Video Reproducing Device Format Matching and Screen Switching
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Solution Overview
Problem
Video reproducing devices struggle to match and reproduce moving image files with mismatched video and audio formats, and they lack easy switching between still image and video index screens, leading to incomplete or unclear reproduction and display issues.
Innovation Solution
The solution involves adding information to thumbnail images to indicate audio reproduction capabilities, providing a remote controller with a switch operation unit for sequential switching between still image and moving image index screens, and using a background image with a horizontal stripe pattern to control brightness levels, ensuring clear format matching and easy screen viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If format matching is strictly enforced for both video and audio formats, then reproduction reliability is improved, but adaptability deteriorates because neither video nor audio can be reproduced when one format mismatches
Solution Approach 1:
The patent segments the format matching process into separate evaluations for video format and audio format. Instead of treating them as a single unified check, the system independently assesses each format's compatibility with the reproducing device, allowing selective reproduction based on individual format matching results.
Solution Approach 2:
The patent applies local quality by providing different reproduction outcomes for video and audio components based on their respective format matching status. When video format matches but audio format doesn't, only video is reproduced; when audio format matches but video format doesn't, only audio is reproduced. This localized handling resolves the contradiction between strict matching and adaptability.
2Loss of information
If detailed format matching information is provided for both video and audio, then information completeness is improved, but device complexity increases
Solution Approach 1:
The patent divides format information display into separate indicators for video format matching and audio format matching. This segmentation allows comprehensive format information to be presented without requiring a single complex indicator system, thereby managing device complexity while maintaining information completeness.
Solution Approach 2:
Instead of displaying a single composite status that would require complex processing, the patent inverts the approach by displaying separate, simple indicators for video and audio format status. This inversion simplifies the display mechanism while preserving complete format information.
3Ease of operation
If multiple screen types are made easily switchable, then ease of operation is improved, but device complexity increases due to additional switching mechanisms
Solution Approach 1:
The patent merges the switching function for different screen types (still image index screen, moving image index screen, and normal video screen) into a single switch operation unit on the remote controller. This consolidation allows easy switching between multiple screen types without requiring separate controls for each, thereby improving ease of operation while minimizing the increase in device complexity.
4Ease of operation
If background image brightness is increased for better visibility, then ease of operation is improved, but image quality deteriorates due to brightness differences with thumbnails
Solution Approach 1:
The patent changes the brightness parameter of the background image to a specific level (about 40% average brightness) that optimizes the balance between visibility and image quality. This parameter adjustment ensures the background is bright enough for easy operation while maintaining consistent brightness with thumbnail images, preventing distracting brightness differences.
Data Source
AI summary
The present invention provides a video reproducing device which provides a function of reproducing a still image file and a moving image file recorded onto a recording medium in plural formats so that a user can easily identify a matched statuses of the files in the video reproducing device and can select and operate a target file as well as a control method therefor. The present invention displays an index screen in which thumbnails of a still image file and a moving image file in plural formats read from a recording medium are arrayed and further displays icons for clarifying a match relation between the video reproducing device and the files.