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21. 发明专利

JPH07143347A DATA COMPRESSION/EXPANSION SYSTEM FOR COMPOSITE TERMINAL EQUIPMENT 失效
公开(公告)号：JPH07143347A
公开(公告)日：1995-06-02
申请号：JP28381493
申请日：1993-11-15
申请人： RICOH KK
发明人： ONISHI KAZUYOSHI
IPC分类号： H04N1/413 , G06T9/00 , H04L23/00
摘要： PURPOSE:To perform compression/expansion processings for various application functions of a composite terminal equipment while keeping a processing speed higher than a certain level by setting the code value related to a single compression/expansion processing based on the code value of image data equivalent to a single page. CONSTITUTION:A composite terminal equipment 31 calculates the code value based on the image data equivalent to a single page when plural image data are compressed and expanded in conflict by various application functions such as a G3/G4 communication function, a scanner function, a printer function. Then the number of codes to be compressed and expanded at one time is set at the desirable value based on the calculated code value. Thus the codes are compressed and expanded based on the set code value. Therefore it is possible to complete the compression and expansion of codes within a time and without affecting the control of communication and also to set the resources of a compressing/expanding part 29 at a releasable level as a system to perform the compression/expansion processings for various application functions while keeping a processing speed higher than a fixed level.

22. 发明专利

JPH0744622B2 失效
公开(公告)号：JPH0744622B2
公开(公告)日：1995-05-15
申请号：JP11878083
申请日：1983-06-30
IPC分类号： H04N1/00 , G06F13/00 , G06F13/38 , H03M7/30 , H04L23/00 , H04L29/00 , H04L29/06

23. 发明专利

JPH06222904A ADAPTIVE COMPUTATION OF SYMBOL PROBABILITY IN N-ARRANGEMENT STRING 失效
公开(公告)号：JPH06222904A
公开(公告)日：1994-08-12
申请号：JP26752393
申请日：1993-10-26
申请人： IBM
发明人： POORU DONARUDO HIIREI , YORUMA YOHANESU RISANEN
IPC分类号： G06F5/00 , H03M7/40 , H04L23/00
摘要： PURPOSE: To provide a method and device for adaptively predicting and deciding the generation capability of each mark of a finite alphabet in a mark string. CONSTITUTION: Plural sections are defined across one part of a mark string. When continuous new marks are added to the string, they are inputted to the sections, and on the other hand, the old marks are outputted from the sections. Capability corresponding to each mark of an alphabet is held and updated by the following process. Whether or not the new mark is the arbitrary character of the alphabet, and whether or not each old mark drifting away from the sections is the arbitrary character is decided corresponding to each new mark inputted to the sections. Therefore, the number of times of the generation of the arbitrary characters in each section can be changed. A capability update value is decided, and this has capability elements from those sections decided according as whether or not the number of times of the generation of the arbitrary characters in each section is changed. Preferably, the update value is a binary number having a bit position corresponding to each section. The generation capability of the arbitrary marks is updated by using the capability update value.

24. 发明专利

JPH06164651A IMAGE DATA TRANSMITTER 失效
公开(公告)号：JPH06164651A
公开(公告)日：1994-06-10
申请号：JP31193392
申请日：1992-11-20
申请人： FUJI XEROX CO LTD
发明人： TOIKAWA YUJI
IPC分类号： H04L23/00 , H04L12/40 , H04N1/21 , H04N1/41
摘要： PURPOSE:To provide an image data transmitter which reduces communication time in the case of transmitting image data via a network and reduces communication loads on the network. CONSTITUTION:This device is provided with a storage means 1 for storing image data, data amount detecting means 2 for detecting the data amount of image data stored in this storage means 1, data compressing means 3 for compressing the image data, transmitting means 4 for transmitting compressed or noncompressed data to a network 11, communicated amount monitoring means 5 for monitoring the communicated amount of data on the network, and image data compression judging means 6 for deciding whether the image data to be transmitted by the transmitting means 4 are compressed or not based on the image data amount provided from the data amount detecting means 2 and the communicated data amount provided from the communicated amount monitoring means 5.

