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1. 发明专利

JPS57141148A RADIO TELEPHONE SET 失效
公开(公告)号：JPS57141148A
公开(公告)日：1982-09-01
申请号：JP2542081
申请日：1981-02-25
申请人： NIPPON TELEGRAPH & TELEPHONE , TOKYO SHIBAURA ELECTRIC CO
发明人： NISHIE SHIYOUZOU , TSUJIMURA KIYOYUKI , ITOU KOUICHI
IPC分类号： H04B7/005 , H04M1/00 , H04M1/73
摘要： PURPOSE:To make an automatic check on the intensity of a received electric field by at least one of a master device and a telephone set when a radio telephone set is not in use, by providing a controlling means for signals of the master device and radio telephone set and a state display means for the radio telephone set. CONSTITUTION:The signal control part 12 of a master device 10 when enqueued sends a calling signal automatically and the reception level of a transmitted radio wave, modulated by an answer signal to said signal, from a radio telephone set 30 is detected. When the reception level is below a prescribed one, the detection that the telephone set 30 is not within a communication range is performed and if the answer signal from the telephone set 30 is stopped in a calling signal transmission period, that is detected to detect the drop in power voltage of the telephone set 30. The signal control part 33 of the telephone set 30, on the other hand, detects its drop in power voltage and sends an answer signal to the device 10 by receiving the calling signal from the device 10 in this case; when no call signal is sent from the device 10 even a prescribed time later, that is detected to stop the transmission of the answer signal.

2. 发明专利

JPS57109437A SELECTIVE CALL RECEIVER 失效
公开(公告)号：JPS57109437A
公开(公告)日：1982-07-07
申请号：JP18381380
申请日：1980-12-26
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE , TOKYO SHIBAURA ELECTRIC CO , MATSUSHITA COMMUNICATION IND
发明人： MASAKI MASARU , ISHII DAISUKE , NISHIE SHIYOUZOU , WATANABE HIROSHI , ONO KOUJI , SEKIKAWA TATSUAKI , HORI TATSUYUKI , ARAKAWA KATSU
IPC分类号： H04B1/16 , H04Q7/18 , H04W52/02
摘要： PURPOSE:To extend the life of a battery and improve the probability of receiving, by turning on the power source of a radio part in the time, when a synchronizing signal is received plural number of times, only when the receiver is asynchronous with a transmission signal. CONSTITUTION:When a power supply switch 22 is turned on, a power rise detecting circuit 24 detects the rise of the power to output an output signal (f), and therefore, a timing circuit 26 generates an output in the time when a frame synchronizing signal can be received plural times, and a power supply control part 23 is driven to supply the power to a radio part 12. When the electric field becomes weak and the frame synchronizing signal cannot be received, a frame out-of synchronization detecting circuit 18 outputs an output signal (d), and therefore, the timing circuit 26 generates an output in the time, when the frame synchronizing signal is received plural number of times, similarly to the case of the power rise, and the power is supplied to the radio part 12. If the frame synchronizing signal is not received in this time, the power source of the radio part 12 is turned off.

3. 发明专利

JPS57155847A RADIO TELEPHONE SET 失效
公开(公告)号：JPS57155847A
公开(公告)日：1982-09-27
申请号：JP4083281
申请日：1981-03-20
申请人： NIPPON TELEGRAPH & TELEPHONE , TOKYO SHIBAURA ELECTRIC CO
发明人： NISHIE SHIYOUZOU , FUJII TOSHITAKA , ITOU KOUICHI , HATAKENO MASATAKA , TOKI AKIO
IPC分类号： H04M1/00 , H04W76/02 , H04W84/10 , H04W88/02
摘要： PURPOSE:To use a cordless telephone as an alarming use, by providing a timer function to the telephone and generating a callout tone at a prescribed time, without using an exchanger in the cordless telephone set. CONSTITUTION:When a switch 11 is operated at a slave set 10, a control circuit 13 discriminates if the operation of a dial 12 is not the dial operation for the callout of an opposing station but the dial operation for time setting, and a time information signal from the dial 12 is set to a memory 14. When a comparison circuit 16 detects that the time of a timer circuit 15 reaches a time set to the memory 14, a signal from an oscillator built in the control circuit 13 is applied to a transmitter 18 via a ringer amplifier 34 to generate a call tone (alarm tone). Further, the memory 14, the timer 15 and the comparison circuit 16 can be provided not in the slave station 10 but in the master station 20. Further, the call tone for the set time and that at incoming from an opposing subscriber can be generated with different tone.

