Abstract: A method for manufacturing a forged article, capable of improving the durability of a die for forging is provided. The method, includes forging a steel material, by using a die, by spraying or applying a water-soluble polymer lubricant containing 0.01 to 0.98 mass % of a water-soluble sulfate onto a working surface of the die, the die being made of a raw material having a constituent composition of by mass %, of 0.4 to 0.7% of C, 1.0% or less of Si, 1.0% or less of Mn, 4.0 to 6.0% of Cr, 2.0 to 4.0% of (Mo+½W), 0.5 to 2.5% of (V+Nb), 0 to 1.0% of Ni, 0 to 5.0% of Co, 0.02% or less of N, and a remnant composed of Fe and impurities, and having hardness of 55 to 60 HRC, and the die including a nitrided layer or a nitrosulfidized layer on the working surface thereof.

Abstract: The present invention provides steel foil for battery containers, the steel foil being characterized in that the maximum value of the maximum principal strain in uniaxial deformation is not less than 0.25 and the maximum value of the maximum principal strain in planar strain deformation is not less than 0.1. The present invention is able to provide steel foil for battery containers that is capable of restraining cracking of a base material when subjected to a severe forming process for battery containers.

Abstract: A communication device establishes multiple wireless links which are used in wireless communication compliant with an IEEE 802.11 series standard and which are used in data communication with a partner device. The communication device collects, from the partner device, power saving information related to power saving operations that respectively correspond to the multiple wireless links and that are performed in the partner device, before a start of frame exchange for a next data communication with the partner device, and using a wireless link, among the multiple wireless links, that is in the enabled state.

Abstract: A communication apparatus transmits a radio frame complying with an IEEE802.11 standard series to another communication apparatus, or receives the radio frame from the other communication apparatus. Here, a MAC (Media Access Control) frame of the radio frame includes information concerning scheduling of transmission opportunities in which contention is restricted based on a time.

Abstract: There is provided a communication apparatus comprising: one or more processors; and one or more memories storing instructions that, when executed by the one or more processors, cause the communication apparatus to: generate capability information about a method of a plurality of primary channels (M-PCH) compliant with the IEEE 802.11 series; and transmit a frame including the capability information to a communication partner apparatus, wherein the capability information includes at least one of information representing whether the plurality of communication apparatus supports the M-PCH method, and information representing availability of each of the primary channels.

Abstract: A method for manufacturing a forged article, capable of improving the durability of a die for forging is provided. The method, includes forging a steel material by using a die, by spraying or applying a water-soluble polymer lubricant containing 0.01 to 0.98 mass % of a water-soluble sulfate onto a working surface of the die, the die being made of a raw material having a constituent composition of by mass %, of 0.4 to 0.7% of C, 1.0% or less of Si, 1.0% or less of Mn, 4.0 to 6.0% of Cr, 2.0 to 4.0% of (Mo+½W), 0.5 to 2.5% of (V+Nb), 0 to 1.0% of Ni, 0 to 5.0% of Co, 0.02% or less of N, and a remnant composed of Fe and impurities, and having hardness of 55 to 60 HRC, and the die including a nitrided layer or a nitrosulfidized layer on the working surface thereof.

Abstract: A communication apparatus, comprising: first and second communication units; third communication unit for performing a communication of data, wherein the second communication unit performs a predetermined communication for activating the third communication unit and has a communication speed slower than and a power consumption less than the third communication unit, wherein the first communication unit has a communication range shorter than the third and second communication unit; reception unit for, if a communication with a communication partner apparatus is initiated by the first communication unit, receiving information relating to the communication partner apparatus by the first communication unit; and selection unit for, based on the received information, selecting whether to initiate data communication by the third or second communication unit.

Abstract: A communication apparatus, comprising: first and second communication units; third communication unit for performing a communication of data, wherein the second communication unit performs a predetermined communication for activating the third communication unit and has a communication speed slower than and a power consumption less than the third communication unit, wherein the first communication unit has a communication range shorter than the third and second communication unit; reception unit for, if a communication with a communication partner apparatus is initiated by the first communication unit, receiving information relating to the communication partner apparatus by the first communication unit; and selection unit for, based on the received information, selecting whether to initiate data communication by the third or second communication unit.

Abstract: A communication apparatus, comprising: first and second communication units; third communication unit for performing a communication of data, wherein the second communication unit performs a predetermined communication for activating the third communication unit and has a communication speed slower than and a power consumption less than the third communication unit, wherein the first communication unit has a communication range shorter than the third and second communication unit; reception unit for, if a communication with a communication partner apparatus is initiated by the first communication unit, receiving information relating to the communication partner apparatus by the first communication unit; and selection unit for, based on the received information, selecting whether to initiate data communication by the third or second communication unit.

Abstract: This invention allows connection of an apparatus with a low security level without lowering the security level of a network even when such apparatus issues a connection request. This invention is directed to an access point which makes wireless communications with a station using an encryption method (AES). Upon reception of a connection request message including information indicating an encryption method (WEP) that can be used by a station, the access point checks if the encryption method (WEP) recognized based on the received connection request message is different from the encryption method (AES). When it is determined that the two encryption methods are different, the access point launches a controller which makes wireless communications with the station using that encryption method (WEP).

