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1. 发明专利

JPH05130070A SPREAD SPECTRUM COMMUNICATION SYSTEM 失效
公开(公告)号：JPH05130070A
公开(公告)日：1993-05-25
申请号：JP28679791
申请日：1991-10-31
申请人： NAKAGAWA MASAO , KONO RYUJI , TOSHIBA CORP
发明人： NAKAGAWA MASAO , KONO RYUJI , KOBAYASHI HIROSHI , YANO MOTOMITSU
IPC分类号： H04B7/26 , H04J13/00 , H04J13/16 , H04W72/04
摘要： PURPOSE:To facilitate the identification of a transmission station by applying spread modulation to part of a signal subject to primary modulation with a spread code in common to the entire system decided in advance, applying spread modulation to the other part with a spread code specific to communication stations and sending the modulated signal. CONSTITUTION:A control information part of a packet is subject to primary modulation by a primary modulator 110 and inputted to a multiplier 150. Data representing a common spread code decided in advance are stored in a ROM 340, a spread code generator 130 generates the common spread code based on the data, the multiplier 150 multiplies the signal from the primary modulator 110 with the common spread code to implement the spread modulation by using the common spread code. Then a spread code generator 120 generates a spread code specific between communication stations based on the data stored in a RAM 30 and representing the specific spread code between the communication stations, and the code and the signal from the primary modulator 110 are multiplied to implement the spread modulation by using the specific spread code.

2. 发明专利

JPH05130053A RADIO TRANSMITTER 失效
公开(公告)号：JPH05130053A
公开(公告)日：1993-05-25
申请号：JP28679891
申请日：1991-10-31
申请人： NAKAGAWA MASAO , KONO RYUJI , TOSHIBA CORP
发明人： NAKAGAWA MASAO , KONO RYUJI , KOBAYASHI HIROSHI , KAMURA KOICHIRO
IPC分类号： H04B15/00 , H04B1/7097 , H04J13/00
摘要： PURPOSE:To reduce the effect given onto other equipment utilizing a same frequency by collecting information of an interference wave as to a prescribed frequency band, referencing the information and controlling the transmission timing of transmission data. CONSTITUTION:Transmission data outputted from a control section 100 is subject to spread modulation by a spread modulator 200 and subject to carrier modulation by a carrier modulation section 300 and the result radiates from an antenna 400 as a radio wave. On the other hand, an interference wave received by an antenna 410 is inputted to an interference wave sensing section 500, from which information relating to the interference wave is inputted to the control section 100. The control section 100 decides the timing of transmission of the transmission data based on the information and controls the operation of the spread modulator 200 and the carrier modulator 300. Since data are sent while avoiding collision with the interference wave, the effect given onto other radio wave application equipment utilizing the same frequency is reduced.

3. 发明专利

JPH0568017A SPREAD SPECTRUM RECEIVER AND SPREAD SPECTRUM TRANSMITTER AND SPREAD SPECTRUM COMMUNICATION SYSTEM 失效
公开(公告)号：JPH0568017A
公开(公告)日：1993-03-19
申请号：JP18480391
申请日：1991-07-24
申请人： NAKAGAWA MASAO , KONO RYUJI , TACHIKAWA SHINICHI , TOSHIBA CORP
发明人： NAKAGAWA MASAO , KONO RYUJI , TACHIKAWA SHINICHI , KOBAYASHI HIROSHI , YAMAZAKI SHOICHIRO
IPC分类号： H04J13/00 , H04B1/7097 , H04B1/715
摘要： PURPOSE:To implement communication with high quality by using an interference wave display section so as to detect an interference wave from a signal received by a reception section, eliminating the interference wave at the interference wave elimination section based on the result of detection, then applying spread demodulation to the resulting signal, thereby relieving the influence of the interference wave. CONSTITUTION:The system is provided with an antenna 210 inducing a high frequency signal from a radio wave, an interference wave detecting means 230 detecting an interference wave from the high frequency signal induced by the antenna 210, an interference wave eliminating means 240 eliminating the interference wave detected by the interference wave detection means 230 from the high frequency signal, and a spread demodulation means 250 applying spread demodulation to the high frequency signal from which the interference wave is removed by the interference wave elimination means 240. The interference wave elimination means 240 is provided with a signal generating means generating a signal whose frequency, phase and amplitude are almost equal to those of the interference wave detected by the interference wave detecting means 230 and with a signal subtracting means subtracting the signal generated by the signal generating means from the reception signal received by the antenna 210.

