USB OTG Host I/O Voltage Sampling for Adaptive Drive Settings
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Solution Overview
Problem
Existing host devices struggle to adaptively select and use parameter sets to drive USB OTG devices with varying compatibility and non-standard connections, leading to unsuccessful device operation.
Innovation Solution
A host device equipped with an input/output port, controller, and analog-to-digital converter dynamically adjusts configuration parameter sets based on sampled voltage values from I/O pins to accommodate different USB OTG devices, irrespective of transmission line material or quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a host uses a fixed parameter set to drive USB OTG devices, then the host can operate with simple control logic, but the host cannot adapt to USB devices with worse compatibility or non-standard connections
Solution Approach 1:
The host device automatically detects voltage values on I/O pins and selects appropriate configuration parameter sets without user intervention. The system self-adjusts by sampling voltage signals and matching them against stored parameter sets, eliminating manual configuration needs while achieving adaptability across different USB devices
Solution Approach 2:
The host device changes configuration parameters based on detected voltage values. By sampling voltage signals on I/O pins and comparing them against predetermined voltage ranges associated with different parameter sets, the system dynamically adjusts operational parameters to match the connected USB device characteristics
2Reliability
If a host uses a fixed parameter set, then the device structure remains simple, but the host fails when connecting USB devices with transmission lines not meeting specific standards
Solution Approach 1:
The patent replaces complex transmission line characterization with electrical voltage sampling. Instead of mechanically or electrically measuring transmission line properties directly, the system uses an analog-to-digital converter to sample voltage values on I/O pins, which indirectly reflect transmission line characteristics, simplifying the detection process while improving reliability
Solution Approach 2:
Voltage values serve as an intermediary parameter between the physical transmission line characteristics and the configuration parameter selection. The analog-to-digital converter samples voltage signals that are influenced by transmission line properties, and these voltage values mediate the selection of appropriate parameter sets, bridging the gap between physical characteristics and operational configuration
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 successful driving of USB OTG devices by adaptively selecting appropriate parameter sets, overcoming issues related to transmission line variability.
Implementation Method 1
an analog-to-digital converter coupled to the first I/O pin and the second I/O pin and configured to sample a first data signal on the first I/O pin to obtain a first voltage value and further to sample a second data signal on the second I/O pin to obtain a second voltage value
Data Source
AI summary
A host device is provided and coupled to an electronic device. The host device includes an I/O port, a controller, and an ADC. The I/O port includes first and second VO pins. The first and second I/O pins are coupled to the electronic device. The controller is configured to drive the electronic device using a configuration parameter set. The ADC is coupled to the first I/O pin and the second I/O pin and configured to sample a first data signal on the first I/O pin to obtain a first voltage value and further to sample a second data signal on the second I/O pin to obtain a second voltage value. The controller receives the first voltage value and the second voltage value and changes the configuration parameter set according to the first voltage value and the second voltage value.