公开(公告)号：US20060067344A1

公开(公告)日：2006-03-30

申请号：US11241409

申请日：2005-09-30

申请人： Kiyoshi Sakurai

发明人： Kiyoshi Sakurai

IPC分类号： H04L12/56

CPC分类号： H04L12/2854

摘要： In data communication utilizing amateur radio, communication via Internet can be performed. A radio terminal belonging to an internal network can communicate with a radio terminal belonging to another internal network via the Internet. Each radio terminal has a callsign, and a gateway has a global IP address and a table which associates each radio terminal with the global IP address of a corresponding gateway. When receiving from a radio terminal, information addressed to a radio terminal in another internal network, the gateway sends the received information to the Internet by addressing it to the global IP address of the gateway of the internal network to which the destination radio terminal 33 belongs with reference to the table. When receiving information from the Internet, the gateway sends the received information to a radio terminal specified by the callsign of a receiver.

摘要翻译： 在使用业余无线电的数据通信中，可以进行通过因特网的通信。

公开(公告)号：US5856934A

公开(公告)日：1999-01-05

申请号：US827407

申请日：1997-03-27

申请人： Michio Nakajima ,  Weimin Sun

发明人： Michio Nakajima ,  Weimin Sun

IPC分类号： H03H17/02 ,  G06F17/10

CPC分类号： H03H17/0294

摘要： Constants {P.sub.b00i, Q.sub.b00j, . . . , P.sub.ak2i, Q.sub.ak2j, P.sub.ci, Q.sub.cj, P.sub.di, and Q.sub.dj } for calculating each of filter coefficients {a.sub.k1, a.sub.k2, b.sub.00, b.sub.k1, b.sub.k2, c and d} for a digital filter 15 by using non-linear polynomials for pass band position data x and pass band width data y are stored in a memory 13. The constants {P.sub.b00i, Q.sub.b00j, . . . , P.sub.ak2i, Q.sub.ak2j, P.sub.ci, Q.sub.cj, P.sub.di, and Q.sub.dj } are determined by using the least square method so that the sum of the square of the errors between the filter coefficients calculated by using non-liner polynomials and the filter coefficients of digital filter having known characteristics becomes the least or the minimum. A CPU 11 calculates the filter coefficients non-linearly by using the constants stored in the memory 13, and sets the results to the digital filter 15 when new pass band position data x or pass band width data y is input at knobs SC and SW.

摘要翻译： 常数{Pb00i，Qb00j，。 。 。 ，Pak2i，Qak2j，Pci，Qcj，Pdi和Qdj}，用于通过使用用于通带位置的非线性多项式来计算数字滤波器15的滤波器系数{ak1，ak2，b00，bk1，bk2，c和d} 数据x和通带宽度数据y存储在存储器13中。常数{Pb00i，Qb00j，...， 。 。 ，Pak2i，Qak2j，Pci，Qcj，Pdi和Qdj}通过使用最小二乘法确定，使得通过使用非线性多项式计算的滤波器系数与数字滤波器的滤波器系数之间的误差的平方和之和 已知特征变得最小或最小。 CPU 11通过使用存储在存储器13中的常数非线性地计算滤波器系数，并且当在通过旋钮SC和SW处输入新的通带位置数据x或通带宽度数据y时，将结果设置为数字滤波器15。

公开(公告)号：US5691929A

公开(公告)日：1997-11-25

申请号：US754583

申请日：1996-11-21

申请人： Weimin Sun

发明人： Weimin Sun

IPC分类号： H03H17/08 ,  G06F17/10

CPC分类号： H03H17/08

摘要： A 90-degree digital phase shift network includes at least two all-pass digital filters which have a phase difference of 90 degrees therebetween. These digital filters are adapted to receive the same signal. Each of the all-pass digital filters has phase characteristics .theta. (.omega.) given by ##EQU1## where T represents a sampling period, P.sub.i a real number indicative of a filter coefficient, .omega. the angular frequency, m a weight variable, n'=n/2 (n=even number), n'=(n+1)/2 (n=odd number), n an order of a 90-degree digital PSN, m being a positive value other than 1, and satisfying .vertline.2m.omega..vertline. / .vertline.P.sub.i .vertline.

