JPS6228628B2 - - Google Patents

Info

Publication number
JPS6228628B2
JPS6228628B2 JP52153038A JP15303877A JPS6228628B2 JP S6228628 B2 JPS6228628 B2 JP S6228628B2 JP 52153038 A JP52153038 A JP 52153038A JP 15303877 A JP15303877 A JP 15303877A JP S6228628 B2 JPS6228628 B2 JP S6228628B2
Authority
JP
Japan
Prior art keywords
pixels
data
code
pixel
run length
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.)
Expired
Application number
JP52153038A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5384411A (en
Inventor
Saran Amitabu
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.)
Xerox Corp
Original Assignee
Xerox 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
Priority claimed from US05/756,662 external-priority patent/US4092677A/en
Priority claimed from US05/756,663 external-priority patent/US4092675A/en
Priority claimed from US05/755,313 external-priority patent/US4092665A/en
Priority claimed from US05/756,664 external-priority patent/US4136363A/en
Priority claimed from US05/755,309 external-priority patent/US4092676A/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of JPS5384411A publication Critical patent/JPS5384411A/ja
Publication of JPS6228628B2 publication Critical patent/JPS6228628B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/005—Statistical coding, e.g. Huffman, run length coding
    • 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
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/417—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding
    • H04N1/4175—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding involving the encoding of tone transitions with respect to tone transitions in a reference line

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
JP15303877A 1976-12-29 1977-12-21 Device for compressing data Granted JPS5384411A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US05/756,662 US4092677A (en) 1976-12-29 1976-12-29 Truncated run length encoding for fractionally difference modulated video signals
US05/756,663 US4092675A (en) 1976-12-29 1976-12-29 Truncated run length encoding with a modular variable length code format
US05/755,313 US4092665A (en) 1976-12-29 1976-12-29 Method and means for extracting variable length data from fixed length bytes
US05/756,664 US4136363A (en) 1976-12-29 1976-12-29 Truncated run length encoding
US05/755,309 US4092676A (en) 1976-12-29 1976-12-29 Block length multiple plus run length residue codes for run length encoding

Publications (2)

Publication Number Publication Date
JPS5384411A JPS5384411A (en) 1978-07-25
JPS6228628B2 true JPS6228628B2 (de) 1987-06-22

Family

ID=27542168

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15303877A Granted JPS5384411A (en) 1976-12-29 1977-12-21 Device for compressing data

Country Status (4)

Country Link
JP (1) JPS5384411A (de)
CA (1) CA1118091A (de)
DE (1) DE2758399C2 (de)
GB (1) GB1590664A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5537003A (en) * 1978-09-07 1980-03-14 Hitachi Ltd Facsimile transmitter having redundancy suppression function
CA1211300A (en) * 1983-03-02 1986-09-16 Thomas H. Lohr Bevel gear drive
US4517604A (en) * 1983-04-04 1985-05-14 International Business Machines Corporation Method for reducing line width variations in bilevel video images

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4938510A (de) * 1972-08-09 1974-04-10
JPS5123408A (ja) * 1974-07-24 1976-02-25 Nippon Steel Corp Kogyoyorohoshujiniokeru ronaikankisochi

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869569A (en) * 1972-05-16 1975-03-04 Xerox Corp Facsimile transceiving apparatus
US3830966A (en) * 1973-01-03 1974-08-20 Eg & G Inc Apparatus and method for transmitting a bandwidth compressed digital signal representation of a visible image

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4938510A (de) * 1972-08-09 1974-04-10
JPS5123408A (ja) * 1974-07-24 1976-02-25 Nippon Steel Corp Kogyoyorohoshujiniokeru ronaikankisochi

Also Published As

Publication number Publication date
CA1118091A (en) 1982-02-09
DE2758399C2 (de) 1986-04-10
DE2758399A1 (de) 1978-07-13
JPS5384411A (en) 1978-07-25
GB1590664A (en) 1981-06-03

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