-
公开(公告)号：JPH01277784A
公开(公告)日：1989-11-08
申请号：JP10551688
申请日：1988-04-30
Applicant: NEC CORP
Inventor： YAMANE TOSHINOBU , KURAMOTO AKIO , SHIMIZU TAKASHI , NAKAYAMA MAKOTO
Abstract: PURPOSE:To catch easily a wave source and further to prevent the false tracing due to a side lobe when a moving body goes out of a shield, by adding a reception intensity comparator to a beam scan tracing apparatus. CONSTITUTION:The level of a reception signal is detected by a reception intensity comparator 5, and when it lowers to a prescribed level or below, a signal (a) is outputted to give a command voltage to a servo amplifier 7 so as to rotate an antenna in one direction. By this operation, the antenna is rotated in one direction notwithstanding a level difference due to beam scanning. Accordingly, a reception level is restored when a moving body goes out of a shield and further when the antenna is directed to a wave source.
-
公开(公告)号：JPH01195322A
公开(公告)日：1989-08-07
申请号：JP2061188
申请日：1988-01-29
Applicant: NEC CORP
Inventor： NAKAYAMA MAKOTO
Abstract: PURPOSE:To improve the accuracy for detecting an angle by deriving a square of each value of a sin signal and a cos signal, and also, deriving the sum of these square values and controlling an excitation of a resolver so that the sum becomes a prescribed value. CONSTITUTION:Two analog signals of a sin theta signal and a cos theta signal which are obtained by a resolver 1 are converted to digital values by an A/D converter 2, and also, theta is derived by an arithmetic processing part 3, and also, in accordance with necessity, a processing such as binary/decimal conversions, etc., is executed and it is outputted an angle data. On the other hand, by multipliers 5, 6 and an adder 7, each square of each signal of the sin theta signal and the cos theta signal, and the sum of these squares are derived, and an output voltage of an excitation power source 4 is controlled so that the sum value is constant. In such a way, a magnetic flux in the resolver can be stabilized, and the accuracy for detecting an angle can be improved.
-
公开(公告)号：JPS6210903A
公开(公告)日：1987-01-19
申请号：JP15041185
申请日：1985-07-08
Applicant: NEC CORP
Inventor： NAKAYAMA MAKOTO
IPC: H01Q3/02
Abstract: PURPOSE:To decrease the generation probability of mis-tracking by forecasting the present incoming direction of a reception signal and applying correction to the comparison discrimination based on the result of forecast. CONSTITUTION:A step track equipment 11 consists of an integration circuit 11 integrating an output of a receiver 5 for a prescribed time, a sampling processing section 12 sampling and quantizing its output, a level storage circuit 13 storing the output, a tracking locus storage circuit 14 storing the angle detector 4, a forecast processing section 15 forecasting the present direction of a satellite based on the stored content and an operation processing section 16 operating the output and the stored content of the level storage circuit 13 and outputting the result of operation to a driver 2. The tracking locus store circuit 14 stores the tracking locus of an antenna 3 for a prescribed past time, the forecast processing section 15 forecasts the present direction of satellite based on the stored content and outputs the satellite direction forecast angle. The operation processing section 16 is given a correction function and uses the function to calculate the correction value as a part of the functions.
-
公开(公告)号：JPS6123981A
公开(公告)日：1986-02-01
申请号：JP14471584
申请日：1984-07-12
Applicant: Nec Corp
Inventor： MORI KOICHI , NAKAYAMA MAKOTO
CPC classification number: G01S3/44
Abstract: PURPOSE:To direct automatically an antenna almost to the middle of plural nearby satellites by synthesizing plural beacon signals received from stationary satellites and driving the antenna so that the synthesized output is maximum. CONSTITUTION:Beacon signals f1 and f2 from satellites arranged nearby are inputted to a receiver 1 through the antenna 4 and an amplifier 5 to detect beacon signals 101 and 102, which are supplied to a step track device 3 through an adding circuit 2. Then, control signals 103 and 103' obtained through the arithmetic processing of the device 3 are supplied to an antenna drive controller 6, whose output is used to drive the antenna 4 stepwise in directions AZ and EL. In such a case, the device 3 generates the control signals 103 and 103' so that its input signal 104 is maximum.
