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81. 发明专利

JPS63187849A RADIO TELEPHONE SYSTEM 失效
公开(公告)号：JPS63187849A
公开(公告)日：1988-08-03
申请号：JP1851987
申请日：1987-01-30
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MURATA YOSHITOSHI , KACHI MASAKI
IPC分类号： H04M1/26 , H04B7/26
摘要： PURPOSE:To eliminate the need for the investigation of the classification of a trunk line at every change of a trunk line by providing a trunk line classification managing equipment transmitting a discriminating signal representing whether a trunk line is a line for a dial pulse or a pushbutton signal to a radio equipment in the presence of a call signal of the radio telephone set between the trunk line and the radio equipment. CONSTITUTION:When a call signal is sent to a connector 2 from a radio telephone set, a call response signal is returned from the connector 2 to the radio telephone set 3 and a dial signal is given to the connector 2 from the radio telephone set 3, the information representing the presence of the call signal is detected by the trunk line classification managing device 4, the discriminating signal representing whether the trunk line represents the DP(dial pulse) signal or the PB(pushbutton) signal to the connector 2 to switch the dial conversion switch of the connector 2 automatically. Thus, after the dial signal from the radio telephone set 3 in succession to the call signal is converted into the dial signal suited to the trunk line 1 by the connector 2 and sent to the exchange of the subscriber line.

82. 发明专利

JPS63180231A MOBILE RADIO COMMUNICATION SYSTEM 失效
公开(公告)号：JPS63180231A
公开(公告)日：1988-07-25
申请号：JP1279787
申请日：1987-01-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MURATA YOSHITOSHI , HATTORI TAKESHI , SASAKI AKIO , HIRONO MASAHIKO
IPC分类号： H04Q7/22 , H04B7/26 , H04Q7/20 , H04Q7/24 , H04Q7/28
摘要： PURPOSE:To place the priority on the communication of a specific subscriber in a specific radio zone by storing the kinds of specific subscriber so as to secure the idle state of number of the radio transmitter receiver. CONSTITUTION:A control section of a line control section 2 uses a radio base management table to generate a subscriber kind designation signal from a radio base management table and sends it to a base station 3 and the information relating to the subscriber kind is stored in a subscriber kind storage section. A mobile radio equipment 5 sends a call signal including the information from its own equipment number memory, a base station number memory and a subscriber kind storage section to a radio base 3, and the radio base 3 collates the subscriber kind in the reception signal with the subscriber kind storage section of its own station and when they are coincident, a radio line is established and relayed to the line controller 2 and when the idle radio transmitter- receiver 4 in the base 3 is equal to the number of specific subscribers designated therein, the outgoing/incoming call connection request for that other than the specific subscriber is rejected.

83. 发明专利

JPS63180230A MOBILE RADIO LINE CONNECTING SYSTEM 失效
公开(公告)号：JPS63180230A
公开(公告)日：1988-07-25
申请号：JP1007987
申请日：1987-01-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MONMA KOJI , MURATA YOSHITOSHI , HIRONO MASAHIKO
IPC分类号： H04B7/26
摘要： PURPOSE:To omit the time required to rest both wired and radio lines by acquiring and holding both the wired and radio lines after the end of call for a prescribed time. CONSTITUTION:When a call of a cordless telephone set 16 during communication is finished, a call end signal is sent from the cordless telephone set 16 to a radio line controller 12 via a radio equipment 14a, and the radio controller 12 keeps the wired line 13 and the radio line 15 and opens the DC loop to cut off the telephone line 11a. Then the radio line controller 12 and the radio connection device 14, when the time of the timer acquiring the line is over, cuts off the radio and wired lines respectively. Thus, when the cordless telephone set 16 makes a call again before timeout, since the wired and radio lines are held, the connection with a fixed telephone network 10 is executed in a short time.

84. 发明专利

JPS63175538A RADIO CHANNEL CONTROL SYSTEM 失效
公开(公告)号：JPS63175538A
公开(公告)日：1988-07-19
申请号：JP589487
申请日：1987-01-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OTA YUJI , MURATA YOSHITOSHI
IPC分类号： H04B7/26 , H04Q7/20
摘要： PURPOSE:To attain sure connection with high accuracy and hardly subject to the effect of a signal from other device by adding a kind of a control signal to be returned from an opposite side and information designating the transmission timing in the sent control signal. CONSTITUTION:When a hook switch of a radio telephone set is in the off-hook state, the radio telephone set sends the call signal to a radio connection device. In the constitution of the control signal in such a case, the call signal of signal kind A31 and a radio telephone number of the identification code 32 exist. When the radio telephone set desires to shift the transmission timing of the call reply signal, sent timing information 33 is brought into significant information. Since a signal designating the sent timing of the control signal is transferred in addition to the information by which the radio connection device and the radio telephone set identify each other mutually at the connection control, the control signal is transmitted/received surely by sending the control signal accordingly.

