Communication system using communication network and communication method

Abstract

A communication system for guaranteeing only one each of two processing operations, correlated with each other and executed on different devices. A server has a unit which, on receipt of a first processing request, with identification information, executes this processing only once for one item of the identification, and a unit for transmitting a first processing completion notice to the transmission source of the processing request on completion of the first processing or on re-receipt of the processing request for the first processing with the same identification of the completed first processing. The client has a server, a unit for transmitting the processing request for first processing with identification information, a unit for executing a second processing, previously correlated with the first processing, on receipt of the completion notice, and a unit for re-transmitting a processing request on detection of an error before receipt of a transmitted completion notice.

1 . A server device for surrogating billing of the cost for payable contents, comprising: 
 billing processing executing means which, on receipt of a processing request for billing processing for the cost of said contents, afforded with the identification information, executes said billing processing only once for one item of said identification information, and completion notice transmitting means which, on completion of said billing processing by said billing processing executing means, or on re-receipt of said processing request for said billing processing, afforded with the same identification information as that of the completed billing processing, transmits a completion notice of said billing processing to the source of transmission of said processing request.    
     
     
         2 . A billing surrogating method in a server device for surrogating the billing of the cost of payable contents, comprising the steps of: 
 executing said billing processing only once for one item of the identification information, on receipt of a processing request for billing processing for the cost of said contents, afforded with the identification information; and    transmitting a completion notice of said billing processing to the source of transmission of said processing request, on completion of said billing processing or on re-receipt of said processing request for said billing processing afforded with the same identification information as that of the completed billing processing.    
     
     
         3 . A computer-readable recording medium having recorded thereon a program for allowing to perform concerted processing by said computer with another device connected thereto over a network, said program being such a one in which 
 said computer on receipt of a processing request for a first processing, afforded with the identification information, executes said first processing only once for one item of said identification information, and in which    said computer on completion of said first processing or on re-receipt of said processing request for said first processing, afforded with the same identification information as that conferred to the completed first processing, transmits a completion notice of said first processing to the source of transmission of said processing request.    
     
     
         4 . A computer-readable recording medium having recorded thereon a program for surrogating the billing of the cost of a payable content by said computer, said program being such a one in which 
 said computer on receipt of a processing request for billing processing for the cost of the payable content, afforded with the identification information, executes said billing processing only once for one item of said identification information, and in which    said computer on completion of said billing processing or on re-receipt of said processing request for said billing processing, afforded with the same identification information as that conferred to the completed billing processing, transmits a completion notice of said billing processing to the source of transmission of said processing request.    
     
     
         5 . A computer-readable recording medium, having recorded thereon a program for having said computer perform concerted processing with a server device connected to said computer over a network; said program being such a one in which 
 said computer transmits a processing request for a first processing, afforded with the identification information, to said server device; and in which,    on receipt of a completion notice of said first processing from said server device, said computer executes second processing correlated in advance with said first processing; said computer re-transmitting said processing request to said server device if a communication error is detected before receipt of said completion notice.    
     
     
         6 . A computer-readable recording medium, having recorded thereon a program for having said computer perform concerted processing of validating invalidated contents with a server device; said program being such a one in which 
 said computer transmits a processing request for billing processing, afforded with the identification information, to said server device; and in which, on receipt of a completion notice of said billing processing from said server device, said computer executes the processing of validating invalidated contents; said computer re-transmitting said processing request to said server device if a communication error is detected before receipt of said completion notice.