Abstract:
The method provides the functions of managing token, composing and preserving logical ring and detecting & recovering the error by controlling MAC layer. The method comprises: the 1st step for initializing system, the 2nd step for storing the intializing table of token bus controller, the 3rd step for resetting the token bus controller, the 4th/5th steps for executing the intializing command, the 6th/7th steps for verifying and clearing the DONE bit, the 8th/9th steps for determining the operation of token bus controller, the 10th step for clearing DONE bit, the 11th step for initializing the modem, the 12th step for completing the MAC operation.
Abstract:
PURPOSE: The method for negotiating the capability of the application program of module controlling multi-point data conference is provided to improve the communication performance by enabling all the system, joining to the conference, to communicate each other in the best status. CONSTITUTION: The method comprises the following steps. When the new application capability is registered(601), it is checked if the Capability_ID of the new registered application capability exists in the Capability_List of the capability roster(602). If no, the number of entities sets to one(603). The new Capability_ID is appended to the capability roster(604). If the Capability_List exists, one is added to the number of entities(605) and it is checked if the type of the application capability class is Maximum_Class(606). In case of Maximum_Class, it is checked if the inputted capability value is bigger than the application capability value of the capability roster(607). If yes, the inputted capability value is set as the new capability negotiation value(608). Otherwise, it is checked if the inputted capability value is smaller than the application capability value of the capability roster(607). In case of small, the inputted capability value is set as the new capability negotiation value(611). If the capability class is the logical class, the process does nothing.
Abstract:
본 발명은 다지점 회의 제어기의 참석자 정보 교환 방법에 관한 것이다. T.124에서는 새로운 노드가 회의에 참여할 때 트리 구조로 연결된 상태에서 새로운 노드의 정보를 상위 노드에게 전달하게 되며, 이때 상위 노드는 지금까지 자신이 관리하고 있던 하위 노드들의 정보에 새로운 노드 정보를 포함시킨 후, 이러한 모든 정보를 다시 자신의 차상위 노드에게 전달하는 방식을 채택하고 있다. 이처럼 T.124에서 규정하고 있는 방식으로 수행하는 경우 각 노드의 처리 성능 및 각 노드간에 전달되는 데이터의 양이 불필요하게 증가되는 불합리한 점이 있다. 본 발명에서는 새로운 노드로부터 새로운 정보가 전달되었을 때, 자신의 노드가 이미 가지고 있던 정보와 함께 차상위 노드에게 전달하지 않고, 하위의 새로운 노드로부터 전달 받은 정보만을 자신의 차상위 노드에게 전달하도록 하므로써 불필요한 처리 시간 및 불필요하게 전송되는 데이터의 양을 제거할 수 있다.
Abstract:
When the network system receives acknowledgment request data frame in the data link layer of Mini-MAP network, the method sends acknowledgment quickly to increase system efficiency. Mini-MAP network board consists of a micro-controller (10), a system ROM (12) loading system software, a non-volatile RAM (14), a token-bus controller (16), a dynamic RAM controller (18), a system RAM (20), a dual-port RAM (22), a modem (24) and an arbitration logic (26). Micro-controller consists of a micro-processor, a clock generator, a DMA controller, a timer and etc.