Peripheral Device Master-Slave Mode Switching
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Solution Overview
Problem
The increasing number of electronic devices leads to a significant inconvenience in purchasing and storing various transmission cables, particularly OTG cables with five core wires, which are not commonly available and thus increase user costs.
Innovation Solution
A peripheral device with a Type-A USB connector receptacle that includes a processing unit, energy storage, and terminals for identifying the master-slave mode, allowing it to transmit notification signals through the signal terminals to switch the electronic device from a slave to a master mode, thereby enabling OTG functionality with a common four-core transmission cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a specific OTG cable with five core wires is used for master mode control, then the electronic device can control peripheral devices in master mode, but the purchase cost and storage space for users increase
Solution Approach 1:
The peripheral device is designed with an integrated energy storage unit (battery) and a master-slave mode identification module that can detect whether the connected electronic device is in master or slave mode. This allows the peripheral device to function as a master device using a common four-core USB cable, eliminating the need for a separate five-core OTG cable. The device achieves multi-functionality by adapting to different connection modes and providing master mode control capabilities through software/firmware rather than requiring specialized hardware cables.
2Adaptability or versatility
If a five-core OTG cable is used to provide power and signal transmission, then the electronic device can operate in master mode, but the cable availability and ease of purchase deteriorate
Solution Approach 1:
The peripheral device incorporates its own energy storage unit (battery) that can provide power to the electronic device when connected in master mode. This self-service capability eliminates the need for the cable to provide power transmission, allowing the use of common four-core USB cables that are widely available. The device serves its own power needs rather than relying on the cable's power transmission capability.
3Device complexity
If the connector receptacle only has four terminals without master-slave identification, then the device structure is simple, but the OTG function cannot be achieved with common cables
Solution Approach 1:
The connector receptacle maintains its standard four-terminal structure but the master-slave mode identification module changes the operational parameters by detecting the connection mode and switching the device's functional state accordingly. The identification module monitors the connection status and enables the peripheral device to operate in master mode when appropriate, achieving OTG compatibility through parameter switching rather than structural modification.
Data Source
AI summary
A peripheral device having a connector receptacle capable of identifying a master-slave mode includes a body and a connector module. The connector module includes a processing unit, an energy storage unit, and a connector receptacle. When the connector module is connected to an electronic device through a power positive terminal, a power negative terminal, a signal positive terminal, a signal negative terminal, and a transmission cable, the processing unit transmits a notification signal to the electronic device through the positive terminal of the signal and the negative terminal of the signal to notify the electronic device that the electronic device does not need to provide power to the peripheral device.