FR2425182A1 - Procede et dispositif de reduction du bruit dans la transmission d'un signal numerique - Google Patents
Procede et dispositif de reduction du bruit dans la transmission d'un signal numeriqueInfo
- Publication number
- FR2425182A1 FR2425182A1 FR7828654A FR7828654A FR2425182A1 FR 2425182 A1 FR2425182 A1 FR 2425182A1 FR 7828654 A FR7828654 A FR 7828654A FR 7828654 A FR7828654 A FR 7828654A FR 2425182 A1 FR2425182 A1 FR 2425182A1
- Authority
- FR
- France
- Prior art keywords
- transmission
- signal
- digital signal
- reducing noise
- source
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
- H04B14/046—Systems or methods for reducing noise or bandwidth
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
- H03M1/0818—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of clock feed-through
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
- H03M1/0854—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of quantisation noise
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/64—Analogue/digital converters with intermediate conversion to phase of sinusoidal or similar periodical signals
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Analogue/Digital Conversion (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Noise Elimination (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
L'INVENTION CONCERNE LA TRANSMISSION DE L'INFORMATION. POUR REDUIRE L'INFLUENCE DU BRUIT SUR LE SIGNAL ANALOGIQUE QUI PROVIENT D'UNE SOURCE 10, UN DISPOSITIF DE TRANSMISSION NUMERIQUE COMPORTE NOTAMMENT UNE SOURCE DE SIGNAL DEFINI, 14, DONT LE SIGNAL DE SORTIE EST COMBINE AVEC LE SIGNAL DE LA SOURCE 10 DANS UN RESEAU DE SOMMATION 12. LE SIGNAL OBTENU EST CONVERTI SOUS FORME NUMERIQUE PUIS APPLIQUE AU SUPPORT DE TRANSMISSION 18. APPLICATION AUX RESEAUX TELEPHONIQUES NUMERIQUES.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/869,745 US4187466A (en) | 1978-01-16 | 1978-01-16 | Signal injection technique |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2425182A1 true FR2425182A1 (fr) | 1979-11-30 |
Family
ID=25354185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7828654A Pending FR2425182A1 (fr) | 1978-01-16 | 1978-10-06 | Procede et dispositif de reduction du bruit dans la transmission d'un signal numerique |
Country Status (7)
Country | Link |
---|---|
US (1) | US4187466A (fr) |
JP (1) | JPS5498508A (fr) |
CA (1) | CA1103763A (fr) |
DE (1) | DE2840243A1 (fr) |
FR (1) | FR2425182A1 (fr) |
GB (1) | GB2013053B (fr) |
NL (1) | NL7808436A (fr) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4447803A (en) * | 1980-01-09 | 1984-05-08 | Tektronix, Inc. | Offset digital dither generator |
JPS56136027A (en) * | 1980-03-27 | 1981-10-23 | Victor Co Of Japan Ltd | Signal processor having quantization distortion reduced |
ATE17175T1 (de) * | 1980-09-01 | 1986-01-15 | South Eastern Elec Board | Verfahren und geraet zum umwandeln einer analogen spannung in eine digitale darstellung. |
DE3310310A1 (de) * | 1983-03-22 | 1984-09-27 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Verfahren und anordnung zum interpolativen a/d-umsetzen |
US4710747A (en) * | 1984-03-09 | 1987-12-01 | Fairchild Semiconductor Corporation | Method and apparatus for improving the accuracy and resolution of an analog-to-digital converter (ADC) |
EP0167412B1 (fr) * | 1984-07-06 | 1991-06-05 | British Aerospace | Conversion analogique-numérique |
US4647968A (en) * | 1984-12-03 | 1987-03-03 | Rca Corporation | Analog-to-digital conversion system as for a narrow bandwidth signal processor |
DE3638006A1 (de) * | 1986-11-07 | 1988-05-19 | Ant Nachrichtentech | Verfahren zur dynamikvergroesserung eines digital verarbeiteten pcm-signales |
JPH0228713A (ja) * | 1988-04-26 | 1990-01-30 | Mitsubishi Electric Corp | 信号取得装置及び方法 |
DE3838686C2 (de) * | 1988-11-15 | 1993-10-21 | Man Ghh Schienenverkehr | Fahrzeugzelle |
JP3012887B2 (ja) * | 1989-03-13 | 2000-02-28 | 日本テキサス・インスツルメンツ株式会社 | 信号変換装置 |
DE69233256T2 (de) * | 1991-05-29 | 2004-05-27 | Pacific Microsonics, Inc., Berkeley | Verbesserungen in Codierung-/Decodierungssystemen |
US5448644A (en) * | 1992-06-29 | 1995-09-05 | Siemens Audiologische Technik Gmbh | Hearing aid |
US5351084A (en) * | 1992-07-02 | 1994-09-27 | Global Telecommunications Industries, Inc. | Compressed video bit rate reduction system |
DE69322762T2 (de) * | 1993-02-26 | 1999-06-02 | Schlumberger Industries S.A., Montrouge | AD-Wandler mit moduliertem Zittersignal |
US5525984A (en) * | 1993-08-06 | 1996-06-11 | Adc Telecommunications, Inc. | Optimization of weighted signal-to-noise ratio for a digital video encoder |
FR2720835B1 (fr) | 1994-06-01 | 1996-07-12 | Schlumberger Ind Sa | Circuit de mesure de courant comprenant un transformateur à inductance mutuelle et un circuit intégrateur. |
DE19514007C1 (de) * | 1995-04-13 | 1996-09-12 | Wandel & Goltermann | Verfahren zur Verbesserung des Klirrverhaltens von Analog-Digitalwandlern |
