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    • 1. 发明授权
    • Noise removing device and data communication apparatus using the same
    • 噪声去除装置及使用其的数据通信装置
    • US5684830A
    • 1997-11-04
    • US326277
    • 1994-10-20
    • Yuji IchikawaKatsuya NakagawaAkira ImaiHiroshi Uno
    • Yuji IchikawaKatsuya NakagawaAkira ImaiHiroshi Uno
    • H04B15/00H04B1/10H04L27/06H04B14/04
    • H04B1/10
    • The noise removing device is used in a data communication system utilizing a transmitting signal modulated by a data signal to be transmitted. The noise removing device includes a receiving section for receiving the transmitting signal, and converting it into an electric signal, so as to supply an input signal, an analog signal processing circuit for selectively passing the input signal in a first frequency range including a carrier frequency of the transmitting signal, thereby removing a first noise, for converting the passed signal into a digital signal, and for outputting the digital signal, and a digital signal processing circuit for sampling the digital signal, and for selectively passing the digital signal in a second frequency range including the carrier frequency based on a result of comparison of a pattern obtained by the sampling with a predetermined pattern, thereby removing a second noise.
    • 噪声去除装置用于利用被发送的数据信号调制的发送信号的数据通信系统。 噪声去除装置包括:接收部分,用于接收发送信号,并将其转换为电信号,以便提供输入信号;模拟信号处理电路,用于选择性地将输入信号传送到包括载波频率的第一频率范围 ,从而去除第一噪声,用于将传递的信号转换为数字信号,并输出数字信号;以及数字信号处理电路,用于对数字信号进行采样,并且用于在第二噪声中选择性地传递数字信号 基于通过采样获得的图案与预定图案的比较结果的载波频率的频率范围,从而去除第二噪声。
    • 2. 发明授权
    • Communication apparatus automatically selecting one of two operation
modes
    • 通信设备自动选择两种操作模式之一
    • US5585952A
    • 1996-12-17
    • US471757
    • 1995-06-06
    • Akira ImaiYuji IchikawaKaoru HiedaMasahiko Tsukamoto
    • Akira ImaiYuji IchikawaKaoru HiedaMasahiko Tsukamoto
    • H04L27/04H04B10/11H04B10/114H04B10/524H04B10/54H04L29/06H04J14/08
    • H04L29/06H04L69/18H04L69/24
    • A communication apparatus includes a memory. The memory stores the protocol of an ASK system and the protocol of an IrDA system. These protocols require predetermined time periods of T1 and T2 prior to establishing a connection with a station of the other party. The memory further stores time periods of Ra, Rb, Sa, and Sb, where the relationship of (Ra+Rb).noteq.(Sa+Sb), Sa>T1, Sb>T2, Rb>T2 is established. The communication apparatus further includes a transmission circuit and a reception circuit for the ASK system, a transmission circuit and a reception circuit for the IrDA system, a timer, and a control circuit. The control circuit controls the transmission circuit, the reception circuit, and the timer while referring to the stored contents of the memory. The control circuit carries out a "handshaking" procedure with the station of the other party, alternately trying the ASK protocol and the IrDA protocol until it is determined which of the two protocols the two stations have in common, and setting a flag signal to select the fastest transmission protocol which the two stations have in common. The selected protocol is thereafter used for communication between the two stations.
