| Patent application number | Description | Published |
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| 20100296395 | PACKET TRANSMISSION SYSTEM, PACKET TRANSMISSION APPARATUS, AND PACKET TRANSMISSION METHOD - A first apparatus includes a sending unit which attaches a sequence number which is numbered for each priority of QoS set in a first packet, the sequence number is numbered for each priority of QoS set in the first packet, and sends the first packet with the sequence number. A second apparatus includes a storage unit which stores, for each priority, a history of sequence numbers attached to packets received, a determining unit which receives the first packet from the first apparatus, identifies the sequence number of the first packet, and determines whether the first packet has been previously received by comparing the identified sequence number with the history of sequence numbers according to the priority of QoS set in the first packet stored in the storage unit, and a unit which discards, when the determining unit determines the first packet has been previously received, the first packet. | 11-25-2010 |
| 20100303233 | PACKET TRANSMITTING AND RECEIVING APPARATUS AND PACKET TRANSMITTING AND RECEIVING METHOD - When being triggered by a call setting request that has been made, dummy information that is different from information to be transmitted and is information used for creating a path on which encrypted communication is to be performed is generated. The path on which the encrypted communication is to be performed is established by using the generated dummy information. A responding process of responding to the call setting request is performed after the path on which the encrypted communication is to be performed has been established. Thus, in the case where information that is obtained after the responding process of responding to the call setting request is encrypted and transmitted, it is possible to transmit the information while maintaining the real-time characteristics of the information to be transmitted. | 12-02-2010 |
| 20110211471 | PACKET TRANSMISSION METHOD AND NODES - This is a method for transmitting packets. The transmission method includes measuring a time taken for feedback indicating that a packet including context information has been lost; and switching between a first mode and a second mode based on the measured time taken for the feedback, the first mode being a mode for periodically transmitting a packet including the context information and the second mode being a mode for transmitting a packet including the context information in response to the feedback indicating that a packet including the context information has been lost. | 09-01-2011 |
| 20110228934 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A communication device includes: a first monitoring unit that monitors a first lifetime until a data amount transmitted through a first encryption communication path established between the communication device and another communication device exceeds a first threshold, a second monitoring unit that monitors a second lifetime until the data amount transmitted through the first encryption communication path exceeds a second threshold that is larger than the first threshold, a communication path establishing unit that establishes a second encryption communication path different from the first encryption communication path between the communication device and the another communication device when the first lifetime has expired, and a communication path deleting unit that deletes the first encryption communication path when the data amount transmitted through the second encryption communication path exceeds a remaining data amount of the second lifetime. | 09-22-2011 |
| 20110235634 | PACKET TRANSMITTING APPARATUS, PACKET RECEIVING APPARATUS, COMMUNICATION SYSTEM, AND PACKET COMMUNICATION METHOD - A packet transmitting apparatus | 09-29-2011 |
| 20110299386 | APPARATUS AND METHOD FOR SWITCHING BETWEEN REDUNDANT COMMUNICATION DEVICES - A packet is transmitted from a transmitting device to an active communication device which transmits a reception history identifying the received packets to the transmitting device. The transmitting device transmits an active-mode request message to a standby communication device when having failed to receive the reception history from the active communication device within a predetermined time period. Then, the standby communication device becomes a new active communication device, and the active communication device becomes an old active communication device. The new active communication device transmits to the transmitting device a switching request message for switching a destination of the packet from the old active communication device to the new active communication device. The transmitting device retransmits packets that have been transmitted from the transmitting device to the old active communication device and have failed to be received by the old active communication device, to the new active communication device. | 12-08-2011 |
| 20120082314 | MOBILE COMMUNICATION SYSTEM, COMMUNICATION CONTROL METHOD, AND RADIO BASE STATION - A system includes: a first radio base station including: a first processor which performs processes to transmit and receive a first encryption key, and an first interface which transmits or receives the encapsulated packet, the second radio base station includes: a second interface which transmits or receives the encapsulated packet; and a second processor which encrypts or decrypts the packet with the first encryption key, the host node includes: a third processor which encrypts or decrypts the packet, and during processing of a handover of the mobile station, the host node transmits the packet encrypted with the first encryption key to the first radio base station, the first radio base station transmits the packet to the second radio base station by the tunneling, and the second radio base station decapsulates the packet, decrypts the packet with the first encryption key, and then transmits the packet to the mobile station. | 04-05-2012 |
