CA1195004A - Noise and crosstalk reduction in analog to digital encoders - Google Patents

Noise and crosstalk reduction in analog to digital encoders

Info

Publication number
CA1195004A
CA1195004A CA000386387A CA386387A CA1195004A CA 1195004 A CA1195004 A CA 1195004A CA 000386387 A CA000386387 A CA 000386387A CA 386387 A CA386387 A CA 386387A CA 1195004 A CA1195004 A CA 1195004A
Authority
CA
Canada
Prior art keywords
encoder
reference signal
sample
analog signal
zero
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.)
Expired
Application number
CA000386387A
Other languages
English (en)
French (fr)
Inventor
Joseph F. Carriere
Wilmer B. Gaunt, Jr.
Joseph E. Landry
Dewayne A. Spires
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA1195004A publication Critical patent/CA1195004A/en
Expired legal-status Critical Current

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
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/40—Analogue value compared with reference values sequentially only, e.g. successive approximation type recirculation type
    • 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
    • H03M1/34—Analogue value compared with reference values
    • H03M1/38—Analogue value compared with reference values sequentially only, e.g. successive approximation type
    • H03M1/46—Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous conversion
    • H03M1/78—Simultaneous conversion using ladder network
    • H03M1/785—Simultaneous conversion using ladder network using resistors, i.e. R-2R ladders

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Analogue/Digital Conversion (AREA)
CA000386387A 1980-09-29 1981-09-22 Noise and crosstalk reduction in analog to digital encoders Expired CA1195004A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US192,432 1980-09-29
US06/192,432 US4323885A (en) 1980-09-29 1980-09-29 Noise and crosstalk reduction in mid-riser biased encoders

Publications (1)

Publication Number Publication Date
CA1195004A true CA1195004A (en) 1985-10-08

Family

ID=22709625

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000386387A Expired CA1195004A (en) 1980-09-29 1981-09-22 Noise and crosstalk reduction in analog to digital encoders

Country Status (9)

Country Link
US (1) US4323885A (US20030220297A1-20031127-C00009.png)
JP (1) JPS5787622A (US20030220297A1-20031127-C00009.png)
BE (1) BE890528A (US20030220297A1-20031127-C00009.png)
CA (1) CA1195004A (US20030220297A1-20031127-C00009.png)
DE (1) DE3137590A1 (US20030220297A1-20031127-C00009.png)
FR (1) FR2491275B1 (US20030220297A1-20031127-C00009.png)
GB (1) GB2084824B (US20030220297A1-20031127-C00009.png)
IT (1) IT1138656B (US20030220297A1-20031127-C00009.png)
NL (1) NL190215C (US20030220297A1-20031127-C00009.png)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475213A (en) * 1982-12-27 1984-10-02 At&T Bell Laboratories Digital code converter
FR2548851B1 (fr) * 1983-07-07 1986-11-14 Electricite De France Procede et installation d'analyse et de restitution de signal a echantillonnage et interpolation
US4620179A (en) * 1983-08-29 1986-10-28 Harris Corporation Method for successive approximation A/D conversion
DE3583071D1 (de) * 1984-07-06 1991-07-11 British Aerospace Analog-digital-umwandlung.
ATE58617T1 (de) * 1985-09-23 1990-12-15 Siemens Ag Schaltungsanordnung zur echokompensation.
JPH066630Y2 (ja) * 1986-09-04 1994-02-16 株式会社ケンウッド Ｄ／ａコンバ−タの歪低減回路
JPH01318431A (ja) * 1988-06-20 1989-12-22 Toshiba Corp アナログ／ディジタル変換回路
US5101395A (en) * 1990-06-11 1992-03-31 International Business Machines Corporation Data detection employing high-speed baseline tracking compensation
US5455582A (en) * 1992-12-17 1995-10-03 Ulsi Technology, Inc. Digital to analog converter employing R-2R ladders with substituted shunt arms
US6232907B1 (en) * 1998-05-29 2001-05-15 Texas Instruments Incorporated Polarity shifting flash A/D converter and method
US6573811B2 (en) 2001-02-07 2003-06-03 National Semiconductor Corporation Resistor tuning network and method for microelectronic RC-based filters
CN108322216B (zh) * 2018-03-07 2022-03-15 国网浙江省电力有限公司电力科学研究院 一种用于降低高速暂态量保护采样数据噪声影响的方法
KR102627516B1 (ko) * 2018-09-21 2024-01-19 한양대학교 산학협력단 알투알 저항 구조의 신호 전송 장치 및 이의 구동 방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646586A (en) * 1969-04-28 1972-02-29 Tennelec Analogue-to-digital converter system
US3735392A (en) * 1971-12-08 1973-05-22 Bell Telephone Labor Inc Bipolar analog-to-digital converter with double detection of the sign bit
SE369338B (US20030220297A1-20031127-C00009.png) * 1973-04-11 1974-08-19 Munters Ab Carl
US4151516A (en) * 1975-08-26 1979-04-24 Bell Telephone Laboratories, Incorporated PCM coder with shifting idle channel noise level
JPS5374314A (en) * 1976-12-14 1978-07-01 Nec Corp Transmitting system for composite video signal
US4193066A (en) * 1978-04-20 1980-03-11 The United States Of America As Represented By The Secretary Of The Air Force Automatic bias adjustment circuit for a successive ranged analog/digital converter
DE2836079C2 (de) * 1978-08-17 1986-01-16 Siemens AG, 1000 Berlin und 8000 München Digital-Analog-Umsetzer

