Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Matushita Electric Industrial Co., Ltd.

Yuichi Kawaguchi

Yuji Shimizu

Masao Oomoto

Masato Ohura

Shinichi Tsumori

Jun Ikeda

Hiroyuki Yoshida

Hisashi Inoue

Satoshi Kajita

Takashi Katsura

Kenichi Noridomi

Kazuhide Sawabe

Koji Arimura

Makoto Matsuoka

The present invention includes a repeater and a server for controlling access, from a terminal of an outside network, to the server of an inside network. The repeater and the server permit a packet transmission from the terminal to the server under limited conditions. When the server acknowledges a connection for the permitted packet, transmission conditions for packets to be sent to the server are loosened. Subsequently, packet transmission between the terminal and the server is controlled under the loosened transmission conditions. As for encrypted packets, the server decodes the encrypted packets and notifies the repeater of relevant information.

Access-controlling method, repeater, and server

A resource management server that manages information concerning the resource reservation status and the information of groups of all electronic equipments connected to hubs. When an electronic equipment is newly connected to a port of one of the hubs, the electronic equipment issues a resource request and the group information to the resource management server. The resource management server sets up a network path between the newly connected electronic equipment and the other electronic equipments belonging to the same group as the newly connected electronic equipment, and judges if the resource request can be accepted on the setup network path.

Resource management system

A terminal comprises a packet receiving unit, a packet sending unit, a link-state detecting unit that detects a link-up to a switching device, a configuration-change notifying unit, and a resource reservation table. When the link-state detecting unit detects a link-up, the terminal notifies network configuration information and network resource reservation information to a management device. When a link state is changed, the management device can immediately manage the network based on the latest network configuration information and the latest network resource information.

Communication system and its terminal

Access points for supporting wireless communications, a packet transmission device, and terminals for handing-over between service areas are provided. An existing terminal is provided with respect to this access point for performing a Quality of Source (QoS) guarantee. Accordingly, when a new terminal is handed over to be engaged in wireless communications with this access point, the priority of the packet associated with the existing terminal and/or new terminal is changed.

Wireless communications system, packet transmission device used in the system, and access point

The communication system supports reservation of network resources. The base stations relay packets among the terminals, and perform priority control based on the priority set to the packets. In the terminal, the communication-managing table stores communication information of own terminal and a partner thereof. The packet-transmitting unit, setting priority to the packets, transmits the packets. When link condition of own terminal change, the link-managing unit updates, in order to prevent from quality deterioration of the other terminals, the priority of each of the packets whose source terminal is the own terminal.

System and method for communications with reservation of network resources, and terminal therefore

A justification/authentication personal certificate system stores in a remote database a counterpart of an identifier and a digital watermark contained in the personal certificate. The personal certificate includes the digital watermark embedded in an authentic image such as a facial photograph, a retinal scan, or a fingerprint. When the personal certificate is used, the authentic image is read from the personal certificate, and the digital watermark information is extracted. The digital watermark information and the identifier are compared with the counterparts stored in the database. If the extracted digital watermark information is identical to the information in the database, then the personal certificate is judged to be unjustifiable. In one embodiment, at least one of the identifier and digital watermark are changed each time the system justifies the personal certificate.

Justification authenticating system, personal certificate issuing system, and personal certificate

An object of the present invention is to reduce information volume going through a network when a multi-media E-mail is transmitted/received therethrough, which includes various types of media information being temporally and/or spatially related to one another. To attain the object, a return mail is composed by utilizing any object (received object) included in an incoming mail. Thereafter, the return mail is structured in a format for a multi-media E-mail including every object included in the return mail exclusive of the already-utilized object(s) and control information indicating how the objects in the return mail are temporally and/or spatially positioned, and then is transmitted to a computer system from which the incoming mail was transmitted.

Multi-media E-mail system and device for transmitting a composed return E-mail

Picture quality loss is minimized and buffer underflow and overflow are prevented when extracting and recombining a plurality of consecutive scenes from an MPEG stream. The smallest number of pictures (equivalent at most to 1 second) that must be re-encoded so that the scene can be independently reproduced is detected to identify the re-encoding target picture. Then the picture type (I, P, B) after the pictures are re-encoded is determined. Buffer fullness is calculated, and the code allocation to the re-encoding range is calculated from buffer fullness and target picture count. The code allocation to each target picture is then calculated, and the target pictures are re-encoded and connected.

Video editing apparatus, video editing method, and data storage medium for a video editing program

A learning-support device offers a sufficient learning effect even in a field of learning that sets its goal on mastering a motion itself. A question-screen display part displays a question-screen composed of a question and moving images as choices for an answer. A selection reception part receives a user-selection indicating which of the moving images on the question-screen is selected by a user. A correct/incorrect determination part determines whether the user-selection is correct or incorrect. When the user-selection is determined as correct, a correct-answer-explanation-screen display part displays a correct-answer-explanation-screen including an explanation for the correct answer and the correct moving image. When the user-selection is determined as incorrect, an incorrect-answer-explanation-screen display part displays an incorrect-answer-explanation-screen including an explanation for the incorrect answer and the correct moving image.

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Kasuya-gun, Japan

Yuichi Kawaguchi