Patent ID: 7076572
Filing Date: 2006-07-11
Classification: H04L

Abstract:
1. A communication system comprising a control device, a plurality of communication terminals, and a communication device which connects the control device with the plurality of communication terminals and has a plurality of communication protocol modules for controlling communications of the plurality of communication terminals based on control information from the control device, the communication device including: a memory which temporarily stores the control information sent sequentially from the control device; control information acquisition means which sequentially acquires the control information temporarily stored in the memory and broadcasts it to the one or more communication protocol modules; a plurality of detection means each being provided in correspondence with each of the plurality of communication protocol modules at a front stage on an input side of each of the communication protocol modules for detecting whether the control information broadcasted by the control information acquisition means needs to be processed by the plurality of communication protocol modules; the plurality of communication protocol modules implement processing of the control information if a corresponding one of the plurality of detection means detect that the control information is meant to be processed by a communication protocol module; the memory having a control space for temporarily storing control information from the control device to the protocol modules and a status space for temporarily storing status information from the protocol modules to the control device; the control device writes the control information into the control space of the memory and reads the status information from the status space of the memory; the control information written to the control space includes a command number and command data; and the control device temporarily stores at least a pair of the command number and the command data in the memory sequentially.