has a unique address assigned to it, and when a user input is detected on the I²C bus by the utility monitoring device, the controller in the utility monitoring device sends monitored data to the detected address for display on the remote electronic display unit.