Hospital bed having multiple touchscreen displays

A person-support apparatus comprising

• a communications network coupling a plurality of modules, each of the plurality of modules configured to control a function of the person-support apparatus,
• a first user interface including a first input device and a first graphical display,
• a second user interface including a second input device and a second graphical display, and
• an interface module coupled to the communications network, the interface module configured to transmit a first synchronous graphics signal to the first user interface via a first dedicated serial link and transmit a second synchronous graphics signal to the second user interface via a second dedicated serial link.

An interface module comprising

• a processor,
• a transceiver configured to communicate with a plurality of bed control modules over a communications network,
• a plurality of serial interfaces, each serial interface configured to communicate with a touchscreen display over a dedicated serial link, and
• a memory including a plurality of instructions which, when executed by the processor, cause the processor to (i) retrieve graphics data from the memory and (ii) output the graphics data to the plurality of serial interfaces to be synchronously transmitted to the touchscreen displays.