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公开(公告)号：EP1633071A3
公开(公告)日：2008-04-02
申请号：EP05106444.2
申请日：2005-07-14
CPC分类号： H04L1/1671 , H04L1/1628 , H04L1/1657 , H04L1/1887 , H04W28/06 , H04W84/12 , H04W88/08
摘要： A packet transmitting method and a packet transmitting apparatus in a wireless LAN capable of improving a maximum number of simultaneous calls without degrading a call quality are provided. A plurality of wireless terminals 2 are connected to a wireless LAN base station 1 through the wireless LAN. Data packets are transmitted from the wireless LAN base station 1 to the respective wireless terminals 2 in a signal form of frame burst packets without an ACK. A series of header information on the respective data packets are transmitted as notification packets in a signal form of multicast packets from the wireless LAN base station 1 to the wireless terminals 2. Data packets are individually transmitted from each of the wireless terminals 2 to the wireless LAN base station 1 by unicast using ACK. Each wireless terminal 2 transmits a retransmission request to the wireless LAN base station 1 requesting to retransmit an unreceived data packet among the frame packets notified by corresponding one of the notification packets. The wireless LAN base station 1 retransmits the packet corresponding to the retransmission request to the wireless terminal 2 that transmits the retransmission request by unicast using ACK.
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2.发明公开
公开(公告)号：EP0241945A3
公开(公告)日：1989-03-22
申请号：EP87105744.4
申请日：1987-04-16
发明人： Akizuki, Osamu , Kato, Takefumi
CPC分类号： H01J29/803
摘要： A cathode ray tube (10) of the type having a target (18), an electron gun (26) for emitting a beam of electrons toward the target, deflection means (40, 44) disposed between the target and the electron gun for deflecting the beam in two orthogonal directions, and a scan expansion lens system (46) disposed between the deflection means and the target for amplifying the deflections of the beam in both x- and y-axes directions. The lens system comprises two boxlike electrodes (50, 52) at least partly displaced from each other along the z axis. For higher deflection sensitivities of the scan expansion lens system (46) and the reduction of its axial dimension to a minimum, a pair of tongues (68,70; 68h, 70h) extend from either of the electrodes (50, 52) into the other, or two such pairs of tongues (68,70; 112,114) extend from both electrodes into interdigitating relation to each other. Upon application of prescribed potentials to the two electrodes, a quadrupolar lens field is created in the space between the pair of pairs of tongues for deflection amplification in both directions. On having been deflected vertically, the beam has its deflection amplified by having its traveling direction inverted with respect to the tube axis. The beam that has been deflected horizontally has its deflection magnified without having its traveling direction inverted.
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3.发明公开Cathode ray tube having an electron gun constructed for readay refocusing of the electron beam 失效Kathodenstrahlröhremit einer Elektronenkanone，die eine einfache Wiederfokussierung desElektronenbündelsgestattet。
公开(公告)号：EP0283941A2
公开(公告)日：1988-09-28
申请号：EP88104288.1
申请日：1988-03-17
CPC分类号： H01J29/62 , H01J31/121
摘要： A cathode ray tube comprises a series of quadrupolar lenses for focusing a beam of electrons, emitted from a cathode at one end of an evacuated envelope under the control of a control electrode, at a target screen at the other end of the envelope. After having been focused at the target by adjustment of electric potentials on the quadrupolar lenses, the electron beam will defocus upon change in a potential on the control electrode because then the crossover or initial focusing point of the electron beam will be displaced along the central axis of the envelope. With a view to ready refocusing of the beam at the target, a refocusing lens is provided between the crossover point and the quadrupolar lenses for providing a convering lens action of radial symmetry about the envelope axis. The beam can be refocused through adjustment of a single potential on the refocusing lens rather than through adjustment of several different potentials on the quadrupolar lenses.
