Single-Wire Resistor Switching for Data Conflict Prevention
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Solution Overview
Problem
Existing communication systems connected by a single wire face issues with data conflicts and floating phenomena due to bidirectional data transmission, which can lead to data loss and inefficiencies, especially when devices operate at different frequencies.
Innovation Solution
A method and system that utilize a resistor connected to a single wire to manage data transmission and reception, where the resistor is activated during data waiting and deactivated upon receiving a packet, ensuring proper handover states and preventing conflicts by maintaining a stable voltage level during data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If bidirectional data transmission is implemented over a single wire, then communication efficiency is improved, but data conflicts and floating phenomena occur
Solution Approach 1:
A pull-up resistor is introduced as an intermediary component connected to the single wire. The resistor acts as a mediator to establish a default high voltage state on the communication line, preventing floating phenomena and ensuring stable signal levels during bidirectional transmission between devices operating at different frequencies.
Solution Approach 2:
The system performs preliminary actions by asserting a high voltage state on the single wire before actual data transmission begins. This preliminary voltage establishment prevents data conflicts by ensuring both devices start from a known stable state, eliminating floating phenomena that would otherwise occur during idle periods between transmissions.
2Device complexity
If a single wire is used for connection, then device complexity is reduced, but data conflicts occur during bidirectional communication
Solution Approach 1:
The pull-up resistor serves as a simple intermediary component that maintains reliable data transmission over the single wire without requiring complex protocols or additional communication lines. This minimalistic approach preserves the simplicity of the single-wire connection while effectively preventing data conflicts through voltage level management.
3Adaptability or versatility
If devices operate at different frequencies, then system adaptability is improved, but floating phenomena occur during data transmission
Solution Approach 1:
The system changes the voltage parameter of the communication line by using a pull-up resistor to maintain a default high state. This parameter modification ensures signal stability regardless of the operating frequencies of connected devices, preventing floating phenomena that would otherwise occur due to frequency mismatches during idle or transition periods.
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 approach effectively prevents data conflicts and floating phenomena, ensuring reliable bidirectional data communication over a single wire by controlling the resistor's connection to the wire, thus maintaining efficient data transfer even with differing operation frequencies.
Implementation Method 1
A first end of a resistor is electrically connected to a first wire when a first device waits for a second packet from a second device. The first end of the resistor is electrically disconnected from the first wire when the first device receives the second packet from the second device through the first wire
Data Source
AI summary
Provided are a device connected to another device by a single wire and a method of operating a system including the devices. The method of operating the device connected to the other device by the single wire includes transmitting a first packet to the other device, waiting to receive a second packet from the other device, and receiving the second packet from the other device. When the waiting to receive the second packet is started, electrically connecting a first end of a resistor to the first wire, and when the waiting to receive the second packet is terminated, electrically disconnecting a resistor from the first wire. A second end of the resistor is connected to either a logic high level voltage source or a logic low level voltage source.