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1. 发明专利

JPH0654074A REMOTE SUPERVISORY SYSTEM 失效
公开(公告)号：JPH0654074A
公开(公告)日：1994-02-25
申请号：JP20131692
申请日：1992-07-28
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KANEKO KOICHI , GOTO HIROSHI , MORIYA MICHIAKI , YASUDA MINORU
IPC分类号： H04M11/00 , H04N7/18
摘要： PURPOSE:To provide the supervisory system which performs transmission/ reception through the line of an ISDN. CONSTITUTION:A transmitter 400 is provided with an alarm signal detection circuit 43 to detect signals from plural sensors 301-30k for detecting abnormality and to output alarm information, control part 46 to perform an instruction so as to transmit encoded video information from an image encoder 44 and encoded voice information from a voice CODEC 45 when the alarm information comes from the detecting means 43, and line control part 48 to transmit the video information and the voice information through the ISDN to a receiver 60 when the transmission is instructed from the control part 46, and the receiver 60 is provided with a line control part 61 to receive transmitted signals from the transmitter 400, image restoring means 62 to restore the video information of the transmitted signals, voice encoding.restoring means 63 to encode/restore the voice information, video display means 66 to output and display the restored video information, and voice input/output terminal 67 to output the restored voice information.

2. 发明专利

JPH0638087A REMOTE CAMERA APPARATUS 失效
公开(公告)号：JPH0638087A
公开(公告)日：1994-02-10
申请号：JP19051892
申请日：1992-07-17
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： GOTO HIROSHI , MORIYA MICHIAKI , TOKUGAWA OSAMU , YASUDA MINORU
IPC分类号： H04N5/232 , H04N7/18
摘要： PURPOSE:To enable exact correction by correcting the over controlled quantity of the direction, zoom or focus of a monitor camera generated by transmission delay or signal processing delay corresponding to an image information compressing method with a point to be monitored designated. CONSTITUTION:The operator of a monitor center observes a display 21 and commands rotation stop to an operation part 22 a point of the time when a monitor camera 11 displays an image at a target spot A. An electric pan head 12 reaches a direction B by delay time at such a time. The delay time is a total of the image encoding processing time at an image transmitting terminal 10, the time of image data transmission between the image transmitting terminal 10 and an image receiving terminal 20 and image decoding processing time at the terminal 20 or the like and is made different depending on the image information compressing method. Then, the terminal 10 selects delay information corresponding to the image information compressing method under selection at present, and the correcting rotation is stopped by sending a rotation stop control signal to the pan head 12 after the lapse of rotation correcting time corresponding to this information. The zoom/focus adjustment of the monitor camera 11 is similarly corrected as well.

3. 发明专利

JPH05167641A INCOMING CALL RESTRICTION SYSTEM 失效
公开(公告)号：JPH05167641A
公开(公告)日：1993-07-02
申请号：JP35075491
申请日：1991-12-12
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： GOTO HIROSHI , SHIBATA YOJI , TOKUGAWA OSAMU , YOSHIDA MITSUO , YASUDA MINORU
IPC分类号： H04L29/08 , H04M1/66 , H04M1/663 , H04M3/42 , H04Q1/30 , H04Q3/545
摘要： PURPOSE:To implement setting and release of incoming call restriction with respect to a terminal equipment provided with an incoming call restriction function remotely without visiting to a location of the terminal equipment and operating the terminal equipment. CONSTITUTION:When an incoming call restriction is set from a caller terminal equipment 10 to a called terminal equipment 20 at a remote location, a setup message formed by setting an incoming call restriction setting request code to user information is sent at dialing. The called terminal equipment 20 recognizes it that the incoming call restriction setting request code is set in this message coming from a digital communication network 40 and outgoing address information in the setup message is stored in an incoming call restriction information storage area 209 as the incoming call restriction information. When the called terminal equipment 20 receives the setup message from other terminal equipment, the terminal equipment 20 recognizes it that no incoming call restriction setting request code is included and rejects an arrival of a call when the outgoing address information including the setup message is not registered as the incoming call restriction information of its own equipment.

