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

JPH1075311A COMMUNICATION TERMINAL EQUIPMENT 失效
公开(公告)号：JPH1075311A
公开(公告)日：1998-03-17
申请号：JP18796897
申请日：1997-07-14
申请人： HITACHI LTD
发明人： MIZUHARA NOBORU , MORITA TAKASHI , HOSHI TORU
IPC分类号： H04M3/56 , H04L12/42 , H04M11/00
摘要： PROBLEM TO BE SOLVED: To send/receive a plurality of a kind of digital information between a plurality of an optional terminal equipment by using a control channel on an ISDN line and connecting an information channel to 1st and 2nd terminal equipments, respectively. SOLUTION: This terminal equipment is provided with a communication means that sends/receives control information via a control channel on an ISDN channel and controls 1st and 2nd information channels to be connected to 1st and 2nd terminal equipments respectively and with a communication means that connects an incoming channel of the 1st information channel and an outgoing channel of the 2nd information channel and connects an incoming channel of the 2nd information channel and an outgoing channel of the 1st information channel. Each terminal equipment connects two information channels 21, 22 on a digital subscriber line 2 to two different terminal equipments via an exchange 3 to configure a loop network, and the information is circulated by a loopback function of information channels, then the information sent from each terminal equipment is communicated with other terminal equipment in the network through multiple address communication or between two terminal equipments.

2. 发明专利

JPH09135309A ISDN TERMINAL EQUIPMENT 失效
公开(公告)号：JPH09135309A
公开(公告)日：1997-05-20
申请号：JP27798496
申请日：1996-10-21
申请人： HITACHI LTD
发明人： MIZUHARA NOBORU , MORITA TAKASHI , HOSHI TORU
IPC分类号： H04M3/56 , H04L12/02 , H04L12/18 , H04L12/42 , H04M11/00
摘要： PROBLEM TO BE SOLVED: To transfer information between optional terminal equipments in a network by providing a controller connecting a 1st information channel to a 1st connection destination via 1st and 2nd information channels and a control channel and connecting a 2nd information channel to a 2nd connection destination. SOLUTION: A subscriber terminal equipment 1 receives a digital voice signal from a subscriber terminal equipment 6 through an information channel 21 of a digital subscriber 2 via a multiplexer/demultiplexer 11 at its decoder circuit 12, converts the signal into an analog signal and an echo canceller circuit 13 eliminates a voice component of a talker of its own terminal equipment from the analog voice signal. The signal from the echo canceller circuit 13 is synthesized with the received voice signal at a mixing circuit 16, a coder circuit 17 converts the synthesized signal into a digital voice signal and it is sent to other subscriber terminal equipment 7. The terminal equipment 7 synthesizes the voice signal from the terminal equipment 1 with the voice of its own user and sends the synthesized signal to a terminal equipment 8, the terminal equipment 8 synthesizes the voice signal from the terminal equipment 7 with the voice of its own user and sends the synthesized signal to a terminal equipment 6. Thus, the conference telephone system is constituted.

3. 发明专利

JP2539409B2 失效
公开(公告)号：JP2539409B2
公开(公告)日：1996-10-02
申请号：JP2821087
申请日：1987-02-12
申请人： HITACHI LTD
发明人： HOSHI TOORU , MIZUHARA NOBORU , TSUMURA TOKUMITSU , MORITA TAKASHI
IPC分类号： H04L12/20 , H04L12/50

4. 发明专利

JPH04103249A ISDN SIGNAL PROCESSING SYSTEM 失效
公开(公告)号：JPH04103249A
公开(公告)日：1992-04-06
申请号：JP21890690
申请日：1990-08-22
申请人： HITACHI LTD
发明人： TSUMURA TOKUMITSU , MIZUHARA NOBORU , HIRAIWA KENJI , AZEYANAGI MIKISUKE
IPC分类号： H04L29/06 , H04M3/00 , H04M7/06 , H04M11/00 , H04Q1/30
摘要： PURPOSE:To allow the system to process a Q.931 signal under the condition of various processing protocols or the like without revision of a current Q.931 signal format by determining the processing condition (protocol) of the Q.931 signal having a specific call number, a designation system of the call number and the call number in advance between exchanges. CONSTITUTION:The cross reference between a specific call number set in a Q.931 signal and a protocol is defined among optional opposite equipments S1-S3 communicating the Q.931 signal in compliance with the CCITT and when the equipments S1-S3 receives the Q.931 signal having the call number, the equipments process the signal according to the protocol. Thus, a system to inform a processing condition of the sent Q.931 signal between the equipments connected by I interfaces 101,102 such as designation of priority processing to the opposite party is realized without adding new information (such as in- network header) to the Q.931 signal protocol. Thus, the equipments on both sides of the I interfaces process the Q.931 signal according to a predetermined protocol.

