AR017522A1 - A DIGITAL TELEVISION SIGNAL RECEIVER (DTV) - Google Patents
A DIGITAL TELEVISION SIGNAL RECEIVER (DTV)Info
- Publication number
- AR017522A1 AR017522A1 ARP980105362A ARP980105362A AR017522A1 AR 017522 A1 AR017522 A1 AR 017522A1 AR P980105362 A ARP980105362 A AR P980105362A AR P980105362 A ARP980105362 A AR P980105362A AR 017522 A1 AR017522 A1 AR 017522A1
- Authority
- AR
- Argentina
- Prior art keywords
- signal
- qam
- vsb
- dtv
- final
- Prior art date
Links
- 230000001105 regulatory effect Effects 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]
- H04N21/40—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
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/373—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35 with erasure correction and erasure determination, e.g. for packet loss recovery or setting of erasures for the decoding of Reed-Solomon codes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6502—Reduction of hardware complexity or efficient processing
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
Un radioreceptor que utiliza el mismo sintonizador para recibir una senal de television digital (DTV) seleccionada, independientemente de que se trate unasenal de amplitud modulada en cuadratura (QAM) o de banda lateral residual (VSB); la senal IF final se digitaliza a una velocidad que es un multiplo de lasfrecuencias de símbolos tanto de la senal de QAM, como de la senal VSB para sincronizar respecto de la banda base. Las frecuencias portadoras IF finales QAM yVSB se regulan para que sean submultiplos del multiplo de ambas frecuencias de símbolos de las senales QAM y VSB, aplicando las senales de control automáticode frecuencia y fase (AFPC) desarrolladas en los circuitos digitalesde un oscilador local del sintonizador. Las senales de DTVde banda base obtenidas mediantela sincronizacion de las senales IF finales tienen una velocidad de muestras superior a la velocidad de símbolos para facilitar la sintonizacion de lossímbolos. Las senales de DTV de banda base correspondientes a la velocidad de símbolos se convierten a decimal antes de realizarse la ecualizacion de canales,a fin de reducir la cantidad de multiplicadores requeridos en el filtro de ecualizacion de canales.A radio receiver that uses the same tuner to receive a selected digital television (DTV) signal, regardless of whether it is a quadrature modulated amplitude (QAM) or residual sideband (VSB) signal; The final IF signal is digitized at a rate that is a multiple of the symbol frequencies of both the QAM signal and the VSB signal to synchronize with respect to the baseband. The final IF carrier frequencies QAM and VSB are regulated to be submultiples of the multiple of both frequencies of the QAM and VSB signal symbols, applying the automatic frequency and phase control (AFPC) signals developed in the digital circuits of a local oscillator of the tuner. The baseband DTV signals obtained by synchronizing the final IF signals have a sample rate greater than the symbol rate to facilitate the tuning of the symbols. The baseband DTV signals corresponding to the symbol rate are converted to decimal before the channel equalization is performed, in order to reduce the amount of multipliers required in the channel equalization filter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/021,946 US5966188A (en) | 1996-12-26 | 1998-02-11 | Decimation of baseband DTV signals prior to channel equalization in digital television signal receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AR017522A1 true AR017522A1 (en) | 2001-09-12 |
Family
ID=21807004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP980105362A AR017522A1 (en) | 1998-02-11 | 1998-10-27 | A DIGITAL TELEVISION SIGNAL RECEIVER (DTV) |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPH11284932A (en) |
| KR (1) | KR100276772B1 (en) |
| CN (1) | CN1226117A (en) |
| AR (1) | AR017522A1 (en) |
| AU (1) | AU720014B2 (en) |
| BR (1) | BR9803857A (en) |
| CA (1) | CA2249035A1 (en) |
| SG (1) | SG85096A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06508805A (en) * | 1991-08-05 | 1994-10-06 | ザ、ブロクター、エンド、ギャンブル、カンパニー | plug-in handle |
| KR100353861B1 (en) * | 1999-11-11 | 2002-09-26 | 한국전자통신연구원 | DTV Tuner Apparatus And Method For Broadband Auto Frequency Channel Selection Using Approximated Frequency Mapping Function |
| KR101006851B1 (en) * | 2003-01-28 | 2011-01-12 | 톰슨 라이센싱 | Robust mode staggercasting |
