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Source device, sink devices, methods and computer programs

A technology of receiving equipment and source equipment, which is applied in the field of computer programs, audio receiving equipment, and video receiving equipment, and can solve problems such as use and failure

Pending Publication Date: 2021-08-17
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But again, this is almost never implemented, and thus cannot be used in practice

Method used

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  • Source device, sink devices, methods and computer programs
  • Source device, sink devices, methods and computer programs
  • Source device, sink devices, methods and computer programs

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0270] Figure 5B Shown are STB 500B (eg source device 100; 200; 400), sound bar 582B (eg audio playback device 282; 482; 682; 782), TV 592B (eg video rendering device 292; 892; 992), audio Another device 581B in the path, and a schematic representation of a given setup for another device 591B in the video path.

[0271] 1) After discovering the topology, the source 500B has all the information about the audio and video paths.

[0272] 2) EDID statement:

[0273] 3) Via CEC DaNoL, AL MPEG-H Set to 150 milliseconds.

[0274] NOTE: If latency negotiation between the STB and the soundbar fails, both devices must use the default MPEG-H audio latency

[0275] 4) Soundbar 582B reports five values ​​via CEC DaNoL message, but only uses AL in this specific case none MPEG-H value of:

[0276] [AL none MPEG-H = 80ms, VL = 20ms, AL MPEG-H = 150ms, AL MPEG-Hpassthrough = 20ms, VL current =20ms] 条形音箱

[0277] Optionally, the information provided by the soundbar may be ...

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Abstract

The present invention refers to a source device for providing audio data and video data on one or more digital media interfaces, wherein the source device is configured to automatically adjust a time alignment between a provision of audio data and a provision of video data based on an information about a latency of an audio path and based on an information about a latency of a video path.

Description

technical field [0001] Embodiments of the invention relate to a source device for providing audio data and video data over one or more digital media interfaces. [0002] A further embodiment of the invention relates to a receiving device, in particular a video receiving device. [0003] A further embodiment of the invention relates to another receiving device, in particular an audio receiving device. [0004] A further embodiment of the invention relates to a method for providing audio data and video data over one or more digital media interfaces. [0005] A further embodiment of the invention relates to a computer program. [0006] Embodiments according to the present invention provide means to implement lip synchronization in audio / video equipment connected via HDMI, HDMI ARC and S / PDIF. Background technique [0007] Playback of audio / video content typically involves many devices interconnected using eg HDMI, HDMI ARC and S / PDIF links. HDMI carries eg audio and video, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/4363H04N21/43
CPCH04N21/43635H04N21/43072H04N21/43615H04N21/4402H04N21/485
Inventor 斯特凡·克尔盖洛托马斯·海勒里纳特·泽伊赫伯特·托玛
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV