Module Address Setting via Impedance Adjustment
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Solution Overview
Problem
Identical authentication circuit modules used in printers, such as toner bottles and imaging units, require distinct communication addresses to avoid bus conflicts, increasing manufacturing complexity and costs due to the need for different non-volatile memory variables.
Innovation Solution
Regulating the power connection voltage and adjusting impedance between the power and ground connections to dynamically set unique communication addresses for identical modules, allowing them to operate on the same I2C bus without additional connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different non-volatile memory variables are used to assign distinct addresses to identical modules, then bus conflicts are avoided, but manufacturing complexity and costs increase
Solution Approach 1:
The patent changes the electrical parameter (impedance) of the power connection to dynamically set the module address. By adjusting the impedance between power and ground connections, the module can assume different communication addresses on the I2C bus, eliminating the need for different non-volatile memory variables in identical modules.
2Reliability
If different non-volatile memory variables are programmed in identical modules, then unique addresses are achieved, but additional manufacturing steps and costs are incurred
Solution Approach 1:
The patent uses impedance adjustment as a physical parameter change to encode address information. This approach replaces the need for programming different non-volatile memory variables, thereby reducing manufacturing steps and costs while achieving unique address assignment for identical modules.
3Adaptability or versatility
If impedance is adjusted to regulate power voltage and set addresses, then identical modules can share the same I2C bus, but power connection voltage control complexity increases
Solution Approach 1:
The patent merges the power voltage regulation function with the address setting function into a single impedance adjustment mechanism. By controlling the impedance between power and ground connections, the system simultaneously regulates the power connection voltage and sets the module communication address, eliminating the need for separate control circuits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the use of identical modules in multiple printer components with distinct addresses, simplifying manufacturing and reducing costs by avoiding bus conflicts and allowing for flexible address assignment based on voltage and current thresholds.
Implementation Method 1
adjusting an impedance between the power connection and the ground connection to regulate a power connection voltage targeted to a predetermined target voltage
Implementation Method 2
increasing current flowing into the module through the power connection to regulate a voltage between the power connection and the ground connection
Data Source
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AI summary
A method of operating a module is disclosed. The method includes adjusting an impedance between a power connection and a ground connection to regulate a power connection voltage targeted to a predetermined target voltage, and setting a module communication address based on the adjustment. Other methods are disclosed.