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1. 发明专利

JPS5178145A DEETAHENKANSOCHINI OKERU BATSUFUAKYOYOHOSHIKI 失效
公开(公告)号：JPS5178145A
公开(公告)日：1976-07-07
申请号：JP349075
申请日：1974-12-27
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , HITACHI LTD
发明人： AKAO TAKASHI , YOSHIDA SHINICHIRO , YAMAZAKI SHINJI , NARA EIZO , ARAI SHIGERU , NISHIJIMA TOMIHISA
IPC分类号： G06F5/06 , G06F13/00 , G11C7/00

2. 发明专利

JPS6072450A LINE CONTROL SYSTEM 失效
公开(公告)号：JPS6072450A
公开(公告)日：1985-04-24
申请号：JP18142283
申请日：1983-09-29
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , NIPPON ELECTRIC CO
发明人： AKAO TAKASHI , TOYAMA TSUGIO , HOSHIDA KATSUNORI , ISHIKAWA KAZUNORI , KAWATANI IKUO
IPC分类号： G06F13/00 , H04L13/00 , H04L29/04
摘要： PURPOSE:To attain ease of extending job of a unit by connecting a unit mounting section and a selection with a connecting line having the maximum number of storage lines per unit and providing an address converting section between an address generating section and the selection section. CONSTITUTION:The selection section 13 and the unit mounting section are connected in advance by mXn of connecting lines S11-Smn, where (m) is the maximum mounting number of the units 14 and (n) is the maximum number of storage lines per unit, and the address generating section 12 is constituted to generate an address signal corresponding to the maximum number storage line (p). The address converting section 15 consists of memories or the like, the address signal is converted to designate a line individual section of the mounted units and its signal is supplied to the selection section 13. An address designating the line individual section is written in the said memory MEM. Thus, the connection between the selection section 13 and the individual section is performed by only mounting the units to the unit frame, the address signal is converted at the conversion section 15 by writing the address of the line individual section in the unit to the memory MEM, and the line individual section is designated without designating an idle connecting line.

3. 发明专利

JPS59223046A DATA TRANSFERRING SYSTEM 失效
公开(公告)号：JPS59223046A
公开(公告)日：1984-12-14
申请号：JP9580983
申请日：1983-06-01
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , NIPPON ELECTRIC CO
发明人： AKAO TAKASHI , IMAI KAZUO , SHIMOMUKAI KOUICHI
IPC分类号： H04L13/08 , H04L29/10 , H04L13/00
摘要： PURPOSE:To transfer a data at a high speed and to increase the number of circuits which can be contained, by constituting so that a processing device receives in parallel only effective data from a data accumulating circuit of an IF circuit basing on a reception request signal and an output of a byte number counting circuit of the IF circuit. CONSTITUTION:In case a data transferred in series from a communicating device 1 is less than (n) bytes, for instance, in case a data Dd of (m) (n>m) bytes is transferred, when a data accumulatin circuit 2-1 of an IF circuit 2 accumulates a data of (m) bytes, a byte number counting circuit 2-2 decides it as end of accumulation by receiving the first one byte signal of an error detecting redundant bit FCS, outputs a byte number BN=(m) of an effective data inputted to the circuit 2-1, and simultaneously, gives an accumulation end signal E to a reception request signal generating circuit 2-3. When E is received, the circuit 2-3 outputs a reception request signal R, and a processing circuit receives only a data of (m) bytes from the circuit 2-1. When a block is continued by (n) bytes or more, no reception request is outputted unless a data of (n) bytes is accumulated in the circuit 2-1, therefore, it will do that a reception processing speed of the processing device is low.

