Display Bezel Diversity Boards for Millimeter Wave NLOS Reception

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Solution Overview

Problem

Existing technologies face challenges in enabling seamless high-speed data communication of millimeter waves or terahertz waves under non-line-of-sight (NLOS) conditions due to high power consumption and increased size, particularly in mobile communication terminals like smartphones, where beam-forming technologies are power-intensive and bulky.

Innovation Solution

A display apparatus with multiple diversity boards installed in a bezel, converting received millimeter or terahertz waves into baseband signals, sensing output powers, and selecting the board with maximum output to ensure seamless data communication, using a controller and selector to connect the optimal board to an image converter, thereby reducing power consumption and size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If beam-forming technology is used to enable NLOS communication, then communication reliability is improved, but power consumption increases significantly

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system segments the communication function by separating the transmitter (in mobile terminal) from the receiver array (in display apparatus). The mobile terminal uses a single omnidirectional antenna for transmission, while the display apparatus uses multiple receive antennas with beam-forming capability. This segmentation allows the power-intensive beam-forming operation to be performed only at the receiver side, solving the contradiction between communication reliability and power consumption at the mobile terminal.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent inverts the conventional beam-forming approach by making the display apparatus (receiver) perform beam-forming operations instead of the mobile terminal (transmitter). The receiver uses multiple antennas to create beam-forming patterns to receive signals from the omnidirectional transmitter, thereby achieving reliable NLOS communication without requiring the transmitter to consume excessive power.

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

If beam-forming technology with multiple transceivers is used, then NLOS communication capability is improved, but product size increases

Engineering Contradiction:

ImproveNLOS communication capabilityVSAvoidproduct size

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The system segments the beam-forming functionality into the display apparatus side only, using multiple receive antennas arranged in an array. The mobile terminal requires only a single omnidirectional antenna, dramatically reducing its size. The display apparatus handles all beam-forming complexity, enabling NLOS communication capability while keeping the mobile terminal compact.

Inventive Principle:

Principle #1Segmentation

3Reliability

If multiple signal paths are used for beam-forming, then communication reliability under NLOS is improved, but device complexity increases

Engineering Contradiction:

Improvecommunication reliability under NLOSVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent inverts where the beam-forming complexity is located: instead of requiring the mobile terminal to manage multiple signal paths and transceivers, the system places the beam-forming receiver array in the display apparatus. The mobile terminal simply transmits omnidirectionally, while the display apparatus performs all the complex signal processing to create multiple reception paths, thereby achieving reliable NLOS communication without increasing mobile terminal complexity.

Inventive Principle:

Principle #13The other way round (Inversion)

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 solution enables seamless data reception and transmission of high-definition images without data loss even in NLOS environments, with reduced power consumption and smaller circuit size, allowing for efficient communication using a single transmitter instead of an array structure.

Implementation Method 1

receive millimeter waves or terahertz waves having different paths, convert the received waves into a plurality of baseband signals

Methodology Applied

Scientific EffectElectromagnetic wave reception and conversion: Electromagnetic Induction

Data Source

PatentUS9237290B2Display apparatus of receiving millimeter wave or terahertz wave under non-line-of-sight conditions and displaying method thereof

Publication Date: 2016.01.12 KOREA ADVANCED INST OF SCI & TECH

AI summary

Provided is a display apparatus for receiving millimeter waves or terahertz waves from a transmitter under a non-line-of-sight condition, the apparatus including: a plurality of diversity boards that are installed in a bezel of the display apparatus, receive millimeter waves or terahertz waves having different paths, convert the received waves into a plurality of baseband signals, and sense output powers of the plurality of baseband signals; a controller to output a control signal for selecting a diversity board of a maximum output power from the output powers sensed by the plurality of diversity boards; a selector to connect the diversity board of the maximum output power among the plurality of diversity boards to an image converter by the control signal; and the image converter to convert an output of the selector into image data for displaying.