Abstract translation: 目的：通过合成从固定卫星接收的多个信标信号并驱动天线，使天线几乎靠近多个附近卫星的中间，使合成输出最大。 构成：通过天线4将放置在附近的卫星的信标信号f1和f2输入到接收机1和放大器5，以检测通过加法电路2提供给步进轨道装置3的信标信号101和102.然后， 通过装置3的运算处理获得的控制信号103和103'被提供给天线驱动控制器6，天线驱动控制器6的输出用于沿方向AZ和EL逐步驱动天线4。 在这种情况下，装置3产生控制信号103和103'，使其输入信号104最大。
-
公开(公告)号：JPS58211232A
公开(公告)日：1983-12-08
申请号：JP9551582
申请日：1982-06-02
Applicant: Nec Corp
Inventor： NAKAYAMA MAKOTO
CPC classification number: G06F3/00
Abstract: PURPOSE:To execute simultaneously an output and writing to a memory, to simplify a program, and to prevent dissidence of output data and memory reference data, by setting an address of an output port for supplying a processing result to an output device, to the same address as an address in an RAM. CONSTITUTION:An output interface circuit 4 and an RAM 2 are connected through data bus to a CPU 1 by a microprocessor, and an RAM decoder 6, the RAM 2 and an output decoder 8 are connected through an address bus 7 to the CPU 1. Also, an output device 3 is connected to an output port 4' of the circuit 4, and a control line 9 connected to the CPU 1 is connected to the RAM 2 and the circuit 4. Subsequently, a chip selecting a signal 10 of the RAM decoder 6 is applied to both the RAM 2 and the decoder 8, an address of the output port 4' of the circuit 4 for outputting the processing result to the output device 3, and an address in the RAM 2 are set to the same address, an output of the port 4' and writing of data to the RAM 2 are executed simultaneously, and dissidence of an output and memory data is prevented.
Abstract translation: 目的：通过将输出端口的地址设置为输出设备，同时执行输出和写入存储器，简化程序，并防止输出数据和存储器参考数据的不一致， 与RAM中地址相同的地址。 构成：输出接口电路4和RAM2通过微处理器通过数据总线连接到CPU 1，RAM解码器6，RAM2和输出解码器8通过地址总线7连接到CPU 1。 此外，输出装置3连接到电路4的输出端口4'，连接到CPU 1的控制线9连接到RAM2和电路4.随后，选择信号10的芯片 RAM解码器6被应用于RAM2和解码器8，将用于将处理结果输出到输出装置3的电路4的输出端口4'的地址和RAM2中的地址设置为相同 地址，端口4'的输出和数据到RAM2的写入被同时执行，并且防止输出和存储器数据的不一致。
-
Patent Agency Ranking
公开(公告)号：JPH11289210A
公开(公告)日：1999-10-19
申请号：JP8878098
申请日：1998-04-01
Inventor： HIGUCHI TADAAKI , NAKAYAMA MAKOTO
Abstract: PROBLEM TO BE SOLVED: To reduce the size and weight of the whole antenna system including a rotary driving mechanism, to simplify the rotary driving mechanism and to improve maintenance. SOLUTION: The antenna system is provided with a ring 3 surrounding an antenna 1, Y shaft 2 for rotatably supporting the antenna 1, connected to the ring 3, X shaft 4 extended in a direction perpendicular to the Y shaft 2, connected to the ring 3, and a support part 5 fixed on ground and horizontally and rotatably holding the X shaft 4. The rotary driving mechanism for rotatably driving the antenna 1 around the X and Y shafts 4, 2 is arranged on the ground. The driving mechanism is constituted of guides 6 laid on an antenna installing part and extended in parallel with the X shaft 4, moving devices 7 capable of freely moving along the guides 6, a guide 8 fixed on the devices 7 and extended in parallel with the Y shaft 2, a moving device 9 capable of freely moving along the guide 8, and a spring 10 for connecting the moving device 9 to the bottom of the antenna 1.
-
公开(公告)号：JPH05250854A
公开(公告)日：1993-09-28
申请号：JP4426792
申请日：1992-03-02
Applicant: NEC CORP , NEC GUMMA LTD
Inventor： HAYAKAWA YUICHI , HOSHINO TAKAMASA , NAKAYAMA MAKOTO
Abstract: PURPOSE:To realize a thin and small-sized device by reducing the space in a height direction for which the FPC(flexible print cable) of the magnetic head for the magnetic disk device is bent. CONSTITUTION:The surfaces 24 and 25 of both ends of the FPC for connecting a moving magnetic head 1 and a fixed electric circuit are made parallel to the surface of a medium 3 and both end surfaces 24 and 25 are supported within the same surface. Also, a groove is formed in the longitudinal direction of the FPC 22, the form of the FPC 22 is made to repeating S-shape, thus, a twisting height at the time of bending is further reduced.