85. 发明专利

JPS6248132A RADIOTELEPHONEY SYSTEM 失效
公开(公告)号：JPS6248132A
公开(公告)日：1987-03-02
申请号：JP18776085
申请日：1985-08-27
申请人： NIPPON TELEGRAPH & TELEPHONE , NEC CORP , TOSHIBA CORP
发明人： MURATA YOSHITOSHI , YOSHIZAWA KAZUHIRO , YOTSUYA AKIO , ITO KOICHI
IPC分类号： H04Q7/38 , H04B7/26 , H04M1/00 , H04Q7/20 , H04Q7/28
摘要： PURPOSE:To attain transfer from a radiotelephone set during talking to other set by sending an incoming signal to other radiotelephone set based on a connection signal sent from a radiotelephone set connected to a wired line and connecting the set to the wired telephone line via a master set based on the other response signal. CONSTITUTION:A receiver 14 of a master set 4 receives a call signal from a radiotelephone set 5 via an antenna 12 a multicoupler 13, its demodulation output is fed to a control section 15, then the control section 15 activates a transmitter 16 to send a call signal to a radio telephone set 5'. The call signal from the master set 4 to the radiotelephone set 5' is sent through a control channel C-CH. When the radiotelephone set 5' is sent through a control channel C-CH. When the radiotelephone set 5' receives the call signal, identification information included in the signal is collated with information stored in a read only memory 17 and when they are coincident, the information is subject to reception processing.

86. 发明专利

JPS6238037A MOBILE RADIO EQUIPMENT 失效
公开(公告)号：JPS6238037A
公开(公告)日：1987-02-19
申请号：JP17729685
申请日：1985-08-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： OOTA YUJI , MURATA YOSHITOSHI , TATE KAZUYUKI
IPC分类号： H04B7/26 , H04M1/00
摘要： PURPOSE:To evade the same channel interference to be generated while plural stations sends signals at the same time by allowing a radio equipment sending a connection control signal to opposed radio equipment to detect a signal of a transmission control channel so as to control the use of the control channel. CONSTITUTION:A reception section 20 is provided with a receiver 21 receiving a signal sent from a station of different kind from the own station and a receiver 23 receiving a signal sent from a station of the same kind as the own station. The communication from connection devices A, B to radiotelephone set C, D is executed by using a control channel having a frequency f1 and plural talking channels having near the frequency f1 and the communication from the radio telephone sets C, D to the connection devices A, B is executed through the control channel having a frequency f2 and plural talking channels having near the frequency f2. When a detection circuit 25 of the radiotelephone set C detects a signal from the other station, a control section 30 sends a busy tone to inhibit a call signal of the radiotelephone set C thereby avoiding collision with the other station.

87. 发明专利

JPS5797739A RECEIVING SIGNAL SELECTING SYSTEM APPLIED TO SPACE DIVERSITY RECEIVING SYSTEM 失效
公开(公告)号：JPS5797739A
公开(公告)日：1982-06-17
申请号：JP17419680
申请日：1980-12-10
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE
发明人： TAKAZAWA NOBUYUKI , MURATA YOSHITOSHI
IPC分类号： H04L1/06 , H04B7/08
摘要： PURPOSE:To discriminate a radio channel for the signal of a maximum receiving field intensity, by selecting this signal on the basis of the preamble signal detected first in plural space diversity receiving signal demodulating circuits. CONSTITUTION:Radio waves from a moving material 1 are received by n-number receiving devices 2-1-2-n and are demodulated by respective signal demodulating circuits 3-1-3-n. A preamble signal is detected from demodulated receiving data and is transferred to a timer 5 and a data signal transmitting circuit 7. Simultaneously, receiving data with receiving field information added are applied to receiving registers 4-1-4-n. Receiving field information of registers 4-1-4-n are compared in a level comparing circuit 6 by the time-up signal of the timer 5, and a select signal is transferred to the register showing a maximum receiving field intensity. The output of this register is sent from the data transmitting circuit 7 to a data processing device. Thus, the call to the moving material is ensured even if delay times of transmission lines W1-Wn are different from one another.

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