| US7502411B2 (en) * | 2004-03-05 | 2009-03-10 | Silicon Image, Inc. | Method and circuit for adaptive equalization of multiple signals in response to a control signal generated from one of the equalized signals |
| DE102004054893A1 (en) * | 2004-11-12 | 2006-05-24 | Micronas Gmbh | Method and circuit arrangement for channel filtering analog or digitally modulated TV signals |
| JP4674103B2 (en) * | 2005-03-15 | 2011-04-20 | 富士通セミコンダクター株式会社 | Reception apparatus and received signal processing method |
| CN104284058A (en) * | 2013-07-09 | 2015-01-14 | 晨星半导体股份有限公司 | Filtering system and method and television signal receiving device and method |
| US11885874B2 (en) * | 2018-12-19 | 2024-01-30 | Semiconductor Components Industries, Llc | Acoustic distance measuring circuit and method for low frequency modulated (LFM) chirp signals |
| KR102713427B1 (en) * | 2019-09-23 | 2024-10-04 | 에스케이하이닉스 주식회사 | Semiconductor device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5648987A (en) * | 1994-03-24 | 1997-07-15 | Samsung Electronics Co., Ltd. | Rapid-update adaptive channel-equalization filtering for digital radio receivers, such as HDTV receivers |
| US5715012A (en) * | 1996-03-13 | 1998-02-03 | Samsung Electronics Co., Ltd. | Radio receivers for receiving both VSB and QAM digital HDTV signals |
| KR960020485A (en) * | 1994-11-14 | 1996-06-17 | 이헌조 | HTV receiver |
| US5852477A (en) * | 1997-06-25 | 1998-12-22 | Samsung Electronics Co., Ltd. | Digital TV receivers with poly-phase analog-to-digital conversion of baseband symbol coding |
-
1998
- 1998-09-04 SG SG9803424A patent/SG85096A1/en unknown
- 1998-09-26 KR KR1019980040162A patent/KR100276772B1/en not_active IP Right Cessation
- 1998-09-29 CN CN98120772A patent/CN1226117A/en active Pending
- 1998-09-29 CA CA002249035A patent/CA2249035A1/en not_active Abandoned
- 1998-09-30 BR BR9803857-5A patent/BR9803857A/en not_active IP Right Cessation
- 1998-09-30 JP JP10278812A patent/JPH11284932A/en active Pending
- 1998-09-30 AU AU87121/98A patent/AU720014B2/en not_active Ceased
- 1998-10-27 AR ARP980105362A patent/AR017522A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU8712198A (en) | 1999-08-26 |
| BR9803857A (en) | 1999-12-14 |
| KR100276772B1 (en) | 2001-01-15 |
| KR19990071401A (en) | 1999-09-27 |
| CN1226117A (en) | 1999-08-18 |
| SG85096A1 (en) | 2001-12-19 |
| JPH11284932A (en) | 1999-10-15 |
| AU720014B2 (en) | 2000-05-18 |
| CA2249035A1 (en) | 1999-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2218643T3 (en) | DIGITAL DEMODULATOR AND CORRESPONDING METHOD. | |
| US4941150A (en) | Spread spectrum communication system | |
| JP2621657B2 (en) | Dual mode automatic frequency control | |
| EP0526836A2 (en) | QPSK demodulator with automatic frequency control | |
| US20110069740A1 (en) | Methods and systems to digitally switch between frequencies and corresponding bandwidths in a transceiver | |
| AR017522A1 (en) | A DIGITAL TELEVISION SIGNAL RECEIVER (DTV) | |
| CN1972391A (en) | Grounding mobile multimedia broadcasting receiver compatible with digital audio broadcasting | |
| KR100285435B1 (en) | Television receiver with separate i-f amplifiers for vsb and qam digital tv signals that are digitally synchrodyned | |
| US6687313B1 (en) | Digital television receiver converting vestigial-sideband signals to double-sideband AM signals before demodulation | |
| EP0595827B1 (en) | Clock signal generator for a digital television receiver | |
| EP0523778A1 (en) | Direct conversion receiver | |
| KR20000070321A (en) | Demodulation unit and method of demodulating a quadrature signal | |
| JP2000092142A (en) | Data transmission system | |
| US4941050A (en) | An afc arrangement for tuning a television receiving apparatus to a select transmission having an actual carrier frequency which differs from a nominal carrrier frequency | |
| GB1579985A (en) | Radio broadcasting system with code signaling | |
| CA2284948A1 (en) | Complex phase-locked loop demodulator for low-if and zero-if radio receivers | |
| KR100463502B1 (en) | HD Digital's Digital Demodulator | |
| Syrjala et al. | Sampling jitter estimation and mitigation in direct RF sub-sampling receiver architecture | |
| JP2001156594A (en) | Frequency modulated receiver used especially in rds | |
| JPH0779390A (en) | Receiver | |
| Robert | Amplitude Modulation | |
| KR930001829B1 (en) | Circuit for removing noise | |
| JPS61139105A (en) | Am-fm demodulating circuit | |
| JPS6284632A (en) | Signal multiplexer | |
| JPS6089155A (en) | Phase locked loop system |