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1. WO2021060578 - IMAGE DISPLAY DEVICE, LIP-SYNC CORRECTION METHOD THEREOF, AND IMAGE DISPLAY SYSTEM

Publication Number WO/2021/060578
Publication Date 01.04.2021
International Application No. PCT/KR2019/012455
International Filing Date 25.09.2019
IPC
H04N 21/43 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
40Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB ; Operations thereof
43Processing 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 synchronizing decoder's clock; Client middleware
H04N 21/8547 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
85Assembly of content; Generation of multimedia applications
854Content authoring
8547involving timestamps for synchronizing content
H04N 21/422 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
40Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB ; Operations thereof
41Structure of client; Structure of client peripherals
422Input-only peripherals, e.g. global positioning system
CPC
H04N 21/422
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
41Structure of client; Structure of client peripherals
422Input-only peripherals ; , i.e. input devices connected to specially adapted client devices; , e.g. global positioning system [GPS]
H04N 21/43
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing 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
H04N 21/8547
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
80Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
85Assembly of content; Generation of multimedia applications
854Content authoring
8547involving timestamps for synchronizing content
Applicants
  • 엘지전자 주식회사 LG ELECTRONICS INC. [KR]/[KR]
Inventors
  • 송인선 SONG, In Sun
  • 권영도 KWON, Young Do
Agents
  • 특허법인 남촌 NAMCHON PATENT AND LAW FIRM
Priority Data
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) IMAGE DISPLAY DEVICE, LIP-SYNC CORRECTION METHOD THEREOF, AND IMAGE DISPLAY SYSTEM
(FR) DISPOSITIF D'AFFICHAGE D'IMAGE, PROCÉDÉ DE CORRECTION DE SYNCHRONISATION LABIALE ASSOCIÉ, ET SYSTÈME D'AFFICHAGE D'IMAGE
(KO) 영상표시장치, 이의 립싱크 보정방법 및 영상표시시스템
Abstract
(EN)
The present invention relates to an image display device, a lip-sync correction method thereof, and an image display system. The lip-sync correction method of an image display device, according to one embodiment of the present invention, comprises the steps of: receiving an input of an audio delay measurement command from a user; transmitting an audio detection command to a remote control device and outputting a prestored test signal to an external speaker; comparing an audio signal, received from the remote control device, with the test signal and calculating an audio delay value; and correcting a decoding timestamp of an image signal on the basis of the audio delay value. Accordingly, audio and video can be synchronized in accordance with various external audio outputs or external audio devices.
(FR)
La présente invention concerne un dispositif d'affichage d'image, un procédé de correction de synchronisation labiale associé et un système d'affichage d'image. Le procédé de correction de synchronisation labiale d'un dispositif d'affichage d'image, selon un mode de réalisation de la présente invention, comprend les étapes de : réception d'une entrée d'une instruction de mesure de retard audio provenant d'un utilisateur ; transmission d'une instruction de détection audio à un dispositif de commande à distance et fourniture en sortie d'un signal de test pré-stocké vers un haut-parleur externe ; comparaison d'un signal audio, reçu à partir du dispositif de commande à distance, au signal de test et calcul d'une valeur de retard audio ; et correction d'une estampille temporelle de décodage d'un signal d'image sur la base de la valeur de retard audio. Par conséquent, l'audio et la vidéo peuvent être synchronisés en fonction de diverses sorties audio externes ou de divers dispositifs audio externes.
(KO)
본 발명은 영상표시장치, 이의 립싱크 보정방법 및 영상표시시스템에 관한 것으로, 본 발명의 일 실시예에 따른 영상표시장치의 립싱크 보정방법은, 사용자로부터 오디오 딜레이 측정명령을 입력받는 단계; 원격제어장치에 오디오 검출명령을 전송하고, 기 저장된 테스트 신호를 외부 스피커로 출력하는 단계; 상기 원격제어장치로부터 수신되는 오디오 신호를 상기 테스트 신호와 비교하여 오디오 딜레이 값을 산출하는 단계; 및 상기 오디오 딜레이 값에 기초하여 영상신호의 디코딩 타임 스탬프를 보정하는 단계를 포함한다. 이에 의해, 다양한 외부 오디오 출력이나 외부 오디오 기기에 대응하여 비디오와 오디오의 립싱크를 맞출 수 있다.
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