WO2010137166A1 - Dispositif de détection de délai et procédé de détection de délai - Google Patents

Dispositif de détection de délai et procédé de détection de délai Download PDF

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Publication number
WO2010137166A1
WO2010137166A1 PCT/JP2009/059883 JP2009059883W WO2010137166A1 WO 2010137166 A1 WO2010137166 A1 WO 2010137166A1 JP 2009059883 W JP2009059883 W JP 2009059883W WO 2010137166 A1 WO2010137166 A1 WO 2010137166A1
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WO
WIPO (PCT)
Prior art keywords
signal
video
output
audio
sensor
Prior art date
Application number
PCT/JP2009/059883
Other languages
English (en)
Japanese (ja)
Inventor
悟士 神田
Original Assignee
Ｎｅｃディスプレイソリューションズ株式会社
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
Application filed by Ｎｅｃディスプレイソリューションズ株式会社 filed Critical Ｎｅｃディスプレイソリューションズ株式会社
Priority to PCT/JP2009/059883 priority Critical patent/WO2010137166A1/fr
Priority to JP2011515821A priority patent/JP5305488B2/ja
Publication of WO2010137166A1 publication Critical patent/WO2010137166A1/fr

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    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/654—Transmission by server directed to the client
    • 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
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • H04N21/43072—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen of multiple content streams on the same device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • 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
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42203—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] sound input device, e.g. microphone
    • 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
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/4223—Cameras
    • 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
    • H04N21/439—Processing of audio elementary streams
    • H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client