4. 发明专利

JPS57171849A RADIO SELECTIVE CALLING RECEIVER 失效
公开(公告)号：JPS57171849A
公开(公告)日：1982-10-22
申请号：JP5679881
申请日：1981-04-15
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE
发明人： MORI YASUHIRO , OOYAGI KOUJI , WATANABE HIROSHI , NISHIE SHIYOUZOU
IPC分类号： H04Q7/14 , H04W84/00
摘要： PURPOSE:To surely confirm necessary stored information in a short itme, by providing a means which informs stored numbers and a means which controls memory readings. CONSTITUTION:A carrier modulated by a calling signal is received by an antenna 100 and supplied to a radio section 200. The signal demodulated at the radio section 200 is discriminated by a decoder 300 whether it is a selective calling signal of its own receiver or not. When it is a calling signal of its own receiver and when a switch 700 is closed, a driving circuit 600 starts to operate and informs the owner of the receiver that the receiver receives a calling signal by starting a singing from a speaker 800, and, at the same time, the circuit 600 stores the message information continuously sent. When a memory reading switch 1,000 is pressed at this time, number of message information stored at the point of time is displayed on a displaying device 900, and the message information stored in the read memory can be confirmed on a display device 500 through a display driving circuit 400.

5. 发明专利

JPS5642444A ZONE SWITCHING SYSTEM OF MOBILE RADIO COMMUNICATION 失效
公开(公告)号：JPS5642444A
公开(公告)日：1981-04-20
申请号：JP11733879
申请日：1979-09-14
申请人： NIPPON TELEGRAPH & TELEPHONE , ANRITSU ELECTRIC CO LTD , JAPAN RADIO CO LTD
发明人： WATANABE KAZUYOSHI , NOMURA JIYUNICHI , TOMITA RIYUUKICHI , NISHIE SHIYOUZOU , TSUJIMURA KIYOYUKI , TSUJIMURA SHIYOUJI
IPC分类号： H04B7/26
摘要： PURPOSE:To make it possible to obtain a talking circuit of good quality by selecting a base station zone of good S/N at any time, by providing a squelch circuit, which detects the intensity of a radio wave from a base station by the high-order and low- order two S/N prescribed values, at a mobile station side. CONSTITUTION:Information on switching between the high-order and low-order two S/N prescribed values is previously supplied to terminal 12b of squelch circuit 12 from control circuit 13 via terminal 13a. While voltage ''0'' is supplied to terminal 28, gate 27 outputs ''1'' and when the high-order S/N prescribed value is set in this state, an input to noise amplifying circuit 30 is adjusted by variable resistor 22 so that the output of switching circuit 32 will vary exactly. Next, applying ''1'' to terminal 28 changes the output of gate 27 into ''0'' and since the signal is attenuated according to variable resistor 26, the adjustment is so made that at the time of the low-order S/N prescribed value, a noise increment will be attenuated by resistor 26. Namely, S/N is switched 32 at a certain value, so circuit 12 is switched at need to judge zone switching by its output.

6. 发明专利

JPS5621463A TRANSMISSION AND RECEIVING METHOD OF CONTROL SIGNAL 失效
公开(公告)号：JPS5621463A
公开(公告)日：1981-02-27
申请号：JP9679679
申请日：1979-07-31
申请人： NIPPON TELEGRAPH & TELEPHONE , ANRITSU ELECTRIC CO LTD
发明人： NOMURA JIYUNICHI , WATANABE KAZUYOSHI , TOMITA RIYUUKICHI , NISHIE SHIYOUZOU , TSUJIMURA KIYOYUKI
IPC分类号： H04J1/00 , H04B7/00 , H04B14/00 , H04J1/16
摘要： PURPOSE:To detect surely the control signal in the receiving side to prevent malfunctions, by arranging the main band of sound and the control signal in the higher side and the side lower than the main band respectively due to frequency inversion in the transmission side. CONSTITUTION:In the transmission side, sound signal fV at input terminal 5 is output through mixing part 3 after subjected to frequency inversion in 31. Control signal f0' is arranged in the side lower than the sound band by control signal oscillator 2'. In the receiveing side, when the received signal is sound signal, frequency inversion is performed in 32 to take out signal fV. Then, BPFs 13' and 7' are provided correspondingly to main band fX' of sound and control signal f0', and the output of a potential opposite to the output of rectifying circuit 8 of the control signal is generated in the output side of suppressing circuit 15 by components fX', thereby preventing malfunctions of the control signal circuit system.

7. 发明专利

JPS5792932A SELECTIVE CALLING RECEIVER WITH DISPLAY 失效
公开(公告)号：JPS5792932A
公开(公告)日：1982-06-09
申请号：JP16796680
申请日：1980-12-01
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE
发明人： AKAHORI MASAAKI , OOYAGI KOUJI , NISHIE SHIYOUZOU
IPC分类号： H04B1/16 , H04B5/04 , H04W52/02 , H04W88/02
摘要： PURPOSE:To enrich the function and reduce the power consumption, by combining a private LSI and a one-chip CPU. CONSTITUTION:A digital signal (a) from a receiving part 2 is supplied to a display controller 4 of the program controlling system consisting of a one-chip CPU and a receiving controller 3 consisting of a private LSI. The controller 3 generates a synchronizing signal in a signal synchronizing circuit 11, and a switch 22 which disconnects and connects the power supply to the receiving part 2 is controlled by a battery saving timer 14, and contents of a register 13 (calling number information in a P-ROM 8 sent through the controller at the power on time and the synchronizing signal receiving time) is collated with receiving information by a signal detecting circuit 12, and an audible tone signal is generated by a tone generating circuit 15 at the call time, and a switch 23 which connects the power source of the display controller 4 is operated at the synchronizing signal receiving time and the call time. The controller 4 controls the output of receiving data to a diaplsy equipment 6 and controls the read of data from the P-ROM 8.