    • 通信装置包括存储器。 存储器存储ASK系统的协议和IrDA系统的协议。 在与另一方的站建立连接之前,这些协议需要T1和T2的预定时间段。 存储器还存储着(Ra + Rb)NOTEQUAL(Sa + Sb),Sa> T1,Sb> T2,Rb> T2的关系的Ra,Rb,Sa和Sb的时间周期。 通信装置还包括用于ASK系统的发送电路和接收电路,用于IrDA系统的发送电路和接收电路,定时器和控制电路。 参考存储器的存储内容,控制电路控制发送电路,接收电路和定时器。 控制电路与另一方的电台进行“握手”过程,交替尝试ASK协议和IrDA协议,直到确定两个电台共同的两个协议中的哪一个,并设置一个标志信号来选择 这两个站是共同的最快的传输协议。 所选择的协议随后用于两个站之间的通信。
    • 3. 发明授权
    • Apparatus and method for data communication including establishing communication using tone signal
    • 用于数据通信的装置和方法,包括使用音调信号建立通信
    • US07394771B2
    • 2008-07-01
    • US10271585
    • 2002-10-17
    • Daisuke NakanoKazuyuki SumiTakashi NishimuraYuji IchikawaFumihiro Fukae
    • Daisuke NakanoKazuyuki SumiTakashi NishimuraYuji IchikawaFumihiro Fukae
    • H04L12/28H04B10/24
    • H04B10/2503H04B10/0771H04B2210/075
    • In optical two-way communication using a single optical fiber, part of the light transmitted from an apparatus is received as stray light by the apparatus itself. This occasionally hampers accurate detection of disconnection from the partner apparatus and of the start of data communication by the partner apparatus after the establishment of connection. To overcome this, the timing with which an apparatus transmits a tone signal after the establishment of connection is compared with the timing with which the apparatus receives a tone signal from the partner apparatus, and the two apparatuses use different sets of data transmission properties (for example, different wavelengths) to accurately detect disconnection. Moreover, based on the properties of the received light and the characteristics of the receiving amplifier, repetition of the same code for longer than a predetermined period is detected to accurately detect disconnection. Furthermore, in response to a request for data communication after the establishment of connection, a tone signal having a different pattern from that used to establish connection is used to accurately detect the start of data communication.
    • 在使用单个光纤的光学双向通信中,从设备发射的光的一部分被设备本身作为杂散光接收。 偶尔会妨碍对方设备断开连接的准确检测,以及对方设备建立连接后的数据通信开始。 为了克服这个原因,将在连接建立之后将设备发送音调信号的定时与设备从对方设备接收到音调信号的定时进行比较,并且两个设备使用不同的数据传输属性集(对于 例如,不同的波长)以精确地检测断开连接。 此外,基于接收光的特性和接收放大器的特性,检测出长于预定周期的相同代码的重复以精确地检测断开。 此外,响应于在建立连接之后的数据通信请求,使用具有与用于建立连接的模式不同的模式的音调信号来精确地检测数据通信的开始。
    • 4. 发明申请
    • Coaxial cable distributor
    • 同轴电缆分配器
    • US20060211303A1
    • 2006-09-21
    • US10545558
    • 2003-07-14
    • Makoto KodairaJun KimuraYuji Ichikawa
    • Makoto KodairaJun KimuraYuji Ichikawa
    • H01R9/05
    • H01R24/547H01R9/0506H01R2107/00
    • A coaxial cable distributor, wherein three or more junction plugs (2) are fitted to the surface of a casing (1) having a hollow therein, the external contacts of the junction plugs (2) are electrically connected to each other through the casing (1), the center contacts of the junction plugs (2) are electrically connected to each other in the hollow of the casing (1), and at least two of the junction plugs (2) are rotated about the rotating axis in a direction orthogonal to the projected direction thereof from the surface of the casing (1) while maintaining the electrical connection between the external contacts and between the center contacts.
    • 一种同轴电缆分配器,其中三个或更多个连接插头(2)安装在其中具有中空的壳体(1)的表面上,结合插头(2)的外部触头通过壳体( 如图1所示,接合插头(2)的中心触点在壳体(1)的中空部彼此电连接,并且至少两个连接插头(2)沿着正交的方向绕旋转轴线旋转 在保持外部触点之间和中心触点之间的电连接的同时从壳体(1)的表面向其突出方向移动。
    • 5. 发明授权
    • Transmitting and receiving circuit and transmitting and receiving method
    • 发射和接收电路和发射和接收方法
    • US07177283B2
    • 2007-02-13
    • US10157863
    • 2002-05-31
    • Fumihiro FukaeYuji Ichikawa
    • Fumihiro FukaeYuji Ichikawa
    • H04L12/26
    • H04L5/1446Y02D50/10
    • A transmitting and receiving circuit includes an optical circuit for transmitting and receiving data from and to a facing node, and a speed negotiation state machine for executing a speed negotiation to find a maximum value of a data transfer speed in a channel between nodes before data transfer to the facing node, and setting the thus obtained maximum value as a maximum transfer speed of each transceiver. With this, the speed negotiation is executed with the facing node for each transceiver before data transfer, and the transfer speed of the node is determined by the result of the speed negotiation, so that it is possible to provide a transmitting and receiving circuit and a transmitting and receiving method such that data transfer becomes possible even in a channel of poor quality.