4. 发明专利

JPS58123227A SIGNAL DETECTING CIRCUIT 失效
公开(公告)号：JPS58123227A
公开(公告)日：1983-07-22
申请号：JP566082
申请日：1982-01-18
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , NIPPON ELECTRIC CO
发明人： TOYAMA TSUGIO , AKAO TAKASHI , HOSHIDA KATSUNORI , ISHIKAWA KAZUNORI , MIYASHITA TETSUO
IPC分类号： H03K5/13 , G01R23/15 , G06F3/12 , H03K5/153 , H03K5/19 , H04M1/00 , H04M1/27
摘要： PURPOSE:To facilitate IC implementation by detecting a constant-frequency signal which is intermitted repeatedly through digital processing. CONSTITUTION:The input signal 1 of specific frequency which is intermitted at a specific period is digitized by an AD converter 2 and inputted to a frequency detector 3 which receives a high-speed clock 4. A monostable multivibrator 5 which outputs a little bit longer pulses than a signal frequency to be detected, a counter 6 and an FF7 generate output when the frequency of the input signal is greater than a prescribed value. A counter 8 and an FF9 which receive a clock 13 detect the prescribed-period continuation of the input signal 1. A decoder 10 and an FF11 output a detection output signal when the input signal 1 has the prescribed frequency and a prescribed intermittence period. This circuit is used to detect a busy-back tone, etc., in a telephone system.

5. 发明专利

JPS58123263A TRANSMISSION SYSTEM FOR MODULATED SIGNAL 失效
公开(公告)号：JPS58123263A
公开(公告)日：1983-07-22
申请号：JP638782
申请日：1982-01-19
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE , FUJITSU LTD
发明人： MURATA KOUICHI , KAWATANI IKUO , HOSHIDA KATSUNORI , ISHIKAWA KAZUNORI , AKAO TAKASHI
IPC分类号： H04L27/12 , H04L27/14
摘要： PURPOSE:To transmit plural frequency-modulated signals to a transmitting circuit with a simple constitution without providing frequency modulators corresponding to circuits, by connecting a frequency modulator to the transmitting circuit for frequency-modulated signals only when transmitted data is present. CONSTITUTION:A transmitting circuit group 1 for frequency-modulated signals is connected to a connection switching device 4 and when there is no transmitted data from transmitting circuits #1-#N, all the circuits #1-#N are connected to the carrier frequency oscillator 2 through the device 4 to generate a carrier frequency output. Once the transmitted data is generated, a controller 5 sends an indication to the device 4 through a control line 6 to switch and connect only the corresponding circuits #1-#N through the device 4 to a frequency modulator 3 and after the connection ends, the controller 5 sends the transmitted data to the modulator 3 through a signal line 7 to transmit the frequency- modulated signal to the circuit group 1. Thus, the transmitted data generated intermittently is sent out effectively through the simple constitution without provided modulators corresponding to the circuits.

6. 发明专利

JPS51148310A STANDBY SYSTEM TESTING METHOD OF MULTIPLEXING EQUIPMENT 失效
公开(公告)号：JPS51148310A
公开(公告)日：1976-12-20
申请号：JP7298475
申请日：1975-06-16
申请人： NIPPON TELEGRAPH & TELEPHONE , NIPPON ELECTRIC CO , FUJITSU LTD
发明人： YOSHIDA SHINICHIROU , YAMAZAKI SHINJI , ITSUSHIKI YOSHIHIRO , AKAO TAKASHI
IPC分类号： H04M3/26 , H04M3/24 , H04Q11/04
摘要： PURPOSE:Test speech paths and route setting functions without stopping the presently used system of duplexed multiplexing equipment by remote control from time-division speech path equipment.

7. 发明专利

JPS56149143A CIRCUIT QUALITY MONITOR SYSTEM 失效
公开(公告)号：JPS56149143A
公开(公告)日：1981-11-18
申请号：JP5267080
申请日：1980-04-21
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： AKAO TAKASHI , YATANI TADASHI
IPC分类号： H04L12/26
摘要： PURPOSE:To maintain transmission quality without spoiling communication service by sending a measuring signal from a switching equipment to a communication circuit in a radio communication state, by returning the measuring signal from the communication circuit to the switching equipment via a returning circuit on the communication circuit, and by receiving it by a receiving means. CONSTITUTION:To subscriber circuit terminator 2 connected to terminal equipment 1, data switching equipment 4 is connected via subscriber circuit 3 and to this switching equipment 4, error rate measuring instrument 5 is also connected to constitute data switching network N. This measuring instrument 5 is provided with measuring pattern generating and sending circuit 51, measuring pattern receiving circuit 52, collating circuit 53, and processing part 54 to monitor the communication state of circuit 3 at any time by detection part 41 provided to switching equipment 4. Then, a signal closing returning circuit 21 is sent from measuring instrument 5 to terminator 2 via circuit 3 and a measuring pattern is sent from circuit 51; and the pattern returned by circuit 21 is received by circuit 52 and then collated by circuit 53 with the sent pattern to maintain the excellent transmission quality of circuit 3.

