Image Output Control Interface for Handheld Display Expansion
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Solution Overview
Problem
Handheld devices have limited display sizes, which restrict the viewing experience during operation, and existing control devices do not adequately address this limitation while maintaining portability and convenience.
Innovation Solution
A control device with image output capabilities, featuring transmission interfaces and a control circuit that connects to both a handheld device and an external device, allowing the control device to be combined with a transmission interface and a control circuit, which can identify and connect to external devices for display or charging, enabling the control device to output display signals to external displays and receive power from charging devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display image of the handheld device is output to an external display device, then the viewing experience is improved, but the device complexity increases due to additional transmission ports and control circuits
Solution Approach 1:
The control device is designed with multi-functional transmission ports that can identify and adapt to different external devices (display devices or charging devices). The same transmission port can function as a display output port when connected to a display device or as a charging port when connected to a charging device, eliminating the need for separate dedicated ports for each function and thereby reducing device complexity while maintaining improved viewing experience capability
Solution Approach 2:
The control device dynamically identifies the type of external device connected to the transmission port and automatically adjusts its output function. When a display device is detected, the transmission port outputs display signals; when a charging device is detected, it outputs power signals. This dynamic adaptation allows the device to provide enhanced viewing experience when needed without permanently increasing complexity through fixed dedicated components
2Adaptability or versatility
If the control device supports multiple external device connections, then the adaptability is improved, but the ease of operation deteriorates due to device identification requirements
Solution Approach 1:
The control device automatically identifies the type of external device connected to its transmission ports without requiring user intervention. The control circuit performs device identification and automatically configures the appropriate output function (display signal or power signal), making the system self-serve and eliminating the need for users to manually configure or understand the identification process, thereby maintaining ease of operation while achieving high adaptability
3Device complexity
If the transmission port is used for both display output and charging functions, then the device complexity is reduced, but the reliability deteriorates due to potential function conflicts
Solution Approach 1:
The transmission port dynamically switches its function based on real-time device identification. The control circuit detects the external device type and automatically configures the transmission port to output either display signals or power signals, ensuring that only one function is active at a time. This dynamic function allocation eliminates function conflicts and ensures reliable operation while maintaining low device complexity through shared hardware resources
Solution Approach 2:
The control device implements a feedback mechanism where the control circuit continuously monitors the type of external device connected to the transmission port. Based on this feedback information, the system automatically adjusts the transmission port's output function to match the connected device requirements, preventing function conflicts and ensuring reliable operation. The feedback loop ensures that the system adapts to the correct configuration without user intervention
Data Source
AI summary
A control device having image output includes a transmission interface and a control circuit. The transmission interface has a first transmission port and a second transmission port. When the first transmission port is connected to a handheld device, the control device obtains a first input power supplied by the handheld device through the first transmission port, and when the second transmission port is connected to a first external device, the control circuit identifies the first external device. When the first external device is a display device, the control circuit controls the handheld device to supply power to the display device, and controls the display device to display a display signal of the handheld device. When the first external device is a charging device, the control circuit controls the charging device to supply power to the handheld device.