4. 发明专利

JPH05167638A DATA TRANSFER SYSTEM 失效
公开(公告)号：JPH05167638A
公开(公告)日：1993-07-02
申请号：JP35075691
申请日：1991-12-12
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： GOTO HIROSHI , SHIBATA YOJI , KAWATO TOSHIYUKI , YOSHIDA MITSUO , YASUDA MINORU
IPC分类号： H04L29/06 , H04L12/02 , H04L29/08 , H04M11/00 , H04Q5/00
摘要： PURPOSE:To simply an attain bulk mode transfer. CONSTITUTION:An MPU 1 of a device A sets an ISDN control section 3 to the bulk mode via an instruction decoder 6 and sends test data 2 to channels B1, B2 via the ISDN control section 3. An ISDN control section 7 of a receiver side device B receives the data and test data 8 are reproduced through a delay compensation circuit 14, which allows the MPU 9 to check whether or not the reproduced test data 8 are correct and the result is transferred to an equipment A in the normal mode. When the test data are correctly received, the equipments A, B transfer data in the bulk mode and when not, the equipments A, B send the data in the usual mode. Delay compensation circuits 13, 14 have only to implement less delay compensation.

5. 发明专利

JPH04207381A METHOD FOR DISTRIBUTING VIDEO AMONG MULTIPLE POINTS 失效
公开(公告)号：JPH04207381A
公开(公告)日：1992-07-29
申请号：JP32911690
申请日：1990-11-30
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： GOTO HIROSHI , SHIBATA YOJI , YOSHIDA MITSUO , YASUDA MINORU
IPC分类号： H04M3/56 , H04N5/00 , H04N7/14 , H04Q11/04
摘要： PURPOSE:To facilitate the exact recognition of the progressing condition of conferences by displaying the synthesized screens of plural places on respective conference sites. CONSTITUTION:A conference center and the conference sites (video conference terminals) A to D are connected to a digital communication network 100. Each of the conference sites A to D is constituted of a television camera 105, a video signal transmitter 101, a video signal receiver 102, a man-machine operating section 103, and a display 104. These conference sites together with the conference center have the call setting and cutting functions concerning the ISDN user network interface conditions. The videos of the plural places are synthesized and the screens superposed with the plural characters corresponding to the places on these videos are simultaneously displayed on the displays 104 of the conference sites A to D during the video conference. The progressing condition of the conference at the respective conference sites A to D is recognized in this way.

6. 发明专利

JPH11313161A MULTI-SPOT MONITORING SYSTEM 失效
公开(公告)号：JPH11313161A
公开(公告)日：1999-11-09
申请号：JP12031398
申请日：1998-04-30
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： TAKASHIMA TAIICHIRO , GOTO HIROSHI , TAKASHIMA KATSUHIKO , YAMAZAKI TAKASHI , MIZUSAWA JUNICHI
IPC分类号： H04N7/18 , G08B25/01 , H04L12/02 , H04M11/00 , H04Q9/00
摘要： PROBLEM TO BE SOLVED: To realize multi-spot connection from a monitoring site device without registering multi-spot information in the monitoring site device beforehand in a multi-spot monitoring system using a ring-like communication line. SOLUTION: A monitoring center device 101 stores multi-spot information on monitoring site devices 102-105 for participating in the multi-spot monitoring and on a call originating order, and when a transfer instruction from the outside or a transfer request instruction from one of the monitoring site devices is present, transfers the stored multi-spot information to the monitoring site device. The monitoring site devices 102-105 transmit the transfer request instruction to the monitoring center device 101 when the transfer request instruction of the multi-spot information is issued from the outside, and when the multi-spot information is transferred from the monitoring center device 101, control all the monitoring site devices indicated by the multi-spot information so as to establish a ring-like communication line by replacing the call originating order indicated by the multi-spot information around and successively originating a call by the call originating order for which itself is the first.

7. 发明专利

JPH0795546A VIDEO TELEPHONE SYSTEM 失效
公开(公告)号：JPH0795546A
公开(公告)日：1995-04-07
申请号：JP23671093
申请日：1993-09-22
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： MORIYA MICHIAKI , GOTO HIROSHI , MATSUI HIROYUKI , TOMITA YASUHIRO , IBARAKI HISASHI , REN NAOYA
IPC分类号： H04N7/14
摘要： PURPOSE:To provide a video telephone system which prevents the picture quality degradation of a picture to be generated when performing the A/D conversion of a video signal and decreases the amount of a recording medium. CONSTITUTION:A camera part 11a outputs an image signal. A monitor part 11b inputs the image signal and outputs a picture. A communication control part 13 inputs/outputs a voice signal or the image signal with the outside. At the time of an automatic answering mode, a microprocessor 13f performs automatic incoming call response. An image memory 15g records and reproduces the image signal in the form of a digital signal and a still picture, and an image storage control part 15f controls the image memory 15g. The microprocessor 13f outputs an instruction to record or reproduce the still picture to the image memory 15g and while receiving the instruction, the image memory 15g records or reproduces the still picture.

