BR9913067A - Conversor analógico para digital - Google Patents
Conversor analógico para digitalInfo
- Publication number
- BR9913067A BR9913067A BR9913067-0A BR9913067A BR9913067A BR 9913067 A BR9913067 A BR 9913067A BR 9913067 A BR9913067 A BR 9913067A BR 9913067 A BR9913067 A BR 9913067A
- Authority
- BR
- Brazil
- Prior art keywords
- converter
- constant
- bit
- floating
- code
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
- G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
- G06F7/50—Adding; Subtracting
-
- 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
- H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
- H03M1/186—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedforward mode, i.e. by determining the range to be selected directly from the input signal
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Pure & Applied Mathematics (AREA)
- Computing Systems (AREA)
- Mathematical Optimization (AREA)
- General Engineering & Computer Science (AREA)
- Analogue/Digital Conversion (AREA)
- Amplifiers (AREA)
Abstract
"CONVERSOR ANALóGICO PARA DIGITAL" A demanda sobre conversor A/D de muito alta resolução pode ser eliminada utilizando o conversor inventado A/D de ponto flutuante quando a resolução é utilizada simplesmente para cobrir a faixa dinâmica de sinal ao invés da precisão de quantização. Isto pode ser conseguido produzindo m(>1) sinais analógicos amplificados com amplificações 2^ (i-1)k^ onde k= constante e i = 1, 2, ...m. O máximo sinal amplificado linearmente será selecionado por meio de um circuito lógico depois da amostragem e convertido para um código de dados digitais de n-bits por meio de um conversor A/D. Ao mesmo tempo o circuito lógico produz um código de marcação lógico de m-bits. O código de dados de n-bits (u), o código de marcação lógico de m-bits (v) e a constante k são combinados para formar uma saída digital final uv^ k^ com n+(m-1)k bits. Desta maneira a resolução e faixa dinâmica podem ser projetadas de maneira independente. Diferentemente da solução amplificador logarítmico conhecida, o conversor A/D de ponto flutuante fornece uma saída de código digital linear diretamente sem utilizar qualquer tabela de consulta. Para sinais grandes e pequenos, as resoluções efetivas são mantidas constante (ou quase constante para ser preciso). é também muito útil trabalhar com uma faixa de entrada pequena imposta por uma voltagem de suprimento de baixa potência uma vez que sua faixa de entrada virtual é muito maior do que a real. Como um conversor A/D, sua distribuição de precisão ao longo da amplitude do sinal é mais racional, uma vantagem similar àquela de uma representação de número de ponto flutuante.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9802787A SE512561C2 (sv) | 1998-08-20 | 1998-08-20 | Analog-till-digitalomvandlare av flyttalstyp |
| SE9901624A SE9901624D0 (sv) | 1999-05-04 | 1999-05-04 | Floating-point analog-to-digital converter |
| PCT/SE1999/001406 WO2000011790A1 (en) | 1998-08-20 | 1999-08-19 | Floating-point analog-to-digital converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9913067A true BR9913067A (pt) | 2001-05-08 |
Family
ID=26663369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9913067-0A BR9913067A (pt) | 1998-08-20 | 1999-08-19 | Conversor analógico para digital |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US6317070B1 (pt) |
| EP (1) | EP1105971B1 (pt) |
| JP (1) | JP4361693B2 (pt) |
| KR (1) | KR100733640B1 (pt) |
| CN (1) | CN1135704C (pt) |
| AT (1) | ATE264024T1 (pt) |
| AU (1) | AU756364B2 (pt) |
| BR (1) | BR9913067A (pt) |
| DE (1) | DE69916291D1 (pt) |
| EE (1) | EE04074B1 (pt) |
| HK (1) | HK1041985B (pt) |
| IL (1) | IL141380A (pt) |
| WO (1) | WO2000011790A1 (pt) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10005605B4 (de) * | 2000-02-09 | 2004-04-08 | Infineon Technologies Ag | Analoge Vorstufe |
