摘要:
A communication control apparatus, communication terminal apparatus, server apparatus, and communication control method are provided that continue video and/or voice communication in a way that feels seamless to the user even when communication conditions change in a mobile environment. Newly introducing a lower layer management section that notifies an upper layer of lower layer information such as field intensity and network congestion into a conventional communication terminal apparatus, which is configured in such a way that this lower layer information is concealed from the application, enables the connection control section that provides the application's service generation environment to recognize lower layer information directly, and makes possible various kinds of status determination and control changes based on lower layer information at the application level.
摘要:
A communication control apparatus, communication terminal apparatus, server apparatus, and communication control method are provided that continue video and/or voice communication in a way that feels seamless to the user even when communication conditions change in a mobile environment. Newly introducing a lower layer management section that notifies an upper layer of lower layer information such as field intensity and network congestion into a conventional communication terminal apparatus, which is configured in such a way that this lower layer information is concealed from the application, enables the connection control section that provides the application's service generation environment to recognize lower layer information directly, and makes possible various kinds of status determination and control changes based on lower layer information at the application level.
摘要:
A wireless communication device is quickly connectable to an access point of a destination service area without wasting power when the wireless communication device moves from a service area to a different one. When a state change detector of the wireless communication device detects that the received radio field intensity of the radio wave from the connected access point lowers to a threshold or less, a service area information acquirer acquires information on the service area where the wireless communication device is present and information on a neighboring service area. A profile information acquirer acquires profile information corresponding to the service area information. A priority order setter sets the order of priority to the acquired profile information in such a way that the access point of a neighboring service area neighboring to the service area formed by the connected access point is precedingly connected. According to the profile information to which orders of priority are set, a request for connection to the access point is made.
摘要:
This electrical power-receiving apparatus makes it possible to suppress a decline in power supply efficiency in a variety of different circumstances while avoiding an increase in circuit scale. This apparatus comprises an impedance control unit (307) for sequentially switching through any one of a plurality of charging devices in a charging device group (310), as candidate charging devices for a supply destination to which electrical power is to be supplied. The impedance control unit (307) also selects from the candidates a charging device to which electrical power is actually supplied, on the basis of the difference between the impedance of the charging device group (310) for each candidate and the impedance of an electrical power receiving antenna unit (301), and causes electrical power to be supplied to the selected charging device.
摘要:
A terminal (101) includes interfaces for communication with a mobile network (102) and a wireless LAN (103). A first IMS server (107) performs IMS call control processing relating to terminals located in the mobile network (102) and a second IMS server (111) relays a signal relating to IMS call control processing concerning terminals located in the wireless LAN (103). These IMS servers search for a mobile network packet gateway (106), a packet data gateway (110), and a gateway to be controlled by a route change request for requesting change of a packet transmission path and relay the route change request. The route change request provided from the terminal (101) is relayed by the IMS servers to provide the change request to all networks specified. The packet transmission path is changed by the gateway in accordance with the request. Thus, the terminal having the interfaces for both of the mobile communication network and the wireless LAN can select a network to use for each communication port.
摘要:
It is possible to provide an encryption device, a decryption device, an encryption method, and a decryption method capable of effectively performing encryption and decryption by using the packet type judgment result. An encryption/decryption device (100) includes: a packet reception unit (111) which acquires a packet; an encryption engine (125) which is formed by hardware and encrypts or decrypts a packet; an encryption engine (115) which encrypts or decrypts a packet by using software; a head data identification unit (117) which judges the real time feature of the acquired packet according to the header information on the acquired packet; and an encryption/decryption process judgment unit (112) decides the acquired packet encryption destination or decryption destination in accordance with the real time feature from an encryption engine (125) and the encryption engine (115). Since it is possible to separate the encryption by hardware from encryption by hardware according to the packet real time feature, it is possible to effectively perform encryption and decryption.
摘要:
A wireless communication device quickly connectable to an access point of a destination service area without wasting power when the wireless communication device moves from a service area to a different one. When a state change detecting section (203) of the wireless communication device detects that the received radio field intensity of the radio wave from the connected access point lowers to a threshold or less, a service area information acquiring section (204) acquires information on the service area where the wireless communication device is present and information on a neighboring service area. A profile information acquiring section (206) acquires profile information corresponding to the service area information. A priority order setting section (211) sets the order of priority to the acquired profile information in such a way that the access point of a neighboring service area neighboring to the service area formed by the connected access point is precedingly connected. According to the profile information to which orders of priority are set, a request for connection to the access point is made.
摘要:
The invention provides a television meeting unit that is capable of displaying a picture smoothly on a middle participation terminal. To realize such television meeting unit, the multicast meeting unit is provided with a picture coding means for coding an input picture, a picture transmission means for transmitting the coded picture by mean of multicast, a picture receiving means for receiving the transmitted coded picture, a picture decoding means for decoding the received picture, a picture display means for displaying the decoded picture, a middle participation notice means for notifying middle participation in a meeting, and a middle participation terminal detection means for detecting the middle participation notice and for transmitting it to the picture coding means. The picture coding means, upon receiving the middle participation notice from the middle participation terminal detection means, changes the coding format to the in-frame coding format.
摘要:
A transport header analyzing unit (133) analyzes, on the basis of the TCP header of transport data transmitted from a transmitter terminal (100) to a receiver terminal (200), whether the transport data is an acknowledgement response in a TCP communication. If the transport data is not an acknowledgement response, a synchronization pre-processing unit (134) determines, on the basis of the TCP header of the transport data, whether synchronization information, which is required to operate in a power saving mode together with an access point (300), is added to the IP header of the transport data. A synchronization information processing unit (235) adds, to the IP header of the transport data indicating an acknowledgement response to received data that is received from the transmitter terminal (100), the synchronization information that is required to operate in the power saving mode together with the access point (300).
摘要:
A portable terminal wherein the amount of processing and power consumption when performing repair is reduced and video data can be reliably repaired, and video data repair method and program of the same. The portable terminal (110) is provided with a video data repair unit (117) that repairs video data in which video is poor by replacing it with a portion of video data acquired externally, said video data repair unit (117) saving, instead of deleting at the time of repairing, the blocks that are necessary for decoding the video data continuing after the video data that is to be repaired, and performing control so that only the portion of the video data that is repaired is reencoded.