Asynchronous multiport controlling technique for a single system

Details Asynchronous multiport controlling technique for a single system Asynchronous multiport controlling technique for a single system

1996-11-12

1998-07-07

Pham, Chi H.

Multiplex communications

Fault recovery

370218, 370241, 370242, 34082501, G01R 3108, H04L 100

Patent

active

057779830

ABSTRACT:
An asynchronous multiport controlling technique in a single processor of a remote security administration system, for example, including a scanning unit, a VAN (value added network) main unit, an X.25 interface module, and a VAN interface module to perform the asynchronous multiport communication with the VAN main unit, in which the asynchronous multiport controlling technique is carried out by collecting extracted VAN-related data from the X.25 interface module, searching out a transmitting port after collecting the VAN-related data, checking to determine whether or not the searched transmitting port is in normal state, generating a suitable request frame for a prescribed format when the transmitting port is in its normal state to transmit the request frame to the VAN main unit via the searched port, and receiving a result frame as many as the allotted number of ports after transmitting the request frame to store the result frame in a single buffer. Thus, several ports are processed in the asynchronous system in the single processor of the remote security administration system, so that the communication is executed in another port even though a port is down while performing the communication, thereby preventing data loss, while the processing with respect to the same operation is reduced to be effective in sharing the load per port.

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patent: 5502712 (1996-03-01), Akita
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