5. 发明专利

JPH03262368A APPLICATION EXECUTION CONTROL SYSTEM 失效
公开(公告)号：JPH03262368A
公开(公告)日：1991-11-22
申请号：JP6179990
申请日：1990-03-13
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： YAMAGISHI JUNKO , TSUZUKI TAKUO , MIZUHARA NOBORU , SAKUMA TETSUO , TSUNODA TOMOAKI
IPC分类号： H04M3/22 , G06F13/38 , H04M3/42 , H04M3/533 , H04Q3/545
摘要： PURPOSE:To dynamically start and stop each application program by using a control message so as to inform the start from the computer or its top to an exchange, allowing the exchange to store the information and replying the user in terms of the service. CONSTITUTION:An application control message is sent to an exchange by using each application program or a program controlling the application program at the start or stop of each application program executed in a computer 100. Then the exchange stores the state of each application program to an application management table 200 so that whether or not the service request from a subscriber is executed by the management table 200 is discriminated. Thus, each application program executed in the computer is individually started or stopped.

6. 发明专利

JPH03256434A CONTENTION CONTROL SYSTEM 失效
公开(公告)号：JPH03256434A
公开(公告)日：1991-11-15
申请号：JP5370290
申请日：1990-03-07
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： MIZUHARA NOBORU , TSUZUKI TAKUO , YAMAGISHI JUNKO , SAKUMA TETSUO , TSUNODA TOMOAKI
IPC分类号： H04Q3/545 , H04M3/00
摘要： PURPOSE:To prevent contention in the multiprocessor system of a computer by controlling the contention between terminal connection control instructed by the processor of an exchange and that instructed by the computer. CONSTITUTION:This system is comprised in such a way that the processor of the exchange 100 referes to a contention control memory 105 when the terminal connection control is instructed by the processor of the exchange 100 or the computer 110. Therefore, when the terminal connection control is executed, it is possible to recognize whether or not contradiction between the state of a terminal 108 and the latest state of the terminal 108 by an instruction result from an other side occurs in advance. Thereby, the contention in the terminal connection control between the processor of the exchange 100 and the computer 110 can be prevented occurring.

7. 发明专利

JPH03117144A COMMUNICATION SERVICE RESERVATION SYSTEM 失效
公开(公告)号：JPH03117144A
公开(公告)日：1991-05-17
申请号：JP25194489
申请日：1989-09-29
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： SAITO TORU , HOSHI TORU , MIZUHARA NOBORU , KATORI YUJI
IPC分类号： H04L29/08
摘要： PURPOSE:To make only one publication of a request for the first request by registering the request to a reservation queue when the execution of a request communication service is disabled, rejecting the setting of the call, informing the communication service start report to a request sender and setting the call when the execution of the request communication service is available. CONSTITUTION:The content of user/user information added to a SETUP message being a communication service request is extracted and whether or not the execution of the communication service is enabled is inquired about a state management section, and when the execution is disabled and a reservation registration request 47 is required, the request registration processing to a reservation queue is implemented and a fact of reservation registration to a request sender is added as additional information and a reject reply (REL COMP) message for call setting request is sent. When the the communication service is transited to an available state, one request is extracted from the reservation queue by the FIFO system and a communication application process 7 and a communication channel 5 to execute the request communication service are reserved and started via the state management section 9.