Also Published As

Publication number Publication date
US4323885A (en) 1982-04-06
JPH0357656B2 (US20030220297A1-20031127-C00009.png) 1991-09-02
BE890528A (fr) 1982-01-18
JPS5787622A (en) 1982-06-01
DE3137590A1 (de) 1982-05-27
FR2491275B1 (fr) 1988-01-15
DE3137590C2 (US20030220297A1-20031127-C00009.png) 1990-02-22
NL190215B (nl) 1993-07-01
FR2491275A1 (fr) 1982-04-02
GB2084824B (en) 1984-12-19
IT8124192A0 (it) 1981-09-28
NL190215C (nl) 1993-12-01
IT1138656B (it) 1986-09-17
GB2084824A (en) 1982-04-15
NL8104433A (nl) 1982-04-16

Similar Documents

Publication Publication Date Title
CA1195004A (en) Noise and crosstalk reduction in analog to digital encoders
US4677423A (en) ADPCM coder-decoder including partial band energy transition detection
Schindler Delta modulation
EP0099397B1 (en) Adaptive differential pcm coding
US5995558A (en) Rob bit compensation system and method associated with a receiver or codec
US4475227A (en) Adaptive prediction
CA1083717A (en) Signal coding for telephone communication system
CA1208789A (en) Adpcm encoder/decoder with improved tracking
US4251802A (en) Analog to digital converter
US4348768A (en) PCM Codec using common D/A converter for encoding and decoding
US4386237A (en) NIC Processor using variable precision block quantization
CA1113609A (en) Code converters
CA1043462A (en) Direct digital logarithmic encoder
US4475213A (en) Digital code converter
CA1182924A (en) Capacitive dac to switched capacitor filter interface circuit
US4574383A (en) Decoder of adaptive differential pulse code modulation
US3703688A (en) Digital adaptive-to-linear delta modulated signal converter
US3438024A (en) Controlled bias feedback analog to digital converter
US4352191A (en) Hybrid companding delta modulation system
US3550004A (en) Feedback coders using weighted code companding on strings of equal bits
Duttweiler et al. Nearly instantaneous companding for nonuniformly quantized PCM
Un et al. Hybrid companding delta modulation
US4498173A (en) Technique for digital split-channel transmission using interpolative coders and decoders
Nishitani Tandem transcoding without distortion accumulation
US3593141A (en) Sign prediction coding for pulse code communication systems

Legal Events

Date Code Title Description
MKEX Expiry