IT976174B - ENCODER FOR DIGITAL TRANSMISSION SYSTEMS WITH PULSE CODE WITH FREQUENCY-WEIGHTED NOISE REDUCTION - Google Patents

ENCODER FOR DIGITAL TRANSMISSION SYSTEMS WITH PULSE CODE WITH FREQUENCY-WEIGHTED NOISE REDUCTION

Info

Publication number
IT976174B
IT976174B IT71103/72A IT7110372A IT976174B IT 976174 B IT976174 B IT 976174B IT 71103/72 A IT71103/72 A IT 71103/72A IT 7110372 A IT7110372 A IT 7110372A IT 976174 B IT976174 B IT 976174B
Authority
IT
Italy
Prior art keywords
encoder
frequency
noise reduction
transmission systems
digital transmission
Prior art date
Application number
IT71103/72A
Other languages
Italian (it)
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Application granted granted Critical
Publication of IT976174B publication Critical patent/IT976174B/en

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
    • H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
    • H03M3/042—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM] with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]
IT71103/72A 1971-12-30 1972-12-27 ENCODER FOR DIGITAL TRANSMISSION SYSTEMS WITH PULSE CODE WITH FREQUENCY-WEIGHTED NOISE REDUCTION IT976174B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21405171A 1971-12-30 1971-12-30

Publications (1)

Publication Number Publication Date
IT976174B true IT976174B (en) 1974-08-20

Family

ID=22797582

Family Applications (1)

Application Number Title Priority Date Filing Date
IT71103/72A IT976174B (en) 1971-12-30 1972-12-27 ENCODER FOR DIGITAL TRANSMISSION SYSTEMS WITH PULSE CODE WITH FREQUENCY-WEIGHTED NOISE REDUCTION

Country Status (10)

Country Link
US (1) US3745562A (en)
JP (1) JPS5639577B2 (en)
BE (1) BE793564A (en)
CA (1) CA991311A (en)
DE (1) DE2263757C2 (en)
FR (1) FR2166220A1 (en)
GB (1) GB1370710A (en)
IT (1) IT976174B (en)
NL (1) NL7217828A (en)
SE (1) SE387796B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4123750A (en) * 1973-11-29 1978-10-31 Dynamics Research Corporation Signal processor for position encoder
FR2312884A1 (en) * 1975-05-27 1976-12-24 Ibm France BLOCK QUANTIFICATION PROCESS OF SAMPLES OF AN ELECTRIC SIGNAL, AND DEVICE FOR IMPLEMENTING THE SAID PROCESS
US4059800A (en) * 1976-06-30 1977-11-22 International Business Machines Corporation Digital multi-line companded delta modulator
JPS5952576B2 (en) * 1979-07-13 1984-12-20 株式会社東芝 A/D converter stabilization circuit
FR2463549A1 (en) * 1979-08-10 1981-02-20 Telecommunications Sa DEVICE FOR REDUCING THE DIGITAL RATE OF CODE INFORMATION
FR2492612A1 (en) * 1980-10-16 1982-04-23 Mecilec Sa INCREMENTAL DIGITAL ANALOGUE CONVERSION METHOD AND DEVICE
US4700362A (en) * 1983-10-07 1987-10-13 Dolby Laboratories Licensing Corporation A-D encoder and D-A decoder system
US5150120A (en) * 1991-01-03 1992-09-22 Harris Corp. Multiplexed sigma-delta A/D converter
JP3749752B2 (en) * 1995-03-24 2006-03-01 アイティーティー・マニュファクチャリング・エンタープライジズ・インコーポレーテッド Block adaptive differential pulse code modulation system
GB9509831D0 (en) * 1995-05-15 1995-07-05 Gerzon Michael A Lossless coding method for waveform data
GB0113627D0 (en) * 2001-06-05 2001-07-25 Univ Stirling Controller and method of controlling an apparatus
EP3331164B1 (en) 2015-08-27 2021-02-17 Osaka University Fluctuation oscillator, signal detecting device, and display device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927962A (en) * 1954-04-26 1960-03-08 Bell Telephone Labor Inc Transmission systems employing quantization
US3631520A (en) * 1968-08-19 1971-12-28 Bell Telephone Labor Inc Predictive coding of speech signals
US3628148A (en) * 1969-12-23 1971-12-14 Bell Telephone Labor Inc Adaptive delta modulation system
US3621396A (en) * 1970-05-08 1971-11-16 Bell Telephone Labor Inc Delta modulation information transmission system
US3742138A (en) * 1971-08-30 1973-06-26 Bell Telephone Labor Inc Predictive delayed encoders

Also Published As

Publication number Publication date
DE2263757A1 (en) 1973-07-05
NL7217828A (en) 1973-07-03
CA991311A (en) 1976-06-15
BE793564A (en) 1973-04-16
DE2263757C2 (en) 1982-11-18
FR2166220A1 (en) 1973-08-10
GB1370710A (en) 1974-10-16
JPS4875161A (en) 1973-10-09
US3745562A (en) 1973-07-10
SE387796B (en) 1976-09-13
JPS5639577B2 (en) 1981-09-14

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