Print Component Logic Circuitry for Accurate Sensor Data Over I2C
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Solution Overview
Problem
Existing print apparatus systems face challenges in efficiently communicating and managing data between replaceable print components and the main print apparatus, particularly in accurately sensing fluid levels and other parameters due to limitations in communication protocols and resource constraints of replaceable components.
Innovation Solution
The implementation of a logic circuitry package with a processor and memory, utilizing I2C protocol for communication, which includes an amplifier for sensor signal amplification and offset adjustment, and a digital-to-analog converter for converting sensor signals into digital values, allowing for accurate data transmission and processing within the print apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If replaceable print components use simple communication protocols, then device complexity is reduced, but measurement precision and data accuracy deteriorate
Solution Approach 1:
The patent introduces an intermediary processing layer within the replaceable print component that includes signal conditioning circuits, analog-to-digital converters, and data processing logic. This intermediary layer processes sensor signals before transmission through the simple I2C protocol, thereby maintaining communication simplicity while achieving high measurement precision through local signal enhancement and processing.
2Ease of manufacture
If replaceable print components have limited processing resources, then ease of manufacture is improved, but reliability of data processing deteriorates
Solution Approach 1:
The replaceable print component is designed with self-service capabilities including on-board sensor signal processing, self-calibration functions, and autonomous data validation. The component performs necessary processing tasks independently using integrated circuits and algorithms that compensate for limited resources, ensuring reliable data processing without requiring complex external processing systems.
3Device complexity
If sensor signals are transmitted directly without amplification, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent merges multiple functions including signal amplification, filtering, offset adjustment, and analog-to-digital conversion into an integrated circuit package within the replaceable print component. This consolidation provides precise sensor signal processing through combined processing stages while managing overall device complexity through integration and standardized interfaces.
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
This solution enables reliable and accurate communication and data processing between print components, enhancing the operational efficiency and reliability of print apparatus systems by ensuring precise sensor readings and compatibility with various print materials.
Implementation Method 1
an amplifier to amplify the sensor signal and output an amplified sensor signal
Implementation Method 2
output an amplified sensor signal that is offset by an offset parameter
Implementation Method 3
a digital-to-analog converter to convert the amplified sensor signal into a digital value
Data Source
Figure 1~3
Figure 4A~4B
Figure 4C~4D
AI summary
A logic circuitry package for a replaceable print apparatus component comprises at least one logic circuit and an interface to communicate with a print apparatus logic circuit. The at least one logic circuit is configured to receive, via the interface, calibration parameters including an offset parameter and a sensor ID. The at least one logic circuit is configured to output, via the interface, a digital value corresponding to the sensor ID and offset based on the offset parameter.