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JPS6465980A - Entropy coding system - Google Patents

Entropy coding system

Info

Publication number
JPS6465980A
JPS6465980A JP62221954A JP22195487A JPS6465980A JP S6465980 A JPS6465980 A JP S6465980A JP 62221954 A JP62221954 A JP 62221954A JP 22195487 A JP22195487 A JP 22195487A JP S6465980 A JPS6465980 A JP S6465980A
Authority
JP
Japan
Prior art keywords
coding
data
length
huffman
variable
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
JP62221954A
Other languages
Japanese (ja)
Inventor
Yukitoshi Tsuboi
Masaaki Takizawa
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 JP62221954A priority Critical patent/JPS6465980A/en
Priority to US07/241,388 priority patent/US4939583A/en
Publication of JPS6465980A publication Critical patent/JPS6465980A/en
Pending legal-status Critical Current

Links

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  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

PURPOSE:To reduce the number of total bits after coding and to improve coding efficiency, by run length-coding insignificant data and Huffman-coding significant data through the use of different coding tables in a case when it is in immediately after insignificant data and in a case when it is not. CONSTITUTION:A picture coding circuit 1 executes prediction coding, and generates coding data from an input picture signal so as to output it. A first Huffman coding circuit 4 variable-length codes significant data which is not immediately after insignificant data by using a first Huffman coding table 5. A run-length coding circuit 7 variable-length-codes zero run length data by using a zero run length coding table 8. A second Huffman coding circuit 9 variable-length-codes significant data immediately after insignificant data by using a second Huffman coding table 10. A code selector 11 selects the outputs of respective coding circuits 4, 7 and 9. Thus, the number of total bits after coding can be reduced.
JP62221954A 1987-09-07 1987-09-07 Entropy coding system Pending JPS6465980A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62221954A JPS6465980A (en) 1987-09-07 1987-09-07 Entropy coding system
US07/241,388 US4939583A (en) 1987-09-07 1988-09-07 Entropy-coding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62221954A JPS6465980A (en) 1987-09-07 1987-09-07 Entropy coding system

Publications (1)

Publication Number Publication Date
JPS6465980A true JPS6465980A (en) 1989-03-13

Family

ID=16774762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62221954A Pending JPS6465980A (en) 1987-09-07 1987-09-07 Entropy coding system

Country Status (1)

Country Link
JP (1) JPS6465980A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6744925B2 (en) 1996-03-19 2004-06-01 Mitsubishi Denki Kabushiki Kaisha Encoding apparatus, decoding apparatus, encoding method, and decoding method
JP4778191B2 (en) * 2000-07-08 2011-09-21 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Unit sealing device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62108663A (en) * 1985-11-06 1987-05-19 Fujitsu Ltd Entropy recording system
JPS62116089A (en) * 1985-11-15 1987-05-27 Fujitsu Ltd Blocking entropy encoding system
JPS62120791A (en) * 1985-11-20 1987-06-02 Fujitsu Ltd Blocking entropy encoding system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62108663A (en) * 1985-11-06 1987-05-19 Fujitsu Ltd Entropy recording system
JPS62116089A (en) * 1985-11-15 1987-05-27 Fujitsu Ltd Blocking entropy encoding system
JPS62120791A (en) * 1985-11-20 1987-06-02 Fujitsu Ltd Blocking entropy encoding system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6744925B2 (en) 1996-03-19 2004-06-01 Mitsubishi Denki Kabushiki Kaisha Encoding apparatus, decoding apparatus, encoding method, and decoding method
US6754393B2 (en) 1996-03-19 2004-06-22 Mitsubishi Denki Kabushiki Kaisha Encoding apparatus, decoding apparatus, encoding method, and decoding method
JP4778191B2 (en) * 2000-07-08 2011-09-21 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Unit sealing device

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