JPS5460815A - Predictive coding band compressor device - Google Patents

Predictive coding band compressor device

Info

Publication number
JPS5460815A
JPS5460815A JP12788477A JP12788477A JPS5460815A JP S5460815 A JPS5460815 A JP S5460815A JP 12788477 A JP12788477 A JP 12788477A JP 12788477 A JP12788477 A JP 12788477A JP S5460815 A JPS5460815 A JP S5460815A
Authority
JP
Japan
Prior art keywords
value
signal
predictive
sampling
predictive coding
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
JP12788477A
Other languages
Japanese (ja)
Other versions
JPS6017184B2 (en
Inventor
Junichi Fujino
Shigeki Ikehata
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 JP12788477A priority Critical patent/JPS6017184B2/en
Publication of JPS5460815A publication Critical patent/JPS5460815A/en
Publication of JPS6017184B2 publication Critical patent/JPS6017184B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE:To enhance the predictive accuracy as well as to increase the average S/N and to decrease the effect of the slope overload, by using both the signal reproduction value preceding by one sample and the prediction error then. CONSTITUTION:Predictive error Xa between sampling value S obtained by sampling (a) the input signal and predictive value Pa is compressed (2) and then transmitted to the reception side via transmitter 7. In this case, compressed signal Ya is expanded (3) to obtain companding signal Qa. Value Pa is added (6)to signal Qa to obtain signal reproduction value Ra. Based on value Ra, predictive value Pa+1 of the next sampling time may be set through predicting unit 4a to be the sum of value Ra and the value obtained by multiplying signal Qa by fixed coefficient alpha.
JP12788477A 1977-10-24 1977-10-24 Predictive coding band compression device Expired JPS6017184B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12788477A JPS6017184B2 (en) 1977-10-24 1977-10-24 Predictive coding band compression device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12788477A JPS6017184B2 (en) 1977-10-24 1977-10-24 Predictive coding band compression device

Publications (2)

Publication Number Publication Date
JPS5460815A true JPS5460815A (en) 1979-05-16
JPS6017184B2 JPS6017184B2 (en) 1985-05-01

Family

ID=14971025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12788477A Expired JPS6017184B2 (en) 1977-10-24 1977-10-24 Predictive coding band compression device

Country Status (1)

Country Link
JP (1) JPS6017184B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6264795U (en) * 1985-10-07 1987-04-22

Also Published As

Publication number Publication date
JPS6017184B2 (en) 1985-05-01

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