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1. 发明专利

JPH05347636A 失效
公开(公告)号：JPH05347636A
公开(公告)日：1993-12-27
申请号：JP15378592
申请日：1992-06-12
申请人： NIPPON ELECTRIC ENG
发明人： ITO SEIJI
IPC分类号： G06F13/00 , H03M7/30 , H04B14/04 , H04L23/00
摘要： PURPOSE:To improve the efficiency by giving a system revision notice to an opposite equipment when it is discriminated that the efficiency is excellent for revising the data compression system during data transmission. CONSTITUTION:A sender side equipment 10 has plural compression rule data used for itself and uses a notice means 12 to notice all data to the equipment 10. A receiver side equipment 20 has rule data used for itself similarly and uses a reply means 22 to reply the compression rule data coincident with the data from the equipment to the equipment 10. The equipment 10 uses a selection means 13 to select the compression rule data with an excellent compression efficiency of transmission data among the compression rule data informed from the equipment 20 to give the selected data to a transmission means 11. The equipment 10 generates statistic data relating to the compression efficiency and updates the compression rule data with a updating means 14 based on the statistic data and informs the new compression rule data to the means 11 and the reception means 12. Thus, the data transmission with a highest efficiency is implemented.

2. 发明专利

JPH0318949A COMMUNICATION CONTROLLER 失效
公开(公告)号：JPH0318949A
公开(公告)日：1991-01-28
申请号：JP15219289
申请日：1989-06-16
申请人： NIPPON ELECTRIC ENG
发明人： ITO SEIJI
IPC分类号： G06F13/00 , H04L29/02 , H04L29/10
摘要： PURPOSE:To increase the processing speed and to improve the using efficiency of a memory area by applying an interface to the data which is treated between hierarchies based on a pointer and the buffer length. CONSTITUTION:The communication controllers 10 and 20 are set at the transmission and reception sides respectively, and buffers 11 and 21 store temporarily the data which are transferred between hierarchies of a communication control program having plural hierarchical structures. A lower rank hierarchy informing means 12 informs a lower rank hierarchy of the buffer length as well as a head pointer covering the area of the buffer 11 where the data produced at its own hierarchy are temporarily stored. At the same time, a higher rank hierarchy informing means 22 informs a higher rank hierarchy of the buffer length as well as a head pointer covering the area of the buffer 21 where the data extracted by its own hierarchy are temporarily stored. Thus an interface is applied to the data which are handled between programs based on a pointer and the buffer length. As a result, the processing speed is increased and a memory is used with high efficiency.

3. 发明专利

JPH04351042A DATA TRANSMISSION CONTROLLER 失效
公开(公告)号：JPH04351042A
公开(公告)日：1992-12-04
申请号：JP12420791
申请日：1991-05-29
申请人： NIPPON ELECTRIC ENG
发明人： ITO SEIJI
IPC分类号： H04L23/00
摘要： PURPOSE:To enhance the data transmission efficiency by decreasing a data transmission time. CONSTITUTION:A memory 11 stores plural data 1, 2, 3 to be sent. A data compressor 12 compresses an information quantity of a data subject to transmission request and decodes a received compression data. A transmitter 13 has a physical control layer 14 and a host layer 15 and a data compressor 11 compresses the data subject to transmission request till the physical control layer 14 receiving transmission requests 1-3 from the host layer 15 reaches transmission of a data to a line, and the layer 14 gives a data able to identify a data not compressed and a compressed data to the not-compressed data and the compressed data and sends the result.

4. 发明专利

JPH04123640A DATA TRANSMISSION CONTROL SYSTEM 失效
公开(公告)号：JPH04123640A
公开(公告)日：1992-04-23
申请号：JP24555390
申请日：1990-09-14
申请人： NIPPON ELECTRIC ENG
发明人： ITO SEIJI
IPC分类号： H04L29/06 , H03M7/30 , H04B1/66
摘要： PURPOSE:To enhance the transmission efficiency by compressing and transmitting data, when it is decided that the compression completion of data is executed in a smaller time than the time when it can be sent out. CONSTITUTION:A physical layer 4 which receives transmitting requests 1-3 from a host layer 5 decides whether the transmitting request data 1-3 are compressed or not by comparing the time when the requested data becomes transmittable and the time when the requested data is subjected to compression completion, and when the compression completion is executed in a smaller time, the data is compressed by using a data compressing device 6, and thereafter, the data is sent out onto a circuit 7. Also, in a data transmission controller of a receiving side, when compressed data from the circuit 7 is received, it is returned to the original data by a data expanding device 8.

