JPS57166730A - Delta-m signal synthesizing and decoding circuit - Google Patents

Delta-m signal synthesizing and decoding circuit

Info

Publication number
JPS57166730A
JPS57166730A JP5187381A JP5187381A JPS57166730A JP S57166730 A JPS57166730 A JP S57166730A JP 5187381 A JP5187381 A JP 5187381A JP 5187381 A JP5187381 A JP 5187381A JP S57166730 A JPS57166730 A JP S57166730A
Authority
JP
Japan
Prior art keywords
signal
delta
decoded
inputted
electric power
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
JP5187381A
Other languages
Japanese (ja)
Inventor
Yoshiji Masuda
Taketoshi Ando
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.)
KEISATSUCHIYOU CHOKAN
Original Assignee
KEISATSUCHIYOU CHOKAN
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 KEISATSUCHIYOU CHOKAN filed Critical KEISATSUCHIYOU CHOKAN
Priority to JP5187381A priority Critical patent/JPS57166730A/en
Publication of JPS57166730A publication Critical patent/JPS57166730A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/02—Delta modulation, i.e. one-bit differential modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

PURPOSE:To improve a distortion factor by adding a signal, obtained by decoding an NRZ signal as it is, to a signal decoded after delay. CONSTITUTION:An NRZ signal inputted to a terminal 7 is decoded by the 1st delta-M digital signal decoding circuit 8' and then inputted to an adder 10. Further, part of the NRZ signal is extracted and delayed by an n-bit delay circuit 9, whose output is decoded by the 2nd delta-M digital signal decoding cirucit 8'' and inputted to an adder 10. A distortion component for the original signal has noise-like distribution in a transmission band, so it is added noncorrelatively bt delay. As a result, signal electric power increases. An increase in signal electric power is greater than that in distortion electric power, so a distortion factor is improved.
JP5187381A 1981-04-08 1981-04-08 Delta-m signal synthesizing and decoding circuit Pending JPS57166730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5187381A JPS57166730A (en) 1981-04-08 1981-04-08 Delta-m signal synthesizing and decoding circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5187381A JPS57166730A (en) 1981-04-08 1981-04-08 Delta-m signal synthesizing and decoding circuit

Publications (1)

Publication Number Publication Date
JPS57166730A true JPS57166730A (en) 1982-10-14

Family

ID=12898994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5187381A Pending JPS57166730A (en) 1981-04-08 1981-04-08 Delta-m signal synthesizing and decoding circuit

Country Status (1)

Country Link
JP (1) JPS57166730A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115761A (en) * 1975-04-04 1976-10-12 Hitachi Ltd Analogue digital converter
JPS5378157A (en) * 1976-12-22 1978-07-11 Fujitsu Ltd Delta modulatio circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115761A (en) * 1975-04-04 1976-10-12 Hitachi Ltd Analogue digital converter
JPS5378157A (en) * 1976-12-22 1978-07-11 Fujitsu Ltd Delta modulatio circuit

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