Transcoder Hinting via Style Sheet Classes
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Solution Overview
Problem
Current transcoding systems for delivering web resources to mobile communication devices are inefficient, often requiring duplication of effort and lacking control for web resource owners, as they fail to effectively modify web resources optimized for PCs before delivery, leading to suboptimal user experiences and bandwidth inefficiencies.
Innovation Solution
The method involves transcoding web resources based on style sheet classes and meta tags within the web resources, allowing owners to influence the transcoding process and modify the content, removing or adding elements as needed, to create optimized versions suitable for mobile devices, thereby controlling the user experience and reducing bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If web resources are transcoded automatically by mobile network operators or third parties, then mobile device compatibility is improved, but web resource owners lose control over the transcoding process and user experience
Solution Approach 1:
The patent applies preliminary action by embedding style sheet classes and meta tags into the original web resource before delivery. These markup elements预先 define transcoding instructions that will be executed by the transcoder, allowing owners to control the transcoding process in advance without needing to manually manage each transcoding operation. This resolves the contradiction by establishing control mechanisms before the transcoding occurs.
Solution Approach 2:
The patent implements feedback by creating a control loop where style sheet classes in the original web resource influence the transcoding process. The transcoder reads these markup elements and adjusts the transcoded output accordingly, providing feedback to the owner's intended design. This allows owners to control user experience while maintaining automatic transcoding for mobile compatibility.
2Loss of energy
If web resources are delivered without transcoding, then bandwidth usage is reduced, but mobile communication devices cannot properly display or use the content
Solution Approach 1:
The patent applies taking out by extracting only the necessary style sheet classes and meta tags from the original web resource that are needed for transcoding control. These markup elements are lightweight and do not significantly increase bandwidth usage, while enabling the transcoder to produce mobile-optimized versions. This resolves the contradiction by removing minimal overhead to enable reliable mobile display.
Solution Approach 2:
The patent introduces an intermediary approach by using style sheet classes and meta tags as中介 elements between the original web resource and the transcoding process. These markup elements serve as instructions to the transcoder, enabling efficient transcoding that reduces bandwidth usage while ensuring proper mobile displayability. The intermediary markup facilitates the transformation without requiring full duplication of content.
3Ease of operation
If web resources are specifically encoded for mobile devices, then user experience is improved, but duplication of effort increases for maintaining separate PC and mobile versions
Solution Approach 1:
The patent applies universality by creating a single web resource that serves multiple functions - it can be displayed on PC browsers as-is and automatically transcoded for mobile devices using style sheet classes and meta tags. This eliminates the need for separate PC and mobile versions, improving productivity while maintaining excellent user experience on both platforms. The same content adapts universally to different device types.
Solution Approach 2:
The patent uses preliminary action by embedding style sheet classes and meta tags in advance into the single web resource. These pre-defined markup elements enable automatic transcoding for mobile devices without requiring separate mobile-specific content. This resolves the contradiction by establishing a universal resource with built-in adaptation capabilities, eliminating duplication while improving mobile user experience.
4Adaptability or versatility
If standard style sheets are used for rendering, then browser compatibility is improved, but they do not modify web resources before delivery to mobile devices
Solution Approach 1:
The patent applies copying by creating a transcoded copy of the web resource specifically optimized for mobile devices. The original web resource remains unchanged for PC browsers, while a modified copy is generated for mobile delivery using style sheet classes and meta tags as guidance. This resolves the contradiction by maintaining the original for broad browser compatibility while producing an optimized copy for mobile pre-delivery optimization.
Solution Approach 2:
The patent introduces an intermediary process where style sheet classes and meta tags act as mediators between the original web resource and the transcoded mobile version. These markup elements guide the transcoder to create an optimized copy without modifying the original, enabling pre-delivery optimization for mobile while preserving browser compatibility of the source. This resolves the contradiction by facilitating selective optimization through intermediary markup instructions.
Data Source
AI summary
A transcoding system (1) comprises a mobile communication device (2) that retrieves a web resource from a web server (6) using a mobile communication network (3) and the internet (4) via a transcoder (5). The transcoder (5) transcodes the web resource before delivering it to the mobile communication device (2). The process of transcoding the web page is carried out based on style sheet classes and/or meta tags in the web page. This allows a web site owner (7) to control the actions of the transcoder (5) in transcoding the web page.