JPH0211064B2 - - Google Patents

Info

Publication number
JPH0211064B2
JPH0211064B2 JP56049314A JP4931481A JPH0211064B2 JP H0211064 B2 JPH0211064 B2 JP H0211064B2 JP 56049314 A JP56049314 A JP 56049314A JP 4931481 A JP4931481 A JP 4931481A JP H0211064 B2 JPH0211064 B2 JP H0211064B2
Authority
JP
Japan
Prior art keywords
code
level
video
length
run
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 - Lifetime
Application number
JP56049314A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57164662A (en
Inventor
Hiromichi Fujisawa
Hirohide Endo
Hitoshi Komatsu
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56049314A priority Critical patent/JPS57164662A/ja
Priority to US06/364,540 priority patent/US4476495A/en
Publication of JPS57164662A publication Critical patent/JPS57164662A/ja
Publication of JPH0211064B2 publication Critical patent/JPH0211064B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Image Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
JP56049314A 1981-04-03 1981-04-03 Compression system for multilevel signal Granted JPS57164662A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56049314A JPS57164662A (en) 1981-04-03 1981-04-03 Compression system for multilevel signal
US06/364,540 US4476495A (en) 1981-04-03 1982-04-01 Multilevel signal compression method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56049314A JPS57164662A (en) 1981-04-03 1981-04-03 Compression system for multilevel signal

Publications (2)

Publication Number Publication Date
JPS57164662A JPS57164662A (en) 1982-10-09
JPH0211064B2 true JPH0211064B2 (en]) 1990-03-12

Family

ID=12827492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56049314A Granted JPS57164662A (en) 1981-04-03 1981-04-03 Compression system for multilevel signal

Country Status (2)

Country Link
US (1) US4476495A (en])
JP (1) JPS57164662A (en])

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517604A (en) * 1983-04-04 1985-05-14 International Business Machines Corporation Method for reducing line width variations in bilevel video images
US4563671A (en) * 1983-05-18 1986-01-07 At&T Bell Laboratories Coding technique
US4673977A (en) * 1985-06-20 1987-06-16 International Business Machines Corporation Method of spatially thresholding a discrete color image
JP2635308B2 (ja) * 1985-10-18 1997-07-30 キヤノン株式会社 画像処理装置
US4745473A (en) * 1986-03-24 1988-05-17 Harris Corporation Hybrid image compression system
US4698672A (en) * 1986-10-27 1987-10-06 Compression Labs, Inc. Coding system for reducing redundancy
JP2511158B2 (ja) * 1989-12-19 1996-06-26 シャープ株式会社 画像圧縮装置
US5182778A (en) * 1990-08-31 1993-01-26 Eastman Kodak Company Dot-matrix video enhancement for optical character recognition
US6604219B1 (en) * 2000-02-02 2003-08-05 Calimetrics, Inc. DC control of a multilevel signal
US7433519B2 (en) * 2003-04-04 2008-10-07 Avid Technology, Inc. Bitstream format for compressed image data
US7403561B2 (en) * 2003-04-04 2008-07-22 Avid Technology, Inc. Fixed bit rate, intraframe compression and decompression of video
US7228478B2 (en) * 2004-08-11 2007-06-05 International Business Machines Corporation Built-in self-test (BIST) for high performance circuits
CN102348111A (zh) * 2010-07-30 2012-02-08 国家卫星气象中心 用于静止气象卫星数据广播的数据压缩结构识别码
US10911155B2 (en) 2019-04-18 2021-02-02 Microsoft Technology Licensing, Llc System for throughput increases for optical communications
US10742326B1 (en) 2019-04-18 2020-08-11 Microsoft Technology Licensing, Llc Power-based encoding of data to be transmitted over an optical communication path
US10892847B2 (en) 2019-04-18 2021-01-12 Microsoft Technology Licensing, Llc Blind detection model optimization
US10998982B2 (en) 2019-04-18 2021-05-04 Microsoft Technology Licensing, Llc Transmitter for throughput increases for optical communications
US10742325B1 (en) 2019-04-18 2020-08-11 Microsoft Technology Licensing, Llc Power-based encoding of data to be transmitted over an optical communication path
US10756817B1 (en) 2019-04-18 2020-08-25 Microsoft Technology Licensing, Llc Power switching for systems implementing throughput improvements for optical communications
US10873392B2 (en) 2019-04-18 2020-12-22 Microsoft Technology Licensing, Llc Throughput increases for optical communications
US10686530B1 (en) 2019-04-18 2020-06-16 Microsoft Technology Licensing, Llc Power-based encoding of data to be transmitted over an optical communication path
US10862591B1 (en) 2019-04-18 2020-12-08 Microsoft Technology Licensing, Llc Unequal decision regions for throughput increases for optical communications
US11018776B2 (en) * 2019-04-18 2021-05-25 Microsoft Technology Licensing, Llc Power-based decoding of data received over an optical communication path
US10873393B2 (en) 2019-04-18 2020-12-22 Microsoft Technology Licensing, Llc Receiver training for throughput increases in optical communications
US10911152B2 (en) 2019-04-18 2021-02-02 Microsoft Technology Licensing, Llc Power-based decoding of data received over an optical communication path
US10938485B2 (en) 2019-04-18 2021-03-02 Microsoft Technology Licensing, Llc Error control coding with dynamic ranges
US10897315B2 (en) 2019-04-18 2021-01-19 Microsoft Technology Licensing, Llc Power-based decoding of data received over an optical communication path
US10951342B2 (en) 2019-04-18 2021-03-16 Microsoft Technology Licensing, Llc Throughput increases for optical communications
US10911141B1 (en) 2019-07-30 2021-02-02 Microsoft Technology Licensing, Llc Dynamically selecting a channel model for optical communications

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5242017A (en) * 1975-09-29 1977-04-01 Fuji Xerox Co Ltd Run length code processing method for facsimile signal
IT1091439B (it) * 1977-10-13 1985-07-06 Studi E Lab Telcomunicazioni S Procedimento e sistema di modulazione e demodulazione per trasmissione numerica
US4420771A (en) * 1981-02-09 1983-12-13 Bell Telephone Laboratories, Incorporated Technique for encoding multi-level signals
US4399467A (en) * 1981-10-13 1983-08-16 Ncr Canada Ltd. Method and apparatus for image data compression and decompression

Also Published As

Publication number Publication date
US4476495A (en) 1984-10-09
JPS57164662A (en) 1982-10-09

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