BR9904769A - Processo de operação de um sistema de sinal digital, e, sistema para fornecimento de um sinal de banda base digital - Google Patents
Processo de operação de um sistema de sinal digital, e, sistema para fornecimento de um sinal de banda base digitalInfo
- Publication number
- BR9904769A BR9904769A BR9904769-1A BR9904769A BR9904769A BR 9904769 A BR9904769 A BR 9904769A BR 9904769 A BR9904769 A BR 9904769A BR 9904769 A BR9904769 A BR 9904769A
- Authority
- BR
- Brazil
- Prior art keywords
- signal
- digital
- television receiver
- degradations
- providing
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 230000015556 catabolic process Effects 0.000 abstract 2
- 238000006731 degradation reaction Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000004891 communication Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
- H04N5/40—Modulation circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Picture Signal Circuits (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
''PROCESSO DE OPERAçãO DE UM SISTEMA DE SINAL DIGITAL, E, SISTEMA PARA FORNECIMENTO DE UM SINAL DE BANDA BASE DIGITAL''. Um codificador - modular para acoplar um sinal de televisão de banda base digital a um receptor de televisão digital VSB que inclui filtros, circuito de equalização e circuito de correção de erro dianteiro para corrigir degradações de sinal que estão abaixo de um lado limiar. O codificador - modulador processa o sinal de banda base para uma transmissão de baixa potência em um canal RF com características de banda passante menos do que o nominal. Um cabo coaxial ou outra ligação de comunicação de baixo ruído diretamente conecta o sinal de RF do receptor de televisão. Quaisquer erros ou degradações de sinal no sinal transmitido que estão abaixo do predeterminado limiar são corrigidos pelos filtros e circuito de equalização construídos no receptor de televisão digital VSB.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2027498A | 1998-02-06 | 1998-02-06 | |
PCT/US1999/000130 WO1999040721A1 (en) | 1998-02-06 | 1999-01-06 | Vsb encoder and rf modulator for digital television receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9904769A true BR9904769A (pt) | 2000-03-08 |
Family
ID=21797699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9904769-1A BR9904769A (pt) | 1998-02-06 | 1999-01-06 | Processo de operação de um sistema de sinal digital, e, sistema para fornecimento de um sinal de banda base digital |
Country Status (12)
Country | Link |
---|---|
US (1) | US6559898B1 (pt) |
JP (1) | JP2001519993A (pt) |
KR (1) | KR100470737B1 (pt) |
CN (1) | CN1148958C (pt) |
AR (1) | AR014501A1 (pt) |
AU (1) | AU2026499A (pt) |
BR (1) | BR9904769A (pt) |
CA (1) | CA2280161C (pt) |
HK (1) | HK1027701A1 (pt) |
ID (1) | ID22693A (pt) |
TW (1) | TW416219B (pt) |
WO (1) | WO1999040721A1 (pt) |
Families Citing this family (22)
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US7106388B2 (en) * | 1999-12-15 | 2006-09-12 | Broadcom Corporation | Digital IF demodulator for video applications |
KR100386572B1 (ko) * | 1999-12-24 | 2003-06-02 | 엘지전자 주식회사 | 디지털 티브이 중계 시스템 |
JP4517436B2 (ja) * | 2000-02-09 | 2010-08-04 | ソニー株式会社 | 受信システム、受信装置、及び受信システムの制御方法 |
TW501371B (en) * | 2000-03-03 | 2002-09-01 | Sony Computer Entertainment Inc | Signal converter |
US6724439B1 (en) | 2000-08-04 | 2004-04-20 | Zenith Electronics Corporation | Low cost VSB encoder and RF modulator for supplying a substantially 6 MHZ VSB signal to digital television receiver |
KR100424496B1 (ko) * | 2000-08-31 | 2004-03-26 | 삼성전자주식회사 | 디지털 vsb시스템의 동기신호를 이용한 이퀄라이져 제어 방법 및 장치 |
