JPS5454507A - Coding processing system of adaptive expectancy - Google Patents

Coding processing system of adaptive expectancy

Info

Publication number
JPS5454507A
JPS5454507A JP12173477A JP12173477A JPS5454507A JP S5454507 A JPS5454507 A JP S5454507A JP 12173477 A JP12173477 A JP 12173477A JP 12173477 A JP12173477 A JP 12173477A JP S5454507 A JPS5454507 A JP S5454507A
Authority
JP
Japan
Prior art keywords
adaptive
expectancy
expected
circuit
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.)
Pending
Application number
JP12173477A
Other languages
Japanese (ja)
Inventor
Hiroshi Yasuda
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.)
NTT Inc
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 JP12173477A priority Critical patent/JPS5454507A/en
Publication of JPS5454507A publication Critical patent/JPS5454507A/en
Pending legal-status Critical Current

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  • Image Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE: To reduce the number of bits required for the delivery of coding output, by decreasing the error in expected quantization through optimization of the expectancy system and the quantized performance, by picking up the expected signal value made adaptive through the use of the signal value after coding.
CONSTITUTION: The adaptive expectancy from the adaptive expecting circuit 203 is subtracted from the input signal and the expected error is quantized and coded with the adaptive quantizing circuit 202. The circuits 203 and 202 are controlled with the expectancy judging circuit 205, the circuit 205 utilizes the signal after coding gives the optimum expecting characteristic and the quantizing performance to present signal, resulting that the expected value made adaptive can be picked up
COPYRIGHT: (C)1979,JPO&Japio
JP12173477A 1977-10-11 1977-10-11 Coding processing system of adaptive expectancy Pending JPS5454507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12173477A JPS5454507A (en) 1977-10-11 1977-10-11 Coding processing system of adaptive expectancy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12173477A JPS5454507A (en) 1977-10-11 1977-10-11 Coding processing system of adaptive expectancy

Publications (1)

Publication Number Publication Date
JPS5454507A true JPS5454507A (en) 1979-04-28

Family

ID=14818552

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12173477A Pending JPS5454507A (en) 1977-10-11 1977-10-11 Coding processing system of adaptive expectancy

Country Status (1)

Country Link
JP (1) JPS5454507A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109085A (en) * 1980-01-31 1981-08-29 Nec Corp Decoder for adaptive prediction for picture signal
JPS56109084A (en) * 1980-01-31 1981-08-29 Nec Corp Decoder for adaptive prediction for picture signal
JPS5972244A (en) * 1982-10-18 1984-04-24 Nippon Telegr & Teleph Corp <Ntt> Adaptive forecasting encoding system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109085A (en) * 1980-01-31 1981-08-29 Nec Corp Decoder for adaptive prediction for picture signal
JPS56109084A (en) * 1980-01-31 1981-08-29 Nec Corp Decoder for adaptive prediction for picture signal
JPS5972244A (en) * 1982-10-18 1984-04-24 Nippon Telegr & Teleph Corp <Ntt> Adaptive forecasting encoding system

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