| US20040134988A1 (en) * | 2003-01-09 | 2004-07-15 | Hand Held Products, Inc. | Analog-to-digital converter with automatic range and sensitivity adjustment |
| US20060092067A1 (en) * | 2004-10-29 | 2006-05-04 | Don Liu | Front end circuit of voltage regulator |
| US7643573B2 (en) * | 2006-03-17 | 2010-01-05 | Cirrus Logic, Inc. | Power management in a data acquisition system |
| KR100823835B1 (ko) | 2006-12-29 | 2008-04-21 | 엘에스산전 주식회사 | 아날로그/디지털 변환기 및 그 방법 |
| US7705763B2 (en) * | 2008-07-21 | 2010-04-27 | Tokyo Institute Of Technology | A-D convert apparatus |
| WO2010150699A1 (ja) * | 2009-06-24 | 2010-12-29 | 旭硝子株式会社 | 撥水撥油剤および撥水撥油剤組成物 |
| GB201102562D0 (en) * | 2011-02-14 | 2011-03-30 | Nordic Semiconductor Asa | Analogue-to-digital converter |
| US8456340B2 (en) * | 2011-04-13 | 2013-06-04 | Analog Devices, Inc. | Self-timed digital-to-analog converter |
| US8698666B1 (en) | 2012-10-01 | 2014-04-15 | Omnivision Technologies, Inc. | Random estimation analog-to-digital converter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2441956A1 (fr) * | 1978-11-17 | 1980-06-13 | Inst Francais Du Petrole | Methode d'amplification de signaux multiplexes et dispositif de mise en oeuvre |
| FR2592537B1 (fr) * | 1985-12-30 | 1991-05-31 | Inst Francais Du Petrole | Dispositif pour l'amplification et l'echantillonnage de signaux analogiques multiplexes. |
| FR2626423A1 (fr) * | 1988-01-21 | 1989-07-28 | Inst Francais Du Petrole | Dispositif d'acquisition pour la numerisation de signaux a grande dynamique |
| US5053770A (en) * | 1990-05-18 | 1991-10-01 | Analogic Corporation | Digital autozero circuit operable in a plurality of modes with separate storage for offset corrections for each mode |
| US5061927A (en) * | 1990-07-31 | 1991-10-29 | Q-Dot, Inc. | Floating point analog to digital converter |
-
1999
- 1999-08-18 US US09/376,012 patent/US6317070B1/en not_active Expired - Lifetime
- 1999-08-19 EE EEP200100100A patent/EE04074B1/xx unknown
- 1999-08-19 IL IL14138099A patent/IL141380A/en not_active IP Right Cessation
- 1999-08-19 EP EP99943592A patent/EP1105971B1/en not_active Expired - Lifetime
- 1999-08-19 JP JP2000566952A patent/JP4361693B2/ja not_active Expired - Lifetime
- 1999-08-19 WO PCT/SE1999/001406 patent/WO2000011790A1/en active IP Right Grant
- 1999-08-19 AU AU56659/99A patent/AU756364B2/en not_active Expired
- 1999-08-19 AT AT99943592T patent/ATE264024T1/de not_active IP Right Cessation
- 1999-08-19 CN CNB998123986A patent/CN1135704C/zh not_active Expired - Lifetime
- 1999-08-19 BR BR9913067-0A patent/BR9913067A/pt not_active IP Right Cessation
- 1999-08-19 KR KR1020017001867A patent/KR100733640B1/ko active IP Right Grant
- 1999-08-19 DE DE69916291T patent/DE69916291D1/de not_active Expired - Lifetime
-
2002
- 2002-05-17 HK HK02103756.6A patent/HK1041985B/zh not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1105971B1 (en) | 2004-04-07 |
| JP2002523957A (ja) | 2002-07-30 |
| WO2000011790A1 (en) | 2000-03-02 |
| EP1105971A1 (en) | 2001-06-13 |
| ATE264024T1 (de) | 2004-04-15 |
| KR20010099619A (ko) | 2001-11-09 |
| JP4361693B2 (ja) | 2009-11-11 |
| IL141380A0 (en) | 2002-03-10 |
| US6317070B1 (en) | 2001-11-13 |
| IL141380A (en) | 2004-12-15 |
| HK1041985B (zh) | 2004-10-08 |
| HK1041985A1 (en) | 2002-07-26 |
| AU756364B2 (en) | 2003-01-09 |
| CN1324516A (zh) | 2001-11-28 |
| AU5665999A (en) | 2000-03-14 |
| CN1135704C (zh) | 2004-01-21 |
| DE69916291D1 (de) | 2004-05-13 |
| EE04074B1 (et) | 2003-06-16 |
| EE200100100A (et) | 2002-06-17 |
| KR100733640B1 (ko) | 2007-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
| B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 12A ANUIDADE(S). |
|
| 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 2108 DE 31/05/2011. |