Definitions

  • the present invention relates to a delay detection apparatus and a delay detection method for detecting a difference in reproduction timing between a video signal and an audio signal.
  • Patent Document 1 discloses correcting the delay, but does not specifically disclose how to grasp the delay time. In this case, there is no way to grasp the accurate delay time in the output of each device (panel for displaying video and speaker for audio output). In addition, there is a problem that it is difficult to perform synchronization management of video / audio signals for inspection. As described above, the means for recognizing the difference between video and audio in the above-described image display apparatus largely depends on human senses, and depending on the person who performs this adjustment, there is a difference in the recognition result of the deviation. There was a problem.
  • the present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a delay detection device and a delay detection method capable of grasping the delay time of the video and audio signals.
  • the present invention receives an input of a video signal, separates a part of the video signal and outputs it as a first signal, and outputs the remaining separated video signal as a second signal.
  • a signal branching / distributing unit that outputs the first signal output from the signal branching / distributing unit by a display device, and an output unit that outputs the second signal output from the signal branching / distributing unit by an audio output device; Based on a video sensor that detects video displayed by the display device, a sound sensor that detects audio output from the audio output device, a detection result of the video sensor, and a detection result of the sound sensor
  • a delay detection unit that detects a difference in reproduction timing between a signal obtained by the video sensor and a signal obtained by the sound sensor.
  • a part of a video signal is branched to generate a video signal and an audio signal, which are supplied to an image display device having an audio output function, and after being subjected to video processing and audio processing in the image display device Since the output is measured by a sensor, the delay time of video / audio can be grasped.
  • FIG. 1 is a schematic block diagram showing a configuration of a multi-installation monitor system using a delay detection device.
  • the signal branching / distributing means 10 receives an input of a video signal output from the PC 50, separates a part of this video signal, outputs it as a first signal (for example, a video signal), and separates it. The remaining video signal is output as a second signal (for example, an audio signal).
  • the video signal output from the PC 50 includes three types of color signals (red, green, blue) and two types of synchronization signals (horizontal signal, vertical signal), and these signals are synchronized. Yes.
  • the term “synchronization” here means that the reproduction timings of the video to be reproduced and the audio match.
  • the signal branching / distributing unit 10 separates a blue signal from among a red signal, a green signal, and a blue signal included in the video signal and supplies the separated signal as an audio signal to the audio processing unit 23 of the image display device 20.
  • Red signal, Green signal, Horizontal signal, Vertical signal are branched into video signals and supplied to the video processing unit 21 of the image display device 20.
  • synchronizing one of the color signals and outputting it as an audio signal synchronization between the video signal and the audio signal supplied to the image display device 20 is ensured.
  • the image display device 20 displays the first signal (video signal) output from the signal branching / distribution unit 10 as video, and outputs the second signal (audio signal) as audio.
  • the image display device 20 includes a video processing unit 21, a display device 22, an audio processing unit 23, and an audio device 24.
  • the video processing unit 21 performs signal processing on the video signal output from the signal branching / distribution unit 10 and displays the video signal on the display device 22.
  • the display device 22 is a liquid crystal panel, for example, and displays an image on a screen.
  • the audio processing unit 23 performs signal processing on the audio signal output from the signal branching / distribution unit 10, and outputs audio by the audio device 24.
  • the audio device 24 is a speaker, for example, and outputs an audio signal as audio.
  • the video sensor 30 detects the light of the video output by the display device 22 of the image display device 20.
  • the video sensor 30 is, for example, a photodiode.
  • the sound sensor 40 is, for example, a microphone, and detects sound output from the sound device 24 of the image display apparatus 20.
  • the measuring device 50 is controlled by the PC 60 and has a function of acquiring the measurement results of the video sensor 30 and the sound sensor 40 and outputting them to the PC 60 in real time.
  • the measuring device 50 is, for example, an oscilloscope, and digitizes the detection results obtained by the video sensor 30 and the sound sensor 40 by performing AD conversion.
  • the PC 60 is installed with an application 70 for controlling the measuring instrument 20, data analysis, and changing a video signal.
  • the application 70 detects a difference in reproduction timing between the signal obtained by the video sensor 30 and the signal obtained by the sound sensor 40 based on the detection result of the video sensor 30 and the detection result of the sound sensor 40 (delay detection). Equivalent to part).
  • the application 70 changes the video signal supplied to the signal branching / distributing means from the first color (for example, white) to the second color (for example, black), and the video generated in accordance with the change in the color.
  • a difference in reproduction timing between the signal obtained by the sensor 30 and the signal obtained by the sound sensor 40 is detected.
  • the PC 60 executes the application 70, generates a test video signal, and outputs it to the signal branching / distributing unit 10.
  • the PC 60 changes the video signal from white to black and from black to white and outputs the video signal.
  • the signal branching / distribution means 10 separates the blue signal from the video signal, supplies it to the image display device 20 as an audio signal, and supplies the other signals to the image display device 20 as video signals. At this time, the synchronization of the input signals (video signal and audio signal) input to the image display device 20 is ensured.
  • the image display device 20 outputs a video signal by the display device 22 and outputs a blue signal input as an audio signal by the audio device 24.
  • the video sensor 30 detects the light of the video output by the display device 22.
  • the sound sensor 40 detects sound output by the sound device 24.
  • the measuring device 20 AD converts the detection results obtained from the video sensor 30 and the sound sensor 40 to generate numerical data, and outputs the numerical data to the PC 60.
  • the PC 60 detects the timing at which the numerical data of the video signal and the audio signal obtained from the measuring instrument 20 changes by changing the video signal from white to black and from black to white, and the timing of the change is detected. By obtaining the difference, the delay time is detected by calculating the delay time of the video and audio signals.
  • an acceleration sensor may be used instead of the voice sensor 40.
  • the acceleration sensor By installing the acceleration sensor in the housing of the image display device 20 around the sound device, it is possible to measure a change in sound output without being affected by environmental sound.
  • the video signal controlled by the PC 60 is used as the video and audio input signal of the image display device 20, thereby omitting synchronization management of the input signal, and each device output of the image display device 20 is detected by the sensor
  • the change in video and audio is quantified by measuring at, and the delay time (temporal deviation) is calculated by the application 70 of the PC 60 to obtain an accurate delay time and provide information representing the delay time. Is possible.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Television Receiver Circuits (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

