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1. 发明专利

JPH02907B2 失效
公开(公告)号：JPH02907B2
公开(公告)日：1990-01-09
申请号：JP10078980
申请日：1980-07-23
申请人： FUJITSU LTD
发明人： MINAMITANI EIJI , KOJIMA TAKUTO , KOBAYASHI YUKIO
IPC分类号： H04M3/02 , H04M3/06

2. 发明专利

JPS5932943B2 JPS5932943B2 - 失效
公开(公告)号：JPS5932943B2
公开(公告)日：1984-08-11
申请号：JP13448479
申请日：1979-10-17
申请人： Fujitsu Ltd
发明人： ISHIKAWA HIROSHI , KOJIMA TAKUTO , MINAMITANI EIJI
IPC分类号： H04Q1/54 , H04M19/00 , H04Q11/04 , H04Q11/06
CPC分类号： H04Q11/06

3. 发明专利

JPS5843956B2 失效
公开(公告)号：JPS5843956B2
公开(公告)日：1983-09-30
申请号：JP13844379
申请日：1979-10-26
申请人： FUJITSU LTD
发明人： KONO HISAO , KOJIMA TAKUTO , AYANO MITSUTOSHI , TABU TAKASHI
IPC分类号： H04M3/22 , H04M3/24 , H04M3/26 , H04Q11/04

4. 发明专利

JPS57210754A SETTING SYSTEM FOR ORDER LINE 失效
公开(公告)号：JPS57210754A
公开(公告)日：1982-12-24
申请号：JP9623281
申请日：1981-06-22
申请人： FUJITSU LTD
发明人： KOJIMA TAKUTO , SHIBATA YUUJI , MAKIYAMA TAKAO
IPC分类号： H04M3/22 , H04M3/00 , H04Q1/20 , H04Q11/04
摘要： PURPOSE:To eliminate the need for an order line, by using a spare line to establish the order line. CONSTITUTION:A master station CO and a remote line concentration station RLU of a digital exchanger are connected with normal use and spare lines L1 and L2, subscribers S1-Sn of the RLU are digitized with a line concentration network RNW and can communcate with a master station subscribers S0 via a normal/spare selector SELR, one of digital trunks DTR1 and DTR2, one of lines L1 and L2, one of digital trunks DTC1 and DTC2, a normal/spare selector SELC, a digital channel network NW and a subscriber circuit LC. A telephone set for order line, typewriters MC and MR and TYPR and TYPC can be connected via order line circuits SLGR and SLGC only when the line L1 is used for communication.

5. 发明专利

JPS56120288A LINE CONTROL SYSTEM 失效
公开(公告)号：JPS56120288A
公开(公告)日：1981-09-21
申请号：JP2335280
申请日：1980-02-28
申请人： FUJITSU LTD
发明人： NAITOU SHIYUNICHI , KOUNO HISAO , ASHIHARA SHIYUUICHI , OZAWA YUKIO , KOJIMA TAKUTO
IPC分类号： H04Q11/04
摘要： PURPOSE:To increase the antinoise performance in the line corresponding section and to reduce the load of controller at initial set, by writing in the line control information every line with the 1st period and making line control through sequential readout in a period shorter than the 1st period. CONSTITUTION:The write-in operation is made in synchronizing with the period ts/ n of the clock (where; n is the number of subscriber lines and ts is the period of software). The line control information written in the refresh memory 45 is read out with the clock having the period th/n (where th is the period of hardware) from the clock generator 46 and fed to the demultiplexer (DMPX)52 of the line corresponding control section 50 through multiplex at the shift register. DMPX52 shares the line control information in multiplex to each line in sycnrhonizing with the clock having the period of th/n to control FFs in each line correspondence circuit. Thus, since the line control information is fed to the control section 50 in multiplex, the number of signal lines between the common control section and the line corresponding section can be decreased.

6. 发明专利

JPS5662498A TEST SYSTEM FOR CHANNEL MEMORY 失效
公开(公告)号：JPS5662498A
公开(公告)日：1981-05-28
申请号：JP13844379
申请日：1979-10-26
申请人： FUJITSU LTD
发明人： KOUNO HISAO , KOJIMA TAKUTO , AYANO MITSUTOSHI , TABU TAKASHI
IPC分类号： H04M3/22 , H04M3/24 , H04M3/26 , H04Q11/04
摘要： PURPOSE:To perform test for channel memory, by forming test channels between test devices, so that the test channels can be formed sequentially over the entire address of channel memory by address conversion. CONSTITUTION:Test channels are provided by designating an arbitrary time slot between test devices. The write-in address conversion circuit WACV in the address converter ADCV converts the write-in address from the write-in address counter CTR with the frame counter FCT greater by one address per one frame, and the test data is written in the channel memory SPM. Similarly, the readout address conversion circuit RACV converts the address from the readout address hold memory to read out the channel memory SPM. Thus, the channel memory SPM can be tested via test channels over the entire areas sequentially used.

