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Server apparatus, client apparatus and network system

A client and server technology, applied in the transmission system, data exchange through path configuration, electrical components, etc., can solve problems such as no response and inability to confirm the client device

Inactive Publication Date: 2007-03-21
GK BRIDGE 1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, there is no need for the client device side to be discovered by the server device in normal use, and there is no response to advertisement and search definitions as described above
Therefore, there is a problem that the client device (control point existing on the network) that can be accessed cannot be confirmed on the server device side.

Method used

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  • Server apparatus, client apparatus and network system
  • Server apparatus, client apparatus and network system
  • Server apparatus, client apparatus and network system

Examples

Experimental program
Comparison scheme
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no. 1 example

[0047] FIG. 1 is a block diagram showing a structural example of a network system according to a first embodiment of the present invention. In FIG. 1, the same components as those in FIG. 6 have the same codes. According to the network system of the present invention, the processing of the server 1 and the client 2 is different from the conventional network system shown in FIG. 6 .

[0048] In server 1 shown in FIG. 1 , CPU 101 causes a monitor to display information acquired from address acquisition unit 113 and communication IF 107 using GUI controller 110 and user operation IF 111 . And, the CPU 101 causes the device registration unit 109 to (i) register and delete device information of a device designated by the user in the storage unit 114 by the user operating the IF 111 and (ii) acquire the device information stored in the storage unit 114 . The content data recording / playback unit 102 records and plays back AV content. The data output management unit 103 manages the ...

no. 2 example

[0065] According to the present embodiment, an example of restricting access using information on registered clients in the network system according to the first embodiment will be explained.

[0066] The communication IF 107 of the server 1 receives access from other devices using a plurality of IP ports. UPnP is distributed within the home, and preferably UPnP devices exclude access from outside the home. Therefore, the server 1 executes the following processing.

[0067] The address acquisition unit 113 acquires the IP address of the access device from the message received from the communication IF 107 . The server 1 causes the CPU 101 to (i) calculate "AND" between (a) the own address of the server 1 acquired through the device registration unit 109 and stored in the storage unit 114 and (b) the subnet mask setting, (ii) further calculating an AND between the IP address of the access device and the subnet mask setting, and (iii) comparing the two AND results. As a resul...

no. 3 example

[0074] According to the method as described in the second embodiment, the server 1 does not respond to M-Search, and cannot confirm the number of unregistered devices existing on the network. Also, in the case of using the server 1 as a client device, if a search from another server is matched, the server 1 needs to respond to an M-Search from the other server. However, there is a problem that Server 1 cannot respond to the above M-Search from this other server.

[0075] According to the third embodiment, an example will be described as another mapping method in which the server 1 responds to M-Search but does not respond to the following device description information acquisition and service description information acquisition.

[0076] FIG. 8C is a block diagram of a communication sequence between the server 1 and the client 2. As shown in FIG. Like a conventional network system, the search information judgment unit 106 of the server 1 compares the information of the ROM 10...

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PUM

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Abstract

The network system comprises an original device description indicating a control point so as to register an address used for MAC address authentication. The server side acquires information from the device(s) connected to the network, and only the device(s) having the above mentioned description are listed and displayed. By responding to the access from the non-registered device in a predetermined manner, the device is prompted to be registered.

Description

technical field [0001] The present invention relates to a server device, a client device, and a network system capable of easily securing access to content. Background technique [0002] In order to be able to detect and control devices connected to the network, a protocol called Universal Plug and Play (UPnP) was standardized (for example, see Non-Patent Literature, "Universal Plug and Play Device Architecture Version 1.0", [Online], 2000 July 8, 2000, UPnP Forum, [Search Date: March 25, 2000], Internet URL: http: / / www.upnp.org / download / UPnPDA10_20000613.htm). [0003] UPnP uses standard Transmission Control Protocol / Internet Protocol (TCP / IP) and Internet Protocol, and implements functions such as acquiring information about the existence and functions of other devices, and notifying own-owned functions. Therefore, installation, installation, and addition of peripheral devices can be easily performed. [0004] The basic components of a UPnP network are devices, services,...

Claims

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Application Information

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IPC IPC(8): H04L29/08G06F21/44H04L12/28H04L29/06
CPCH04L67/26H04L63/101H04L63/0263H04L67/14H04L67/55H04L12/28H04L65/40
Inventor 山田正纯中塚纹太山村敏记
Owner GK BRIDGE 1
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