JPS6465980A - Entropy coding system - Google Patents
Entropy coding systemInfo
- 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
Links
Landscapes
- 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.
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)
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)
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 |
-
1987
- 1987-09-07 JP JP62221954A patent/JPS6465980A/en active Pending
Patent Citations (3)
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)
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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