8. 发明专利

JPS5686543A CHANNEL SWITCHING METHOD 失效
公开(公告)号：JPS5686543A
公开(公告)日：1981-07-14
申请号：JP16357579
申请日：1979-12-18
申请人： NIPPON TELEGRAPH & TELEPHONE , ANRITSU ELECTRIC CO LTD , NIPPON SENPAKU TSUUSHIN KK , JAPAN RADIO CO LTD
发明人： WATANABE KAZUYOSHI , TOMITA RIYUUKICHI , NISHIE SHIYOUZOU , AKIHISA YUKIO , TSUJIMURA SHIYOUJI
IPC分类号： H04Q7/00
摘要： PURPOSE:To minimize the use of common channel mounted to the lower rank, by retrieving vacant channels from the upper rank again through returning to the upper rank channels once, if waiting is made for a given time at vacant channels having mobile stations, in a mobile radio communication system. CONSTITUTION:The program is made from start (1) at first, switching (2) to top channel, detecting (3) whether or not the vacant channel, switching (7) to the next channel if not the vacant channel, and detecting (3) again if the vacant line. Thus, when a vacant line is found, the waiting operation for the line, and if the waiting operation keeps for 10min at this channel, the channel returns (4) to the top channel, and a vacant line is retrieved from the top channel again for waiting operation. In calling during waiting, the flow of calling (5) is transited, and when the call is finished, the retrieval operation (8) of vacant line from the top channel is made again. If incoming call is given during waiting, the flow is moved to the incoming call (6) and the top channel is again selected when the call is finished.

9. 发明专利

JPS5640350A MF SIGNAL TRANSMITTING AND RECEIVING SYSTEM 失效
公开(公告)号：JPS5640350A
公开(公告)日：1981-04-16
申请号：JP11595079
申请日：1979-09-10
申请人： NIPPON TELEGRAPH & TELEPHONE , JAPAN RADIO CO LTD , ANRITSU ELECTRIC CO LTD
发明人： TAKAMURA MITSURU , NISHIE SHIYOUZOU , FUKUHARA YASUMASA , WATANABE KAZUYOSHI
IPC分类号： H04B1/40 , H04L27/26 , H04Q1/45
摘要： PURPOSE:To simplify a transmitting and receiving circuit, by providing a variable frequency oscillator for transmission and reception and by transmitting and receiving the difference between a fixed frequency or an input frequency and the variable frequency. CONSTITUTION:In case of transmission, a fixed frequency is applied from input terminal 1' to balanced modulator 3, and variable frequency-dividing oscillator 2 oscillates a frequency, which is obtained by adding the natural frequency and the transmission signal frequency, and applies this frequency to balanced modulator 3. Next, the output of balanced modulator 3 is caused to pass through low-pass filter 6 which stops passage of frequencies higher than the fixed frequency, and a frequency of the difference between the variable frequency-dividing oscillation frequency and the fixed frequency is obtained as the transmission signal output. In case of receiving, a frequency obtained by adding the receiving frequency and the center frequency of band-pass filter 4 is applied from variable frequency-dividing oscillator 2 to balanced modulator 3. When the receiving frequency is input from input terminal 1, the difference between the variable frequency-dividing oscillation frequency and the receiving frequency drops as the center frequency of band-pass filter 4 and appears at receiving output terminal 5.

10. 发明专利

JPS5640336A SQUELCH SYSTEM IN MOBILE COMMUNICATION 失效
公开(公告)号：JPS5640336A
公开(公告)日：1981-04-16
申请号：JP11595279
申请日：1979-09-10
申请人： NIPPON TELEGRAPH & TELEPHONE , JAPAN RADIO CO LTD , ANRITSU ELECTRIC CO LTD
发明人： TAKAMURA MITSURU , NISHIE SHIYOUZOU , HASEGAWA YOSHIHIKO , WATANABE KAZUYOSHI
IPC分类号： H04B1/10 , H04B1/40 , H04B7/26 , H04W64/00 , H04W72/04 , H04W76/02 , H04W88/02
摘要： PURPOSE:To extend a service permission zone, by setting the squelch level to a value lower than the connection conditional squelch level during service. CONSTITUTION:During service, mobile station 10 moves in the arrow direction and goes over the range of the solid line and enters zone Z1'. Once the connection service state is set, squelch level l1 is automatically lowered previously to squelch level l2 of service permission. Further, the receiving range in level l2 becomes zone Z1'. The zone of service permission is extended more than Z1 and becomes Z1' shown by the dotted line, and service is held until the station goes over this zone.

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