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51. 发明专利

JPS5255409A TIME DIVISION CHANNEL CONVERSION SYSTEM 失效
公开(公告)号：JPS5255409A
公开(公告)日：1977-05-06
申请号：JP13164575
申请日：1975-10-31
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SATOU HIROAKI , KOJIMA TAKUTO , NAITOU SHIYUNICHI , KUBOYAMA YOSHIO
IPC分类号： G06F1/12 , H04Q11/04
摘要： PURPOSE:The data pass memory and chnnel conversion memory are shared in order to reduce greatly the channel conversion memory.

52. 发明专利

JPS5255408A MEMORY SWITCH SYSTEM 失效
公开(公告)号：JPS5255408A
公开(公告)日：1977-05-06
申请号：JP13164475
申请日：1975-10-31
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NAITOU SHIYUNICHI , KOJIMA TAKUTO , SATOU HIROAKI , YUMIBA HIDEAKI
IPC分类号： H04Q11/04
摘要： PURPOSE:In the time division coversion system, sub-data pass memory is provided in roder to make it possible to combine general switchboard function with multiple distribution converging function.

53. 发明专利

JPS5255402A SIGNAL TRANSMISSION*RECEPTION UNIT 失效
公开(公告)号：JPS5255402A
公开(公告)日：1977-05-06
申请号：JP13163875
申请日：1975-10-31
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： SATOU HIROAKI , KOJIMA TAKUTO , NAITOU SHIYUNICHI , ARITA TAKEMI
IPC分类号： H04Q11/04
摘要： PURPOSE:The buffer memory of transmission and reception are shared at time division data switchboard in order to ensure an effective use of memory as well as to simplify the processing at central processor.

54. 发明专利

JPS5249701A CONNECTION SYSTEM OF SUBSCRIBER IN SAME HIGHWAY 失效
公开(公告)号：JPS5249701A
公开(公告)日：1977-04-21
申请号：JP12580775
申请日：1975-10-17
申请人： FUJITSU LTD
发明人： SATOU HIROAKI , KOJIMA TAKUTO , NAITOU SHIYUNICHI
IPC分类号： H04Q11/04
摘要： PURPOSE:The time slot converter is provided at output and input sides each in order to ensure economization of time division conversion system at the time of subscriber connection.

55. 发明专利

JPS5248407A TIME DIVISION CHANNEL CONVERSION SYSTEM 失效
公开(公告)号：JPS5248407A
公开(公告)日：1977-04-18
申请号：JP12475675
申请日：1975-10-15
申请人： FUJITSU LTD
发明人： SATOU HIROAKI , KOJIMA TAKUTO , NAITOU SHIYUNICHI
IPC分类号： H04Q11/04
摘要： PURPOSE:The data of 1-channel composed of plural bits is divided into two and is then stored in memory. In this way, the construction of data pass memory is made into half, thus ensuring economization.

56. 发明专利

JPS5248405A EFFECTIVE INFORMATION COLLECTION SYSTEM 失效
公开(公告)号：JPS5248405A
公开(公告)日：1977-04-18
申请号：JP12475875
申请日：1975-10-15
申请人： FUJITSU LTD
发明人： KOJIMA TAKUTO , HATSUTORI SHINJI
IPC分类号： H04L5/22 , H04J3/16
摘要： PURPOSE:Only the level change of each circuit is sent out to the transmission path in the order of occurrence. Thus, use efficiency of transmission path can be increased with a simple function, at the same time a special medium being eliminated even though a circuit of a different communication speed may mix.

57. 发明专利

JPH0217980B2 失效
公开(公告)号：JPH0217980B2
公开(公告)日：1990-04-24
申请号：JP9320981
申请日：1981-06-17
申请人： FUJITSU LTD
发明人： ASHIHARA SHUICHI , SHIRAI HITOSHI , KOJIMA TAKUTO
IPC分类号： H04M7/00 , H04J3/14 , H04Q11/04

58. 发明专利

JPS6031395B2 失效
公开(公告)号：JPS6031395B2
公开(公告)日：1985-07-22
申请号：JP2306778
申请日：1978-02-28
申请人： FUJITSU LTD
发明人： KOJIMA TAKUTO , OZAWA YUKIO
IPC分类号： H04Q11/04

59. 发明专利

JPS5829032B2 失效
公开(公告)号：JPS5829032B2
公开(公告)日：1983-06-20
申请号：JP16512578
申请日：1978-12-29
申请人： FUJITSU LTD
发明人： SHIBUYA KYOSHI , AYANO MITSUTOSHI , KOJIMA TAKUTO
IPC分类号： H04B3/20 , H04M3/56 , H04M9/00

60. 发明专利

JPS5738053A Power feeding system 失效
标题翻译：电力供电系统
公开(公告)号：JPS5738053A
公开(公告)日：1982-03-02
申请号：JP11378180
申请日：1980-08-19
申请人： Fujitsu Ltd
发明人： KOJIMA TAKUTO , AYANO MITSUTOSHI , TABU TAKASHI
IPC分类号： H04M19/00
CPC分类号： H04M19/005
摘要： PURPOSE:To make circuit integration feasible in a power feeding circuit and to reduce unbalanced grounding, by constituting electronic components only without using electromagnetic components such as chockes and transformers, for a power feeding circuit. CONSTITUTION:A voltage between terminals 1, 2 of a power feeding circuit SP is divided at a voltage division circuit VD, and the output voltage is charged to a voltage-current conversion circuit V-I via an LPF. Since resistors R2, R3 of the circuit VD are set to a sufficiently large value, the voltage dividing voltage by an AC voltage superimposed on the terminal 1 is made small and further smoothed at the LPF. Thus, even if the voltage at the terminal 1 is changed by an audio current, the change in the current flowing to the voltage-current conversion circuit V-I is almost zero, the AC impedance between the terminals 1, 2 of the circuit SP comes to the sum of the resistors R2 and R3, allowing to obtain sufficiently greater value, and requirements as the call current supply circuit can be satisfied.
摘要翻译：目的：为了使馈电电路中的电路集成成为可能，并且通过仅在不使用诸如插座和变压器的电磁部件的情况下构成电子部件来减少不平衡接地，用于馈电电路。构成：供电电路SP的端子1,2之间的电压在分压电路VD被分压，并且输出电压通过LPF被充电到电压 - 电流转换电路V-I。由于电路VD的电阻R2，R3被设定为足够大的值，所以通过叠加在端子1上的交流电压的分压电压变小，并且在LPF处进一步平滑化。因此，即使端子1的电压由音频电流变化，流向电压 - 电流转换电路VI的电流的变化几乎为零，电路SP的端子1,2之间的交流阻抗变为允许获得足够大的值的电阻器R2和R3的总和以及作为呼叫电流供应电路的要求。

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