25. 发明专利

JPH0669964A METHOD AND SYSTEM FOR COMPRESSION OF DATA 失效
公开(公告)号：JPH0669964A
公开(公告)日：1994-03-11
申请号：JP13573991
申请日：1991-05-10
申请人： IBM
发明人： HAABEI JIIN KIIRU , ROBAATO JIYON MANURITSUKU
IPC分类号： G06F5/00 , G06F11/34 , G06T9/00 , H03M7/30 , H04B14/04 , H04L23/00 , H04N7/26 , H04Q9/00 , G06F15/66 , H04N7/13
摘要： PURPOSE: To provide a method and a system for dynamically controlling the use of data compression for data communication. CONSTITUTION: A method for selectively compressing a data communication frame and a computer system for the same are provided concerning data transfer between a computer system 20 having a processor 22 and one other system 40 at least. The work load of processor 22 is periodically identified concerning this processor 22. A predetermined and stored threshold is identified and compared with the identified work load. When the work load is larger than the threshold, the data communication frame is transmitted without being compressed. In the other case, the communication frame is compressed and transmitted. The state of communication line is identified concerning data transfer. In case of idle state, the data communication frame is transmitted without being compressed.

26. 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.

27. 发明专利

JPH05260097A 失效
公开(公告)号：JPH05260097A
公开(公告)日：1993-10-08
申请号：JP5837992
申请日：1992-03-16
IPC分类号： H03M7/46 , H04L23/00
摘要： PURPOSE:To improve the data transfer efficiency by compressing and expanding the data to be transferred even when the 1st and 2nd special codes are included in these data and restoring the original data in order to use the data via not only a non-transmissive transmission line but a transmissive transmission line. CONSTITUTION:In a concentration/allotment communication network, a user A of a host station 10 like a center station, a repeater station, etc., informs a user B of a terminal station 11 of the data X on a setting definition value table necessary for the monitor control. Each of both stations 10 and 11 contains a compression means 12 and an expansion means 13 respectively. If the data to be transferred included a 1st special code, a 2nd special code is added to the data. Then the data are compressed. If these compressed data include the 1st special code and added with the 2nd special code, this added code is deleted. Meanwhile the data are expanded if the 2nd code is not added. Therefore the original data can be restored when the data to be transferred are compressed and expanded even when these data include both special codes.

28. 发明专利

JPH05227224A DATA COMMUNICATION EQUIPMENT 失效
公开(公告)号：JPH05227224A
公开(公告)日：1993-09-03
申请号：JP2644792
申请日：1992-02-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMICHI HIDETOSHI
IPC分类号： H04L23/00 , G06F5/00 , H03M7/30 , H03M7/40
摘要： PURPOSE:To establish the communication enhancing a compression ratio of data compression to opposite parties as many as possible by storing a dictionary stored in the past and using the dictionary from the start of the communication. CONSTITUTION:An additional information storage device 3 stores a dictionary with a fixed content in which an address of a communication opposite party as additional information and an identical key word are cross-referenced to a storage device 1 in the data communication. In the case of 2nd data communication, a comparator 4 and a confirming device 5 confirm whether or not the same dictionary is stored with the opposite party and when the dictionary is in existence, data communication is implemented while extending the dictionary based on the existing dictionary. Furthermore, the dictionary is stored efficiently by a retrieval device 7, an additional information device 8 and a release device 9.

29. 发明专利

JPH0523097B2 失效
公开(公告)号：JPH0523097B2
公开(公告)日：1993-03-31
申请号：JP6636982
申请日：1982-04-22
申请人： KOKUSAI DENSHIN DENWA CO LTD
发明人： KONISHI KAZUNORI , KUREMATSU AKIRA
IPC分类号： H03M7/46 , G06F5/00 , G06F13/00 , H03M7/40 , H03M7/42 , H04L23/00

30. 发明专利

JPH0528159A INTEGRATED DOCUMENT EDITING/TRANSFER DEVICE 失效
公开(公告)号：JPH0528159A
公开(公告)日：1993-02-05
申请号：JP18440291
申请日：1991-07-24
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ARISHIMA JIYUNICHI
IPC分类号： H04L23/00 , G06F17/21 , H04N1/00 , H04N1/32
摘要： PURPOSE:To obtain an integrated document editing/transfer device which can transfer an integrated document including the graphics and the images arranged to the character strings at a high speed. CONSTITUTION:An integrated document editing/transfer device produces and edits an integrated document including the character strings, the graphics and the images, etc., arranged to the character strings forming the text and can transfer the document to the outside. The document is divided into a data file 1 for the character strings of the text, a data file 2 for other character strings, a graphic data file 3, and an image data file 4 together with the identifiers provided to these files to show the attribute of each file. When the document is transferred to the outside, the attribute of each file is decided by the identifier and a data compressor means accordant with each attribute is used. Thus, the integrated document can be fast transferred compared with a case where the document is transferred with only a single type of the data compressor means.

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