BR9911734A - Método e equipamento para correção de deslocamento cc em conversores digital-para-analógico - Google Patents
Método e equipamento para correção de deslocamento cc em conversores digital-para-analógicoInfo
- Publication number
- BR9911734A BR9911734A BR9911734-7A BR9911734A BR9911734A BR 9911734 A BR9911734 A BR 9911734A BR 9911734 A BR9911734 A BR 9911734A BR 9911734 A BR9911734 A BR 9911734A
- Authority
- BR
- Brazil
- Prior art keywords
- signals
- digital
- analog
- offset
- transmission signals
- Prior art date
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
- H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
-
- 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
- H03M1/0602—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic
- H03M1/0604—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic at one point, i.e. by adjusting a single reference value, e.g. bias or gain error
- H03M1/0607—Offset or drift compensation
-
- 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
- H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
- H03M1/0675—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy
- H03M1/0678—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy using additional components or elements, e.g. dummy components
- H03M1/068—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy using additional components or elements, e.g. dummy components the original and additional components or elements being complementary to each other, e.g. CMOS
- H03M1/0682—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence using redundancy using additional components or elements, e.g. dummy components the original and additional components or elements being complementary to each other, e.g. CMOS using a differential network structure, i.e. symmetrical with respect to ground
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Dc Digital Transmission (AREA)
- Automatic Disk Changers (AREA)
Abstract
"MéTODO E EQUIPAMENTO PARA CORREçãO DE DESLOCAMENTO CC EM CONVERSORES DIGITAL-PARA-ANALóGICO". Um método e equipamento para corrigir de modo adaptável erros de offset ou deslocamento CC impostos sobre sinais em um dispositivo de comunicação. A invenção inclui um circuito de correção de loop de realimentação (122) e um método para medir e reduzir os erros de offset ou deslocamento CC impostos sobre sinais de transmissão analógicos por conversores digital-para-analógico (DACS) de transmissão (102) e filtros analógicos de reconstrução associados. Um loop de realimentação digital é usado para remover erros de offset CC dos sinais de transmissão analógicos antes da transmissão. Em uma modalidade, o loop de realimentação digital inclui um par de conversores analógico para digital, um circuito de correção de offset CC digital (222) e um par de adicionadores (228, 230) . os sinais de transmissão são digitalizados, filtrados e digitalmente processados pelo circuito de correção (222) para gerar sinais de correção de offset que são iguais ao erro de offset CC indesejado presente nos sinais de transmissão. Os sinais de correção são adicionados aos sinais digitais de banda base de entrada desse modo removendo os erros de offset CC indesejados dos sinais de transmissão.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/107,054 US6154158A (en) | 1998-06-30 | 1998-06-30 | Digital-to-analog converter D.C. offset correction comparing converter input and output signals |
PCT/US1999/014656 WO2000001073A1 (en) | 1998-06-30 | 1999-06-29 | Method and apparatus for d.c. offset correction in digital-to-analog converters |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9911734A true BR9911734A (pt) | 2002-04-23 |
Family
ID=22314600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9911734-7A BR9911734A (pt) | 1998-06-30 | 1999-06-29 | Método e equipamento para correção de deslocamento cc em conversores digital-para-analógico |
Country Status (14)
Country | Link |
---|---|
US (2) | US6154158A (pt) |
EP (1) | EP1090461B1 (pt) |
JP (2) | JP4422333B2 (pt) |
KR (1) | KR100562730B1 (pt) |
CN (1) | CN1183678C (pt) |
AT (1) | ATE313169T1 (pt) |
AU (1) | AU759884B2 (pt) |
BR (1) | BR9911734A (pt) |
CA (1) | CA2334999A1 (pt) |
DE (1) | DE69928934T2 (pt) |
ES (1) | ES2258334T3 (pt) |
HK (1) | HK1036530A1 (pt) |
ID (1) | ID28175A (pt) |
WO (1) | WO2000001073A1 (pt) |
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JPS60165831A (ja) * | 1984-02-09 | 1985-08-29 | Sharp Corp | Pcm方式再生装置 |
JPH02308643A (ja) * | 1989-05-24 | 1990-12-21 | Toshiba Corp | ディジタル変調器 |
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-
1998
- 1998-06-30 US US09/107,054 patent/US6154158A/en not_active Expired - Lifetime
-
1999
- 1999-06-29 JP JP2000557551A patent/JP4422333B2/ja not_active Expired - Fee Related
- 1999-06-29 CN CNB998079693A patent/CN1183678C/zh not_active Expired - Fee Related
- 1999-06-29 ES ES99930809T patent/ES2258334T3/es not_active Expired - Lifetime
- 1999-06-29 ID IDW20010243A patent/ID28175A/id unknown
- 1999-06-29 EP EP99930809A patent/EP1090461B1/en not_active Expired - Lifetime
- 1999-06-29 AU AU47261/99A patent/AU759884B2/en not_active Ceased
- 1999-06-29 CA CA002334999A patent/CA2334999A1/en not_active Abandoned
- 1999-06-29 AT AT99930809T patent/ATE313169T1/de not_active IP Right Cessation
- 1999-06-29 BR BR9911734-7A patent/BR9911734A/pt not_active IP Right Cessation
- 1999-06-29 WO PCT/US1999/014656 patent/WO2000001073A1/en active IP Right Grant
- 1999-06-29 DE DE69928934T patent/DE69928934T2/de not_active Expired - Lifetime
- 1999-06-29 KR KR1020007014962A patent/KR100562730B1/ko not_active IP Right Cessation
-
2000
- 2000-09-14 US US09/662,265 patent/US6278391B1/en not_active Expired - Lifetime
-
2001
- 2001-10-17 HK HK01107246A patent/HK1036530A1/xx not_active IP Right Cessation
-
2009
- 2009-08-21 JP JP2009192162A patent/JP4589443B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU759884B2 (en) | 2003-05-01 |
HK1036530A1 (en) | 2002-01-04 |
EP1090461B1 (en) | 2005-12-14 |
WO2000001073A1 (en) | 2000-01-06 |
US6278391B1 (en) | 2001-08-21 |
JP4422333B2 (ja) | 2010-02-24 |
ES2258334T3 (es) | 2006-08-16 |
JP4589443B2 (ja) | 2010-12-01 |
KR100562730B1 (ko) | 2006-03-20 |
AU4726199A (en) | 2000-01-17 |
KR20010053265A (ko) | 2001-06-25 |
DE69928934T2 (de) | 2006-08-24 |
US6154158A (en) | 2000-11-28 |
JP2002519925A (ja) | 2002-07-02 |
ID28175A (id) | 2001-05-10 |
JP2010045792A (ja) | 2010-02-25 |
ATE313169T1 (de) | 2005-12-15 |
CA2334999A1 (en) | 2000-01-06 |
EP1090461A1 (en) | 2001-04-11 |
CN1183678C (zh) | 2005-01-05 |
DE69928934D1 (de) | 2006-01-19 |
CN1307749A (zh) | 2001-08-08 |
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B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 6,7 E 8A ANUIDADES. |
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B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1911 DE 21/08/2007. |