Service Guide Decoding with Embedded Phonetic Data
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Solution Overview
Problem
The increasing demand for multimedia services on mobile devices has led to a need for efficient decoding of service guides in wireless and broadcast services, particularly in mobile broadcast technologies, where existing solutions lack effective support for phonetic information and content encoding in service guides.
Innovation Solution
A method and decoder for decoding service guides associated with video bitstreams, which include receiving and decoding content fragments containing name and description elements with embedded speech information objects, utilizing URI addresses and content encoding attributes to provide phonetic information and enhance accessibility for visually impaired users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If service guides include phonetic information for accessibility, then accessibility for visually impaired users is improved, but device complexity increases due to additional speech information objects and URI elements
Solution Approach 1:
The patent embeds speech information objects directly within the service guide XML structure, nesting phonetic data inside existing name and description elements. This allows the decoder to access phonetic information without requiring separate external resources, reducing overall system complexity while maintaining accessibility
Solution Approach 2:
The patent introduces URI (Uniform Resource Identifier) elements as intermediaries that link service guide elements to external speech information resources. This mediator approach allows flexible access to phonetic data while keeping the service guide structure standardized, enabling accessibility without hardcoding complex phonetic data structures
2Loss of information
If service guides include embedded speech information objects, then phonetic information availability is improved, but data transmission size increases
Solution Approach 1:
The patent allows speech information to be embedded locally within specific name and description elements that require phonetic support, rather than including global phonetic data for all service guide elements. This selective embedding approach ensures phonetic information is available where needed while minimizing overall data size
Solution Approach 2:
The patent divides speech information into separate, independent speech information objects that can be selectively included or excluded based on specific service guide elements. Each speech information object is a self-contained unit that can be processed independently, allowing efficient data management and reduced transmission size
3Adaptability or versatility
If service guides support multiple content encodings, then adaptability to different devices is improved, but decoding complexity increases
Solution Approach 1:
The patent implements dynamic content encoding support where the decoder can adaptively process different encoding formats (such as UTF-8, UTF-16) based on the specific service guide element being decoded. The decoding complexity is managed through a standardized interface that handles encoding variations transparently, maintaining device compatibility without requiring multiple specialized decoders
Data Source
AI summary
The invention is: A method for decoding a service guide associated with a video bitstream comprising: (a) receiving a content fragment within the service guide, (b) receiving a name element within the content fragment, (c) receiving a description element within the content fragment and (d) decoding the service guide.