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 REDUCTIONInfo
- 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
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]
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Analogue/Digital Conversion (AREA)
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)
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)
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 |
-
0
- BE BE793564D patent/BE793564A/en unknown
-
1971
- 1971-12-30 US US00214051A patent/US3745562A/en not_active Expired - Lifetime
-
1972
- 1972-07-11 CA CA146,838A patent/CA991311A/en not_active Expired
- 1972-12-18 SE SE7216544A patent/SE387796B/en unknown
- 1972-12-27 IT IT71103/72A patent/IT976174B/en active
- 1972-12-28 DE DE2263757A patent/DE2263757C2/en not_active Expired
- 1972-12-28 GB GB5975472A patent/GB1370710A/en not_active Expired
- 1972-12-29 NL NL7217828A patent/NL7217828A/xx not_active Application Discontinuation
- 1972-12-29 JP JP400673A patent/JPS5639577B2/ja not_active Expired
- 1972-12-29 FR FR7247074A patent/FR2166220A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CA991311A (en) | 1976-06-15 |
BE793564A (en) | 1973-04-16 |
GB1370710A (en) | 1974-10-16 |
JPS4875161A (en) | 1973-10-09 |
NL7217828A (en) | 1973-07-03 |
SE387796B (en) | 1976-09-13 |
FR2166220A1 (en) | 1973-08-10 |
US3745562A (en) | 1973-07-10 |
JPS5639577B2 (en) | 1981-09-14 |
DE2263757C2 (en) | 1982-11-18 |
DE2263757A1 (en) | 1973-07-05 |
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