MAC Address Assignment for Tandem Print Engine Image Path Boards
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Solution Overview
Problem
In integrated print systems, identical MAC addresses on image path boards within tandem configurations prevent unique communication and IP address assignment, leading to network resolution issues.
Innovation Solution
A method to assign unique MAC addresses to image path boards by modifying card cage enclosures with bit selectors, creating unique slot IDs, and using routers to isolate redundant MAC addresses, ensuring each print engine has distinct IP and MAC addresses for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If identical MAC addresses are assigned to image path boards in tandem configurations, then manufacturing and hardware standardization are simplified, but network communication and IP address assignment fail due to address conflicts
Solution Approach 1:
The patent modifies the MAC address parameter by injecting a unique identifier (such as a slot ID or serial number) into the MAC address generation process. This creates a differentiated MAC address for each image path board while maintaining the same hardware configuration, thereby resolving the address conflict issue without requiring different hardware components.
Solution Approach 2:
The patent introduces an intermediary mechanism (a unique identifier injection system) that bridges the gap between identical hardware components and the requirement for unique network addresses. This intermediary element (unique ID) is combined with the base MAC address to create a unique network identity for each board.
2Reliability
If unique MAC addresses are generated for each image path board using additional hardware modifiers, then network communication is enabled, but device complexity increases due to modified card cage enclosures and bit selectors
Solution Approach 1:
The patent extracts the uniqueness requirement from the physical hardware modification and relocates it to the firmware/software layer. Instead of modifying the card cage enclosure physically, the system uses existing unique identifiers (slot IDs, serial numbers) that are already present in the system to differentiate MAC addresses, thereby eliminating the need for additional hardware modifiers.
Solution Approach 2:
The patent replaces the mechanical approach (physical modification of card cage enclosures with bit selectors) with an electronic/software-based approach. The unique MAC address generation is achieved through firmware that combines a base MAC address with digital unique identifiers, eliminating the need for mechanical hardware modifications.
3Reliability
If routers are used to isolate redundant MAC addresses, then network identification is resolved, but system complexity and configuration difficulty increase
Solution Approach 1:
The patent performs the MAC address differentiation action in advance, during the boot-up or initialization phase, before any network communication attempts occur. The unique identifier is injected into the MAC address generation process automatically, so that when the system attempts to communicate, unique addresses are already in place, eliminating the need for subsequent router configuration or isolation measures.
Data Source
AI summary
The present disclosure provides a method of assigning media access control (MAC) addresses to image paths for a printing system. The method comprises: initializing a MAC address to each image path board in the printing system wherein the printing system includes at least two print engines each having an image path board; modifying a card cage enclosure to include a bit selector for each image path board; and, creating a unique IP address for each MAC address including generating a unique octet for each MAC address. A slot ID is used for the generating of the unique octet for each MAC address having a standard base value.