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21. 发明专利

JPS5444810A PREVENTIVE SYSTEM FOR MALFUNCTION 失效
公开(公告)号：JPS5444810A
公开(公告)日：1979-04-09
申请号：JP11143277
申请日：1977-09-16
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , HITACHI LTD
发明人： INOUE SABUROU , KASE ICHIROU , SUZUKI TOMIO , KAWATANI IKUO , OGAWA YOUICHI
IPC分类号： G06F11/10 , H04L1/00
摘要： PURPOSE:To prevent the malfunction of the inspection at the reception side in case of a trouble at the transmission side, etc., by inverting and sending out a redundant code at the transmission side and by initially setting a cyclic-code check circuit in the reciprocal state at the reception side when receiving signals normally. CONSTITUTION:At the transmission side, timing signal t1 from timing generating circuit TIM represents the transmission timing, and signal t2 represents the reset timing of cyclic-code CRC generating circuit CDR; and then, signal t4 is applied to gate G2, to detemine the CRC transmission timing. At the reception side, on the other hand, signal t1, from timing generating circuit TM is transmitted to reception register RBR, and signal t2, is to CRC check circuit DCR to determine the reception timing and CRC arithmetic timing. Namely, the redundant code is inverted at the transmission side and then sent out, and at the reception side, circuit DCR for reception information is set initially in the reciprocal state at the time of the normal reception of information. Consequently, the malfunction can be prevented through the inspection at the reception side in case of the trouble at the transmission side.

22. 发明专利

JPS60186096A MOUNTING STRUCTURE FOR RADIATION NOISE PREVENTING RUBBER 失效
公开(公告)号：JPS60186096A
公开(公告)日：1985-09-21
申请号：JP4030884
申请日：1984-03-05
申请人： HITACHI LTD
发明人： YOSHIMURA KIYOSHI , OGAWA YOUICHI , HIGAKI YUUJI , MATSUMOTO SATOSHI
IPC分类号： H05K9/00

23. 发明专利

JPS54137207A SENDING CIRCUIT OF COIN STORAGE SIGNAL 失效
公开(公告)号：JPS54137207A
公开(公告)日：1979-10-24
申请号：JP4424178
申请日：1978-04-17
申请人： HITACHI LTD
发明人： OGAWA YOUICHI
IPC分类号： G07F9/00 , H04M17/00 , H04M17/02
摘要： PURPOSE:To secure the noise deletion with use of one filter instead of conventional double filters by inserting one unit of the inductance element into the base circuit of the transistor. CONSTITUTION:When relay Q is operated through signal distributor SD, a loop is formed as battery E - capacitor C1 - inductance element L1 - R - contact q - contact p - battery E. Thus, capacitor C1 starts discharge, but a sudden current change is avoided since L1 is inserted. So the discharge current increases smoothly, and accordingly the current decreases smoothly between the collector and the emitter of transistor Tr. Then with operation of relay P through SD, capacitor C1 is charged in the route of E - C1 - L1 - R -q - P - P - earth, but a sudden current change of the charge starting time is avoided by L1 to secure a smooth current change. The same smooth current change is secured also in the case of release of relay Q and P, and so the high frequency noise caused by the sudden current change can be deleted.

24. 发明专利

JPS54137209A RINGGOFF DETECTION SYSTEM 失效
公开(公告)号：JPS54137209A
公开(公告)日：1979-10-24
申请号：JP4424378
申请日：1978-04-17
申请人： HITACHI LTD
发明人： OGAWA YOUICHI
IPC分类号： H04Q3/42 , H04Q3/00 , H04Q3/72
摘要： PURPOSE:To detect the ring-off and thus to avoid ineffective holding of the unit by providing a detecting means to the central office trunk to detect the current change which is caused when the connection switch is given to the subscriber terminal storing the central office trunk from the talking trunk to the subscriber circuit. CONSTITUTION:With on-hook of the calling subscriber connected to the telephone exchange side, switching contact X1 and X2 operate through the existing method to give a connection switching to central office trunk COT form relay A within in- coming trunk ICT to relay LR within subscriber circuit LC. Internal resistance 1KOMEGA of LR is inserted to the side of line A, and the earth is connected to the side of line B. Thus, line A and B are unbalanced. And the potential of intermediate tap S in coil L features a different value from power source E2. As a result, the current flows to mercury relay P for operation of P. Whit operation of P, the ring-off is detected via the contact to release COT.

25. 发明专利

JPS53116004A BLOCK SYSTEM FOR UNIT CIRCUIT 失效
公开(公告)号：JPS53116004A
公开(公告)日：1978-10-11
申请号：JP3045577
申请日：1977-03-22
申请人： HITACHI LTD
发明人： UMEDA TOSHIHIKO , OGAWA YOUICHI
IPC分类号： H04M3/22 , H04Q3/545
摘要： PURPOSE:To simplify the work of maintennace, by blocking per one or a plurality of mounting units.

26. 发明专利

JPS59208968A Spare system of subscriber circuit in time division electronic exchange 失效
标题翻译：时分电子交换机中订阅电路的备用系统
公开(公告)号：JPS59208968A
公开(公告)日：1984-11-27
申请号：JP8281083
申请日：1983-05-13
申请人： Hitachi Ltd
发明人： OGAWA YOUICHI , OONUMA TATSUMASA , TANIGUCHI KOUICHI
IPC分类号： H04M3/22 , H04M3/12
CPC分类号： H04M3/12
摘要： PURPOSE:To obtain a spare system of a subscriber circuit with a short failure recovery time and excellent economy by operating a switching circuit provided to a failed subscriber circuit among switching circuits provided at each subscriber circuit when other subscriber circuit is failed to switch the subscriber circuit to a spare subscriber circuit. CONSTITUTION:It is supposed that a subscriber circuit SUBj1 in a subscriber circuit package Pj is failed and talking is disabled. In case of the application of the subscriber, the maintenance personnel applies a switching command by an input device such as typewriter. Then, the software operates switching circuits trj1, trj'1 and moves subscriber data of a failed subscriber to a spare subscriber circuit SUB00. Through the operation above, a series of lines of talking lines AOj1, BOj1 switching circuits trj1, tr'j1
摘要翻译：目的：通过在其他用户电路未能切换用户电路的情况下，通过在提供给每个用户电路的切换电路之间操作提供给故障用户电路的切换电路，获得具有短故障恢复时间和良好经济性的用户电路的备用系统到备用用户电路。构成：假设用户电路封装Pj中的用户电路SUBj1失败并且禁止通话。在应用用户的情况下，维护人员通过诸如打字机的输入设备应用切换命令。然后，软件操作切换电路trj1，trj'1，并将故障用户的用户数据移动到备用用户电路SUB00。通过上述操作，连接一系列通话线路AOj1，BOj1开关电路trj1，tr'j1 <通话线路A1j，B1j通话线A20，B20切换电路tr00，tr'00用户电路SUB00。当通过电子交换机的自动定期测试发现用户电路SUBij的故障时，通过软件自动实现切换操作。

27. 发明专利

JPS5210046A TRANSFER SYSTEM OF TELEPHONE CHARGE INFORMATION 失效
公开(公告)号：JPS5210046A
公开(公告)日：1977-01-26
申请号：JP8538775
申请日：1975-07-14
申请人： HITACHI LTD
发明人： OGAWA YOUICHI
IPC分类号： H04M15/00
摘要： PURPOSE:A method to transfer automatically the telephone charge information.

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