Address Mapping Module for DVD Storage Space Utilization
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Solution Overview
Problem
The existing memory management systems for optical disc data face inefficiencies in utilizing storage space and accessing digital versatile disc data, as they either require complex computing processes to address sectors or leave storage space unused, impacting programmer workload and memory device utilization.
Innovation Solution
A memory management apparatus and method that includes an address mapping module to convert logic addresses into physical addresses, allowing easy access to digital versatile disc data stored in a memory device, comprising arithmetic logic units and an adder unit to generate physical addresses, and an access control module to facilitate data retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If data is divided to fully utilize memory storage space, then storage utilization is improved, but address computing complexity increases
Solution Approach 1:
The patent pre-establishes a mapping relationship between logical addresses (DVD sector addresses) and physical addresses (memory device addresses) before data access operations. The address mapping module pre-calculates and stores the correspondence between 182-byte sector addresses and 128-byte memory unit addresses, so that during actual data access, the pre-computed mapping table can be directly queried without performing complex real-time calculations, thus resolving the contradiction between storage utilization and address computing complexity
2Device complexity
If complete sectors are stored without division, then address computing is simplified, but storage space waste increases
Solution Approach 1:
The patent segments the 182-byte DVD sector data into multiple 128-byte memory unit storage spaces. The address mapping module establishes a mapping relationship that allows a single logical sector address to correspond to multiple physical memory addresses. This segmentation enables complete utilization of memory storage space while maintaining simplified address access through the mapping mechanism, thus resolving the contradiction between address simplicity and storage utilization
3Quantity of substance
If memory storage is optimized for DVD sector size, then storage efficiency is improved, but compatibility with standard memory units decreases
Solution Approach 1:
The patent introduces an address mapping module as an intermediary layer between the DVD logical address system and the memory device physical address system. This intermediary translates DVD-specific 182-byte sector addresses into standard 128-byte memory unit addresses, allowing the system to maintain both storage efficiency for DVD data and compatibility with standard memory units. The mapping module acts as a buffer that reconciles the incompatibility between DVD sector size and memory unit size
Data Source
AI summary
A memory management apparatus and a related method thereof for accessing digital versatile disc(DVD) data stored in a memory device are disclosed. The memory management apparatus includes an address mapping module, coupled to a bus, for receiving a logic address from the bus and for generating a physical address according to the logic address, and an access control module, coupled to the address mapping module and the memory device, for accessing the digital versatile disc data according to the physical address.