8. 发明专利

JPH0338152A FACSIMILE DESTINATION DESIGNATION SYSTEM 失效
公开(公告)号：JPH0338152A
公开(公告)日：1991-02-19
申请号：JP17178889
申请日：1989-07-05
申请人： HITACHI LTD
发明人： MIZUHARA NOBORU , HIRAIWA KENJI
IPC分类号： H04M3/54 , H04M3/00 , H04M11/00
摘要： PURPOSE:To send a facsimile test even when a facsimile number of a transmission destination is not known by providing a reference list between a telephone number of a telephone set and a facsimile number of a facsimile equipment near the telephone set and converting the said telephone number into a facsimile number when the information designating the telephone number is sent from the facsimile equipment. CONSTITUTION:Upon the receipt of an off-hook signal representing a dialing of a terminal equipment from a line, an exchange retrieves a line number conversion list based on the line number of the said line, a terminal attribute table is obtained, the dialing reception is sent and the accept of the dialing is informed. When a dial number designating a connection destination opposite terminal equipment is received from the dialing terminal equipment, the kind of the caller terminal equipment is discriminated based on the terminal type display on the terminal attribute table. When the terminal equipment is a facsimile equipment, a dial number conversion list 201 and the terminal attribute table are referenced and the type of the terminal equipment represented by a received dial number is discriminated, when a called terminal equipment is a telephone set, a nearby facsimile dial number 213 on the terminal attribute table is referenced to obtain a nearby facsimile dial number.

9. 发明专利

JPH0327655A EXCHANGE SYSTEM WITH SUBSCRIBER STATE MANAGEMENT FUNCTION 失效
公开(公告)号：JPH0327655A
公开(公告)日：1991-02-06
申请号：JP16226989
申请日：1989-06-23
申请人： HITACHI LTD , HITACHI MICROCUMPUTER ENG
发明人： SAKUMA TETSUO , MIZUHARA NOBORU , TSUNODA TOMOAKI , YAMAGISHI JUNKO
IPC分类号： H04M3/42
摘要： PURPOSE:To allow a call to reach a telephone set or the like in the vicinity even when a called telephone set is busy and to realize the service corresponding to subscribers by providing a management table registering the state of idle or busy subscriber and allowing a caller to enter its own ID number. CONSTITUTION:When an ID reception signal including an ID number of a called subscriber and of a caller subscriber exists from the idle state, an exchange controller 2 retrieves a busy flag 8d corresponding to the ID number of the called subscriber relating to a subscriber management table 8. As a result of the retrieval of the busy flag 8d, when the busy state of the called subscriber C is recognized, the controller 2 informs to the caller subscriber A of the busy state. As the result of the analysis as to whether or not a telephone set is busy, when the busy state is recognized, the controller 2 retrieves a neighbour telephone number to a neighbour telephone number table 9. When the neighbour telephone number is recognized by the retrieval, whether or not the telephone set of the telephone number is busy is analyzed. When no busy state is discriminated by the analysis, a call signal is sent to the telephone set of the telephone number and the mode is transited to the call state.

10. 发明专利

JPH02205153A COMMUNICATION LINE SWITCHING/JOINTLY USING SYSTEM 失效
公开(公告)号：JPH02205153A
公开(公告)日：1990-08-15
申请号：JP2383989
申请日：1989-02-03
申请人： HITACHI LTD
发明人： NAGAI YASUHIKO , SASAKI RYOICHI , SUZUKI MICHIO , YOSHIOKA SHUNICHI , MIZUHARA NOBORU
IPC分类号： H04M3/22 , G06F13/00 , H04M3/00 , H04Q3/00 , H04Q3/66
摘要： PURPOSE:To execute the switch and control of a communication line for executing efficient line selection by operating a function switching/jointly using the communication line in order from the communication node of a lower order in the case that a communication network is divided into the three layers of a transmission network, exchange network and application network in order from the low order. CONSTITUTION:When a fault is generated in an L11 line, this fault is detected by a multiplexer 103A or 103B at first and the line is autonomously switched from the L11 to an L12 line according to a switch table determined in advance. Then, the communication line is secured as the route of emergency aid. Here, a timer or the time of retry from the generation of the fault to the activation of the switching function is set larger to a PBX in advance in comparison with the multiplexer. Thus, unless the multiplexer fails to execute switching, the function is not activated.

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