Client-server system compensating for data transmission delay

A server system, transmission delay technology, applied in the direction of digital transmission system, transmission system, electrical digital data processing, etc., can solve the problem that the clock cannot be corrected, etc.

Inactive Publication Date: 2003-11-19
OKI ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, each client's clock cannot be corrected unless the user of each client manually adjusts the clock

Method used

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  • Client-server system compensating for data transmission delay
  • Client-server system compensating for data transmission delay
  • Client-server system compensating for data transmission delay

Examples

Experimental program
Comparison scheme
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no. 1 approach

[0039] (1) System configuration

[0040] According to the present invention, in a server-client type information processing system in which a communication path in a network is uniquely determined, by causing the server to receive and process each client's transmission delay (obtained by recording the time represented by each client's clock) The delay) resolves geographic and temporal inequalities among clients.

[0041] In addition, using the server clock as a standard time, each client clock is automatically corrected based on the recorded difference between the server clock and each client clock.

[0042] The present embodiment is realized by a protocol higher than a connection protocol such as IP (Internet Protocol). The server and each client are connected through a dedicated telephone line, communication circuit exchange, and the like.

[0043] According to this embodiment, the ability of all clients to access the server is made equal, and the clock of each client is c...

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PUM

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Abstract

To equalize the access right from plural geographically separated client terminals to a server. When a server S receives a connection request signal at time T2, temporary transmission delay time from a terminal C to the server S is calculated. The server S transmits a connection response signal to the terminal C at time T3 as an answer (S20). When the terminal C receives the connection response signal at time T4, a time error (= terminal error A) is found out. Then, the terminal C sends a delay reporting packet to the server S (S30). The server S finds out real transmission delay time, and sets up response queuing time E , generates a registration completion informing signal, and transmits the signal to the terminal C (S40).

Description

[0001] This patent application claims priority based on Japanese Patent Application HEI09-141279 filed on May 30, 1997, the contents of which are incorporated herein by reference. technical field [0002] The present invention relates to a client-server system that compensates for a transmission delay between a client and a server, and to a client computer (referred to simply as a client in this application) suitable for use in such a client-server system. The present invention also relates to a recording medium storing a transmission delay compensation program or a time adjustment program, and a communication method between a client and a server. Background technique [0003] More specifically, the present invention relates to providing equal access to servers by geographically separated clients, and to a time management subsystem within such a system. [0004] In a conventional computer network system, a client computer is connected to a server through a dedicated telephon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/00H04L12/28H04L12/44H04L69/40
CPCH04J3/0667H04L7/0037H04L69/28
Inventor 千田浩一
Owner OKI ELECTRIC IND CO LTD
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