BR0003751A - Modulador digital de vsb - Google Patents

Modulador digital de vsb

Info

Publication number
BR0003751A
BR0003751A BR0003751-6A BR0003751A BR0003751A BR 0003751 A BR0003751 A BR 0003751A BR 0003751 A BR0003751 A BR 0003751A BR 0003751 A BR0003751 A BR 0003751A
Authority
BR
Brazil
Prior art keywords
mhz
stream
digital
channel
sampling
Prior art date
Application number
BR0003751-6A
Other languages
English (en)
Other versions
BRPI0003751B1 (pt
Inventor
David Lowell Mcneely
Original Assignee
Thomson Licensing Sa
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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of BR0003751A publication Critical patent/BR0003751A/pt
Publication of BRPI0003751B1 publication Critical patent/BRPI0003751B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplitude Modulation (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

"MODULADOR DIGITAL DE VSB" Um método e aparelho digital modula um fluxo de amostras digitalizadas de uma fonte, (202) por uma representação digital de uma portadora (804) para produzir, por exemplo, um sinal de televisão de largura de banda de 6 MHz seletivamente centralizado em 63 MHz (Canal 3), 69 MHz (Canal 4) ou 5,38 MHz IF (banda base). Mais particularmente, o método inclui primeiro re-amostrar (800) o fluxo de amostras digitalizadas e depois modular (802) o fluxo re-amostrado de amostras com uma seq³ência curta repetida de valores complexos (804), cujos valores complexos representam uma portadora exponencial digitalizada.
BRPI0003751-6A 1999-08-24 2000-08-22 Modulador digital complexo para geração de uma portadora modulada por um sinal digital e método de geração de uma portadora complexa modulada com um sinal complexo BRPI0003751B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/382,231 US6466277B1 (en) 1999-08-24 1999-08-24 VSB digital modulator

Publications (2)

Publication Number Publication Date
BR0003751A true BR0003751A (pt) 2001-04-03
BRPI0003751B1 BRPI0003751B1 (pt) 2015-08-11

Family

ID=23508059

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0003751-6A BRPI0003751B1 (pt) 1999-08-24 2000-08-22 Modulador digital complexo para geração de uma portadora modulada por um sinal digital e método de geração de uma portadora complexa modulada com um sinal complexo

Country Status (10)

Country Link
US (1) US6466277B1 (pt)
EP (1) EP1079574B1 (pt)
JP (1) JP4562105B2 (pt)
KR (1) KR100650129B1 (pt)
CN (2) CN1708038B (pt)
BR (1) BRPI0003751B1 (pt)
DE (1) DE60032075T2 (pt)
MX (1) MXPA00008270A (pt)
MY (1) MY120854A (pt)
TW (1) TW516293B (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6944217B1 (en) * 2000-02-01 2005-09-13 International Business Machines Corporation Interleaved finite impulse response filter
IT1316852B1 (it) * 2000-03-24 2003-05-12 M B Internat S R L Procedimento per convertire un segnale reale in un segnale complessointrinsecamente in quadratura
US6704438B1 (en) * 2000-05-08 2004-03-09 Aloka Co., Ltd. Apparatus and method for improving the signal to noise ratio on ultrasound images using coded waveforms
US7847864B1 (en) * 2002-03-01 2010-12-07 Broadcom Corporation All digital radio frequency modulator
US8184210B2 (en) * 2006-08-22 2012-05-22 STMicroelectronics International Digital Radio Frequency (RF) Modulator
US7990990B2 (en) * 2007-12-11 2011-08-02 Macronix International Co., Ltd. Circuit and method for transmitting data stream
DE102013201253A1 (de) * 2013-01-26 2014-07-31 Lenze Automation Gmbh Verfahren und Vorrichtung zum Erzeugen eines digitalen Signals
US11507064B2 (en) * 2016-05-09 2022-11-22 Strong Force Iot Portfolio 2016, Llc Methods and systems for industrial internet of things data collection in downstream oil and gas environment
DE202016102989U1 (de) 2016-06-06 2016-06-15 E-Lead Electronic Co., Ltd. Oben befestigte Reflexionsplatte
DE202016103985U1 (de) 2016-07-21 2016-08-03 E-Lead Electronic Co., Ltd. Abnehmbares Head-Up-Anzeigegerät mit Reflexionsfolie

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630285A (en) * 1985-03-18 1986-12-16 The United States Of America As Represented By The Director Of The National Security Agency Method for reducing group delay distortion
US5715012A (en) * 1996-03-13 1998-02-03 Samsung Electronics Co., Ltd. Radio receivers for receiving both VSB and QAM digital HDTV signals
US5959699A (en) * 1994-06-28 1999-09-28 Samsung Electronics Co., Ltd. Reception mode control in radio receivers for receiving both VSB and QAM digital television signals
JPH099325A (ja) * 1995-06-15 1997-01-10 Sharp Corp パーソナルハンディフォンシステムの端末
US5694419A (en) * 1995-11-07 1997-12-02 Hitachi America, Ltd. Shared resource modulator-demodulator circuits for use with vestigial sideband signals
US5692013A (en) * 1995-11-07 1997-11-25 Hitachi America, Ltd. Shared resources modulator-demodulator circuits for use with quadrature amplitude modulated signals
US5764701A (en) 1996-03-04 1998-06-09 Zenith Electronics Corporation VSB modulator
US6112086A (en) * 1997-02-25 2000-08-29 Adc Telecommunications, Inc. Scanning RSSI receiver system using inverse fast fourier transforms for a cellular communications system with centralized base stations and distributed antenna units
JPH11150581A (ja) * 1997-11-14 1999-06-02 Nec Eng Ltd 擬似キャリア伝送装置
US5945885A (en) * 1998-03-05 1999-08-31 Hewlett-Packard Company Digital baseband modulator adaptable to different modulation types
US6313772B1 (en) * 1999-08-24 2001-11-06 Thomson Licensing S.A. Complex carrier signal generator for determining cyclic wave shape

Also Published As

Publication number Publication date
CN1285686A (zh) 2001-02-28
MY120854A (en) 2005-11-30
EP1079574A3 (en) 2004-01-07
DE60032075T2 (de) 2007-06-06
MXPA00008270A (es) 2002-07-22
BRPI0003751B1 (pt) 2015-08-11
EP1079574A2 (en) 2001-02-28
EP1079574A8 (en) 2001-05-02
EP1079574B1 (en) 2006-11-29
JP2001111638A (ja) 2001-04-20
CN1229950C (zh) 2005-11-30
CN1708038A (zh) 2005-12-14
US6466277B1 (en) 2002-10-15
KR20010021374A (ko) 2001-03-15
TW516293B (en) 2003-01-01
KR100650129B1 (ko) 2006-11-24
CN1708038B (zh) 2010-04-28
DE60032075D1 (de) 2007-01-11
JP4562105B2 (ja) 2010-10-13

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Legal Events

Date Code Title Description
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]
B07A Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 11/08/2015, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time
B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2476 DE 19-06-2018 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.