JPS6459437A - File compressing system - Google Patents

File compressing system

Info

Publication number
JPS6459437A
JPS6459437A JP62216143A JP21614387A JPS6459437A JP S6459437 A JPS6459437 A JP S6459437A JP 62216143 A JP62216143 A JP 62216143A JP 21614387 A JP21614387 A JP 21614387A JP S6459437 A JPS6459437 A JP S6459437A
Authority
JP
Japan
Prior art keywords
word
file
list
appearance
words
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62216143A
Other languages
Japanese (ja)
Inventor
Akiko Mikami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62216143A priority Critical patent/JPS6459437A/en
Publication of JPS6459437A publication Critical patent/JPS6459437A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To smoothly perform the file compressing work of information from first to last without interruption, by cancelling encoding of words whose frequency in appearance is low when a list (memory) is filled up at the time of encoding of words. CONSTITUTION:Information entered in an input object file 1 is read out in order from the first and is transferred to and stored in an output object file, and words are extracted from the read input file. Information indicating substitution of a word with a number of the list is outputted to an output file 3 when the frequency in appearance of this word reaches a certain value, and only the number of the list is outputted to the output line and is copied when the same word is detected hereafter. If this word list is filled up, the word whose frequency in appearance is lowest is detected and is deleted and another word is registered to reuse the substitution number. Thus, many information are efficiently stored in the file in a short time.
JP62216143A 1987-08-29 1987-08-29 File compressing system Pending JPS6459437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62216143A JPS6459437A (en) 1987-08-29 1987-08-29 File compressing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62216143A JPS6459437A (en) 1987-08-29 1987-08-29 File compressing system

Publications (1)

Publication Number Publication Date
JPS6459437A true JPS6459437A (en) 1989-03-07

Family

ID=16683946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62216143A Pending JPS6459437A (en) 1987-08-29 1987-08-29 File compressing system

Country Status (1)

Country Link
JP (1) JPS6459437A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0475138A (en) * 1990-07-18 1992-03-10 Nec Corp Program size compression device
JPH04288640A (en) * 1991-01-17 1992-10-13 Yamaha Corp Control method for information in secondary storage device and electronic apparatus having this device
JPH0546357A (en) * 1991-07-15 1993-02-26 Sharp Corp Compressing method and restoring method for text data
JPH05127865A (en) * 1991-10-31 1993-05-25 Sharp Corp Text c0mpression device and device for automatically constructing dictionary for text compression
JPH07282040A (en) * 1994-04-13 1995-10-27 Nec Commun Syst Ltd Japanese information compression system
JPH08180067A (en) * 1994-12-26 1996-07-12 Nec Corp Data base record compression system
JP2003523564A (en) * 1999-12-23 2003-08-05 ゼントロニクス プロプライエタリー リミテッド Method for storing and retrieving minified data
JP2004015743A (en) * 2002-06-11 2004-01-15 Vehicle Information & Communication System Center Compressing/encoding/transmitting apparatus and method, and decompressing/decoding/receiving apparatus and method for road traffic information

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0475138A (en) * 1990-07-18 1992-03-10 Nec Corp Program size compression device
JPH04288640A (en) * 1991-01-17 1992-10-13 Yamaha Corp Control method for information in secondary storage device and electronic apparatus having this device
JPH0546357A (en) * 1991-07-15 1993-02-26 Sharp Corp Compressing method and restoring method for text data
JPH05127865A (en) * 1991-10-31 1993-05-25 Sharp Corp Text c0mpression device and device for automatically constructing dictionary for text compression
JPH07282040A (en) * 1994-04-13 1995-10-27 Nec Commun Syst Ltd Japanese information compression system
JPH08180067A (en) * 1994-12-26 1996-07-12 Nec Corp Data base record compression system
JP2003523564A (en) * 1999-12-23 2003-08-05 ゼントロニクス プロプライエタリー リミテッド Method for storing and retrieving minified data
JP2004015743A (en) * 2002-06-11 2004-01-15 Vehicle Information & Communication System Center Compressing/encoding/transmitting apparatus and method, and decompressing/decoding/receiving apparatus and method for road traffic information

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