US6016113A (en) * | 1997-06-26 | 2000-01-18 | Binder; Yehuda | System for enhancing the accuracy of analog-digital-analog conversions |
US6172628B1 (en) | 1998-03-26 | 2001-01-09 | Ess Technology, Inc. | Tone modulation with square wave |
US6433723B1 (en) | 1998-07-30 | 2002-08-13 | Siemens Power Transmission & Distribution, Inc. | Analog-to-digital conversion with reduced error |
US6604211B1 (en) | 1999-08-31 | 2003-08-05 | Seagate Technology Llc | Tool for initiating and analyzing error recovery procedures in data storage devices |
DE10136491B4 (de) * | 2001-03-07 | 2004-11-25 | T-Mobile Deutschland Gmbh | Verfahren und Vorrichtung zur Verbesserung der Sprachqualität auf transparenten Telekommunikations-Übertragungswegen |
WO2002071731A1 (fr) | 2001-03-07 | 2002-09-12 | T-Mobile Deutschland Gmbh | Procede et dispositif pour ameliorer la qualite de la voix sur des voies de transmission de telecommunications transparentes |
US6781531B2 (en) * | 2002-01-15 | 2004-08-24 | Raytheon Company | Statistically based cascaded analog-to-digital converter calibration technique |
US7688976B2 (en) * | 2005-07-14 | 2010-03-30 | Tara Chand Singhal | Random wave envelope derived random numbers and their use in generating transient keys in communication security application part I |
US8213577B2 (en) * | 2010-08-31 | 2012-07-03 | Fluke Corporation | Phone test set modem |
EE05668B1 (et) * | 2011-08-30 | 2013-08-15 | Tallinna Tehnika�likool | Meetod ja seade ssteemide ja substantside laiaribaliseks analsimiseks |
US10033400B1 (en) | 2017-10-18 | 2018-07-24 | Schweitzer Engineering Laboratories, Inc. | Analog-to-digital converter verification using quantization noise properties |
US9985646B1 (en) | 2017-10-18 | 2018-05-29 | Schweitzer Engineering Laboratories, Inc. | Analog-to-digital converter verification using quantization noise properties |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3244808A (en) * | 1962-01-12 | 1966-04-05 | Massachusetts Inst Technology | Pulse code modulation with few amplitude steps |
US3562420A (en) * | 1967-03-13 | 1971-02-09 | Post Office | Pseudo random quantizing systems for transmitting television signals |
US3656152A (en) * | 1970-02-16 | 1972-04-11 | Hughes Aircraft Co | Improved a-d/d-a converter system |
US3855555A (en) * | 1970-09-04 | 1974-12-17 | Industrial Research Prod Inc | Delta modulator having low-level random noise characteristic |
US3877022A (en) * | 1973-05-14 | 1975-04-08 | Weston Instruments Inc | Enhancing resolution in analog-to-digital conversion by adding statistically controlled noise to the analog input signal |
FR2308257A1 (fr) * | 1975-04-16 | 1976-11-12 | Rolm Corp | Procede et dispositif de transmission d'informations |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3259690A (en) * | 1961-09-11 | 1966-07-05 | Kokusai Denshin Denwa Co Ltd | Coding system for television signals |
US3614622A (en) * | 1968-04-30 | 1971-10-19 | Codex Corp | Data transmission method and system |
US3641433A (en) * | 1969-06-09 | 1972-02-08 | Us Air Force | Transmitted reference synchronization system |
JPS5837735B2 (ja) * | 1974-10-23 | 1983-08-18 | ソニー株式会社 | パルスヘンチヨウホウシキ |
US4065718A (en) * | 1976-12-30 | 1977-12-27 | Motorola, Inc. | Multipath communications system |
-
1978
- 1978-01-16 US US05/869,745 patent/US4187466A/en not_active Expired - Lifetime
- 1978-08-09 CA CA308,980A patent/CA1103763A/fr not_active Expired
- 1978-08-15 NL NL7808436A patent/NL7808436A/xx not_active Application Discontinuation
- 1978-09-15 DE DE19782840243 patent/DE2840243A1/de active Granted
- 1978-10-06 FR FR7828654A patent/FR2425182A1/fr active Pending
- 1978-11-07 JP JP13636778A patent/JPS5498508A/ja active Granted
-
1979
- 1979-01-10 GB GB79870A patent/GB2013053B/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3244808A (en) * | 1962-01-12 | 1966-04-05 | Massachusetts Inst Technology | Pulse code modulation with few amplitude steps |
US3562420A (en) * | 1967-03-13 | 1971-02-09 | Post Office | Pseudo random quantizing systems for transmitting television signals |
US3656152A (en) * | 1970-02-16 | 1972-04-11 | Hughes Aircraft Co | Improved a-d/d-a converter system |
US3855555A (en) * | 1970-09-04 | 1974-12-17 | Industrial Research Prod Inc | Delta modulator having low-level random noise characteristic |
US3877022A (en) * | 1973-05-14 | 1975-04-08 | Weston Instruments Inc | Enhancing resolution in analog-to-digital conversion by adding statistically controlled noise to the analog input signal |
FR2308257A1 (fr) * | 1975-04-16 | 1976-11-12 | Rolm Corp | Procede et dispositif de transmission d'informations |
Also Published As
Publication number | Publication date |
---|---|
NL7808436A (nl) | 1979-07-18 |
GB2013053A (en) | 1979-08-01 |
JPS6318372B2 (fr) | 1988-04-18 |
GB2013053B (en) | 1982-08-18 |
US4187466A (en) | 1980-02-05 |
DE2840243C2 (fr) | 1988-05-26 |
JPS5498508A (en) | 1979-08-03 |
DE2840243A1 (de) | 1979-07-19 |
CA1103763A (fr) | 1981-06-23 |
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