US7352411B2 (en) * | 2000-12-15 | 2008-04-01 | Broadcom Corporation | Digital IF demodulator |
US6919930B2 (en) * | 2001-04-06 | 2005-07-19 | Zenith Electronics Corporation | Digital television signal translator |
DE10163798A1 (de) * | 2001-12-22 | 2003-07-03 | Philips Intellectual Property | Fernsehsignal-Empfänger mit universalem Ausgang für verschiedenartige Oberflächenwellenfilter |
US7847864B1 (en) * | 2002-03-01 | 2010-12-07 | Broadcom Corporation | All digital radio frequency modulator |
US7489362B2 (en) | 2003-03-04 | 2009-02-10 | Broadcom Corporation | Television functionality on a chip |
KR100561472B1 (ko) * | 2003-10-21 | 2006-03-16 | 삼성전자주식회사 | 다중 신호를 포괄하여 송수신하는 장치 및 방법 |
US20070076819A1 (en) * | 2005-09-30 | 2007-04-05 | Axcera, Llc | 8VSB bandwidth-limited peak filter |
GB0614543D0 (en) * | 2006-07-21 | 2006-08-30 | Vodafone Plc | RF Distribution |
US8139957B2 (en) * | 2008-06-24 | 2012-03-20 | General Instrument Corporation | High sensitivity optical receiver employing a high gain amplifier and an equalizing circuit |
US10171200B2 (en) * | 2013-08-27 | 2019-01-01 | Zte Corporation | Optical communication using super-nyquist signals |
KR102118976B1 (ko) | 2018-08-24 | 2020-06-04 | 주식회사 비즈닉스 | 콘택트렌즈 진열장치 및 이를 이용한 콘택트렌즈 전시방법 |
KR20200074041A (ko) | 2018-12-14 | 2020-06-24 | 장세진 | 콘택트렌즈 진열장치 및 이를 이용한 콘택트렌즈 진열장치 제어방법 |
KR20200074042A (ko) | 2018-12-14 | 2020-06-24 | 장세진 | 콘택트렌즈 진열 시스템 및 이를 이용한 콘택트렌즈 진열 시스템 제어방법 |
KR20220015200A (ko) | 2020-07-30 | 2022-02-08 | 주식회사 비즈닉스 | 콘택트렌즈 버츄얼 피팅 시스템 및 이를 이용한 콘택트렌즈 버츄얼 피팅 방법 |
KR20220015202A (ko) | 2020-07-30 | 2022-02-08 | 주식회사 비즈닉스 | 렌즈 큐브, 콘택트렌즈 버츄얼 피팅 시스템 및 이를 이용한 콘택트렌즈 버츄얼 피팅 방법 |
KR20220015201A (ko) | 2020-07-30 | 2022-02-08 | 주식회사 비즈닉스 | 콘택트렌즈 전시 스탠드, 콘택트렌즈 버츄얼 피팅 시스템 및 이를 이용한 콘택트렌즈 버츄얼 피팅 방법 |
Family Cites Families (32)
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JPS60220683A (ja) | 1984-04-17 | 1985-11-05 | Murata Mfg Co Ltd | Vtrのrfモジユレ−タ |
US5270816A (en) | 1988-04-04 | 1993-12-14 | Zenith Electronics Corporation | TV signal transmission systems and methods |
US5040063A (en) | 1988-04-04 | 1991-08-13 | Zenith Electronics Corporation | TV signal transmission systems and methods |
US4958230A (en) | 1989-08-11 | 1990-09-18 | General Electric Company | Method of transmitting auxiliary information in a television signal |
US5029003A (en) | 1989-12-18 | 1991-07-02 | General Electric Company | Apparatus for incorporating digital signals with a standard TV signal |
US5086340A (en) | 1990-10-19 | 1992-02-04 | Zenith Electronics Corporation | Co-channel interference reduction system for digital high definition television |
US5087975A (en) | 1990-11-09 | 1992-02-11 | Zenith Electronics Corporation | VSB HDTV transmission system with reduced NTSC co-channel interference |
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US5283653A (en) | 1992-05-22 | 1994-02-01 | Zenith Electronics Corp. | Dual HDTV/NTSC receiver using sequentially synthesized HDTV and NTSC co-channel carrier frequencies |
KR0183143B1 (ko) * | 1993-02-17 | 1999-05-15 | 안쏘니 제이. 살리, 쥬니어 | 다중-변조 통신 시스템 |
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US5686966A (en) * | 1994-04-06 | 1997-11-11 | De La Cierva, Sr.; Juan | Digital data transmission system for transmitting digital data in a predetermined bandwidth without distortion |
US5636252A (en) * | 1994-05-04 | 1997-06-03 | Samsung Electronics Co., Ltd. | Automatic gain control of radio receiver for receiving digital high-definition television signals |
