JPS57157696A - Processing system for encoding between frames - Google Patents

Processing system for encoding between frames

Info

Publication number
JPS57157696A
JPS57157696A JP56043399A JP4339981A JPS57157696A JP S57157696 A JPS57157696 A JP S57157696A JP 56043399 A JP56043399 A JP 56043399A JP 4339981 A JP4339981 A JP 4339981A JP S57157696 A JPS57157696 A JP S57157696A
Authority
JP
Japan
Prior art keywords
frame
variable length
control signal
output
frame memory
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
JP56043399A
Other languages
Japanese (ja)
Other versions
JPS5915438B2 (en
Inventor
Hideo Kuroda
Takeshi Matsuoka
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP56043399A priority Critical patent/JPS5915438B2/en
Publication of JPS57157696A publication Critical patent/JPS57157696A/en
Publication of JPS5915438B2 publication Critical patent/JPS5915438B2/en
Expired 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To encode between frames always with high forecasting precision in two frame memories and to improve encoding efficiency by changing appropriately the output of one frame memory of which forecasting error value is smaller than that of the other. CONSTITUTION:A back picture is written in the 1st frame memory 2 and an input picture preceding by one frame is written in the 2nd frame memory 4. The difference between the picture element value 1 of a digitalized input picture signal and the outputs of respective frame memories 2, 4 are subtracted by respective subtractors 3, 5. A difference comparator 6 compares the absolute values of outputs from the subtractors 3, 5 and changes over switching circuits 7, 8 to the subtractor whose absolute value is smaller. The output of the switching circuit 7 is quantized and variable length encoded by a quantizing circuit 9 and a variable length encoder 11. A control signal indicating the status of the switching circuits 7, 8 is generated by a control signal generator 12 and the control signal and the output of the variable length encoder 11 are multiplexed by a multiplexer 13 and the multiplexed signal is sent through a buffer memory.
JP56043399A 1981-03-25 1981-03-25 Interframe encoding processing method Expired JPS5915438B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56043399A JPS5915438B2 (en) 1981-03-25 1981-03-25 Interframe encoding processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56043399A JPS5915438B2 (en) 1981-03-25 1981-03-25 Interframe encoding processing method

Publications (2)

Publication Number Publication Date
JPS57157696A true JPS57157696A (en) 1982-09-29
JPS5915438B2 JPS5915438B2 (en) 1984-04-09

Family

ID=12662694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56043399A Expired JPS5915438B2 (en) 1981-03-25 1981-03-25 Interframe encoding processing method

Country Status (1)

Country Link
JP (1) JPS5915438B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194588A (en) * 1983-04-20 1984-11-05 Nippon Telegr & Teleph Corp <Ntt> Encoding device between movement compensating frames
JPS59194589A (en) * 1983-04-20 1984-11-05 Nippon Telegr & Teleph Corp <Ntt> Encoding device between movement compensating frames
JPS62501532A (en) * 1984-12-14 1987-06-18 ヴィスタ　コミュニケーション　インストルメンツ　インコーポレーテッド video compression method
JPH02241285A (en) * 1989-03-15 1990-09-25 Matsushita Electric Ind Co Ltd Highly efficient encoder for moving image signal
JP2001045494A (en) * 2000-01-01 2001-02-16 Mitsubishi Electric Corp Image encoding device
US6798834B1 (en) 1996-08-15 2004-09-28 Mitsubishi Denki Kabushiki Kaisha Image coding apparatus with segment classification and segmentation-type motion prediction circuit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194588A (en) * 1983-04-20 1984-11-05 Nippon Telegr & Teleph Corp <Ntt> Encoding device between movement compensating frames
JPS59194589A (en) * 1983-04-20 1984-11-05 Nippon Telegr & Teleph Corp <Ntt> Encoding device between movement compensating frames
JPS6359312B2 (en) * 1983-04-20 1988-11-18
JPS6359313B2 (en) * 1983-04-20 1988-11-18
JPS62501532A (en) * 1984-12-14 1987-06-18 ヴィスタ　コミュニケーション　インストルメンツ　インコーポレーテッド video compression method
JPH02241285A (en) * 1989-03-15 1990-09-25 Matsushita Electric Ind Co Ltd Highly efficient encoder for moving image signal
US6798834B1 (en) 1996-08-15 2004-09-28 Mitsubishi Denki Kabushiki Kaisha Image coding apparatus with segment classification and segmentation-type motion prediction circuit
US8295350B2 (en) 1996-08-15 2012-10-23 Mitsubishi Denki Kabushiki Kaisha Image coding apparatus with segment classification and segmentation-type motion prediction circuit
JP2001045494A (en) * 2000-01-01 2001-02-16 Mitsubishi Electric Corp Image encoding device

Also Published As

Publication number Publication date
JPS5915438B2 (en) 1984-04-09

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