Synchronized Audio and Still Picture Playback Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current DVD audio standards cannot display still pictures during audio playback, as they synchronize picture display only within the audio's time period, failing to allow for continuous or repeated playback of both audio and images in a slide show format.
Innovation Solution
An information record medium and apparatus that includes still picture information, audio information, and reproduction control information, allowing for synchronized and repeatable playback of audio and still pictures, with control signals managing the reproduction timing and repetition of both media types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If still pictures are displayed using the reproduction clock of audio as reference only within the audio time period, then audio and still pictures can be synchronized, but still pictures cannot be displayed when no audio exists and repeat playback is not possible
Solution Approach 1:
The patent separates the reproduction control into independent components: still picture reproduction control and audio reproduction control. The still picture information is reproduced based on its own reproduction clock independent of audio, while audio is reproduced based on audio reproduction control information. This segmentation allows still pictures to be displayed continuously or repeatedly without being constrained by audio duration, resolving the contradiction between picture display capability and audio playback duration.
Solution Approach 2:
The patent introduces dynamic control through reproduction control information that can independently adjust still picture reproduction timing and audio reproduction timing. The system can dynamically set still pictures to repeat or play continuously while audio plays once, or synchronize them differently. This dynamic control allows the still picture display to adapt independently from audio playback, enabling continuous or repeated display beyond audio duration constraints.
2Duration of action of stationary object
If audio and still pictures are reproduced independently with separate control, then continuous and repeated playback is possible, but synchronization control becomes more complex
Solution Approach 1:
The reproduction control system is segmented into distinct control modules: one for still picture reproduction control and another for audio reproduction control. Each module manages its respective media type independently with dedicated control information. This segmentation reduces overall system complexity by breaking down the control mechanism into manageable, independent units rather than requiring a single complex synchronized control system.
Solution Approach 2:
The reproduction control information structure is designed to be universal and multi-functional. It can control both still picture reproduction and audio reproduction through a standardized format that handles timing, repetition, and synchronization parameters. This universal control structure manages the complexity by providing a unified framework that can adapt to different reproduction scenarios (synchronized playback, continuous pictures with audio once, repeated pictures without audio, etc.) without requiring separate complex control mechanisms for each case.
Data Source
AI summary
An information recording medium has recorded thereon a plurality of sets of still image information to be continuously played back in the form called a slide show audio information to be played back in synchronization with the still image information. Also recorded on the information recording medium is playback control information for playing back the audio information in synchronization with the sets of still image information. When the still image information sets are sequentially played back, the audio information is played back in synchronization with the still image information according to the playback control information. The playback control information includes audio repeat information for controlling the repetition of the audio information. The repeated playback of the audio information is controlled according to the audio repeat information.