Partition Map Memory Management for Imaging Cartridges

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Solution Overview

Problem

Existing imaging material supply cartridges waste valuable memory space due to inefficient schemes for identifying attributes of data stored in their memory.

Innovation Solution

The cartridges employ a partition map that groups data fields based on access mode and encryption attributes, using a single partition address to associate both access and encryption information, thereby conserving memory space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If separate memory space is used to store access mode and encryption attributes, then data identification accuracy is improved, but memory space is wasted

Engineering Contradiction:

Improvedata identification accuracyVSAvoidmemory space

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent combines access mode attributes and encryption attributes into a single partition address field. Instead of storing these attributes separately in different memory locations, the invention merges them into one unified structure that simultaneously encodes both the access mode (read-only, read-write, or delete) and encryption status (encrypted or unencrypted), thereby eliminating memory waste while maintaining complete data identification capability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The partition address field is designed to serve multiple functions simultaneously. A single field value encodes both access control information and encryption information, making the memory structure multi-functional. This universal encoding approach allows the same memory space to provide both identification and attribute storage without requiring additional dedicated spaces

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Ease of operation

If multiple separate fields are used to store access mode and encryption information, then data organization is improved, but device complexity increases

Engineering Contradiction:

Improvedata organizationVSAvoidmemory structure complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The invention merges multiple separate storage fields into a single partition address field that encapsulates both access mode and encryption attributes. This consolidation simplifies the memory structure by reducing the number of separate fields that need to be managed, while still maintaining clear data organization through the unified encoding scheme

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP2335120B3Partition map

Publication Date: 2018.07.18 HEWLETT PACKARD DEVELOPMENT COMPANY LP

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Figure 4

AI summary

An imaging material supply cartridge (24) uses a partition map (52) to identify access modes and encryption attributes.