    • 发送和接收电路包括用于从面向节点发送和接收数据的光电路,以及用于执行速度协商以在数据传送之前的节点之间的信道中找到数据传输速度的最大值的速度协商状态机 并将如此获得的最大值设置为每个收发器的最大传送速度。 由此,在数据传送之前,对于每个收发器的面向节点执行速度协商,并且由速度协商的结果确定节点的传送速度,从而可以提供发送和接收电路和 发送和接收方法,即使在质量差的信道中也可能进行数据传送。
    • 9. 发明授权
    • Coaxial cable distributor
    • 同轴电缆分配器
    • US07374427B2
    • 2008-05-20
    • US10545558
    • 2003-07-14
    • Makoto KodairaJun KimuraYuji Ichikawa
    • Makoto KodairaJun KimuraYuji Ichikawa
    • H01R12/00
    • H01R24/547H01R9/0506H01R2107/00
    • A coaxial cable distributor, wherein three or more junction plugs (2) are fitted to the surface of a casing (1) having a hollow therein, the external contacts of the junction plugs (2) are electrically connected to each other through the casing (1), the center contacts of the junction plugs (2) are electrically connected to each other in the hollow of the casing (1), and at least two of the junction plugs (2) are rotated about the rotating axis in a direction orthogonal to the projected direction thereof from the surface of the casing (1) while maintaining the electrical connection between the external contacts and between the center contacts.
    • 一种同轴电缆分配器,其中三个或更多个连接插头(2)安装在其中具有中空的壳体(1)的表面上,结合插头(2)的外部触头通过壳体( 如图1所示,接合插头(2)的中心触点在壳体(1)的中空部彼此电连接,并且至少两个连接插头(2)沿着正交的方向绕旋转轴线旋转 在保持外部触点之间和中心触点之间的电连接的同时从壳体(1)的表面向其突出方向移动。
    • 10. 发明申请
    • Data distribution device capable of distributing a content
    • 能够分发内容的数据分发装置
    • US20060075459A1
    • 2006-04-06
    • US10530348
    • 2003-07-11
    • Yuji Ichikawa
    • Yuji Ichikawa
    • H04N7/16H04N7/173
    • H04L65/4076H04L12/18H04L45/16
    • When a distribution apparatus receives a distribution request packet from a new reception apparatus while distributing contents to a multicast address, the distribution apparatus transmits in return a distribution acceptance packet including the multicast address under the distribution. Then, receiving a packet of contents in multicast form from the distribution apparatus, the reception apparatus transmits to the distribution apparatus a request for distributed data that includes the serial number of the firstly-received packet as well as a buffer size necessary for starting reproduction. The distribution apparatus then reads necessary packets from a distributed data buffer to transmit to the reception apparatus the distributed data in descending order from the serial number 51 in intervals of the multicast distribution.
    • 当分配装置在将内容分发到多播地址的同时从新的接收装置接收到分发请求分组时,分配装置返回发送包括分发下的多播地址的分发接受分组。 然后,从分发装置接收组播形式的内容分组,接收装置向分发装置发送包含首次接收分组的序列号的分散数据的请求以及开始再现所需的缓冲器大小。 分配装置然后从分布式数据缓冲器中读取必要的分组,以从组播分发的间隔开始以序列号51的顺序向接收装置发送分布式数据。