US5572249A (en) * | 1994-07-07 | 1996-11-05 | Philips Electronics North America Corporation | Method and apparatus for optimal NTSC rejection filtering and transmitter and receiver comprising same |
US5583889A (en) | 1994-07-08 | 1996-12-10 | Zenith Electronics Corporation | Trellis coded modulation system for HDTV |
US5559561A (en) * | 1994-07-15 | 1996-09-24 | Lucent Technologies Inc. | Coded modulation with shaping gain and tomlinson precoding |
US5602583A (en) | 1995-02-10 | 1997-02-11 | Zenith Electronics Corporation | NTSC rejection filter with switched tomlinson precoder for reducing NTSC co-channel interference in ATV receivers |
IT1276019B1 (it) | 1995-03-10 | 1997-10-24 | M B International S R L | Procedimento per la generazione di un segnale televisivo modulato |
IT1276020B1 (it) | 1995-03-10 | 1997-10-24 | M B International S R L | Procedimento e dispositivo per la generazione di un segnale televisivo modulato |
US5648822A (en) * | 1995-05-19 | 1997-07-15 | Philips Electronics North America Corporation | Method and apparatus for combating co-channel NTSC interference using a variable-comb filter for digital TV transmission |
US5574496A (en) | 1995-06-07 | 1996-11-12 | Zenith Electronics Corporation | Techniques for minimizing co-channel interference in a received ATV signal |
US5821988A (en) | 1995-08-29 | 1998-10-13 | Zenith Electronics Corporation | NTSC co-channel interference reduction system |
JP3517056B2 (ja) * | 1996-04-24 | 2004-04-05 | パイオニア株式会社 | Vsb変調信号におけるサンプリングタイミング位相誤差検出器 |
CA2220740C (en) | 1996-11-12 | 2002-03-19 | Samsung Electronics Co., Ltd. | Symbol decoding apparatus with plural data slicers and an adaptive ntsc co-channel interference filter |
US5748226A (en) | 1996-11-12 | 1998-05-05 | Samsung Electronics Co., Ltd. | Digital television receiver with adaptive filter circuitry for suppressing NTSC co-channel interference |
JPH10224150A (ja) * | 1997-02-05 | 1998-08-21 | Matsushita Electric Ind Co Ltd | 映像信号送出装置 |
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-
1999
- 1999-01-06 ID IDW990782A patent/ID22693A/id unknown
- 1999-01-06 CN CNB998000264A patent/CN1148958C/zh not_active Expired - Lifetime
- 1999-01-06 WO PCT/US1999/000130 patent/WO1999040721A1/en active IP Right Grant
- 1999-01-06 AU AU20264/99A patent/AU2026499A/en not_active Abandoned
- 1999-01-06 JP JP54043399A patent/JP2001519993A/ja active Pending
- 1999-01-06 BR BR9904769-1A patent/BR9904769A/pt not_active IP Right Cessation
- 1999-01-06 CA CA002280161A patent/CA2280161C/en not_active Expired - Lifetime
- 1999-01-06 KR KR10-1999-7008814A patent/KR100470737B1/ko not_active IP Right Cessation
- 1999-01-20 TW TW088100828A patent/TW416219B/zh not_active IP Right Cessation
- 1999-01-27 AR ARP990100327A patent/AR014501A1/es active IP Right Grant
- 1999-04-27 US US09/300,299 patent/US6559898B1/en not_active Expired - Lifetime
-
2000
- 2000-10-18 HK HK00106587A patent/HK1027701A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1148958C (zh) | 2004-05-05 |
CA2280161C (en) | 2004-10-19 |
TW416219B (en) | 2000-12-21 |
CA2280161A1 (en) | 1999-08-12 |
KR100470737B1 (ko) | 2005-03-07 |
CN1256044A (zh) | 2000-06-07 |
HK1027701A1 (en) | 2001-01-19 |
ID22693A (id) | 1999-12-09 |
KR20010005743A (ko) | 2001-01-15 |
AR014501A1 (es) | 2001-02-28 |
JP2001519993A (ja) | 2001-10-23 |
US6559898B1 (en) | 2003-05-06 |
WO1999040721A1 (en) | 1999-08-12 |
AU2026499A (en) | 1999-08-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application fees: application dismissed [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 12A ANUIDADE |
|
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 2082 DE 30/11/2010. |