BR9908637A - Sistema de modulação de sinal digital - Google Patents
Sistema de modulação de sinal digitalInfo
- Publication number
- BR9908637A BR9908637A BR9908637-9A BR9908637A BR9908637A BR 9908637 A BR9908637 A BR 9908637A BR 9908637 A BR9908637 A BR 9908637A BR 9908637 A BR9908637 A BR 9908637A
- Authority
- BR
- Brazil
- Prior art keywords
- bit
- encoded
- logic level
- input signal
- clock periods
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/02—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
- G11B20/1411—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol conversion to or from pulse width coding
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M5/00—Conversion of the form of the representation of individual digits
- H03M5/02—Conversion to or from representation by pulses
- H03M5/04—Conversion to or from representation by pulses the pulses having two levels
- H03M5/06—Code representation, e.g. transition, for a given bit cell depending only on the information in that bit cell
- H03M5/08—Code representation by pulse width
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M5/00—Conversion of the form of the representation of individual digits
- H03M5/02—Conversion to or from representation by pulses
- H03M5/04—Conversion to or from representation by pulses the pulses having two levels
- H03M5/06—Code representation, e.g. transition, for a given bit cell depending only on the information in that bit cell
- H03M5/12—Biphase level code, e.g. split phase code, Manchester code; Biphase space or mark code, e.g. double frequency code
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4902—Pulse width modulation; Pulse position modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
- H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
Abstract
"SISTEMA DE MODULAçãO DE SINAL DIGITAL" Trata-se de um sistema de codificação/decodificação de abertura variávle adequado para uso em um sistema de espectro de difusão que proporciona codificação de múltiplas fases de um fluxo de bits NRZ de entrada. Cada bit de um sinal de saída codificado é codificado para abranger um número diferente predeterminado de período de clock dependendo do nível lógico do sinal de entrada. Um bit codificado exibe um número de referência predeterminado de períodos de clock, por exemplo, 9, quando o sinal de entrada não exibe uma transição de nível lógico. Quando o sinal de entrada exibe uma alteração de fase de um nível lógico 0 para 1, a largura do bit de um bit codificado associado é aumentada por 1 período de clock. Quando o sinal de entrada exibe uma alteração de fase de nível lógico de 1 para 0, a largura do bit de um bit codificado associado é diminuída por 1 período de clock, para 8 períodos de clock. Portanto, o sinal de saída codificado pode conter três tipos de informações representadas por uma alteração na largura do bit proporcional a um fator N predeterminado.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7753798P | 1998-03-11 | 1998-03-11 | |
PCT/US1999/005301 WO1999046861A1 (en) | 1998-03-11 | 1999-03-11 | Digital signal modulation system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9908637A true BR9908637A (pt) | 2000-11-14 |
Family
ID=22138654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9908637-9A BR9908637A (pt) | 1998-03-11 | 1999-03-11 | Sistema de modulação de sinal digital |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP1062731B1 (pt) |
JP (1) | JP2002507075A (pt) |
KR (1) | KR100528891B1 (pt) |
CN (1) | CN1134894C (pt) |
AU (1) | AU769804B2 (pt) |
BR (1) | BR9908637A (pt) |
DE (1) | DE69902760T2 (pt) |
ES (1) | ES2181416T3 (pt) |
IL (1) | IL138030A (pt) |
TR (1) | TR200002599T2 (pt) |
WO (1) | WO1999046861A1 (pt) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1065853B1 (en) * | 1999-06-29 | 2009-02-11 | Sony Deutschland GmbH | Broadcast receiver for multi-transmission system |
US6792051B1 (en) | 2000-07-25 | 2004-09-14 | Thomson Licensing S.A. | In-band-on-channel broadcast system for digital data |
US6741646B1 (en) * | 2000-07-25 | 2004-05-25 | Thomson Licensing S.A. | Modulation technique for transmitting a high data rate signal, and an auxiliary data signal, through a band limited channel |
US6862317B1 (en) * | 2000-07-25 | 2005-03-01 | Thomson Licensing S.A. | Modulation technique providing high data rate through band limited channels |
