JPS57152247A - Decoding device for picture signal - Google Patents

Decoding device for picture signal

Info

Publication number
JPS57152247A
JPS57152247A JP56037574A JP3757481A JPS57152247A JP S57152247 A JPS57152247 A JP S57152247A JP 56037574 A JP56037574 A JP 56037574A JP 3757481 A JP3757481 A JP 3757481A JP S57152247 A JPS57152247 A JP S57152247A
Authority
JP
Japan
Prior art keywords
signal
forecasting
inputted
error
picture signal
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.)
Granted
Application number
JP56037574A
Other languages
Japanese (ja)
Other versions
JPH0237737B2 (en
Inventor
Shoji Mizuno
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56037574A priority Critical patent/JPS57152247A/en
Publication of JPS57152247A publication Critical patent/JPS57152247A/en
Publication of JPH0237737B2 publication Critical patent/JPH0237737B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

PURPOSE:To perform high-efficiency compression encoding without paying attention to variation in the distribution of the generation probability of an error in forecasting, by finding the forecasting error signal of a multilevel picture signal being inputted by using a picture signal having been inputted, and grouping the signal by mode signal values. CONSTITUTION:A picture signal having been inputted is stored in a shift register 1 for picture signal storage, a forecasting signal generator 2 generates a forecasting signal X, and a subtracting circuit 3 obtains a forecasting error signal (e) regarding a multilevel picture signal X being inputted. A mode signal M representing the probability of correct forecasting is generated by a mode signal generator 4 and applied to a forecasting error signal encoding circuit 5 together with the error signal from the circuit 3. Then, the picture signal inputted already is used to generate a mode signal for the forecasting error signal, and the mode signal is used to compress and encode the error signal, thus achieving high- efficiency compression encoding without paying attention to the variation of the distribution of the generation probability of a forecasting error.
JP56037574A 1981-03-16 1981-03-16 Decoding device for picture signal Granted JPS57152247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56037574A JPS57152247A (en) 1981-03-16 1981-03-16 Decoding device for picture signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56037574A JPS57152247A (en) 1981-03-16 1981-03-16 Decoding device for picture signal

Publications (2)

Publication Number Publication Date
JPS57152247A true JPS57152247A (en) 1982-09-20
JPH0237737B2 JPH0237737B2 (en) 1990-08-27

Family

ID=12501296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56037574A Granted JPS57152247A (en) 1981-03-16 1981-03-16 Decoding device for picture signal

Country Status (1)

Country Link
JP (1) JPS57152247A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53105112A (en) * 1977-02-24 1978-09-13 Mitsubishi Electric Corp Picture and writing communication equipment
JPS5558673A (en) * 1978-10-26 1980-05-01 Oki Electric Ind Co Ltd Signal transmission system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53105112A (en) * 1977-02-24 1978-09-13 Mitsubishi Electric Corp Picture and writing communication equipment
JPS5558673A (en) * 1978-10-26 1980-05-01 Oki Electric Ind Co Ltd Signal transmission system

Also Published As

Publication number Publication date
JPH0237737B2 (en) 1990-08-27

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