Abstract: A communication apparatus, comprising: first and second communication units; third communication unit for performing a communication of data, wherein the second communication unit performs a predetermined communication for activating the third communication unit and has a communication speed slower than and a power consumption less than the third communication unit, wherein the first communication unit has a communication range shorter than the third and second communication unit; reception unit for, if a communication with a communication partner apparatus is initiated by the first communication unit, receiving information relating to the communication partner apparatus by the first communication unit; and selection unit for, based on the received information, selecting whether to initiate data communication by the third or second communication unit.

Abstract: A communication apparatus, comprising: first and second communication units; third communication unit for performing a communication of data, wherein the second communication unit performs a predetermined communication for activating the third communication unit and has a communication speed slower than and a power consumption less than the third communication unit, wherein the first communication unit has a communication range shorter than the third and second communication unit; reception unit for, if a communication with a communication partner apparatus is initiated by the first communication unit, receiving information relating to the communication partner apparatus by the first communication unit; and selection unit for, based on the received information, selecting whether to initiate data communication by the third or second communication unit.

Abstract: A communication apparatus, comprising: first and second communication units; third communication unit for performing a communication of data, wherein the second communication unit performs a predetermined communication for activating the third communication unit and has a communication speed slower than and a power consumption less than the third communication unit, wherein the first communication unit has a communication range shorter than the third and second communication unit; reception unit for, if a communication with a communication partner apparatus is initiated by the first communication unit, receiving information relating to the communication partner apparatus by the first communication unit; and selection unit for, based on the received information, selecting whether to initiate data communication by the third or second communication unit.

Abstract: A communication apparatus, acting as an access point, constructs a first network and communicates as a station on a second network constructed by another apparatus. The communication apparatus holds parameter information that defines a transmission interval of data. If communication channels of the second network and of the first network are in an interfering relationship and the communication status in the second network is a predetermined status, then the communication apparatus changes parameter information corresponding to any type of data in the held parameter information.

Abstract: This invention allows connection of an apparatus with a low security level without lowering the security level of a network even when such apparatus issues a connection request. This invention is directed to an access point which makes wireless communications with a station using an encryption method (AES). Upon reception of a connection request message including information indicating an encryption method (WEP) that can be used by a station, the access point checks if the encryption method (WEP) recognized based on the received connection request message is different from the encryption method (AES). When it is determined that the two encryption methods are different, the access point launches a controller which makes wireless communications with the station using that encryption method (WEP).

Abstract: This invention allows connection of an apparatus with a low security level without lowering the security level of a network even when such apparatus issues a connection request. This invention is directed to an access point which makes wireless communications with a station using an encryption method (AES). Upon reception of a connection request message including information indicating an encryption method (WEP) that can be used by a station, the access point checks if the encryption method (WEP) recognized based on the received connection request message is different from the encryption method (AES). When it is determined that the two encryption methods are different, the access point launches a controller which makes wireless communications with the station using that encryption method (WEP).

Abstract: The invention makes it possible to manage the wireless resources of each network even if network separation, disappearance, and recreation are repeated. The invention includes a management apparatus (104) which communicates with an AP (101) in the first network. The management apparatus (104) includes a reception unit which receives a message (M502) from some (111) of the communication apparatuses when some (111, 112) of a plurality of communication apparatuses form the second network, a management unit which manages information for forming the second network, and information on a network with which some (111, 112) of the communication apparatuses that have belonged to the second network should associate, and a transmission unit which transmits messages (M503, M505) containing the information for forming the second network to some (111, 112) of the communication apparatuses when the message (M502) is received.

Abstract: When an object file is to be transferred, a wireless communication device which supports a plurality of different protocols shortens a transfer time. The wireless communication device according to this invention includes a unit which receives object data, a unit which stores the received object data, and a unit which, when a predetermined amount of object data is stored, divides the object data into blocks, and transmits the object data to a wireless controller. The wireless communication device is characterized in that upon reception of the object data, the wireless controller monitors a reply interval of ACK to be replied, and changes, based on the reply interval, the amount of the object data to be stored.

Abstract: A management apparatus instructs a wireless terminal wirelessly connecting to a first base station to switch wireless connection to a second base station. After the wireless terminal switches the wireless connection to the second base station as instructed, the wireless terminal transmits a message for updating information used for determining a forwarding destination of the message received by the relay apparatus. The relay apparatus updates the information used for determining the forwarding destination of the received message based on the message transmitted from the wireless terminal.

Abstract: In order to identify a wireless device that is not under management in a wireless communication network, a management apparatus includes an acquisition unit configured to acquire information from the wireless terminal; a storage unit configured to correlate and store the wireless base station detected by the wireless terminal and a wireless terminal wirelessly connected to this wireless base station; a deriving unit configured to derive a wireless base station which does not have a wireless connection with a wireless terminal; a requesting unit configured to request a wireless terminal for transmission of data that has passed through this wireless base station; and a determination unit which, if requested data that has passed through the wireless base station from the wireless terminal has not been received, is configured to determine that this wireless base station is a wireless base station that is not under management.