专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS5596782A MULTIFREQUENCY CODE SIGNAL RECEIVING SYSTEM 失效
公开(公告)号：JPS5596782A
公开(公告)日：1980-07-23
申请号：JP421279
申请日：1979-01-17
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE
发明人： ENDOU YOSHIAKI , SHIN YOUICHI
IPC分类号： H04Q1/30 , H04Q3/42
摘要： PURPOSE:To enhance economization and simplify a system by controlling ''connection'' code transmission and receiving of a subscriber selection multifrequency code signal between the incoming register and the trunk by a DC signal and by controlling it between the trunk and signal transmission terminals by an AC signal. CONSTITUTION:A receiving station is constituted by incoming register 6 which receives a multifrequency code signal, trunk 4 which transmits and receives a signal communication control signal to and from the other party station, and incoming register link 5 which connects trunk 4 and incoming register 6. When the system is started by the other party station, the preparation completion signal to be transmitted from the receiving station to the other party station is a DC signal between incoming resister 6 and trunk 4, and thus DC signal is converted to an AC signal by trunk 4 and is transmitted. When receiving this AC signal, the selection signal transmission terminal starts transmission of the ''connection'' code. In the receiving station, the ''connection'' code is received by the incoming register, and the incoming register transmits information, which indicates that the ''connection'' code is received, to the trunk with the DC signal, and the trunk stops the AC signal when receiving the DC signal and instructs ''connection'' to the terminal above.

2. 发明专利

JPS5295107A SIGNAL TRANSMISSION SYSTEM 失效
公开(公告)号：JPS5295107A
公开(公告)日：1977-08-10
申请号：JP1143976
申请日：1976-02-06
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , FUJITSU LTD
发明人： TAKAMIKO MASARU , KOMURA KOUJI , NAKAMURA YUKIO , ENDOU YOSHIAKI , KOSEKI KIYOUJI
IPC分类号： H04L27/26 , H04Q1/44 , H04Q1/45
摘要： PURPOSE:To transmit multi-kinds signals of different time intervals to remote place with a pair of inter-office transmission channels, by using multifrequency signals as transmissions signals.

3. 发明专利

JPS5292409A CHARGING PULSE SUPPLY SYSTEM 失效
公开(公告)号：JPS5292409A
公开(公告)日：1977-08-03
申请号：JP907076
申请日：1976-01-30
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , HITACHI LTD , FUJITSU LTD
发明人： ENDOU YOSHIAKI , KOMURA KOUJI , ENDOU TAKENORI , KANO HARUKIYO , KOSEKI KIYOUJI
IPC分类号： H04M15/00
摘要： PURPOSE:To enable the supply of charging pulse with different period at an arbitrary time point, by providing basic pulse selecting circuit.

4. 发明专利

JPS56123158A TRANSMITTED INFORMATION CONFIRMATION SYSTEM 失效
公开(公告)号：JPS56123158A
公开(公告)日：1981-09-28
申请号：JP2694380
申请日：1980-03-04
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE
发明人： IKEDA SABUROU , ENDOU YOSHIAKI , UCHIYAMA SUZUO , NAKAMURA MASANORI
IPC分类号： H04M3/00 , H04M3/56 , H04Q3/00
摘要： PURPOSE:To confirm control information between a terminal and switchboard and between switchboards, by providing the switchboard of a picture interchange system for television conventions with a function of remembering that an indication is made, a function of receiving an answer, and a function of erasure after the completion of control operation. CONSTITUTION:To repeater station EXR, three terminal stations EXTA-EXTC are connected. Then, independent control operation is performed, including information transmission to terminals, by the indication source of one of terminals. At each terminal station equipping the terminal having sent an indication, controller M is provided which functions to remembering that the indication is made, and to receive an answer from the terminal station having sent the indication. Further, it is provided with a function of sending back the end or result signal of the control after the control operation, and while the indication generation memory contents of the terminal station having sent the indication are erased, an indication end signal is sent to the indication sending terminal.

5. 发明专利

JPS5656091A SCANNING CIRCUIT SYSTEM 失效
公开(公告)号：JPS5656091A
公开(公告)日：1981-05-16
申请号：JP13188579
申请日：1979-10-15
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , NIPPON ELECTRIC CO , FUJITSU LTD
发明人： SATOU ISAO , MIZUNO TADASHI , OOOKA TADAO , UCHIDA TATSUO , ENDOU YOSHIAKI , TOMINAGA SHIYUNICHI
IPC分类号： H04Q3/42 , H04Q3/72
摘要： PURPOSE:To improve reliability by voltage-dividing a voltage induced across the secondary winding of a pulse transformer, provided corresponding to columns of a matric circuit for current detection, by electric current flowing through the primary winding. CONSTITUTION:For detecting electric current flowing to line C, pulse transformer T1 only is provided corresponding to columns of scanned contacts arranged in a matrix. Electric current flowing to terminal 1-2 of pulse transformer T1 when contact (b) of trunk circuit 1 is in operation is twice as much as when contact (m) is in operation. To terminal 3-4 of pulse transformer T1, electric current flows in reverse proportion to the winding ratio of pulse transformer T1. This current is voltage- diviced by resistances R1 and R2 and detected by amplifier AMP0 and AMP1 having one input terminal used for reference voltage input, so that the difference in the above-mentioned current can be detected.

