Video Transcoder for Wireless Device Memory and Bandwidth Reduction
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Solution Overview
Problem
Wireless devices face challenges in storing and communicating high-resolution video images due to large processing resources and cost increases, and they struggle to support varying compression methods for image transmission between devices.
Innovation Solution
A method and apparatus for transcoding compressed video information from one compression method to another, allowing for the communication of video data between devices with different decompression capabilities, using a transcoder to convert high compression ratio data to a lower compression ratio format like JPEG or JPEG 2000, enabling compatibility across different devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If video information is stored in full resolution in memory, then image quality is improved, but processing resources and cost increase
Solution Approach 1:
The patent divides the video frame into multiple blocks or segments that can be processed independently. Each segment is compressed separately using compression algorithms, allowing the system to handle high-resolution video by processing smaller manageable units rather than the entire frame at once, thus reducing processing resource requirements while maintaining image quality.
Solution Approach 2:
The patent introduces a compression algorithm as an intermediary between the full-resolution video data and the memory storage. This intermediary transforms the high-resolution video into a compressed format that requires fewer processing resources to store and manage, while still preserving the essential image quality through sophisticated compression techniques.
2Adaptability or versatility
If devices use different compression methods, then device versatility is improved, but communication compatibility deteriorates
Solution Approach 1:
The patent implements a universal communication framework that can handle multiple compression methods. The system is designed to accept video data compressed with various algorithms, automatically identify the compression method used, and apply appropriate decompression techniques, thereby enabling devices with different compression capabilities to communicate effectively without sacrificing compatibility.
Solution Approach 2:
The patent employs parameter changes by detecting the compression method parameters and dynamically adjusting the decompression process accordingly. When video data is received, the system analyzes the compression parameters, selects the appropriate decompression algorithm, and processes the data to ensure compatibility across devices using different compression standards.
3Quantity of substance
If high compression ratio is used, then memory requirements are reduced, but image quality deteriorates
Solution Approach 1:
The patent applies local quality by using different compression ratios for different regions or blocks within the video frame. Important areas that require higher image quality are compressed with lower compression ratios, while less critical areas use higher compression ratios. This selective approach reduces overall memory requirements while preserving image quality in essential regions.
Solution Approach 2:
The patent implements dynamic compression where the compression ratio is adjusted based on the content being processed. The system analyzes the video data and dynamically selects appropriate compression levels, using higher compression for static or less important areas and lower compression for dynamic or important areas, thereby optimizing the balance between memory requirements and image quality.
Data Source
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AI summary
A method and apparatus for communicating compressed video information includes storing video information compressed based on a first compression method, such as a method with a high compression ratio, and transcoding the compressed video information to produce corresponding recompressed video information that is based on a second compression method, with a lower compression ratio such as standard JPEG compression or other suitable compression. The method and apparatus, if desired, may include sending the recompressed video information for a destination apparatus which may then suitably decompress the video information using a standard decompression technique. For example, storing the compressed image in a high compressed format, for example, in a piecewise basis may be done online while the camera, for example, is in use so that the image is properly captured and then, transcoding the compressed image to a different level of compression while the camera is offline.