8. 发明专利

JPH0638086A REMOTE SUPERVISORY DEVICE 失效
公开(公告)号：JPH0638086A
公开(公告)日：1994-02-10
申请号：JP19051792
申请日：1992-07-17
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： MORIYA MICHIAKI , GOTO HIROSHI , KAWATO TOSHIYUKI , YASUDA MINORU
IPC分类号： H04N5/222 , H04N5/232 , H04N7/18
摘要： PURPOSE:To transmit the video signal of the remote supervisory device and the control signal of a supervisory camera without interrupting pictures by using only one channel of a digital exchange network. CONSTITUTION:The video signal of a supervisory camera 5 is divided into video packets and transmits through a digital exchange network 3 to a receiver 2, the control signals of the supervisory camera, electric pan head 7 and zoom lens 8 instructed by an operation part 6 are inserted to a gap part between the video packets and transmits through the digital exchange network 3 to a transmitter 1, and the transmitter 1 sends an instruction to a camera manipulator 4.

9. 发明专利

JPH04207380A IMAGE COMMUNICATION SYSTEM 失效
公开(公告)号：JPH04207380A
公开(公告)日：1992-07-29
申请号：JP32911790
申请日：1990-11-30
申请人： HITACHI LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： NISHI YUMIKO , GOTO HIROSHI , YOSHIDA MITSUO , YASUDA MINORU , SUZUKI HAJIME
IPC分类号： H04N11/04 , H03M7/40 , H04N7/10 , H04N7/24 , H04N19/00 , H04N19/42 , H04N19/423 , H04N19/85
摘要： PURPOSE:To facilitate change of variables installing a RAM capable of direct writing from the terminal of an operating section in the digital signal processing sections existing in a signal receiving section and a signal transmitting section. CONSTITUTION:Analog image information is inputted to the signal transmitting section 10 where the information is converted to a digital signal. The digital signal is encoded by using the prescribed variable in the digital signal processing section 112 and is inputted through a digital network 40 to the signal receiving section 20. The signal is decoded to the analog signal by using the prescribed variable in the digital signal processing section 212. The analog signal is inputted to the operating section 30. The variables, such as table value parameter, necessary for encoding and decoding are written into the RAM in the digital signal processing sections 112, 212 from a disk 33 possessed by the operating section 30. The change of the variables arising from the improvement of the image quality is easily executed in this way from the operating section 30.

10. 发明专利

JPH06152637A INFORMATION ACQUISITION METHOD BETWEEN ISDN TERMINAL EQUIPMENT 失效
公开(公告)号：JPH06152637A
公开(公告)日：1994-05-31
申请号：JP30124792
申请日：1992-11-11
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： GOTO HIROSHI , KAWASHIMA MASAHIRO
IPC分类号： H04M11/00 , H04L12/14 , H04L12/50
摘要： PURPOSE:To save a required line number and to attain economical communication by allowing an outgoing terminal equipment to access a center terminal equipment so as to obtain information of a closest local center terminal equipment to the outgoing terminal equipment on a network from the center terminal equipment. CONSTITUTION:An optional local center terminal equipment includes a retrieval key in user information of a call setup message and sends the resulting information to a center terminal equipment. The center terminal equipment retrieves a line number and an outgoing terminal equipment number managed by an information dependent access line management section 240 based on the retrieval key in a received message and uses a line number comparison control section 250 to select a terminal equipment closest to the outgoing terminal equipment. When the selected terminal equipment is its own center terminal equipment, a reply message is returned to set a line exchange path. On the other hand, when another local center terminal equipment is selected, the line number of the terminal equipment is informed to the outgoing terminal equipment and the outgoing terminal equipment sends a call setup message using a designated terminal equipment number as a called number again. Thus, number of lines required for the center terminal equipment is saved and economical communication is attained.

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