Voice-Controlled Display Rotation via TDOA Positioning
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Solution Overview
Problem
Existing display devices require manual or repetitive adjustments to achieve a comfortable viewing angle, and methods using image capture face challenges in accurately determining the viewer's location among multiple individuals, leading to inaccurate angle regulation.
Innovation Solution
A display device equipped with at least three voice receiving devices and a control system that uses the Time Difference Of Arrival (TDOA) method to determine the location of voice information emission, sending a rotating instruction to automatically adjust the display's viewing angle based on the calculated position, ensuring optimal viewing alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual or repetitive adjustments are used to regulate viewing angle, then the viewing angle can be adjusted, but the operation complexity increases and user convenience deteriorates
Solution Approach 1:
The display device automatically detects viewer position using voice receiving devices and TDOA calculation, then self-adjusts the viewing angle without requiring manual operation. The system serves itself by autonomously completing the angle regulation task based on environmental sensing and computational processing.
Solution Approach 2:
The patent replaces manual mechanical adjustment operations with an automated system combining acoustic sensing, computational processing (TDOA method), and electronic control. The mechanical rotation is substituted by an electronically controlled rotation device that responds to calculated position data.
2Measurement precision
If image capture methods are used to determine viewer location, then automatic angle regulation can be achieved, but measurement precision deteriorates when multiple individuals are present
Solution Approach 1:
The patent introduces voice information as an intermediary medium to indirectly determine viewer position. Instead of directly capturing images and analyzing positions, the system uses voice signals that propagate through space, with receiving devices capturing acoustic data that reveals directional and positional information through TDOA calculation.
Solution Approach 2:
The system changes the measurement parameter from visual image data to acoustic time difference data. By measuring the time difference of voice signal arrival at multiple receiving devices, the system calculates viewer position with higher precision, especially in scenarios with multiple people where image-based methods struggle to distinguish intended viewers.
3Measurement precision
If automatic rotation is implemented based on voice position, then viewing angle regulation accuracy improves, but device complexity increases
Solution Approach 1:
The voice receiving devices serve multiple functions: they detect voice signals for position calculation, and can potentially serve other audio-related functions. The control device integrates multiple tasks including TDOA calculation, position determination, rotation control, and viewing angle regulation, making the system multi-functional and reducing the need for separate dedicated components.
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
The system enables intelligent, automatic rotation of the display device to provide a comfortable viewing angle for the viewer, improving usability and accuracy by distinguishing the intended viewer's location amidst potential interference.
Implementation Method 1
at least three voice receiving devices, configured to receive voice information from outside of the display device
Data Source
AI summary
A display device and a method for regulating a viewing angle of a display device are provided and can realize the automatic regulation of angle. The display device comprises: a display main body (1); a base (2); at least three voice receiving devices (3) configured to receive voice information from outside of the display device and arranged on the display main body (1) and/or on the base (2), and projections, on a horizontal plane, of the voice receiving devices (3) being not located in a same straight line; a control device configured for recording a time point when it receives the voice information inputted by each of the voice receiving devices (3), calculating time difference between time points when any two of the voice receiving devices (3) receive the voice information, determining a location where the voice information is emitted according to the time difference and sending out a rotating instruction; and a rotation device (4) configured for rotating the display main body (1) according to the rotating instruction.