6. 发明专利

JPS5610790A SIGNAL DECISION SYSTEM 失效
公开(公告)号：JPS5610790A
公开(公告)日：1981-02-03
申请号：JP8624279
申请日：1979-07-06
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , HITACHI LTD , FUJITSU LTD
发明人： ENDOU YOSHIAKI , MIZUNO TADASHI , OOKAWA HIROYUKI , KUSUNOKI FUMIAKI , KUBO MASAHIDE
IPC分类号： H04Q1/20 , H04Q3/42
摘要： PURPOSE:To make a signal decision of high reliability by eliminating an error decision due to a noise similar to an information signal by connecting a receiving circuit to a channel only in minimum required time during information-signal reception. CONSTITUTION:After the existence of a coin is detected by inverting the polarity of a charging pulse, whether a loop is formed at the side of telephone set TEL is discrminated in a certain-time elapse at the point in time of TM-relay release; when the loop is formed, signal reception is made ready and when not, the loop is broken at the point in time of the release of relay TM without connecting a receiver. Then, relay A is not in operation, relay RECC never operates, and relay RL operates, so that the following processing operation will start. Since relay RECC will not operate, the connection of the receiver to the channel is prevented and the possibility that a similar signal is misjudged as a coin-receipt end signal is eliminated perfectly.

7. 发明专利

JPS55136784A COMMUNICATION CIRCUIT OF TELEPHONE EXCHANGE 失效
公开(公告)号：JPS55136784A
公开(公告)日：1980-10-24
申请号：JP4463879
申请日：1979-04-12
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , HITACHI LTD , FUJITSU LTD
发明人： ENDOU YOSHIAKI , DOI MIKIO , UCHIDA TATSUO , KUSUNOKI FUMIAKI , UMAGAMI MASAO
IPC分类号： H04Q3/42 , H04M17/00 , H04Q3/00
摘要： PURPOSE:To enable to directly connect the mercury relay in series with the communication line, by preventing the attenuation of communication through the connection of capacitor in parallel with the communication line between mercury relays and using the mercury relay having the characteristics similar to the normal A position relay. CONSTITUTION:The DC signal delivered from the exchanger EX is identified with the telephone set loop and the mercury relay LP or RV, and after that, the frequency outside the communication band delivered from the public telephone set TEL is identified with the frequency detection circuit via the AC signal pick up circuit A. In this case, the capacitor C is connected between the mercury relays LP and RV connected in series with the communication lines A1,A2;B1,B2 to avoid the attenuation of the communication.

8. 发明专利

JPS5292410A STATIONNTOOSTATION INFORMATION TRANSFER SYSTEM 失效
公开(公告)号：JPS5292410A
公开(公告)日：1977-08-03
申请号：JP907176
申请日：1976-01-30
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE , OKI ELECTRIC IND CO LTD , HITACHI LTD , FUJITSU LTD
发明人： ENDOU YOSHIAKI , MINAASHI KAZUTETSU , ENDOU TAKENORI , TAKAMIKO MASARU , KUME HIRONOBU
IPC分类号： H04M7/00 , H04M15/00 , H04Q1/30
摘要： PURPOSE:To enable the transfer of band information more than nine, by reducing the number of repeater lines among telephone exchange stations.

9. 发明专利

JPS5671361A EXCHANGING SYSTEM FOR TELEVISION CONFERENCE TELEPHONE 失效
公开(公告)号：JPS5671361A
公开(公告)日：1981-06-13
申请号：JP14742479
申请日：1979-11-14
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE
发明人： ENDOU YOSHIAKI , IKEDA SABUROU , NAKAMURA AKINORI , UCHIYAMA SUZUO
IPC分类号： H04M3/00 , H04M3/56 , H04N7/14 , H04N7/15
摘要： PURPOSE:To enable the information exchange for the remotely located parties each other as if said parties were at the conference together, by providing picture brancher and audio branching and mixing device with a relay station so that three or more terminal stations can mutually perform the communication of audio and video at the same time. CONSTITUTION:A relay station 4 is rovided with a video brancher 2 and an audio branch and mixer 3. Thus, as to picture, the video information of the terminal of the station itself is pictured on a TV screen of opposing station terminal, and either one of a plurality of opposing terminals is pictured on a TV screen of the terminal of the station itself. On the other hand, as to audio, the audio informaion of the terminal of the station itself is all fed to the opposing terminal, allowing to listen to the opposing party entirely, and the audio information listened to the itself is objective to the audio information transmitted with the terminal of opposing stations entirely. Thus, by the simultaneous communication of picture and audio mutually for three or more terminal stations, the information conversion the same as a conference held at the same location can be made for parties at remote locations.

10. 发明专利

JPS5521627A AUTOMATIC TEST SYSTEM FOR KEY LINE SUBSCRIBER 失效
公开(公告)号：JPS5521627A
公开(公告)日：1980-02-15
申请号：JP9453578
申请日：1978-08-04
申请人： OKI ELECTRIC IND CO LTD , NIPPON TELEGRAPH & TELEPHONE , NIPPON ELECTRIC CO , HITACHI LTD , FUJITSU LTD
发明人： SAKAZUME WATARU , TANAKA TOSHIO , ENDOU YOSHIAKI , SHIMADA JIROU , MATSUMOTO YUUZOU
IPC分类号： H04M3/26 , H04M3/30
摘要： PURPOSE:To avoid to test the vacant slave number lines of the key line when the subscriber is busy, when the automatic test control unit ACT tests the key pilot number subscriber. CONSTITUTION:When the tested subscriber number is the pilot number subscriber which selects the key selection, the memorization of the PL information in the memory MEM memorizing the test information corresponding to the pilot number, operates, the PL relay. Even if the tested subscriber is busy with the path of ground- sub-pl-ac with the controller CONT, the interruption connection information (NOK) relay compulsively continuing the connection is operated to cut off the supply leads of the power supply operating the number group detection circuit NG. If the pilot number subscriber is busy, BTR relay is operated and restored with the operation of the RL(connected sequence stop information) relay in the marker M.

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