8. 发明专利

JPS56132858A SUBSCRIBER`S LINE SIGNAL SYSTEM 失效
公开(公告)号：JPS56132858A
公开(公告)日：1981-10-17
申请号：JP3709180
申请日：1980-03-24
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： AKAO TAKASHI , TOMITA SHIYUUJI , HIRAMATSU YUKIO
IPC分类号： H04M3/00 , H04L12/52 , H04Q11/04
摘要： PURPOSE:To connect two or more terminals at the same time, by time division- multiplexing a network control signal and a communication data between terminals, and making independent both the signals. CONSTITUTION:When a subscriber sends out a request signal to the switchboard 2 in the course of communication a data between data terminals, the request signal is transferred to the switchboard through the connection route of the network control signal transmission and receiving circuit 5-multidemultiplexer 4-subscriber's line 11-demultiplexer 6-the control signal transmission and receiving circuit 8. That is to say, the network control signal and the communication data are time division- multiplexed, both the signals are made independent, and both the signals are not restricted mutually. Accordingly, a control signal is sent freely when a data is being communicated.

9. 发明专利

JPS56149144A CIRCUIT QUALITY MONITOR SYSTEM 失效
公开(公告)号：JPS56149144A
公开(公告)日：1981-11-18
申请号：JP5267180
申请日：1980-04-21
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： AKAO TAKASHI , YATANI TADASHI
IPC分类号： H04L12/26
摘要： PURPOSE:To maintain transmission quality without spoiling communication service offered to subscribers, by monitoring a signal for the communication state of a terminal equipment, transmitted from the terminal in the communication state to a switching equipment via a communication circuit, all the time by the switching equipment. CONSTITUTION:To subscriber circuit terminator 2 connected to terminal equipment 1, data switching equipment 4 is connected via subscriber circuit 3 and to detection part 41 provided to switching equipment 4, quality measurement part 5 is connected to constitute data switching network N. Switching equipment 4 is provided with switching part 42 together with detection part 41, which monitors all the time a signal for the communication state of terminal equipment 2 in the communication state transmitted from terminal 2 to switching equipment 4 via circuit 3. When the signal showing the communication state is detected by detection part 41, quality measurement part 5 is actuated to collate the signal format, indicating the normal no-communication state, with the communication state detected by detection part 41, so that the transmission quality of circuit 3 will be maintained without spoiling the communication service effered to subscribers.

10. 发明专利

JPS56132843A SUBSCRIBER`S LINE SIGNAL SYSTEM 失效
公开(公告)号：JPS56132843A
公开(公告)日：1981-10-17
申请号：JP3709080
申请日：1980-03-24
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： AKAO TAKASHI , TOMITA SHIYUUJI , HIRAMATSU YUKIO
IPC分类号： H04L29/14 , H04L12/00
摘要： PURPOSE:To realize a communication available signal economically and also accurately, by utilizing a specific pattern and deciding that start of communication has been permitted, when the pattern has arrived from the other terminal. CONSTITUTION:The switchboard 2 sends out the same fixed pattern as that which has been sent out by the A terminal and the B terminal 3, to both the terminals for some time, and subsequently, sends out a signal which can be clearly discriminated from a fixed pattern such as, for instance, al l1, to both the terminals. After that, the path of the switchboard 2 is switched to (f) from (e). As a result, a pattern of the other terminal flows into the down line (c) of the A terminal 1 and the down-line (h) of the B terminal 3, it is detected by the pattern change detecting circuits 5, 8, and it is decided that a data communication between the terminals has been permitted. After that, a data is communicated between the terminals.

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