Sony Corporation

Kensuke Baba

Keigo Ihara

Yoichi Kobori

Yasuyuki Kinoshita

Koji Ashizaki

Tsuyoshi Ide

Yuji Kawamura

Yushi Ihara

Kohei Nojiri

Takahiro Nishikawa

Toshiya Izumi

The present invention provides a device and a method for accurately and efficiently controlling an access from an external network to an internal network. Both a client device connectable to the external network and an application gateway store shared secret information (Secret) including a client ID: GUID(C) as an ID generated by the client and a server ID: GUID(S) as an ID generated by the application gateway in respective storage units. In response to an access request from the client, the application gateway determines whether the client has appropriate shared secret information (Secret) so as to determine an access right. With this configuration, a right of access from the external network to the internal network, such as a home network, can be efficiently and accurately determined.

Access control processing method

The present invention provides a device and a method enabling a client connected to an external network to efficiently obtain information about servers connected to an internal network. An information processing device serving as an application gateway connected at an interface between the external network and the internal network performs a server information obtaining process about connected servers through the internal network in response to a request for obtaining information about the servers connected to the internal network transmitted from the client connected to the external network, generates a device list based on the obtained server information, and transmits the device list to the client through the external network. With this configuration, the client connected to the external network can efficiently obtain information about the servers connected to the internal network.

Information processing device, an information processing method, and a computer program to securely connect clients on an external network to devices within an internal network

In a printing system in which with a plurality of different types of controllers connected to one serial bus, different types of print data can be inputted to and printed by a printing unit. When a set top box and desktop and portable personal computers, different in type from each other, are connected to a IEEE 1394 serial bus, screen data is outputted from the set top box to an AV/C printer and PDL data is outputted from the personal computers to the AV/C printer. The AV/C printer judges the image type of the input data. Based on the image type, the printing system converts the print data to a type of print data supported by the AV/C printer.

Data converting apparatus and method, printing apparatus and method, printing controlling apparatus and method, printing system and method, and data transmitting method for converting print data

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Kanagawa, Japan

Kensuke Baba