JPS5779733A - Waveform decoder - Google Patents

Waveform decoder

Info

Publication number
JPS5779733A
JPS5779733A JP15483380A JP15483380A JPS5779733A JP S5779733 A JPS5779733 A JP S5779733A JP 15483380 A JP15483380 A JP 15483380A JP 15483380 A JP15483380 A JP 15483380A JP S5779733 A JPS5779733 A JP S5779733A
Authority
JP
Japan
Prior art keywords
output
sampling interval
correlation
digital signal
buffer circuit
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
JP15483380A
Other languages
Japanese (ja)
Inventor
Fumio Akashi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP15483380A priority Critical patent/JPS5779733A/en
Publication of JPS5779733A publication Critical patent/JPS5779733A/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
    • H03M3/022—Delta modulation, i.e. one-bit differential modulation with adaptable step size, e.g. adaptive delta modulation [ADM]

Landscapes

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

Abstract

PURPOSE:To decode a delta modulation signal adaptively given for time interval, by taking correlativity between an incoming digital signal and a digital signal given previously and adjusting the sampling interval according to the output of correlativity. CONSTITUTION:A digital signal incoming from a terminal 1 is applied to a buffer circuit 3 and outputted from a buffer circuit 3 with an output of a sampling interval adjusting circuit 9. The output signal is delayed for one sampling interval at a shift register 7 and the correlation with the output of the buffer 3 is taken at a correlater 8. The output of the correlator 3 is applied to the adjusting circuit 9, the sampling interval is made shorter without correlation and longer with correlation. The output of the buffer circuit 3 is decoded through an integrator 4 and a low-pass filter 6.
JP15483380A 1980-11-04 1980-11-04 Waveform decoder Pending JPS5779733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15483380A JPS5779733A (en) 1980-11-04 1980-11-04 Waveform decoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15483380A JPS5779733A (en) 1980-11-04 1980-11-04 Waveform decoder

Publications (1)

Publication Number Publication Date
JPS5779733A true JPS5779733A (en) 1982-05-19

Family

ID=15592870

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15483380A Pending JPS5779733A (en) 1980-11-04 1980-11-04 Waveform decoder

Country Status (1)

Country Link
JP (1) JPS5779733A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991181A (en) * 1972-12-28 1974-08-30
JPS54100652A (en) * 1978-01-25 1979-08-08 Mitsubishi Electric Corp Sampler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4991181A (en) * 1972-12-28 1974-08-30
JPS54100652A (en) * 1978-01-25 1979-08-08 Mitsubishi Electric Corp Sampler

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