| 20120254611 | COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD - A communication apparatus includes a processor configured to determine whether a secure path has been established between the communication apparatus and a first communication apparatus, when communication apparatus transmits to the first communication apparatus, a command that causes execution of a given operation; an acquirer that acquires a transmission-side key having a given correspondence relation with a reception-side key that is acquired by the first communication apparatus; and a transmitter that transmits to the first communication apparatus a packet that includes the acquired transmission-side key and the command, if the processor has determined that the secure path has not been established. | 10-04-2012 |
| Patent application number | Description | Published |
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| 20080203558 | Method of semiconductor device protection, package of semiconductor device - A method for protecting a semiconductor device is disclosed that can improve reliability of a performance test for the semiconductor device and prevent damage to the semiconductor device during transportation or packaging for shipment. An IC cover is attached to the semiconductor device, which has height unevenness because it includes semiconductor chips and electric parts having different heights. The IC cover includes projecting portions and a base portion. After being attached to the semiconductor device, the projecting portions stand in a free area in the semiconductor device, and the base portion is supported by the projections to be separated from the semiconductor chips and electric parts in the semiconductor device. The IC cover is detachably attached to the semiconductor device. | 08-28-2008 |
| 20110049699 | METHOD OF SEMICONDUCTOR DEVICE PROTECTION, PACKAGE OF SEMICONDUCTOR DEVICE - A method for protecting a semiconductor device is disclosed that can improve reliability of a performance test for the semiconductor device and prevent damage to the semiconductor device during transportation or packaging for shipment. An IC cover is attached to the semiconductor device, which has height unevenness because it includes semiconductor chips and electric parts having different heights. The IC cover includes projecting portions and a base portion. After being attached to the semiconductor device, the projecting portions stand in a free area in the semiconductor device, and the base portion is supported by the projections to be separated from the semiconductor chips and electric parts in the semiconductor device. The IC cover is detachably attached to the semiconductor device. | 03-03-2011 |
| 20120005875 | METHOD OF SEMICONDUCTOR DEVICE PROTECTION - A method for protecting a semiconductor device is disclosed that can improve reliability of a performance test for the semiconductor device and prevent damage to the semiconductor device during transportation or packaging for shipment. An IC cover is attached to the semiconductor device, which has height unevenness because it includes semiconductor chips and electric parts having different heights. The IC cover includes projecting portions and a base portion. After being attached to the semiconductor device, the projecting portions stand in a free area in the semiconductor device, and the base portion is supported by the projections to be separated from the semiconductor chips and electric parts in the semiconductor device. The IC cover is detachably attached to the semiconductor device. | 01-12-2012 |
| Patent application number | Description | Published |
|---|
| 20100296395 | PACKET TRANSMISSION SYSTEM, PACKET TRANSMISSION APPARATUS, AND PACKET TRANSMISSION METHOD - A first apparatus includes a sending unit which attaches a sequence number which is numbered for each priority of QoS set in a first packet, the sequence number is numbered for each priority of QoS set in the first packet, and sends the first packet with the sequence number. A second apparatus includes a storage unit which stores, for each priority, a history of sequence numbers attached to packets received, a determining unit which receives the first packet from the first apparatus, identifies the sequence number of the first packet, and determines whether the first packet has been previously received by comparing the identified sequence number with the history of sequence numbers according to the priority of QoS set in the first packet stored in the storage unit, and a unit which discards, when the determining unit determines the first packet has been previously received, the first packet. | 11-25-2010 |
| 20100303233 | PACKET TRANSMITTING AND RECEIVING APPARATUS AND PACKET TRANSMITTING AND RECEIVING METHOD - When being triggered by a call setting request that has been made, dummy information that is different from information to be transmitted and is information used for creating a path on which encrypted communication is to be performed is generated. The path on which the encrypted communication is to be performed is established by using the generated dummy information. A responding process of responding to the call setting request is performed after the path on which the encrypted communication is to be performed has been established. Thus, in the case where information that is obtained after the responding process of responding to the call setting request is encrypted and transmitted, it is possible to transmit the information while maintaining the real-time characteristics of the information to be transmitted. | 12-02-2010 |
| 20110299386 | APPARATUS AND METHOD FOR SWITCHING BETWEEN REDUNDANT COMMUNICATION DEVICES - A packet is transmitted from a transmitting device to an active communication device which transmits a reception history identifying the received packets to the transmitting device. The transmitting device transmits an active-mode request message to a standby communication device when having failed to receive the reception history from the active communication device within a predetermined time period. Then, the standby communication device becomes a new active communication device, and the active communication device becomes an old active communication device. The new active communication device transmits to the transmitting device a switching request message for switching a destination of the packet from the old active communication device to the new active communication device. The transmitting device retransmits packets that have been transmitted from the transmitting device to the old active communication device and have failed to be received by the old active communication device, to the new active communication device. | 12-08-2011 |