7. 发明专利

JPS55153464A RINGER CONTROL SYSTEM 失效
公开(公告)号：JPS55153464A
公开(公告)日：1980-11-29
申请号：JP6206179
申请日：1979-05-19
申请人： FUJITSU LTD
发明人： KOUNO HISAO , KOJIMA TAKUTO , ITOU MASAAKI
IPC分类号： H04M3/02 , H04M19/02
摘要： PURPOSE:To avoid the increase in the ringer capacity by effective use of the ringer, by processing the ringer signal output source with the instruction of the exchange processing processor MPR in the switch module SM incorporating the signal processing processor SPR. CONSTITUTION:In the ringer control system of time sharing system, the ringer generator RG uses a plurality of types of ringers for time sharing multiplex. MPR instructs the subscriber number requiring call-out and the phase number of a ringer used to SPR, and SPR controls the ringer distributing circuit RD at the time of phase number designated from the sunchronizing signal SYNC and the ringer contact of the subscriber circuit LC synchronizingly, and delivers the ringer signal to the subscriber. MPR manages the usage state of the ringer signal in phase split for load balancing, and can select the capacity of RG in matching with the traffic of the overall system.

8. 发明专利

JPS5592066A ANTISINGING SYSTEM IN CONFERENCE SERVICE 失效
公开(公告)号：JPS5592066A
公开(公告)日：1980-07-12
申请号：JP16512578
申请日：1978-12-29
申请人： FUJITSU LTD
发明人： SHIBUYA KIYOSHI , AYANO MITSUTOSHI , KOJIMA TAKUTO
IPC分类号： H04B3/20 , H04M3/56 , H04M9/00
摘要： PURPOSE:To make antisinging possible with a simple circuit by dividing signals, which come around the hybrid transformer of a subscriber's circuit, into two groups and by mixing them so that they may be cancelled by each other. CONSTITUTION:A part of the service signal sent from telephone set A to the transmission side of hybrid transformer HA of subscriber's circuit LA is leaked to the transmission side of hybrid transformers HB-HN of another telephone set subscriber's circuit, and all of the signal is inputted to mixer circuit M1 assigned to telephone set A through the transmission path of each transmission side and is mixed and is inputted to the receiving side of hybrid transformer HA of telephone set A, and a part of the signal is leaked to the transmission side to constitute a singing loop. When the number of participating subscribers is increased, the quantity of echo is incerased to cause danger of singing. Therefore, input ends for output signals from transformers HA-HN of participating subscriber's circuits are divided into two groups in respective input parts of mixer circuits M1-Mn, and signals inputted to one group are inverted for signals inputted to the other group, and they are mixed. Thus, singing is prevented by cancelling signals coming around by each other.

9. 发明专利

JPS54115007A LINE MONITOR SYSTEM 失效
公开(公告)号：JPS54115007A
公开(公告)日：1979-09-07
申请号：JP2307178
申请日：1978-02-28
申请人： FUJITSU LTD
发明人： KOJIMA TAKUTO , MASUDA TOORU , YOKOTO TAKASHI
IPC分类号： H04Q11/04
摘要： PURPOSE:To perform the reduction in the complexity of wiring and pin net, by eliminating the specific conditional information output line at the correspondence part of line among the allocated lines. CONSTITUTION:The condition detection circuit SS and the loop detection circuit LD detects the DC signal from the line, the timer T performs partial output for a given time with the output, and the parallel series conversion buffer register PSBR converts the output signal into PCM signal including the DC signal recognizing pattern. Further, the selector SEL selects the register PSBR to make connection to the communication channel driven with the output of the timer and going to the time sharing switch network from line. Further, DC signal and AC signal from the line are transmitted to the communication channel and are identified with the information reception trunk connected to the communication channel. That is, by eliminating the specific conditional information output line at the circuit correspondence part of the allocated lines, the reduction in the complexity of wiring and pin net can be made.

10. 发明专利

JPS53148310A GAIN CONTROL SYSTEM BY PULSE WIDTH CHANGE 失效
公开(公告)号：JPS53148310A
公开(公告)日：1978-12-23
申请号：JP6365477
申请日：1977-05-31
申请人： FUJITSU LTD
发明人： TABU TAKASHI , KOJIMA TAKUTO , NAITOU SHIYUNICHI
IPC分类号： H04B3/06 , H04J3/08 , H04Q11/04
摘要： PURPOSE:To make unnecessary mechanically moving parts and to increase the reliability and ease to maintenance, by performing the gain adjusting control for audio signals demodulated digitally.

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