4. 发明专利

JPH1174865A SPECTRUM DIFFUSION COMMUNICATION SYSTEM 失效
公开(公告)号：JPH1174865A
公开(公告)日：1999-03-16
申请号：JP15972198
申请日：1998-06-08
申请人： NAKAGAWA MASAO , KONO RYUJI , TOSHIBA CORP
发明人： NAKAGAWA MASAO , KONO RYUJI , KOBAYASHI HIROSHI , YANO MOTOMITSU
IPC分类号： H04B1/713 , H04J13/00 , H04W72/04 , H04Q7/38
摘要： PROBLEM TO BE SOLVED: To easily specify a transmission terminal station by diffusion- modulating information including the ID specific to a terminal station of a primary modulated signal by a preliminarily decided common diffusion code, and transmitting it by a terminal station, and demodulating the transmitted diffusion modulation signal by the common diffusion code by a base station. SOLUTION: A packet-shaped signal is inputted to a primary modulator 110. The packet includes a control information part for transferring control information such as an ID and packet length, data part for transmitting user information, and error correcting part for checking whether or not an error is generated in data. The control information part is primary modulated by a primary modulator 110, and inputted to a multiplier 140. Data indicating a preliminarily decided common diffusion code are held in an ROM: 340, the common diffusion code is generated by a diffusion code generator 130 based on the data, and the signal from the primary modulator 110 is multiplied by the common diffusion code by a multiplier 150 so that diffusion modulation can be operated by the common diffusion code.

5. 发明专利

JPH10173631A SPREAD SPECTRUM COMMUNICATION SYSTEM AND COMMUNICATION TERMINAL 失效
公开(公告)号：JPH10173631A
公开(公告)日：1998-06-26
申请号：JP35322097
申请日：1997-12-22
申请人： NAKAGAWA MASAO , KONO RYUJI , TOSHIBA CORP
发明人： NAKAGAWA MASAO , KONO RYUJI , KOBAYASHI HIROSHI , YANO MOTOMITSU
IPC分类号： H04J13/00 , H04W72/04 , H04Q7/38
摘要： PROBLEM TO BE SOLVED: To maintain secrecy, and to operate control by a base station or the like by using one spread code by diffusion modulating a signal including control information for controlling communication by a common spread code, and spread modulating a signal, including user information by a spread code specific between communication stations, and transmitting them. SOLUTION: The control information part of a packet is primary modulated by a primary modulator 110 and inputted to a multiplier 150. Then, a common spread code is generated by a spread code generator 130, the common spread code is multiplied by the signal from the primary modulator 110 by the multiplier 150, and spread modulation by the common spread code is operated. On the other hand, the data part and error-correcting part of the packet is primary modulated by the primary modulator 110, and inputted to a multiplier 140. A specific spread code is generated by a spread code generator 120, based on data indicating the spread code specific between communication stations held in an RAM 330. This code is multiplied by the signal from the primary modulator 110, and the spread modulation by the specific spread code is performed.

6. 发明专利

JP2975915B2 失效
公开(公告)号：JP2975915B2
公开(公告)日：1999-11-10
申请号：JP35322097
申请日：1997-12-22
申请人： NAKAGAWA MASAO , KONO RYUJI , TOSHIBA KK
发明人： NAKAGAWA MASAO , KONO RYUJI , KOBAYASHI HIROSHI , YANO MOTOMITSU
IPC分类号： H04J13/00 , H04W72/04 , H04Q7/38

7. 发明专利

JP2862717B2 失效
公开(公告)号：JP2862717B2
公开(公告)日：1999-03-03
申请号：JP28679791
申请日：1991-10-31
申请人： NAKAGAWA MASAO , KONO RYUJI , TOSHIBA KK
发明人： NAKAGAWA MASAO , KONO RYUJI , KOBAYASHI HIROSHI , YANO MOTOMITSU
IPC分类号： H04B7/26 , H04J13/00 , H04J13/16 , H04W72/04 , H04Q7/38

