Cartridge Chip Authorization via Central Server
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current technologies fail to effectively prevent the use of unauthorized cartridges and refills in printers and copy machines, leading to financial losses for manufacturers due to the ability of unauthorized chips to be reset or replaced.
Innovation Solution
Implementing a system with a cartridge chip containing an encryption key and computation engine that communicates with a central server for authorization during refills, using nonces and public-private key pairs to verify authorized refills and ensure secure communication, and integrating a computation module for fast calculation operations to verify the authenticity of cartridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a chip is installed on the cartridge to record ink or toner amount, then the manufacturer can track cartridge usage, but the chip can be reset or replaced by unauthorized dealers, allowing unauthorized refills
Solution Approach 1:
The patent introduces a central server as an intermediary between the printing device and the cartridge. The server stores encryption keys and verifies refill authorization, acting as a trusted mediator that prevents unauthorized chip manipulation. The server communicates with both the printing device and cartridge to authenticate refill operations, eliminating the need for complex local security mechanisms in the cartridge chip itself.
Solution Approach 2:
The patent replaces the mechanical/physical chip-based authorization system with a cryptographic system. Instead of relying on physical chip security that can be manipulated, the system uses encryption keys, digital signatures, and secure communication protocols to verify cartridge authenticity and refill authorization, making unauthorized manipulation computationally infeasible.
2Reliability
If existing chip technology is used for cartridge identification, then cartridges can be tracked, but unauthorized refills can be performed by resetting or replacing chips
Solution Approach 1:
The system enables authorized refill operations to be performed autonomously by the printing device itself, without requiring manual chip replacement or complex user intervention. The printing device automatically communicates with the central server to verify refill authorization and completes the refill process, making the secure refill as easy as traditional refilling while maintaining high security standards.
3Reliability
If traditional cartridge tracking systems are used, then usage can be monitored, but unauthorized cartridges can be used by replacing or resetting chips
Solution Approach 1:
The patent divides the authorization system into separate functional components: the cartridge contains identification information, the printing device contains verification logic, and the central server stores master encryption keys and authorization data. This segmentation allows each component to be relatively simple while the overall system provides robust security through coordinated operation of all components.
Data Source
AI summary
The systems, methods and apparatuses described herein provide a chip for a cartridge with dispensable material may be provided. In one aspect, the chip may comprise a non-volatile memory for storing a number tracking amount of dispensable material in the cartridge, a circuit with permanently and irreversibly changeable state and circuit components configured to receive and process a first message, and receive a second message. The first message may comprise a first command and an operation input value for a print job at the cartridge, and to process the first message may comprise decreasing the amount of dispensable material. The second message may comprise a second command to increase the amount of dispensable material. The circuit components may be further configured to ignore the second command if the circuit has permanently and irreversibly changed its state to prevent responding to requests to increase the number tracking amount of dispensable material.