JPS57212868A - Information compressing system - Google Patents

Information compressing system

Info

Publication number
JPS57212868A
JPS57212868A JP9858381A JP9858381A JPS57212868A JP S57212868 A JPS57212868 A JP S57212868A JP 9858381 A JP9858381 A JP 9858381A JP 9858381 A JP9858381 A JP 9858381A JP S57212868 A JPS57212868 A JP S57212868A
Authority
JP
Japan
Prior art keywords
shift
data
eor
section
eor operation
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
JP9858381A
Other languages
Japanese (ja)
Inventor
Kenji Inoue
Koji Yamato
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9858381A priority Critical patent/JPS57212868A/en
Publication of JPS57212868A publication Critical patent/JPS57212868A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To considerably compress data transfer amount, by shifting reference line data and coded line data and obtaining an exclusive OR (EOR) and performing two dimensional coding with shifted state at the maximum coinciding point. CONSTITUTION:A data is sequentially read out one by one bit from a reference line register 1 and a coded line register 2 and an EOR operation is made at an EOR operation section 3. The total number of discidence with the EOR operation is stored in a discriminating section 4. Next, a shift control section 5 shifts right the data stored in the register 2 by one bit for the EOR operation similarly. Further, shifting is made for some times and the state of shift with minimum total number of discidence is detected at the discrimination section, and two- dimensional coding is made at a coding circuit 6 based on the result. Simultaneously, the amount of shift is outputted from a shift counter 7.
JP9858381A 1981-06-25 1981-06-25 Information compressing system Pending JPS57212868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9858381A JPS57212868A (en) 1981-06-25 1981-06-25 Information compressing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9858381A JPS57212868A (en) 1981-06-25 1981-06-25 Information compressing system

Publications (1)

Publication Number Publication Date
JPS57212868A true JPS57212868A (en) 1982-12-27

Family

ID=14223670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9858381A Pending JPS57212868A (en) 1981-06-25 1981-06-25 Information compressing system

Country Status (1)

Country Link
JP (1) JPS57212868A (en)

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