Hybrid Scalable Encoder for Dual-Standard Video Disc Storage
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Solution Overview
Problem
Current red laser DVD players with MPEG-2 decoders lack sufficient storage capacity to support both standard-definition (SD) and high-definition (HD) video data on a single disc, necessitating separate discs or inefficient use of double-sided media.
Innovation Solution
A hybrid scalable encoder system that decomposes high-definition video data into a base layer encoded with MPEG-2 and an enhancement layer encoded with a modified H.26L (JVT or AVC) scheme, allowing both SD and HD content to be stored on a single-sided, dual-standard digital video disc playable by existing red laser devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If red laser DVD players use MPEG-2 encoding for standard-definition video, then compatibility with existing players is maintained, but storage capacity is insufficient to hold both SD and HD versions of movies
Solution Approach 1:
The video data is segmented into two distinct layers: a base layer containing standard-definition video encoded with MPEG-2, and an enhancement layer containing high-definition video encoded with H.26L. This segmentation allows the disc to store both SD and HD versions separately, enabling existing players to play the base layer while new players can access the enhancement layer for HD content.
Solution Approach 2:
The base layer SD video is nested within the disc structure as a foundational layer, and the enhancement layer HD video is added as an additional layer that builds upon it. This nested structure allows SD content to be universally accessible while HD content is optionally available, resolving the storage capacity limitation by efficiently organizing multiple video versions in a hierarchical manner.
2Quantity of substance
If blue laser technology is used to increase storage capacity for high-definition recordings, then sufficient storage for multiple HD movies is achieved, but economic feasibility is reduced due to the need to supplant the installed user base of red laser devices
Solution Approach 1:
The disc is designed with multi-functionality to serve both SD and HD playback requirements. By encoding the base layer in MPEG-2 format, the disc becomes universally compatible with existing red laser DVD players, while simultaneously providing HD content in the enhancement layer for future players. This eliminates the need for blue laser technology and maintains economic feasibility by leveraging the existing red laser infrastructure.
3Quantity of substance
If double-sided discs are used to increase storage capacity, then more content can be stored, but cost increases and labeling is interfered with
Solution Approach 1:
Instead of expanding storage by adding a second physical side to the disc (spatial dimension), the invention expands storage capacity by utilizing the data dimension - encoding video in multiple quality layers within a single-sided disc structure. This approach increases storage capacity without the complexities of double-sided discs, including increased cost, labeling interference, and mechanical complexity.
Data Source
AI summary
A hybrid scalable encoder, method, and media are disclosed for processing video signal data as a plurality of block transform coefficients for each of a base layer and an enhancement layer included on a dual standard-definition and high-definition disc. The encoder includes a two-layer decomposition unit for decomposing an original high-definition signal data sequence into base layer data and enhancement layer data, a standard-definition encoder coupled to the decomposition unit for encoding the base layer data as a base layer bitstream embodying a standard-definition data sequence, and a high-definition encoder coupled to the decomposition unit and the standard-definition encoder for encoding the difference between the high-definition data and the standard-definition data as an enhancement layer bitstream embodying a high-definition data sequence.