摘要翻译： 90度数字相移网络包括至少两个在其间具有90度相位差的全通数字滤波器。 这些数字滤波器适于接收相同的信号。 每个全通数字滤波器具有由给出的相位特性theta（ω），其中T表示采样周期，Pi表示滤波器系数的实数，ω是角频率，ma权重变量，n'= n / 2（n =偶数），n'=（n + 1）/ 2（n =奇数），n为90度数字PSN的顺序，m为除1以外的正值，满足| 2m 欧米茄| 当|ω足够小于1时，| | Pi | <1，同时满足|-Piω2T| 当omega T基本上等于pi时，/ 2m <1。

公开(公告)号：US20240357673A1

公开(公告)日：2024-10-24

申请号：US18620234

申请日：2024-03-28

申请人： Icom Incorporated

发明人： Remito Ishida ,  Yasuhiro Nishiguchi ,  Kosuke Yabumoto

IPC分类号： H04W76/11 ,  H04W72/56

CPC分类号： H04W76/11 ,  H04W72/56

摘要： A radio device includes: a plurality of operation terminals each of which is provided with a unique ID and each of which is configured to perform an operation related to a task for digital selective calling (DSC) communication; an ID changing section configured to, when one of the plurality of operation terminals is selected, (i) change the ID of the operation terminal selected to a high-priority ID indicating that the operation terminal selected is allowed to preferentially perform the DSC operation and (ii) change the IDs of the other operation terminals unselected among the plurality of operation terminals to non-high-priority identifiers other than the high-priority ID; and an execution section configured to accept an operation performed by the operation terminal provided with the high-priority ID and execute the task.

公开(公告)号：US11777999B2

公开(公告)日：2023-10-03

申请号：US17438453

申请日：2020-01-23

申请人： ICOM INCORPORATED

发明人： Akira Nakano

IPC分类号： H04M1/24 ,  H04M3/08 ,  H04M3/22 ,  H04L65/1046 ,  H04L41/0668 ,  H04L43/0811 ,  H04L65/1069

CPC分类号： H04L65/1046 ,  H04L41/0668 ,  H04L43/0811 ,  H04L65/1069

摘要： Provided is a server system robust against a communication path failure. A first server system 2-1 and a second server system 2-2 are respectively installed on a first network 3-1 and a second network 3-2 provided by common carriers different from each other. The first and second server systems are connected to each other by a dedicated line 6. Even when a failure occurs in the first network, communication through the second network can be maintained, and even when a failure occurs in the second network, communication through the first network can be maintained. Further, when a failure occurs in the dedicated line, operations can be performed within each of the first and second networks in a degeneracy mode.

公开(公告)号：US11665503B2

公开(公告)日：2023-05-30

申请号：US17522243

申请日：2021-11-09

申请人： Icom Incorporated

发明人： Yoshio Sekiyama

IPC分类号： H04W4/021 ,  H04W4/029

CPC分类号： H04W4/022 ,  H04W4/029

摘要： A communication device includes: a display section; an AIS receiving section configured to receive automatic identification system (AIS) information; a list creating section configured to create, based on the AIS information about vessels existing in the vicinity of the communication device, a proximity order list in which pieces of specific information for identifying the vessels are arranged in increasing order of proximity to the communication device; and a display control section configured to, when the submersion of the communication device has been detected, control the display section so that the display section displays the proximity order list and so that any one of the pieces of specific information at the top of the proximity order list is in a selected state.

公开(公告)号：USD978100S1

公开(公告)日：2023-02-14

申请号：US29773174

申请日：2021-03-08

申请人： ICOM INCORPORATED

设计人： Haruki Nishizawa

公开(公告)号：US20220240188A1

公开(公告)日：2022-07-28

申请号：US17558760

申请日：2021-12-22

申请人： ICOM INCORPORATED

发明人： Yukihiro Tokuyama ,  Yasuhiro Nishiguchi ,  Kosuke Yabumoto

IPC分类号： H04W52/02 ,  H04L1/00

摘要： A wireless system includes a control device and a wireless communication device. The control device switches between a control-side access point mode and a control-side station mode. In the control-side access point mode, the control device receives a connection request from the wireless communication device to establish a connection and, in the control-side station mode sends a connection request to the wireless communication device to establish a connection. The control device sends a sleep command or a wake-up command to the wireless communication device with which the connection is established.

公开(公告)号：USD958100S1

公开(公告)日：2022-07-19

申请号：US29688073

申请日：2019-04-18

申请人： ICOM INCORPORATED

设计人： Masashi Nakagawa

公开(公告)号：US20220159572A1

公开(公告)日：2022-05-19

申请号：US17514240

申请日：2021-10-29

申请人： Icom Incorporated

发明人： Yoshio Sekiyama

IPC分类号： H04W52/02

摘要： A communication device that reduces power consumption is realized by appropriately setting a transmission output power value for DSC communication. A communication device (1) includes: an AIS receiving section (11) for receiving information related to an AIS; a DSC communication section (12) for performing DSC communication; and a transmission output power setting section (15c) configured to set a transmission output power value for communication performed on a conversation channel by the DSC communication section to a value corresponding to a distance, which is calculated based on the information, between the communication device and a communication target vessel.