专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

JPS5428988A TRANSFER SYSTEM OF POWER SOURCE SHUTDOWN INFORMATION 失效
公开(公告)号：JPS5428988A
公开(公告)日：1979-03-03
申请号：JP9450677
申请日：1977-08-05
申请人： FUJITSU LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , HITACHI LTD
发明人： YAJIMA SHIYOUICHI , TAKEI AKIRA , MIYAMOTO KOUICHI , ASAKURA JIYUNJI , HOSHI TOORU
IPC分类号： H02H1/00 , H04Q9/00
摘要： PURPOSE:To provide an ease increase of the device to be observed with short circuit length of information transfer where the power shutdown information of the device to be observed is detected.

12. 发明专利

JPS5327309A TEST SYSTEM FOR COMMUNICATION PAT H CONTROLLER FOR TELEPHONE EXCHANGER 失效
公开(公告)号：JPS5327309A
公开(公告)日：1978-03-14
申请号：JP10157176
申请日：1976-08-27
申请人： HITACHI LTD
发明人： HOSHI TOORU
IPC分类号： H04M3/26 , H04Q1/20
摘要： PURPOSE:To enable small size and economy for the circuit, by commonly using the driving inspection circuit and the load inspection circuit.

13. 发明专利

JPS51136226A AAD CONVERTOR REDUNDANCY 失效
公开(公告)号：JPS51136226A
公开(公告)日：1976-11-25
申请号：JP5971375
申请日：1975-05-21
申请人： HITACHI LTD
发明人： HORIKI AKIRA , HOSHI TOORU
IPC分类号： H03M1/12 , H04J3/00 , H04Q11/04
摘要： PURPOSE:Economic system back-up by redundont system configuration according to the fault improtance.

14. 发明专利

JPS5138915A 失效
公开(公告)号：JPS5138915A
公开(公告)日：1976-03-31
申请号：JP11146274
申请日：1974-09-30
申请人： HITACHI LTD
发明人： KUWABARA HIROSHI , HORIKI AKIRA , HOSHI TOORU
IPC分类号： H04Q3/52 , H04Q11/04

15. 发明专利

JPS60167593A SIGNAL REPEATING SYSTEM 失效
公开(公告)号：JPS60167593A
公开(公告)日：1985-08-30
申请号：JP2168484
申请日：1984-02-10
申请人： HITACHI LTD
发明人： HOSHI TOORU , HIYAMA KUNIO
IPC分类号： H04Q11/04
摘要： PURPOSE:To enable transmission of circuit conditions efficiently by transmitting repetitively a channel consisting of a bit for transmitting sound information and that for transmitting data at every certain period and by utilizing a communication device to transmit and receive channel information between terminals. CONSTITUTION:The state of a circuit which an SLIC3 monitors is stored in a bit position S of a buffer 6 and accumulated in a buffer of an interface 7 in the same manner as a sound. When the channel number of a loop tranmission line becomes a preset one, the interface 7 transmits state signals of a sound and circuit to a loop transmission line. On the other hand, the state signal is accumulated in a buffer of an interface 10 by the channel number in terms of node 200, and transfered to a buffer 12 of a trunk 15. Here, sound bits are transmitted to a cordic 13, in which they are converted into an analog signal and transmitted to a telephone exchange.

16. 发明专利

JPS6042962A DATA COMMUNICATION SYSTEM 失效
公开(公告)号：JPS6042962A
公开(公告)日：1985-03-07
申请号：JP15014083
申请日：1983-08-19
申请人： HITACHI LTD
发明人： HOSHI TOORU , SUZUKI MICHIO , TAKENOUCHI HIROO , KONASE TOSHIAKI , HIYAMA KUNIO
IPC分类号： H04L29/06 , H04L12/00
摘要： PURPOSE:To obtain a data communication system attaining connection of an opposite party with the dial operation from a terminal device by providing a connecting means converter provided with a register having a serial/parallel converting function for transmitting and receiving data signal, a register for transmitting and receiving a control signal and a means controlling them between data terminal devices and a network. CONSTITUTION:A signal RS is set with a call request (state 1) from a start-stop data terminal device DTE1, the signal is written in a reception register R0 of a register 15, and the signal is read by an MPU16. The MPU16 writes ''1'' to a transmission shift register 13 so as to transmit continuously ''1'' from the said shift register 13. When a ''1'' signal on a line R is received from the network in response to it (state 2), it is received by a reception shift register 14 and it is read by the MPU16. The MPU16 conducts code conversion and parity bit conversion as required and writes a reception signal to the transmission shift register 13. Thus, numeric information is transmitted on a line T according to a clock from a clock circuit 17 via the said shift register 13.

