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2. 发明专利

JPS516405A 失效
公开(公告)号：JPS516405A
公开(公告)日：1976-01-20
申请号：JP7675774
申请日：1974-07-04
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE , HITACHI LTD , OKI ELECTRIC IND CO LTD , FUJITSU LTD
发明人： WATANABE YOSHITSUGU , YOSHIDA SHINICHIRO , HAYANO JUJI , OBARA SUSUMU , KOJIMA TAKUTO
IPC分类号： H04Q11/04 , H04L5/24 , H04L12/52

6. 发明专利

JPS58133067A LOCAL AREA NETWORK SYSTEM 失效
公开(公告)号：JPS58133067A
公开(公告)日：1983-08-08
申请号：JP1613082
申请日：1982-02-03
申请人： NIPPON ELECTRIC CO
发明人： WATANABE YOSHITSUGU
IPC分类号： H04L5/22 , H04L12/43 , H04Q11/04
摘要： PURPOSE:To accommodate distributed terminals very finely and more efficiently in comparison with accommodating by a node station, by providing a low-speed loop besides a high-speed loop. CONSTITUTION:A node station NS0 is provided with not only a node station remote control part NSRC but also a low-speed loop transmission line L-LOOP and a remote station RS having the line concentrating function. The control part NSRC performs signal processings of terminals similarly to a node station control part NSC and has the function for communication between node stations NS. In the remote station, data is sampled in a speed corresponding to the terminal speed and is put onto a PCM channel by a remote station control part RSC. A part of the PCM channel is used as an out channel to transmit the signal of the terminal. Thus, the local area network system for communication between terminals which are distributed in respective places is constituted efficiently.

7. 发明专利

JPS53141514A HIGHHSPEED INTERRFRAME TRANSMISSION CIRCUIT 失效
公开(公告)号：JPS53141514A
公开(公告)日：1978-12-09
申请号：JP5672177
申请日：1977-05-16
申请人： NIPPON ELECTRIC CO
发明人： MEGURO KENJI , WATANABE YOSHITSUGU , ABE KIYOSHI , YAMAGUCHI TAKEHIKO
IPC分类号： H04Q3/52 , H04Q11/04
摘要： PURPOSE:By detecting a starting pulse at each outgoing highway side, a data receiver circuit selects the optimum clock pulse to receive discriminatevely each communication data word on the high way, thereby transmitting data with high precision.

9. 发明专利

JPS60216657A FAULT SUPERVISORY SYSTEM OF EXCHANGE SYSTEM 失效
公开(公告)号：JPS60216657A
公开(公告)日：1985-10-30
申请号：JP7366784
申请日：1984-04-12
申请人： NIPPON ELECTRIC CO , NIHON DENKI SYSTEM KENSETSU KK
发明人： WATANABE YOSHITSUGU , WATANABE HISANORI
IPC分类号： H04M3/22 , H04M3/32
摘要： PURPOSE:To decide quickly a fault of an exchange controller and a central processing unit by providing a test call at each line group unit and activating each test call start with a shift so as to detect the presence of the response. CONSTITUTION:A test call start device 4 is connected to a line in line groups accommodated in the exchange controller 1, a test call is generated automatically at a prescribed period and if an expected response is not obtained from the controller 1, the device 4 transmits a fault signal to a fault supervisory device 5. The device 5 transmits the fault signal to the central processing unit 3, eliminates the controller 1 corresponding to the fault signal and gives the result to a central processing unit fault discriminating device 6. It is decided that the central processing unit 3 is at fault when the device 6 receives generation of a fault from the device 5 for prescribed number of times within a prescribed time by shifting the time of test call start from the device 4 by T/n each, where (n) is the total number of the devices 4 and T is the test period.

10. 发明专利

JPS57135548A TIME-DIVISION DATA INTERCHANGE SYSTEM 失效
公开(公告)号：JPS57135548A
公开(公告)日：1982-08-21
申请号：JP2198981
申请日：1981-02-17
申请人： NIPPON ELECTRIC CO
发明人： WATANABE YOSHITSUGU
IPC分类号： H04Q11/04 , H04L12/52
摘要： PURPOSE:To absorb differences in signal system and timing of every circuit through software in a control system for a circuit switching type time-division data exchange, by providing a microprocessor to a subscriber circuit unit. CONSTITUTION:Transmitted data from a transmission side data equipment DTE is processed through the level conversion of a subscriber device LCU, switched by a time-division switch TDSW, and processed again through the level conversion of the device LCU to be received by an incoming-side terminal DTE. The level variation of the terminal DTE during calling or on-hook operation is level- converted by a subscriber circuit LC, and converted series to parallel to be fetched into a microcomputer muP and a memory MEM; and it is compared with stored old data and when calling or disconnection is detected, the detection result is reported to a controller SPC via an interface INF. A signal from the controller SPC to a circuit and its level are fetched into the memory MEM to be sent to the terminal DTE under the program control of the computer muP.

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