JPS6434087A - Vector quantizer between frames - Google Patents

Vector quantizer between frames

Info

Publication number
JPS6434087A
JPS6434087A JP62190671A JP19067187A JPS6434087A JP S6434087 A JPS6434087 A JP S6434087A JP 62190671 A JP62190671 A JP 62190671A JP 19067187 A JP19067187 A JP 19067187A JP S6434087 A JPS6434087 A JP S6434087A
Authority
JP
Japan
Prior art keywords
stage
vector
encoding
vector quantizing
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
JP62190671A
Other languages
Japanese (ja)
Other versions
JPH0642736B2 (en
Inventor
Atsumichi Murakami
Kotaro Asai
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62190671A priority Critical patent/JPH0642736B2/en
Priority to DE3854445T priority patent/DE3854445T2/en
Priority to DE3856461T priority patent/DE3856461T2/en
Priority to EP94111117A priority patent/EP0624034A1/en
Priority to EP88106640A priority patent/EP0288963B1/en
Priority to EP94111118A priority patent/EP0624985B1/en
Priority to DE3856494T priority patent/DE3856494T2/en
Priority to EP94111120A priority patent/EP0624036A1/en
Priority to EP94111121A priority patent/EP0624037B1/en
Priority to EP94111119A priority patent/EP0624035A1/en
Priority to EP94111116A priority patent/EP0625854A1/en
Priority to AU15205/88A priority patent/AU595705B2/en
Priority to US07/187,052 priority patent/US4933761A/en
Priority to CA000565240A priority patent/CA1336619C/en
Publication of JPS6434087A publication Critical patent/JPS6434087A/en
Publication of JPH0642736B2 publication Critical patent/JPH0642736B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

PURPOSE:To enlarge the control range of the quantity of information generation by forming a vector quantizer in multistage constitution, setting the mean value of the block which is the encoding unit of a rear stage as a composing source and executing the vector quantization of a first stage. CONSTITUTION:Code data 6 encoded by a first stage vector quantizing encoding part 5 is decoded by a first stage vector quantizing decoding part 7, and a first stage decode signal 8 is obtained. By subtracter 9, the first stage decode signal 8 is subtracted from a between-frames difference signal 4, and a first stage error signal 10 is obtained. Since, for the first stage error signal 10, power is much smaller compared with the between-frames difference signal 4, an encoding whose encoding error small can be executed. The first stage error signal 10 is encoded by a second vector quantizing encoding part 11. At a buffer 21, a threshold 22 proportional to the accumulating quantity of variable-length- encoded data is outputted, given to the first stage vector quantizing encoding part 5 and the second vector quantizing encoding part 11, and the information generating quantity is controlled. Thus, the information generating quantity can be widely controlled without extremely damaging the quality of a reproducing image.
JP62190671A 1987-04-28 1987-07-30 Interframe vector quantizer Expired - Fee Related JPH0642736B2 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
JP62190671A JPH0642736B2 (en) 1987-07-30 1987-07-30 Interframe vector quantizer
DE3854445T DE3854445T2 (en) 1987-04-28 1988-04-26 Device for encoding and transmitting images.
DE3856461T DE3856461T2 (en) 1987-04-28 1988-04-26 Image coding and decoding system
EP94111117A EP0624034A1 (en) 1987-04-28 1988-04-26 Image coding and decoding system
EP88106640A EP0288963B1 (en) 1987-04-28 1988-04-26 Image coding and transmitting apparatus
EP94111118A EP0624985B1 (en) 1987-04-28 1988-04-26 Image coding and decoding system
DE3856494T DE3856494T2 (en) 1987-04-28 1988-04-26 Image coding system
EP94111120A EP0624036A1 (en) 1987-04-28 1988-04-26 Image coding and decoding system
EP94111121A EP0624037B1 (en) 1987-04-28 1988-04-26 Image coding system
EP94111119A EP0624035A1 (en) 1987-04-28 1988-04-26 Image coding and decoding system
EP94111116A EP0625854A1 (en) 1987-04-28 1988-04-26 Image coding and decoding system
AU15205/88A AU595705B2 (en) 1987-04-28 1988-04-27 Image coding and decoding device
US07/187,052 US4933761A (en) 1987-04-28 1988-04-27 Image coding and decoding device
CA000565240A CA1336619C (en) 1987-04-28 1988-04-27 Image coding and decoding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62190671A JPH0642736B2 (en) 1987-07-30 1987-07-30 Interframe vector quantizer

Publications (2)

Publication Number Publication Date
JPS6434087A true JPS6434087A (en) 1989-02-03
JPH0642736B2 JPH0642736B2 (en) 1994-06-01

Family

ID=16261955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62190671A Expired - Fee Related JPH0642736B2 (en) 1987-04-28 1987-07-30 Interframe vector quantizer

Country Status (1)

Country Link
JP (1) JPH0642736B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01144792A (en) * 1987-11-30 1989-06-07 Nec Home Electron Ltd Processing system for image data
JPH02174482A (en) * 1988-12-27 1990-07-05 Nippon Telegr & Teleph Corp <Ntt> Parallel coding processing system for moving picture signal
JPH02214389A (en) * 1989-02-15 1990-08-27 Kokusai Denshin Denwa Co Ltd <Kdd> Cascade coding system for moving picture
WO1995007005A1 (en) * 1993-08-30 1995-03-09 Sony Corporation Device and method for encoding image

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01144792A (en) * 1987-11-30 1989-06-07 Nec Home Electron Ltd Processing system for image data
JPH02174482A (en) * 1988-12-27 1990-07-05 Nippon Telegr & Teleph Corp <Ntt> Parallel coding processing system for moving picture signal
JPH02214389A (en) * 1989-02-15 1990-08-27 Kokusai Denshin Denwa Co Ltd <Kdd> Cascade coding system for moving picture
WO1995007005A1 (en) * 1993-08-30 1995-03-09 Sony Corporation Device and method for encoding image

Also Published As

Publication number Publication date
JPH0642736B2 (en) 1994-06-01

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees