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1. WO1998014005 - MULTIPLE MODULATION FORMAT TELEVISION SIGNAL RECEIVER SYSTEM

Publication Number WO/1998/014005
Publication Date 02.04.1998
International Application No. PCT/US1997/017904
International Filing Date 25.09.1997
Chapter 2 Demand Filed 20.03.1998
IPC
H04L 27/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
H04N 5/21 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
14Picture signal circuitry for video frequency region
21Circuitry for suppressing or minimising disturbance, e.g. moire or halo
H04N 5/46 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
44Receiver circuitry
46for receiving on more than one standard at will
CPC
H04L 27/0008
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
0008arrangements for allowing a transmitter or receiver to use more than one type of modulation
H04N 5/211
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
14Picture signal circuitry for video frequency region
21Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
211Ghost signal cancellation
H04N 5/46
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
44Receiver circuitry ; for the reception of television signals according to analogue transmission standards;
46for receiving on more than one standard at will
Applicants
  • SARNOFF CORPORATION [US]/[US]
Inventors
  • STROLLE, Christopher, H.
  • JAFFE, Steven, Todd
Agents
  • SILVERIO, John, V.
Priority Data
08/721,86727.09.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTIPLE MODULATION FORMAT TELEVISION SIGNAL RECEIVER SYSTEM
(FR) SYSTEME DE RECEPTEUR DE SIGNAL DE TELEVISION A FORMATS DE MODULATION MULTIPLES
Abstract
(EN)
A television receiver for processing both analog and digital television signals. Specifically, the television receiver contains a RF/IF front end (202), an analog-to-digital converter that samples near baseband signals using a free running sampling rate, and a combined demodulator. The combined demodulator recovers both pilot and pix carriers as well as provides a passband adaptive equalizer (208) that removes ghosts from analog television signals and intersymbol interference from digital television signals.
(FR)
La présente invention concerne un récepteur de télévision traitant à la fois des signaux de télévision analogiques et des signaux de télévision numériques. Le récepteur de télévision comporte, en particulier, une entrée HF/FI (202), un numériseur échantillonnant des signaux quasiment de bande de base utilisant une fréquence d'échantillonnage librement déterminée et un démodulateur combiné. Le démodulateur combiné qui restitue à la fois la porteuse pilote et la porteuse de pixels constitue un égaliseur adaptatif (208) de bande passante éliminant les fantômes et des signaux de télévision analogiques et les interférences intersymboles des signaux de télévision numériques.
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