US6359525B1 (en) * | 2000-07-25 | 2002-03-19 | Thomson Licensing S.A. | Modulation technique for transmitting multiple high data rate signals through a band limited channel |
DE50206555D1 (de) * | 2002-02-06 | 2006-06-01 | Abb Schweiz Ag | Verfahren zum Erzeugen und Einrichtung zum Empfangen eines anisochronen binären Signals |
US7042959B2 (en) * | 2002-02-20 | 2006-05-09 | Thomson Licensing | DSP-based variable aperture code generation technique |
AU2003282972A1 (en) * | 2002-10-21 | 2004-05-13 | Atlinks Usa, Inc. | Two-dimentional coding for high-density storage media applicatio ns |
CN1714391B (zh) * | 2002-11-20 | 2010-10-13 | 汤姆森特许公司 | 高密存储媒体应用的多维编码 |
CN1698330B (zh) * | 2003-01-15 | 2010-04-28 | 日本电信电话株式会社 | 非接触rf id系统的通信方法,非接触rf id系统,发报机以及接收机 |
US7242729B1 (en) | 2004-04-26 | 2007-07-10 | Dgi Creations, Llc | Signal decoding method and apparatus |
US7609784B1 (en) | 2004-04-26 | 2009-10-27 | Dgi Creations, Llc | Signal decoding method and apparatus with dynamic noise threshold |
US7453967B2 (en) * | 2004-05-05 | 2008-11-18 | Cisco Technology, Inc. | Serial self-adaptable transmission line |
US20070025475A1 (en) * | 2005-07-28 | 2007-02-01 | Symbol Technologies, Inc. | Method and apparatus for data signal processing in wireless RFID systems |
US8411788B2 (en) * | 2005-11-18 | 2013-04-02 | Qualcomm, Incorporated | Digital transmitters for wireless communication |
EP1933494B1 (en) * | 2006-12-11 | 2010-04-07 | WAGO Kontakttechnik GmbH (nach Schweizer Recht) & Co. KG | Data processing unit and method for synchronising communication of a plurality of data processing units |
CN102522998A (zh) * | 2011-11-12 | 2012-06-27 | 广州中大微电子有限公司 | 一种适用于nrz编码信号的typeb全速率解码电路 |
CN105530018B (zh) * | 2016-01-22 | 2017-06-20 | 建荣集成电路科技(珠海)有限公司 | 数字调频接收机的门限扩展系统及方法 |
KR20170133862A (ko) * | 2016-05-27 | 2017-12-06 | 주식회사 지엠케이 | 전력선 통신 시스템 |
KR20170133861A (ko) * | 2016-05-27 | 2017-12-06 | 주식회사 지엠케이 | 전력선 통신 시스템 |
KR20170133858A (ko) * | 2016-05-27 | 2017-12-06 | 주식회사 지엠케이 | 전력선 통신 시스템 |
CN108233940B (zh) * | 2018-01-12 | 2021-06-15 | 南京中科微电子有限公司 | 一种基于iso14443a协议的米勒编码电路 |
GB2619963A (en) * | 2022-06-24 | 2023-12-27 | Data Conv Systems Ltd | A transmitter and a receiver |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4462051A (en) * | 1982-04-02 | 1984-07-24 | Ampex Corporation | Demodulator for an asynchronous binary signal |
US5185765A (en) * | 1986-05-08 | 1993-02-09 | Walker Harold R | High speed data communication system using phase shift key coding |
JPS62279562A (ja) * | 1986-05-28 | 1987-12-04 | Victor Co Of Japan Ltd | デ−タ抜取り方法及びデ−タ抜取り装置 |
US4951049A (en) * | 1989-03-22 | 1990-08-21 | Eastman Kodak Company | Self clocking binary information encoder |
US5025328A (en) * | 1989-03-22 | 1991-06-18 | Eastman Kodak Company | Circuit for decoding binary information |
-
1999
- 1999-03-11 TR TR2000/02599T patent/TR200002599T2/xx unknown
- 1999-03-11 KR KR10-2000-7009781A patent/KR100528891B1/ko not_active IP Right Cessation
- 1999-03-11 AU AU34504/99A patent/AU769804B2/en not_active Ceased
- 1999-03-11 IL IL13803099A patent/IL138030A/en not_active IP Right Cessation
- 1999-03-11 WO PCT/US1999/005301 patent/WO1999046861A1/en active IP Right Grant
- 1999-03-11 JP JP2000536138A patent/JP2002507075A/ja active Pending
- 1999-03-11 CN CNB998038563A patent/CN1134894C/zh not_active Expired - Fee Related
- 1999-03-11 ES ES99916126T patent/ES2181416T3/es not_active Expired - Lifetime
- 1999-03-11 DE DE69902760T patent/DE69902760T2/de not_active Expired - Lifetime
- 1999-03-11 EP EP99916126A patent/EP1062731B1/en not_active Expired - Lifetime
- 1999-03-11 BR BR9908637-9A patent/BR9908637A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR20010041589A (ko) | 2001-05-25 |
WO1999046861A1 (en) | 1999-09-16 |
AU769804B2 (en) | 2004-02-05 |
TR200002599T2 (tr) | 2000-11-21 |
CN1292949A (zh) | 2001-04-25 |
IL138030A0 (en) | 2001-10-31 |
CN1134894C (zh) | 2004-01-14 |
EP1062731B1 (en) | 2002-09-04 |
ES2181416T3 (es) | 2003-02-16 |
KR100528891B1 (ko) | 2005-11-16 |
DE69902760T2 (de) | 2003-06-05 |
AU3450499A (en) | 1999-09-27 |
JP2002507075A (ja) | 2002-03-05 |
EP1062731A1 (en) | 2000-12-27 |
DE69902760D1 (de) | 2002-10-10 |
IL138030A (en) | 2004-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 11A 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 2069 DE 31/08/2010. |