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1. 发明专利

JPH03293851A OPERATOR INTERFACE CONTROL SYSTEM FOR ISDN 失效
公开(公告)号：JPH03293851A
公开(公告)日：1991-12-25
申请号：JP9401990
申请日：1990-04-11
申请人： HITACHI LTD , HITACHI COMMUNICATION SYSTEM , HITACHI INFORMATION NETWORK
发明人： KUWABARA HIDEKI , TANIGUCHI HIDENORI , YAGYU KAZUO , KAWATOBI TATSUO , ABE ATSUSHI
IPC分类号： H04L29/08 , H04M11/00
摘要： PURPOSE:To enable an operator to individually operate and manage channels with resource IDs by locating channels on an ISDN subscriber line as resources. CONSTITUTION:A host computer 1 connects plural ISDN subscriber lines (each of which consists of a control channel 6 and plural information channels 7) 2, and an ISDN adapter 17 of a line control part 12 where one ISDN subscriber line 2 is stored has the function to demultiplex and multiplex the control channel (Dch) 6 and plural information channels (Bch) 7. An operator 5 can regard Dch data link connections, which are multiplexed on the Dch 6 of the ISDN subscriber line 2 with service access point identifiers, and Bch 7 as resources independent of one another. Thus, the operator 6 can individually operate and manage respective resources with a command having the resource ID as a parameter.

2. 发明专利

JPH02231669A NETWORK RESOURCE CONTROL SYSTEM 失效
公开(公告)号：JPH02231669A
公开(公告)日：1990-09-13
申请号：JP5194489
申请日：1989-03-06
申请人： HITACHI LTD , HITACHI INFORMATION NETWORK
发明人： TANAKA KOICHI , SHIMIZU HIDEKI , SATO TOSHIO , YAGYU KAZUO
IPC分类号： G06F15/16 , G06F15/00 , G06F15/177
摘要： PURPOSE:To execute communication between resources under the control of different host computers by informing the change part (differential information) of the resource in a self-domain of the inside of the host computer to control the resource in each domain. CONSTITUTION:When the resources in respective domains 1-3 are changed, the change is registered to a control table 13 in host computers 4-6 of the domains 1-3 and next, the change part (differential) information are transmitted to each control table 13. The respective host computers 4-6 execute change operation processing required for the communication with the changed resource by using the information. The control table 13 monitors to which host computers 4-6 the differential information are given and to which degree the change operation processing is advanced concerning contents in the opponent host computer. Then, the history of the processing is registered as well. Thus, when the host computer under stopping is started, the differential information to be transmitted to the host computer can be known and the changed resource in the different domain can be accessed even from the domain of the host computer to be started in the middle of operation.

3. 发明专利

JPS6447191A SIGNAL LEVEL ADJUSTOR WITH TELEVISION SUBSCRIBING TERMINAL 失效
公开(公告)号：JPS6447191A
公开(公告)日：1989-02-21
申请号：JP20389587
申请日：1987-08-17
申请人： YAGI ANTENNA , HITACHI LTD
发明人： SHIGA MICHINORI , KITATANI CHIHIRO , YAGYU KAZUO
IPC分类号： H04N7/16 , H03H7/46 , H04L12/40 , H04L12/413 , H04N7/173
摘要： PURPOSE:To eliminate the movement of a terminal and adjustment at a newly subscribing time by adjusting a branch monitoring output with the directional coupler of a receiving signal to a data terminal and further subscribing a television receiver through a band-pass filter to a network. CONSTITUTION:When the adjustment of a receiving signal level in respective data terminals 32a, 32b,... is executed, a reference signal is generated in a reference signal generator 35 and sent through a head end 34 to a transmission path 31. The receiving signal inputted to a signal level adjustor 11a is supplied to a distributor 16 and a signal in a data signal side is divided from a transmission signal through a divider 17 and further, it is distributed to a data terminal 13 and a monitoring terminal 14 through a demultiplexer 18 and a directional coupler 21. Here, a level which the terminal 32a needs is adjusted by a variable attenuator 19. A transmission signal level is adjusted by a variable attenuator 20. Further, a signal distributed to a TV signal side by the distributor 16 is supplied through a BPF22 to a television receiver terminal 15. Thus, the movement of the terminal and the adjustment at the newly subscribing time can be eliminated.