L'invention porte sur un dispositif de détection de délai qui comprend une section de branchement/distribution de signal (10) qui reçoit en entrée un signal d'image, sépare une partie du signal d'image, délivre la partie en tant que premier signal, et délivre la partie restante en tant que second signal ; une section de sortie (20) qui permet au premier signal délivré par la section de branchement/distribution de signal (10) d'être affiché par un dispositif d'affichage (22) et permet au second signal délivré par la section de branchement/distribution de signal (10) d'être délivré par un dispositif de sortie vocale (24) ; un capteur d'image (30) qui détecte une image affichée par le dispositif d'affichage (22) ; un capteur acoustique (40) qui détecte la voix délivrée par le dispositif de sortie vocale (24) ; et une section de détection de délai (60) qui détecte, sur la base du résultat détecté du capteur d'image (30) et de celui du capteur acoustique (40), la différence entre des instants de reproduction d'un signal obtenu par le capteur d'image (30) et de celui obtenu par le capteur acoustique (40).
PCT/JP2009/059883 2009-05-29 2009-05-29 Dispositif de détection de délai et procédé de détection de délai WO2010137166A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2009/059883 WO2010137166A1 (fr) 2009-05-29 2009-05-29 Dispositif de détection de délai et procédé de détection de délai
JP2011515821A JP5305488B2 (ja) 2009-05-29 2009-05-29 遅延検出装置、遅延検出方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/059883 WO2010137166A1 (fr) 2009-05-29 2009-05-29 Dispositif de détection de délai et procédé de détection de délai

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WO2010137166A1 true WO2010137166A1 (fr) 2010-12-02

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JP (1) JP5305488B2 (fr)
WO (1) WO2010137166A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016001967A1 (fr) * 2014-06-30 2016-01-07 Ｎｅｃディスプレイソリューションズ株式会社 Dispositif d'affichage, procédé d'affichage et programme d'affichage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10784024B2 (en) 2017-08-30 2020-09-22 Ultra Conductive Copper Company, Inc. Wire-drawing method and system

Citations (2)

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Publication number Priority date Publication date Assignee Title
JP2007221421A (ja) * 2006-02-16 2007-08-30 Onkyo Corp 映像音声再生システムおよびこれを構成するａｖセンターならびにモニター
JP2008148084A (ja) * 2006-12-12 2008-06-26 Funai Electric Co Ltd リップシンク測定方法およびリップシンク測定用回路

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Publication number Priority date Publication date Assignee Title
JP3727736B2 (ja) * 1996-11-08 2005-12-14 日本放送協会 映像と音声の時間差検知用の映像信号・音声信号発生装置
JP3548502B2 (ja) * 2000-05-15 2004-07-28 株式会社シグマシステムエンジニアリング 回線時間差測定装置及び回線時間差測定装置用信号発生器
JP4336879B2 (ja) * 2003-09-24 2009-09-30 日本電気株式会社 映像音声遅延確認回路及びそれに用いる映像音声遅延確認方法
JP2006186990A (ja) * 2004-12-03 2006-07-13 Shinano Kenshi Co Ltd リップシンク測定方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007221421A (ja) * 2006-02-16 2007-08-30 Onkyo Corp 映像音声再生システムおよびこれを構成するａｖセンターならびにモニター
JP2008148084A (ja) * 2006-12-12 2008-06-26 Funai Electric Co Ltd リップシンク測定方法およびリップシンク測定用回路

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016001967A1 (fr) * 2014-06-30 2016-01-07 Ｎｅｃディスプレイソリューションズ株式会社 Dispositif d'affichage, procédé d'affichage et programme d'affichage
JPWO2016001967A1 (ja) * 2014-06-30 2017-05-25 Ｎｅｃディスプレイソリューションズ株式会社 表示装置、表示方法、及び表示プログラム

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JPWO2010137166A1 (ja) 2012-11-12
JP5305488B2 (ja) 2013-10-02

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