Wireless Display Sink Device Integrated Communication Module
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Solution Overview
Problem
Conventional wireless display sink devices require additional hardware such as APs or dongles for wireless communication, limiting their range and increasing costs, and they struggle to maintain data transmission effectively beyond a certain distance from the AP when using Wi-Fi direct technology.
Innovation Solution
A wireless display sink device that establishes a wireless communication link with a source device using a wireless communication module integrated into a Printed Circuit Board (PCB), eliminating the need for external adapters and enabling connection through various wireless standards, including Wi-Fi, without requiring an AP or dongle, and includes a decoder, audio DAC, interface, and timing controller to manage and display video and audio data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If Wi-Fi direct technology is used to establish a wireless communication link between source device and sink device, then the need for an AP is eliminated, but a certified dongle must be attached to the sink device which increases cost
Solution Approach 1:
The patent merges the wireless communication functionality directly into the sink device by integrating a wireless communication module with the display controller, eliminating the need for a separate certified dongle while maintaining Wi-Fi direct capability. This integration reduces both device complexity and manufacturing cost.
Solution Approach 2:
The sink device is designed with multi-functionality by incorporating both display control and wireless communication capabilities into a single device. The display controller can operate in multiple modes (receiving display data, generating display data) and the wireless communication module supports various protocols, reducing the need for additional specialized hardware.
2Reliability
If a conventional sink device uses an AP for wireless communication, then wireless video transmission is enabled, but the device cannot receive data if it is more than a certain distance away from the AP
Solution Approach 1:
The patent implements dynamic communication mode switching that allows the sink device to adaptively change between different wireless communication modes based on distance and signal conditions. The device can switch from AP-dependent mode to direct wireless communication mode, dynamically extending the effective communication range while maintaining reliable data transmission.
3Length of moving object
If a conventional sink device uses Wi-Fi direct technology without an AP, then communication range is extended, but a certified dongle must be attached which increases cost
Solution Approach 1:
The patent merges the wireless communication functionality directly into the sink device by integrating a wireless communication module with the display controller, eliminating the need for a separate certified dongle while maintaining Wi-Fi direct capability. This integration reduces both device complexity and manufacturing cost.
Data Source
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AI summary
A wireless display sink device comprises a display panel driver and a PCB (Printed Circuit Board) connected to a wireless communication module. The PCB comprises: a decoder that decodes audio/video data received from the wireless communication module and separates audio data and video data; an audio DAC (Digital Analog Converter) that converts the audio data into an analog voltage; and a timing controller that transmits the video data to the display panel driver and controls the operation timing of the display panel driver.