8. 发明专利

JP2002141730A DIRECTIONAL ANTENNA SYSTEM AND CALIBRATION METHOD FOR THIS SYSTEM 失效
公开(公告)号：JP2002141730A
公开(公告)日：2002-05-17
申请号：JP2000335088
申请日：2000-11-01
申请人： TOSHIBA TEC KK , KONO RYUJI
发明人： KONO RYUJI , MOCHIZUKI HIROKI
IPC分类号： G01R29/10 , H01Q3/24 , H01Q3/26 , H04B7/08 , H04B7/10
摘要： PROBLEM TO BE SOLVED: To provide a directional antenna system that easily calculates a correction value used to correct a phase difference and an amplitude difference and that uses the calculated correction value to correct the phase difference and the amplitude difference of each element with high accuracy. SOLUTION: The directional antenna system is provided with a reference signal generating means 24 that generates a reference signal, switch means 25a-25d that are used to pass one of received signals from antenna elements 11a-11d to a corresponding reception system, a frequency up-converter 21 that converts a frequency of an output signal from an adder means 19 into the original frequency of the received signal, a comparison means 26 that compares an output signal from the converter with the reference signal from the reference signal generating means, an error signal generating means 27 that receives an output of the comparison means to generate an error signal, and a weighting correction means 28 that calculates a correction value to correct a weighting value corresponding to the error signal from the error signal generating means so as to sequentially calibrate each weighting value of a weighting means in a way that the error in the phase and the amplitude of the output signal from the frequency up-converter is equal to that of the reference signal.

9. 发明专利

JP2000332668A RADIO COMMUNICATION SYSTEM 失效
公开(公告)号：JP2000332668A
公开(公告)日：2000-11-30
申请号：JP14346499
申请日：1999-05-24
申请人： TOSHIBA TEC KK , KONO RYUJI
发明人： KONO RYUJI , MOCHIZUKI HIROKI
IPC分类号： H04B1/713 , H04B1/715 , H04B7/04 , H04B7/06 , H04B7/08 , H04B7/10 , H04B7/26 , H04L1/04 , H04W16/28
摘要： PROBLEM TO BE SOLVED: To attain certain radio communication by operating optimal directional control by using proper weighting values by each hopping frequencies between a base station and each terminal station in the radio communication in a frequency hopping spectrum diffusion system between the base station and each terminal station. SOLUTION: A microprocessor 36 preliminarily receives information such as the incoming angle of desired waves of each hopping frequencies or the incoming angle of unnecessary waves from an unnecessary wave generating source and the receiving power for each terminal station from a desired wave/ unnecessary wave information inputting part 35, and stores the weighting values of a transmitting system and a receiving system of each hopping frequencies for each terminal station in a weight value table 29. Then, in the communication, the microprocessor 36 reads the weighting values of the receiving system and the transmitting system of the hopping frequencies in the terminal station from the weight value table at each time of frequency hopping, and sets the weighting values in attenuators 24 and 33 and phase shifters 25 and 32, and forms the optimal directional pattern by every hopping frequency for communication.

10. 发明专利

JP2001298316A METHOD AND DEVICE FOR CALIBRATING ARRAY ANTENNA 失效
公开(公告)号：JP2001298316A
公开(公告)日：2001-10-26
申请号：JP2000115300
申请日：2000-04-17
申请人： TOSHIBA TEC KK , KONO RYUJI
发明人： KONO RYUJI , SUGIYAMA TOMONORI
IPC分类号： H01Q3/26
摘要： PROBLEM TO BE SOLVED: To easily calibrate an array antenna with less computation. SOLUTION: An optimal weight coefficient for each of antenna elements and the directional pattern of the array antenna are calculated by performing simulation on the basis of the information of a desired wave direction and a spurious wave direction. Continuously, the calculated weight coefficient is actually set to each of antenna elements, the directional pattern of the array antenna at that time is measured, the absolute value of a difference between the calculated directional pattern and the measured directional pattern is respectively found for each direction, and an added total value, to which this difference is added, is found. Continuously, the directional pattern is respectively measured by using plural weight coefficient groups, for which the weight coefficient is changed to some extent on the basis of a weight coefficient group composed of respective calculated weight coefficients, the absolute value of a difference between the directional pattern calculated for each of weight coefficient groups and the measured directional pattern is respectively found and an added total value, to which this difference is added, is found. Then, the weight coefficient group of the least added total value is determined as an optimal weight coefficient group.

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