초록 ▼

In a contention polling arrangement wherein polling messages are transmitted by a central controller for simultaneously polling a group of remote stations, the polling message contains an address which defines the entire range of remote stations to be polled and the remote stations will respond if t

In a contention polling arrangement wherein polling messages are transmitted by a central controller for simultaneously polling a group of remote stations, the polling message contains an address which defines the entire range of remote stations to be polled and the remote stations will respond if their addresses fall between the address contained in the polling message and an address resulting from converting any trailing 0\s of the address in the polling message to 1\s.

대표청구항 ▼

A system having a central controller for polling a plurality of remote control modules, said controller polling groups of said remote control modules simultaneously and for resolving contentions when two or more remote control modules respond to a polling request by polling continuously smaller and/

A system having a central controller for polling a plurality of remote control modules, said controller polling groups of said remote control modules simultaneously and for resolving contentions when two or more remote control modules respond to a polling request by polling continuously smaller and/or different groups of remote control modules until contentions are resolved, said system comprising: central controller means for transmitting a polling message, said polling message including an address of N bits for defining a group of addresses relating to a group of remote control modules selected by said central controller to be polled; communications means connected to said central controller; a plurality of remote control modules connected to said communication means for receiving said polling message, each of said remote control modules having a unique N bit address stored therein and address comparison means for comparing said N bit address in said poll message to said N bit address of said remote control module to determine if said remote control module is within said group of remote control modules to be polled.