摘要翻译： 阴极射线管包括一系列四极透镜，用于在外壳的另一端处的目标屏幕处将来自阴极的阴极射出的电子束在控制电极的控制下聚焦在真空外壳的一端。 在通过调节四极透镜上的电位来聚焦在目标上之后，电子束将在控制电极上的电位变化时散焦，因为电子束的交叉或初始聚焦点将沿着中心轴 的信封。 为了使目标处的光束准备好再聚焦，在交叉点和四极透镜之间提供重聚焦透镜，以提供围绕包络轴的径向对称的会聚透镜作用。 可以通过调整重聚焦透镜上的单个电位来重新聚焦光束，而不是通过调整四极透镜上的几个不同的电位。
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公开(公告)号：EP0214022A3
公开(公告)日：1988-03-09
申请号：EP86401736
申请日：1986-08-01
发明人： Igarashi, Yoshiaki , Ohtsuka, Hiroo , Hara, Osamu
IPC分类号： H01R13/11
CPC分类号： H01R13/112 , H01R13/113 , H01R13/193
摘要： A contact (30) for a connector, which includes two opposed contact elements (30 A, 30 B) for receiving therebetween a male contact (32) of a mating connector. Each the contact element is provided with one or more protusions (31 A, 31B) on an opposed surface for embracing the male contact (32). Protusions (31 A, 31 B) of the two opposed contact elements (30 A, 30 B) extend to that portions of the opposed contact elements (30 A, 30 B) which are devoid of the protusions (31 A, 31 B) so as to overlap each other before the male contact (32) is inserted between the contact elements (30 A, 30 B). With this arrangement, even if the male contact (32) is very thin, pressing force required to securely pressing the male contact (32) by the contact elements (30 A, 30 B) is certainly obtained. The contact (30) and the male contact (32) are securely contacted without any torsional force and other forces which would otherwise be caused on these contacts.
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6.发明授权
公开(公告)号：EP0241945B1
公开(公告)日：1993-01-20
申请号：EP87105744.4
申请日：1987-04-16
发明人： Akizuki, Osamu , Kato, Takefumi
CPC分类号： H01J29/803
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7.发明授权Scan converter storage tube with a multiple collector storage target, and method of operation 失效具有多个收集器存储目标的扫描转换器存储管及其操作方法
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8.发明公开Scan converter storage tube with a multiple collector storage target, and method of operation 失效与具有多个收集器的目标和它的操作方法Abtastspeicherröhre。
公开(公告)号：EP0111201A1
公开(公告)日：1984-06-20
申请号：EP83111624.9
申请日：1983-11-21
发明人： Takefumi, Kato
摘要： A scan converter storage tube has a storage target comprising at least two collector electrodes (52, 52') on a storage surface of a storage substrate (50). Each collector electrode has a multiplicity of parallel spaced strips (54, 54') which are electrically interconnected and which are arranged alternately with the strips of the other collector electrode, leaving exposed parts of the storage surface (58) through the spacings therebetween. The establishment of a potential difference between the collector electrodes makes it possible to write information on the storage target at a high rate without necessitating an increase in an erase potential difference between the collector electrodes and the storage surface. The dual collector storage target also allows writing with a zero erase potential difference, dispensing with the erase mode preparatory to writing. There are also disclosed herein storage targets having three and four collector electrodes respectively.
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公开(公告)号：EP1617600A1
公开(公告)日：2006-01-18
申请号：EP05015211.5
申请日：2005-07-13
发明人： Yamane, Koji
摘要： A terminal having an application function of intercommunicating with each of multiple access points is arranged within a wireless LAN system to transmit an interference amount measurement request of the access point to each of multiple access points. Each access point sends out a beacon of the access point and transmit the interference amount information involving the beacon receivable from the access point to the terminal. The terminal prioritizes each access point in the order in which a sum of signal strengths in the returned interference amount information is larger. Each access point automatically decides the use channel and starts an operation of the access point in accordance with a predetermined procedure.
摘要翻译： 具有与多个接入点中的每一个相互通信的应用功能的终端被布置在无线LAN系统内，以将接入点的干扰量测量请求发送到多个接入点中的每一个。 每个接入点发出接入点的信标，并将涉及可接收信标的干扰量信息从接入点发送到终端。 终端以返回的干扰量信息中的信号强度之和较大的顺序对每个接入点进行优先级排序。 每个接入点根据预定的过程自动地决定使用信道并开始接入点的操作。
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