5. 发明专利

JPH02135941A MONITORING DEVICE FOR SYSTEM DOWN OF WORK STATION 失效
公开(公告)号：JPH02135941A
公开(公告)日：1990-05-24
申请号：JP29080188
申请日：1988-11-17
申请人： NIPPON ELECTRIC ENG
发明人： ITO SEIJI
IPC分类号： G06F11/30 , H04L12/40
摘要： PURPOSE:To reduce a load on transmission on a transmission path by detecting a fault work station by connecting and installing a device to monitor an opposite work station separately via the transmission path. CONSTITUTION:A monitoring device 4 connected to the transmission path 1 monitors transmission equipment 2, and transmission equipment 3. The monitoring device 4 re-sends a monitor message S3 when receiving no response within constant time T after sending the monitor message S3. Also, the monitoring device 4 detects the system down of an opposite station when receiving no response within the constant time T after re-sending the message S3 to monitor the constant number of times N. In such a way, it is possible to reduce the load on the communication on the transmission path.

6. 发明专利

JPH05165647A PROGRAM LOAD SYSTEM 失效
公开(公告)号：JPH05165647A
公开(公告)日：1993-07-02
申请号：JP35305891
申请日：1991-12-18
申请人： NIPPON ELECTRIC ENG
发明人： ITO SEIJI
IPC分类号： G06F9/445 , G06F13/00
摘要： PURPOSE:To decrease the load of a server side work station in a work station to execute mutual communication through a transmission line between the server side work station connected to a network and plural client side work stations. CONSTITUTION:A server side work station 5 is equipped with program load information and manages programs loaded to respective client side work stations 7A, 7B...7N and when a program load request is given from one of the client side work stations, the address of the client side work station loading the same program is informed. Then, the program is transferred between the client side work station giving the program load request and the client side work station at the informed address.

7. 发明专利

JPH0387954A DATA TRANSFER SYSTEM FOR COMMUNICATION CONTROLLER 失效
公开(公告)号：JPH0387954A
公开(公告)日：1991-04-12
申请号：JP22610389
申请日：1989-08-30
申请人： NIPPON ELECTRIC ENG
发明人： ITO SEIJI
IPC分类号： G06F13/00
摘要： PURPOSE:To transfer data at a high speed by informing a program of a pointer and the data length of a data area which are sent by a program performing the transfer of data and carrying out the transfer of data in a state where the program received the information is prevented from fetching the data on other programs. CONSTITUTION:A start pointer P1 and the length L1 of the data D1 produced from an (N+1) layer of a communication controller 1 are written into a data interface area 5. This information is sent to an N layer for request of the transfer of this information. The N layer writes the data length L2 of a start pointer P2 of the data D2 to be added to the data D1 requested by the (N+1) layer into a data interface area 5 to give this information to an (N-1) layer for request of the transfer of data. Then a physical layer sends the data 7 onto a circuit based on the area 5 storing the pointer and the length of the data D1, D2... DX produced by the layers (N+1), N... X. Thus the data can be transferred at a high speed.

8. 发明专利

JPH05128029A WORK STATION NETWORK 失效
公开(公告)号：JPH05128029A
公开(公告)日：1993-05-25
申请号：JP28885591
申请日：1991-11-05
申请人： NIPPON ELECTRIC ENG
发明人： ITO SEIJI
IPC分类号： G06F13/00
摘要： PURPOSE:To distribute the load of individual work stations by allowing a work station having an optimum environment to execute a program requested to be executed. CONSTITUTION:A client 2 is provided an environment informly control part 6 for informing the using state of a memory 7 to a server 4 through a data transfer control part 5. A client 3 is also provided with an environment informing control part 9 for informing the using state of a memory 10 to the server 4 through a data transfer control part 8. At the time of receiving the using states of the memories 7, 10 informed from respective clients 2, 3 and then receiving a program execution request from one of the clients 2, 3, the server 4 selects an optimum work station based on the using states of the memories 7, 10, 13 and includes an environment monitor and control part to 12 load the program to the selected work station.

9. 发明专利

JPH03148941A DATA TRANSFER SYSTEM IN COMMUNICATION 失效
公开(公告)号：JPH03148941A
公开(公告)日：1991-06-25
申请号：JP28628689
申请日：1989-11-02
申请人： NIPPON ELECTRIC ENG
发明人： ITO SEIJI
IPC分类号： G06F13/00 , H04L29/10
摘要： PURPOSE:To efficiently use data areas by allowing respective hierarchies of communication control programs having hierarchical structure to store pointer and the data length of transmission data for which the other program requests. CONSTITUTION:The pointer P1 and the data length L1 of data D1 generated in the (N+1)th layer of a communication controller 6 is informed to an Nth layer and data transfer is requested. When the (N+1)th layer is data which is generated at first, ID indicating that no subsequent data is present in a data interface area 5 is set. Furthermore, the Nth layer writes the pointer P1 and the data length L1 of data D1 for which the (N+1)th layer requests into the data interface area 51 of data D2 added to data D1, informs the (N-1)th layer of the pointer P2 and the data length L2 of data D2 and requests data transfer. Thus, the processing speed of data transfer is improves and the data areas can efficiently be used.

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