JPS6465979A - Entropy coding system - Google Patents

Entropy coding system

Info

Publication number
JPS6465979A
JPS6465979A JP22195387A JP22195387A JPS6465979A JP S6465979 A JPS6465979 A JP S6465979A JP 22195387 A JP22195387 A JP 22195387A JP 22195387 A JP22195387 A JP 22195387A JP S6465979 A JPS6465979 A JP S6465979A
Authority
JP
Japan
Prior art keywords
coding
data
run length
huffman
entropy
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
JP22195387A
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 JP22195387A priority Critical patent/JPS6465979A/en
Priority to US07/241,388 priority patent/US4939583A/en
Publication of JPS6465979A publication Critical patent/JPS6465979A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To improve coding efficiency, by executing coding through the use of one Huffman run length integrated coding table. CONSTITUTION:A picture coding circuit 1 executes prediction coding and generates coding data from picture signals. A data selector 4 selects and outputs zero run length data when coding data is insignificant, and coding data when coding data is significant. A Huffman run length integrated coding circuit 5 variable-length-codes zero run length data or coding data by using the Huffman run length integrated coding table 6 so as to generate coding codes. Since zero run length data having various run lengths are gathered into same EOB data, entropy in which coding data and zero run length data are added is reduced and the number of total bits which have been entropy-coded can be reduced.
JP22195387A 1987-09-07 1987-09-07 Entropy coding system Pending JPS6465979A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP22195387A JPS6465979A (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
JP22195387A JPS6465979A (en) 1987-09-07 1987-09-07 Entropy coding system

Publications (1)

Publication Number Publication Date
JPS6465979A true JPS6465979A (en) 1989-03-13

Family

ID=16774746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22195387A Pending JPS6465979A (en) 1987-09-07 1987-09-07 Entropy coding system

Country Status (1)

Country Link
JP (1) JPS6465979A (en)

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