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Communication apparatus and communication method

A technology of a communication device and a communication method, which is applied in the directions of image communication, digital transmission system, electrical components, etc., can solve problems such as wrong data transmission, and achieve the effect of preventing wrong transmission of data.

Inactive Publication Date: 2006-09-06
MURATA MASCH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even when the destination IP address is obtained using the static DNS service, if the IP address of the other party's communication device changes due to changes in the settings of the other party's communication device, data transmission errors may also occur.

Method used

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  • Communication apparatus and communication method
  • Communication apparatus and communication method
  • Communication apparatus and communication method

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Embodiment Construction

[0018] Next, a first embodiment of the present invention will be described. In this embodiment, a facsimile compound machine will be used as an example for description. This facsimile compound machine is equipped with: a G3 or other facsimile communication function for facsimile communication through the public switched telephone network; an Internet facsimile communication function for facsimile communication through the Internet Send e-mail. Needless to say, the present invention can also be applied to a communication device that directly connects to a counterpart communication device using an IP address acquired by DNS service to perform peer-to-peer data communication. For example, the present invention is not limited to the above-mentioned facsimile complex machine, and the present invention can also be applied to a communication device having only an Internet facsimile communication function or other types of IP communication devices.

[0019] FIG. 1 shows an example of...

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Abstract

A communication apparatus and method. Identification information statically allocated to a remote communication apparatus is designated. A domain name of the remote communication apparatus is presented to acquire an IP address by using a DNS service. A connection is made to a remote communication apparatus, to which the IP address acquired is allocated, to receive a response message. Information included in a predetermined section of the response message and all or a predetermined part of identification information designated are compared. When all or the predetermined part of the identification information coincides with the information included in the predetermined section of the response message, substantive data is transmitted to the remote communication apparatus connected.

Description

technical field [0001] The invention relates to a communication device and a communication method for Peer to Peer Internet Protocol (IP) communication. Specifically, it relates to a communication device and a communication method for performing data communication by directly connecting to a device with a target IP address obtained using a Dynamic Domain Name System (DNS) service or a Static DNS service. Background technique [0002] A communication device performing IP communication may acquire a destination IP address using a dynamic DNS service in order to perform data communication with a counterpart. The dynamic DNS service is realized through cooperation between the dynamic DNS server and the Dynamic Host Configuration Protocol (DHCP) server. The dynamic DNS server transmits information bidirectionally with the DHCP server at any time. Furthermore, the dynamic DNS server adds and deletes the correspondence relationship between the domain name of the DHCP client and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/58H04N1/00H04L12/70
CPCH04L29/12066H04L69/40H04N1/32683H04L29/08306H04N1/32667H04L29/14H04L67/104H04L61/1511H04L61/2046H04L29/12264H04L61/4511H04L61/5046H04L12/56H04N1/00209H04L61/00
Inventor 谷本好史
Owner MURATA MASCH LTD