-
公开(公告)号：JPH0364104A
公开(公告)日：1991-03-19
申请号：JP19944589
申请日：1989-08-02
Applicant: NEC CORP
Inventor： NAKAYAMA MAKOTO , KUSANO MITSUHIRO
Abstract: PURPOSE:To give warning visually by combining a lighting body, a wave detector and a rotary drive device and lighting a display section when an electromagnetic wave whose power is a predetermined strength or over is incoming. CONSTITUTION:A rotary drive mechanism 13 drives a display device 11 and an electromagnetic wave detector 12 around the X axis at a period of 2-3sec. The electromagnetic wave detector 12 uses a diode detector 301 to detect an RF signal received by an electromagnetic wave pickup antenna 122, the detected RF signal is amplified by an amplifier 302, a switching circuit 303 is operated to light an electric bulb 112 of the display device 11. The switching circuit 303 is operated when the output of the amplifier 302 is a predetermined level or over. The display device 11 and the electromagnetic wave detector 12 are turned in this way, and when the electromagnetic wave detector 12 detects an electromagnetic wave whose level is a predetermined level or over, the electric bulb 112, then the incoming direction of the electromagnetic wave is recognized and it gives a warning to a public person locating on the prolonged line in the incoming direction of the electromagnetic wave.
-
公开(公告)号：JPH0313104A
公开(公告)日：1991-01-22
申请号：JP14916289
申请日：1989-06-12
Applicant: NEC CORP
Inventor： NAKAYAMA MAKOTO , KUSANO MITSUHIRO
IPC: H01Q19/00
Abstract: PURPOSE:To avoid that a person approaches an antenna in advance and to prevent the interruption of communication and a bad influence to a human body by providing a transmitting signal output warning device to generate a warning when an electromagnetic wave is transmitted. CONSTITUTION:The antenna is equipped with a main reflection mirror 2 arranged on a radio transmitter/receiver 1, primary radiator 3 and antenna stand 4 and in one part of the main reflection mirror 2, a transmitting signal output warning device 5 is arranged. The warning device 5 detects one part of the electromagnetic wave, which is radiated from the primary radiator 3, by a pickup antenna 6 and executes frequency detection by a diode frequency detector 7. Afterwards, the electromagnetic wave is amplified by an amplifier 8 and an alarm 10 is operated through an intermittent circuit 9. Then, an intermittent warning tone is generated. Thus, since the warning tone is intermittently generated when the antenna is set in the state of transmission, the general person recognizes that the antenna is under the transmission. Accordingly, it is avoided in advance that the person approaches the antenna. Then, the interruption of the communication or the bad influence to the human body can be prevented.
-
公开(公告)号：JPS63129702A
公开(公告)日：1988-06-02
申请号：JP27715686
申请日：1986-11-19
Applicant: NEC CORP
Inventor： NAKAYAMA MAKOTO
IPC: H01Q3/02
Abstract: PURPOSE:To eliminate the need for connection change in an output of a tracking receiver by applying position control to an angle display of an azimuth axis so as to be coincident with a command angle set by a predetermined relation from angle display information of azimuth axis, elevating axis and orthogonal elevating axis. CONSTITUTION:An angle display signal of each axis is converted into a digital signal by resolver converters 16-18, compared with command angle information from a coordinate conversion circuit 19 or an angle command generating circuit 20 and fed to a tracking mode switch 13 via servo control circuits 21-23. In the self-tracking mode thrown to the position A, the elevating axis (EL axis) and the orthogonal elevating (XEL axis) drive system orthogonal to the EL axis are controlled always by an error signal from the tracking receiver, the azimuth axis (AZ axis) drive system is controlled by command angle information from the angle command generating circuit 20 and the position control where the angle display of the AZ axis is coincident with the command angle of the angle command generating circuit 20 is applied. The angle command generating circuit 20 applies an or bit predicting operation based on the angle display information of each axis and generates the command angle information of the AZ axis from the result of prediction.
-
-
-
-
-
-
-
-
-
Search Results
21
records
(took 0.023 seconds)
