MPEG 1 to MPEG 2 Data Format Conversion Method

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Solution Overview

Problem

Disc players with separate play navigations for MPEG 1 and MPEG 2 formats waste system resources as only one navigation is active at a time, leading to inefficient use of system memory.

Innovation Solution

A method to convert MPEG 1 data format into a single MPEG 2 data format by reading and mapping table of content and play sequence descriptor files, allowing integration of play navigations and reducing resource usage through the creation of title files that support Video 1.1 and Video 2.0 specifications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If separate play navigations are provided for MPEG 1 and MPEG 2 formats, then both formats can be played, but system memory is wasted due to duplicate navigation components

Engineering Contradiction:

Improveformat compatibilityVSAvoidsystem memory usage

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent merges separate MPEG 1 and MPEG 2 play navigations into a single unified navigation system. The navigation structure is consolidated so that one navigation component can handle both formats by reading and interpreting format-specific data structures (TOC for MPEG 1, title files for MPEG 2) through a common navigation framework, eliminating duplicate navigation code and reducing memory consumption.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The unified navigation system is designed to be universal, capable of playing both MPEG 1 and MPEG 2 formats through a single navigation component. The navigation structure incorporates format-agnostic elements that can adapt to different data formats, allowing the same navigation object to serve multiple functions across different media formats without requiring separate dedicated navigations for each format.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Device complexity

If data formats are converted to a single format, then navigation can be integrated, but data structure transformation is required

Engineering Contradiction:

Improvenavigation structureVSAvoiddata conversion process

Core Design Contradiction:

Device complexityVSEase of manufacture

Solution Approach 1:

The patent introduces an intermediary data conversion process that transforms MPEG 1 data structures (TOC, tracks) into MPEG 2 equivalent structures (title files, program chains, cells). This intermediary conversion layer acts as a bridge, translating the source format's data organization into the target format's structure, enabling the unified navigation to interpret and play both formats through a common data model without requiring complex dual-navigation architecture.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS7844169B2Method for converting data format

Publication Date: 2010.11.30 VIA TECH INC

AI summary

A method for converting the MPEG 1 data format to the MPEG 2 data format is provided. The method includes reading and mapping the MPEG 1 data format to the MPEG 2 data format to generate a first title file and a second title file. Sequential playback functions defined in the Video 1.1 specification is supported when the first title file is selected for playback. Otherwise, playback controls functions defined in the Video 2.0 specification is supported when the second title file is selected for playback.