摘要:
A wireless base station which controls joining of a plurality of wireless terminals to a wireless network, stores a maximum joining possible terminal number which indicates a maximum number of the wireless terminals of each terminal type that can join the wireless network simultaneously, and which is set in advance for each one of a plurality of terminal types that classify the wireless terminals, and a currently joining terminal number which indicates a number of the wireless terminals of each terminal type that are currently joining the wireless network, for each one of the plurality of the terminal types. Then, the wireless base station judges whether the joining of one wireless terminal of one terminal type which sent a request message to the wireless network is permitted or not, according to the maximum joining possible terminal number for the one terminal type and the currently joining terminal number stored for the one terminal type.
摘要:
An information-processing device includes a first interface configured to transmit content through a network to a first communication unit having a first unique identification, a second interface configured to receive a second unique identification allocated to a second communication unit, a first storage area configured to store the second unique identification through the second interface, a first judgment unit configured to determine whether the first unique identification received through the first interface is stored in the first storage area, a content supply unit configured to transmit the content to the first communication unit via the first interface when the first judgment unit determines that the first unique identification is stored in the first storage area, a second storage area configured to store a third unique identification allocated to a third communication unit during the content supply unit transmits the content and a management unit configured to delete all unique identifications from the first storage area and shift the third unique identification from the second storage area to the first storage area when the content supply unit has transmitted the content to the first communication unit completely.
摘要:
An image recording method includes: obtaining an image data; performing a predetermined process to the obtained image data; creating a print based on an output data obtained from the outputted image data through an LUT; and changing a density of a specific density area in the image on the print; wherein the creating the print includes changing a part of the LUT substantially according to a density change instruction corresponding to the changing the density.
摘要:
A non-contact identification semiconductor device is provided with a semiconductor chip including a receiving circuit that receives an inquiry to the non-contact identification semiconductor device, a memory that stores identification information of multiple bits and a sending circuit that sends the identification information. An antenna coupled to said semiconductor chip receives the identification information from said semiconductor chip and transmits the identification information outside of said non-contact semiconductor. The long side length of the semiconductor chip is not greater than 0.5 mm in plane dimension, and the identification information is stored by a pattern printed by an electron beam.
摘要:
Under a multi-task environment, a tamper resistant microprocessor saves a context information for one program whose execution is to be interrupted, where the context information contains information indicating an execution state of that one program and the execution code encryption key of that one program. An execution of that one program can be restarted by recovering the execution state of that one program from the saved context information. The context information can be encrypted by using the public key of the microprocessor, and then decrypted by using the secret key of the microprocessor.
摘要:
A scheme for realizing a contents protection procedure between devices that are not connected to the same network, in a system where the IEEE 1394 buses are connected together through a 1394 bridge or a system where the IEEE 1394 buses are connected together through another radio network, is disclosed. A network connection device notifies information regarding a transmission node on the first IEEE 1394 bus to a reception node on the second IEEE 1394 bus, so that the reception node can carry out the authentication and key exchange procedure directly with the transmission node on a different network.
摘要:
A communication node which can reliably transfer a packet with a payload including data having error resistance in radio environments is disclosed. A packet to be transmitted is divided into segments to form a plurality of packet segments. From among a plurality of error correction schemes that have been prepared in advance, the scheme to be employed is selected for each of the packet segments in accordance with predetermined criteria, and the selected error correction scheme is applied to each packet segment. Subsequently, the processed packet segment is transmitted to the network. Packet segments are received from the network. From among a plurality of error correction schemes prepared in advance, the scheme to be employed is selected for each of the received packet segments based on predetermined information contained in each received packet segment, and the selected error correction scheme is applied to the received packet segment. An original packet is formed from the plurality of processed packet segments.
摘要:
To provide a wireless tag having a wide band, a microstrip-line of a half wavelength type is used and an IC is built in between an antenna and a ground conductor, and a middle point of the antenna and the ground conductor are connected.
摘要:
A scheme for realizing communications through an external network such as telephone network from a contents processing device such as AV device or PC connected to a local network such as home network is disclosed. The contents processing device solicits a set up of connection to the server device through the telephone network, to a gateway device which is connected with both the home network and the telephone network. Then, the gateway device carries out a call set up with respect to a specified address on the telephone network, upon receiving the solicitation from the contents processing device, and transfers data transmitted from the contents processing device to a connection established by the call set up, and data arriving from the connection established by the call set up to the contents processing device.
摘要:
At a time of transmitting a packet from a node connected with one logical network to another logical network, a control message is transmitted to a network interconnection apparatus connecting the one logical network and the another logical network, when a new node is activated beyond the network interconnection apparatus, the control message including information for a registration in the network interconnection apparatus of a correspondence relationship between a first virtual path to be used in receiving a packet from the one logical network and a second virtual path to be used in transmitting the packet to the another logical network.