BD-ROM Click Sound Mixing Control for Multi-Channel Audio
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Solution Overview
Problem
The introduction of click sounds in motion picture playback can interrupt multi-channel audio outputs, leading to concerns about damaging high-quality audio systems and limiting the adoption of click sound technology in motion picture production.
Innovation Solution
A recording medium that includes management information and a flag to control whether click sounds are mixed with audio streams, allowing for selective playback control to prevent interruption of multi-channel audio outputs, enabling the use of click sounds without adverse effects on audio quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If click sound mixing is enabled with multi-channel audio streams, then click sound functionality is improved, but audio output reliability deteriorates due to band restrictions
Solution Approach 1:
The patent implements dynamic control of click sound mixing based on playback conditions. The playback apparatus determines whether multi-channel audio streams are being played back and dynamically enables or disables click sound mixing accordingly. This dynamic adaptation allows the system to provide click sound functionality when appropriate while maintaining audio output reliability when multi-channel streams are active, thus resolving the technical contradiction.
2Ease of operation
If click sound mixing is performed on multi-channel audio streams, then user interaction feedback is improved, but audio system compatibility deteriorates
Solution Approach 1:
The patent applies local quality control by treating click sound mixing differently based on the specific audio stream being played back. When multi-channel audio streams are detected, click sound mixing is disabled for those streams while potentially remaining enabled for other audio outputs. This localized control approach maintains user interaction feedback quality for appropriate audio outputs while ensuring compatibility with audio systems that have band restrictions, thereby resolving the contradiction between ease of operation and adaptability.
Data Source
AI summary
A BD-ROM on which an AVClip and a Java™ application are recorded. The AVClip includes a video stream and an audio stream multiplexed therein. On the BD-ROM recorded further are management information and the Mixing_On flag corresponding to the management information. The management information indicates a playback control of the AVClip that is to be played back when the Java™ application is executed. The Mixing_On flag indicates whether or not when a user performs an operation on the Java™ application being executed while the AVClip is under the playback control, mixing of the click sound with an audio output of the AVClip is available.