4. 发明专利

JPS6320061B2 失效
公开(公告)号：JPS6320061B2
公开(公告)日：1988-04-26
申请号：JP857583
申请日：1983-01-21
申请人： HITACHI LTD
发明人： YAGYU KAZUO , HIRAKO YOSHIO
IPC分类号： H04J3/00 , H04B7/15 , H04B7/212 , H04J3/17

5. 发明专利

JPS6314525A SIGNAL LEVEL ADJUSTING DEVICE 失效
公开(公告)号：JPS6314525A
公开(公告)日：1988-01-21
申请号：JP15914086
申请日：1986-07-07
申请人： YAGI ANTENNA , HITACHI LTD
发明人： KITATANI CHIHIRO , NISHIZAWA TAKAHIKO , YAGYU KAZUO
IPC分类号： H04B3/04 , H04H20/76 , H04H20/78 , H04L12/28
摘要： PURPOSE:To adjust a signal level difference between terminal equipments within a reference level by providing a variable attenuator to each of a reception path and a transmission path each comprising the combination of branching filters provided between a data transmission line and a data terminal equipment. CONSTITUTION:A transmission line terminal 12 is connected to a data transmission line and a data terminal 13 is connected to a data terminal equipment in a level adjusting device 11 respectively. A reception signal inputted via the terminal 12 is connected to a 1st branching device 16 via a reception signal level variable attenuator 15. A branching device 16 branches a reception signal and a transmission signal sent via the terminal 13, the reception separating path is connected to the reception separation side of a 2nd branching device 17 and the opposed transmission separation side is connected to that of the branching device 17 via a variable attenuator 18. A directional coupler 19 is connected among the branching device 17, the terminal 13 and a monitor terminal 14 so as to branch the inputted reception signal into a monitor output and a data output. The reception level monitored at the terminal 14 is adjusted into a prescribed level by the attenuator 15 and the transmission signal level sent from the terminal 13 is adjusted into a prescribed level by an attenuator 18.

6. 发明专利

JPS61201358A DATA COMMUNICATION SYSTEM 失效
公开(公告)号：JPS61201358A
公开(公告)日：1986-09-06
申请号：JP4110985
申请日：1985-03-04
申请人： HITACHI LTD
发明人： YAGYU KAZUO , MATSUI SUSUMU
IPC分类号： H04L29/02 , G06F5/06 , G06F12/02 , G06F13/00 , H04L13/00 , H04L13/08
摘要： PURPOSE:To utilize a buffer effectively without any increase in processing overhead by receiving all frames in a long buffer temporarily, and then transferring them to a short buffer and releasing the long buffer when the received frames are short. CONSTITUTION:The address and length of one buffer in a long buffer area L are specified during frame reception and a frame received from a circuit is fetched in this buffer. When the head of the frame is detected by a circuit control part 3, the circuit control part starts a DMAC. The DMAC initiates an interruption to a CPU when the reception of the one frame is completed. The length of the received frame is checked firstly in an interruption routine initiated by the interruption from the DMAC. When its length is smaller than a specific value, one short buffer in a short buffer area S is specified and the received frame is transferred thereto. Then, the long buffer used during the reception is released.

7. 发明专利

JPS61173548A DATA COMMUNICATION SYSTEM 失效
公开(公告)号：JPS61173548A
公开(公告)日：1986-08-05
申请号：JP1348185
申请日：1985-01-29
申请人： YAGI ANTENNA , HITACHI LTD
发明人： MORIFUJI MOTOYOSHI , NISHIZAWA TAKAHIKO , YAGYU KAZUO
摘要： PURPOSE:To improve the channel utilization efficiency of a circuit and to shorten a processing time by allowing a terminal-side computer to modulates and output the 2nd high frequency signal from the 2nd modulating means when receive data is data which permits transmission and to resend request-to-send data when the data is data which reports a collision. CONSTITUTION:When a frequency converter 4 sends transmission permission data or collision report data as the 3rd frequency signal FH at a request to send from computers 12a, 12b...12n at terminal sides C, a transmission requesting computers at a terminal side C transmits data as the 2nd high frequency signal FL2 when the transmission permission data is received or resends request-to-send data as the 1st high frequency signal FL1 a certain delay time later when the collision report data is received. The high frequency signal FL2 is frequency- converted by the frequency converter 4 into the 3rd high frequency signal FH which is sent to the terminal sides C. The computers 12a, 12b...12n at the terminal sides C demodulate the 3rd high frequency signal FH to obtain receive data and fetches and processes the data when the data is addressed to the computers.

8. 发明专利

JPS61173547A DATA COMMUNICATION SYSTEM 失效
公开(公告)号：JPS61173547A
公开(公告)日：1986-08-05
申请号：JP1348085
申请日：1985-01-29
申请人： YAGI ANTENNA , HITACHI LTD
发明人： MORIFUJI MOTOYOSHI , NISHIZAWA TAKAHIKO , YAGYU KAZUO
IPC分类号： H04L5/14
摘要： PURPOSE:To shorten a wait time and to shorten a processing time by detecting the collision of the 1st high frequency signal as a transmit data signal by a frequency converter provided to a center facility side, transmitting the 2nd high frequency signal to a terminal side, and stopping the transmission from a computer temporarily and then restarting the transmission. CONSTITUTION:When the control computer 415 in the frequency converter 4 detects the collision of the 1st high frequency signal FL, the 2nd high frequency signal FH from a modulating circuit 411 corresponding to collision information data is transmitted to the terminal side C as a substitute for the 2nd high frequency signal FH from a frequency converting circuit 410. Thus, when the occurrence of the collision of the 2nd high frequency signal FH is indicated, a computer which is in process of sending the 1st high frequency signal FL among computers 12a, 12b...12n which receive the signal FH stops the transmission immediately and resends data which is already sent unless the 2nd high frequency signal FH is received within its individually determined delay; time.

9. 发明专利

JPH07160641A INFORMATION PROCESSOR 失效
公开(公告)号：JPH07160641A
公开(公告)日：1995-06-23
申请号：JP30771493
申请日：1993-12-08
申请人： HITACHI LTD
发明人： YOSHINO MASATAKA , MURAKAMI TATSUYA , ARAI TOSHIFUMI , NOJIRI TORU , YAGYU KAZUO
IPC分类号： G06F1/00 , G06F15/00 , G06F21/20 , G09C1/00
摘要： PURPOSE:To protect programs and data and to improve the reliability of the programs and data by permitting the use of the data with the input timing of a user ID and a password, i.e., the time intervals of input characters defined as the reference of inquiry. CONSTITUTION:A user inputs 'PASS' through a keyboard 11 with input timing registered previously, i.e., in the time intervals of input characters at the starting time of use of an information processor. Then the user fetches the password for each character into a keyboard input contents recognizing device 12 and measures the input timing by an input interval measuring device 13. Meanwhile the user calls out the character string and the input timing of the registered password of a permitted user that is previously stored in a hard disk device and then compares the character string of the password that is actually inputted with the input timing by an input contents right/wrong deciding device 14. Then the use of the information processor is permitted if the coincidence is secured between the character string actually inputted and the input timing and those of the registered password of the permitted user which are previously stored.

10. 发明专利

JPH05165752A OPERATING METHOD FOR COMMUNICATION CONTROL PROCESSOR 失效
公开(公告)号：JPH05165752A
公开(公告)日：1993-07-02
申请号：JP33323391
申请日：1991-12-17
申请人： HITACHI LTD
发明人： HIRATA TOSHIAKI , MINEO AKIRA , YAGYU KAZUO
IPC分类号： G06F13/00
摘要： PURPOSE:To autonomously operate CCP by providing an external storage device for storing a program and alteration information on a network definition in a communication control processor(CCP). CONSTITUTION:When CCP 2 is started by an operator command inputted from a host computer 1 and the operation by an autonomous operation possible mode is designated by the operator command, the program is loaded on CCP 2 and the program is stored in the external storage device 8 of CCP 2. When an autonomous operation impossible mode is designated by the operator command, only the program is loaded on CCP 2 and the program on CCP 2 is not stored in the external storage device 8. Thus, the operation mode of CCP 2 is decided at the time of loading the program from the host computer 1 to CCP 2. The decided operation mode is stored in the external storage device 8 in CCP 2, and starting is decided by the information.

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