MX9603333A - Sistema de modulacion codificada trellis para television de alta definicion (hdtv). - Google Patents

Sistema de modulacion codificada trellis para television de alta definicion (hdtv).

Info

Publication number
MX9603333A
MX9603333A MX9603333A MX9603333A MX9603333A MX 9603333 A MX9603333 A MX 9603333A MX 9603333 A MX9603333 A MX 9603333A MX 9603333 A MX9603333 A MX 9603333A MX 9603333 A MX9603333 A MX 9603333A
Authority
MX
Mexico
Prior art keywords
symbols
group
viterbi decoder
data bits
data
Prior art date
Application number
MX9603333A
Other languages
English (en)
Other versions
MXPA96003333A (es
Inventor
Richard W Citta
David A Willming
Original Assignee
Zenith Electronics Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23038750&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MX9603333(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Zenith Electronics Corp filed Critical Zenith Electronics Corp
Publication of MX9603333A publication Critical patent/MX9603333A/es
Publication of MXPA96003333A publication Critical patent/MXPA96003333A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof

Abstract

La presente invencion se refiere a un sistema de modulacion codificada trellis que comprende una fuente de símbolos de datos X1, X2, de 2 bitios, sucesivos, arreglados en un formato de cuadros en donde cada cuadro comprende una pluralidad de segmentos de datos cada uno de los cuales incluye una pluralidad de grupos de símbolos de datos intercalados. Cada grupo de símbolos de datos intercalados se codifica separadamente a través de un precodificador (32a) y un codificador de convolucion (32b) para derivar símbolos de salida codificados Z0, Z1, Z2, de los cuales se levanta o construye un mapa de símbolos respectivos de 8 niveles, para la transmision en forma conjunta con símbolos para la sincronizacion de segmentos y cuadros, generados periodicamente. La señal recibida se puede filtrar mediante un filtro lineal (42), por ejemplo un filtro de características en peine (42), para reducir la interferencia de canal comun y cada grupo de símbolos filtrados se aplica a un primer descodificador Viterbi (44) respectivo, para estimar datos de bitios X1, X2. Cada primer descodificador (44) comprende preferentemente un descodificador Viterbi de complejidad reducida (44) sensible a una representacion parcial del estado de filtro lineal (42). Cada grupo de símbolos recibidos puede aplicarse también directamente a un segundo descodificador Viterbi respectivo (46) para estimar los bitios de datos X1, X2. Los bitios de datos estimados X1, X2 del primer o segundo descodificadores (44 o 46) se seleccionan para el procesamiento adicional.
MXPA/A/1996/003333A 1994-07-08 1996-08-12 Sistema de modulacion codificada trellis paratelevision de alta definicion (hdtv) MXPA96003333A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/272,181 US5583889A (en) 1994-07-08 1994-07-08 Trellis coded modulation system for HDTV
US08272181 1994-07-08
PCT/US1995/008174 WO1996002100A1 (en) 1994-07-08 1995-06-29 Trellis coded modulation system for hdtv

Publications (2)

Publication Number Publication Date
MX9603333A true MX9603333A (es) 1997-12-31
MXPA96003333A MXPA96003333A (es) 1998-09-18

Family

ID=

Also Published As

Publication number Publication date
CA2181539A1 (en) 1996-01-25
KR100234865B1 (ko) 1999-12-15
JP3354938B2 (ja) 2002-12-09
US5600677A (en) 1997-02-04
US5583889A (en) 1996-12-10
CA2181539C (en) 2000-05-30
CN1141108A (zh) 1997-01-22
JPH10502776A (ja) 1998-03-10
BR9507201A (pt) 1997-09-16
WO1996002100A1 (en) 1996-01-25
US5636251A (en) 1997-06-03
CN1088301C (zh) 2002-07-24

Similar Documents

Publication Publication Date Title
CA2181539A1 (en) Trellis Coded Modulation System for HDTV
AU583844B2 (en) An apparatus for an efficient coding of television signals
US5023611A (en) Entropy encoder/decoder including a context extractor
KR100274288B1 (ko) 데이터 프레임 구성 방법 및 수신기
AU678871B2 (en) Method for communicating block coded digital data with associated synchronization/control data
MY127166A (en) Recursive metric for ntsc interference rejection in the atsc-hdtv trellis decoder
MX9500541A (es) Metodo y aparato para comunicar datos modulados de multinivel utilizando codificacion concatenada.
TW366669B (en) Picture encoding device and picture encoding method, picture decoding device and picture decoding method, and data recording media
DE69131438T2 (de) Adaptive Bewegungskompensation für das digitale Fernsehen
CA2394280A1 (en) Truncated metric for ntsc interference rejection in the atsc-hdtv trellis decoder
CA2016523A1 (en) Moving image signal encoding apparatus and decoding apparatus
EP0779747A3 (en) High efficiency coding recording and reproducing apparatus
CA2024135A1 (en) Conditional motion compensated interpolation of digital motion video
EP0801469A3 (en) Digital packet data trellis decoder
SE9303942D0 (sv) Feldetekteringssystem
EP0732856A3 (en) Hierarchical video encoder and decoder
CA2131242A1 (en) Apparatus for error-correct decoding in a digital data communications system
CA2186027A1 (en) Video signal coding
CA2275643A1 (en) Receiver decoder circuitry, and associated method, for decoding a channel encoded signal
EP0829875A4 (en) METHOD AND DEVICE FOR CODING AUDIO SIGNALS AND METHOD AND DEVICE FOR DECODING AUDIO SIGNALS
TW366657B (en) Decoder for a Trellis encoded signal corrupted by NTSC co-channel interference and white noise
CA2101832A1 (en) Method and apparatus for encoding and decoding digital image data
EP0891103A3 (en) Digital signal recording apparatus
CA2054849A1 (en) Speech parameter encoding method capable of transmitting a spectrum parameter at a reduced number of bits
JPS5625853A (en) Information transmission system