Title:
DATA TRANSMISSION SYSTEM
Document Type and Number:
Japanese Patent JP3779121
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To solve problems of a conventional data transmission system employing a protocol converter that has deteriorated reply performance because analysis processing is performed always even for a simple communication processing such as data transmission/reception and that has targetted only the serial communication for an interface of a 2nd communication channel.
SOLUTION: Two communication connections 502, 503 are prepared for a transmission channel (1st communication channel) so as to divide communication connections into a communication connection for a control instruction processing and a communication connection for a data transmission/reception processing. A relay unit 200 (2nd computer) omits analysis processing of information received from the communication connection 503 for the data transmission reception. Thus, the entire processing performance of the relay unit 200 and the data transmission system can be enhanced. Furthermore, a communication interface between a facility unit 300 and the relay unit 200 is not restricted and a facility coordination processing section 202 in correspondence to a connected facility is prepared so as to be compatible with a multi-protocol.
Inventors:
Isao Imai
Application Number:
JP2000058080A
Publication Date:
May 24, 2006
Filing Date:
March 03, 2000
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H04L12/28; H04L12/46; H04L12/66; H04L45/24; H04L45/243; H04L69/14; H04L69/40; (IPC1-7): H04L12/56; H04L12/46; H04L12/28; H04L12/66; H04L29/06; H04L29/14
Domestic Patent References:
JP11150550A | ||||
JP63181549A | ||||
JP530159A | ||||
JP10233820A |
Other References:
第60回情処全大 2R-4
信学論,Vol.J83-B No.9,p1283-1292
信学論,Vol.J83-B No.9,p1283-1292
Attorney, Agent or Firm:
Shoji Mizoi
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