Display Antenna Module Layout for Obstruction-Resilient A/V Links
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Solution Overview
Problem
Current wireless display systems face challenges in maintaining optimal video quality when the location of the A/V transmitting device affects antenna module alignment, leading to signal obstruction and increased compression rates, which degrade image quality.
Innovation Solution
The electronic device employs a configuration with first and second antenna structures featuring multi-layer PCBs and array antennas, utilizing horizontally and vertically polarized signals to ensure seamless A/V wireless communication regardless of the transmitting device's location, even with obstacles, by adjusting beamforming directions and utilizing reflected waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If one stream is used for wireless transmission, then the compression rate must be doubled to maintain data transmission level, but image quality deteriorates
Solution Approach 1:
The patent divides the single data stream into two separate antenna modules, each receiving a separate stream. This segmentation allows the system to maintain higher image quality by avoiding the need to double the compression rate, as each antenna can independently receive high-quality data without compression degradation.
Solution Approach 2:
The patent positions antenna modules at specific locations (left and right sides of the display device) to optimize signal reception from different directions. This local optimization ensures that at least one antenna can receive signals with acceptable quality regardless of the transmitting device's position, maintaining overall image quality without requiring excessive compression.
2Reliability
If antenna modules are positioned on left and right sides with IR module in between, then wireless communication can be established, but signal is blocked when A/V transmitting device is on left or right side
Solution Approach 1:
The patent uses antenna modules with different polarization characteristics (one horizontally polarized, one vertically polarized) positioned asymmetrically on left and right sides. This asymmetric configuration with different polarizations ensures that regardless of the transmitting device's position or orientation, at least one antenna can receive signals without blockage from the IR module or other obstructions.
Solution Approach 2:
The patent changes the polarization parameter of the antenna modules to include both horizontal and vertical polarizations. This parameter diversification allows the system to maintain reliable wireless communication by selecting the appropriate polarization based on the transmitting device's position, overcoming signal blockage issues caused by the IR module or device orientation.
3Productivity
If compression rate is increased to maintain transmission level with one stream, then data transmission can be sustained, but image quality level decreases
Solution Approach 1:
The patent segments the data transmission into two parallel streams received by separate antenna modules. This segmentation eliminates the need to increase compression rates, as each antenna independently receives uncompressed or lightly compressed data, sustaining high data transmission levels while maintaining superior image quality.
Solution Approach 2:
The patent introduces multiple antenna modules as intermediaries between the transmitting device and the processing system. These intermediate antennas provide redundant reception paths, allowing the system to sustain high data transmission rates without increasing compression, as the intermediate antennas can select or combine signals to maintain optimal image quality.
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 configuration maintains high data reception rates and video quality by minimizing mutual interference and optimizing communication capacity, allowing for reliable A/V transmission without the need for increased compression rates.
Implementation Method 1
a first array antenna, a first wireless communication IC, and a second array antenna may be disposed on a first surface, a second surface, and a fifth surface of the plurality of side surfaces of the first PCB, respectively
Implementation Method 2
The polarization of the first array antenna may be the same as that of the third array antenna. The polarization of the second array antenna may be different from that of the fourth array antenna
Implementation Method 3
The first and second PCBs may constitute a plurality of side surfaces. A first array antenna, a first wireless communication IC, and a second array antenna may be disposed on a first surface, a second surface, and a fifth surface of the plurality of side surfaces of the first PCB, respectively
Data Source
Figure 1~2
Figure 3
Figure 4(a)~4(b)
AI summary
An electronic device may include a display; and first and second antenna structures disposed around the display. The first antenna structure may include a first PCB, first and second array antennas, and a first wireless communication circuit. The second antenna structure may include a second PCB, third and fourth array antennas, and a second wireless communication circuit. The second and fourth array antennas may form a beam pattern in a first direction, which is a bottom direction. The first and third array antennas may form a beam pattern in a third direction, which is a front direction.