JPS6450282A - Data compression system - Google Patents

Data compression system

Info

Publication number
JPS6450282A
JPS6450282A JP20645987A JP20645987A JPS6450282A JP S6450282 A JPS6450282 A JP S6450282A JP 20645987 A JP20645987 A JP 20645987A JP 20645987 A JP20645987 A JP 20645987A JP S6450282 A JPS6450282 A JP S6450282A
Authority
JP
Japan
Prior art keywords
data
code
compression control
data compression
control code
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
JP20645987A
Other languages
Japanese (ja)
Inventor
Tomoo Fujita
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 JP20645987A priority Critical patent/JPS6450282A/en
Publication of JPS6450282A publication Critical patent/JPS6450282A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To recognize a data compression control code irrespective of the position of the data compression control code, by providing a flag attaching means which attaches a flag representing the fact that a code is not the data compression control code and the flag representing the fact that the code is the data compression control code on data converted to that of 7 unit code. CONSTITUTION:The data targeted not to be compressed in a data string of the data of 8 unit code is converted to the 7 unit code, and the flag representing the fact that the code is not the data compression control code is attached by the flag attaching means. Also, as for the data targeted to be compressed in the data string, the data consisting of seven bits representing the repetitive number of times of the data targeted to be compressed is generated by a repetitive number of times generating means, and the flag representing that fact that the code is the data compression control code is attached by the attaching means. Therefore, it is possible to recognize the data compression control code required for the extension of the data based on the flag even when the data compression control code exists at any part in the data string after compression, and furthermore, its bit constitution changes by the repetitive number of times of the data targeted to be compressed.
JP20645987A 1987-08-21 1987-08-21 Data compression system Pending JPS6450282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20645987A JPS6450282A (en) 1987-08-21 1987-08-21 Data compression system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20645987A JPS6450282A (en) 1987-08-21 1987-08-21 Data compression system

Publications (1)

Publication Number Publication Date
JPS6450282A true JPS6450282A (en) 1989-02-27

Family

ID=16523728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20645987A Pending JPS6450282A (en) 1987-08-21 1987-08-21 Data compression system

Country Status (1)

Country Link
JP (1) JPS6450282A (en)

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