17. 发明专利

JPS59228445A DATA TRANSMISSION SYSTEM 失效
公开(公告)号：JPS59228445A
公开(公告)日：1984-12-21
申请号：JP10259483
申请日：1983-06-10
申请人： HITACHI LTD
发明人： SUZUKI MICHIO , HOSHI TOORU , TAKENOUCHI HIROO , KONASE TOSHIAKI , HIYAMA KUNIO
IPC分类号： H04L29/10 , H04L12/00 , H04L11/02
摘要： PURPOSE:To reduce the number of signal lines between the network side and the terminal side by providing separately an interface converting device to the network side and the terminal side in connecting a data exchange network to data terminal devices in accordance with the protocol of the CCITT recommendations 21. CONSTITUTION:In connecting a data terminal device DTE having an X21 interface and a line terminator DCE of the data exchange network, interface converting devices CONV1, 2 are provided between both devices. The converting device CONV1 multiplexes the information on lines T and C from the terminal device DTE of the X21 interface, converts the result to manchester codes and the result is transmitted further to a line L while its transmitting speed is increased. On the other hand, the information from the device DCE is converted to Manchester decoding and demultiplexed into the information of the lines R and I and the result is transmitted to the terminal device DTE. The CONV2 of the device DCE conducts the similar operation. Thus, the number of signal lines between the terminal device DTE and the device DCE is decreased from 5 lines (used in a conventional system) into 1 line.

18. 发明专利

JPS57204697A SCANNING DEVICE 失效
公开(公告)号：JPS57204697A
公开(公告)日：1982-12-15
申请号：JP8969681
申请日：1981-06-12
申请人： HITACHI LTD
发明人： HOSHI TOORU
IPC分类号： H04Q1/02 , H04Q3/72
摘要： PURPOSE:To obtain an economical scanning device which is capable of reducing a mounting space in accordance with the number of scanning spots, by constituting a scanning matrix unit of one or plural circuits obtained by forming a scanning line and its corresponding line driving circuit in one body. CONSTITUTION:A driving circuit RD for driving each scanning line is circuit- contituted by forming it with a scanning line R in one body as scanning matrix units MTX00-MTXij. Each RD is driven by one of drivers Yo-Yi and one of Xo-Xj of a scanning driving part SCNDV, and scanning information of SCNP of a necessary scanning spot is read by a sense amplifier. As for the scanning matrix units MTX00-MTXij, a necessary number of units are mounted by each unit in accordance with a scale of a converter.

19. 发明专利

JPS57136892A CABLE CONNECTING METHOD IN EXCHANGE SYSTEM 失效
公开(公告)号：JPS57136892A
公开(公告)日：1982-08-24
申请号：JP2151981
申请日：1981-02-18
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , FUJITSU LTD
发明人： HOSHI TOORU , OGAWA YOUICHI , KUROIWA KUNIO , SUEHIRO FUMITAKA , SHIBUYA TADASHI , HIDAKA TOSHIO
IPC分类号： H04N9/68 , H04Q1/06
摘要： PURPOSE:To achieve continuity test of cables easily even with unmounted devices, by forming cables incorporated with a future output side cable, without cutting off an input cable to a planned unmounted device. CONSTITUTION:In an exchange system of unit type, an input side cable and an output side cable are installed to a frame 3 having unmounted devices. In this case, the length of a cable 5 under work connected to an input side terminal 2 is a total length of the input and output side, and another end of the cable 5 is directly connected to an output side terminal 2'. At the mounting of a unit 4, the cable 5 is cut off and connected to input and output terminals of the unit 4. Thus, the continuity test of the cable 5 can easily be done between the input terminals 2 and output terminals 2'.

20. 发明专利

JPS55165060A MISCHARGING PREVENTING SYSTEM 失效
公开(公告)号：JPS55165060A
公开(公告)日：1980-12-23
申请号：JP7230179
申请日：1979-06-11
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： HOSHI TOORU , OGAWA YOUICHI , MURAMATSU HARUHIKO
IPC分类号： H04M3/02 , H04M15/36 , H04Q3/42 , H04Q3/74
摘要： PURPOSE:To enable the noncharging of the caller by detecting the off-hook of the subscriber not being called subscriber at the collision of incoming and outgoing for the party line station, by providing the differential relay in series with the cumulative relay in the call-out signal trunk. CONSTITUTION:The differential relay P is provided in series with the cumulative relay A. When the trunk operates the pattern control relay S and calls out the party line B telephone set, and when the party line A subscriber hooks off for transmission, the transistor Q turns on and the relay F is operated. Next, the scanning unit TSCN detects it, restores the relay S and scans the contacts of the relays A, P with TSCN after restoring the relay F. Since the subscriber A is off-hooked and ground is incoming on both the lines of the terminals A, B, the operation of the relays A, P is detected, the off-hook of the subscriber A is informed, and busy tone is transmitted to the caller judging that no response from the subscriber B being the called party is present, and allowing the no charging.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式