Display-Speaker Pairing Using IR Keycodes for Easy Bluetooth Audio
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Solution Overview
Problem
Existing digital TV systems require complex procedures for Bluetooth-connecting a display device to an external speaker, which is inconvenient for users.
Innovation Solution
A display device and external speaker system that uses an IR keycode and Bluetooth circuit to facilitate a simplified connection process through a single button input, where the external speaker transmits a preset IR keycode to the display device, which generates a random key set and matches it with a received IR keycode set to establish a Bluetooth connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex Bluetooth connection procedure is used, then connection reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The external speaker stores a preset IR keycode in advance, and the display device generates and displays a random key set before connection. When the user presses the button, the system compares the preset IR keycode with the generated random key set, enabling reliable connection identification without complex procedures.
Solution Approach 2:
The patent uses an IR keycode as an intermediary mechanism between the display device and external speaker. This intermediary element facilitates the connection process by providing a simple comparison-based authentication method that ensures reliability while maintaining ease of operation.
2Ease of operation
If a simplified connection procedure is used, then ease of operation is improved, but connection reliability may deteriorate
Solution Approach 1:
The display device provides visual feedback by displaying the generated random key set on the screen. This feedback mechanism allows the user to understand the connection process and verify the matching between the preset IR keycode and the generated key set, enhancing both ease of operation and connection reliability.
3Adaptability or versatility
If multiple display devices are available, then adaptability is improved, but difficulty of detecting and measuring increases
Solution Approach 1:
The patent segments the connection process into distinct phases: the display device generates and displays a random key set, the external speaker stores the preset IR keycode, and the button press triggers the comparison. This segmentation makes it easy to identify which display device should connect to which external speaker, reducing identification complexity even when multiple devices are present.
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
Enables easy and convenient connection of an external speaker to a display device with a single button input, improving user experience and simplifying the connection process.
Implementation Method 1
an IR circuit to receive an Infrared (IR) keycode from an external speaker
Data Source
AI summary
A display device including a display; a speaker, and a controller configured to receive a first keycode from a first external speaker, receive a signal including an identification of the first external speaker, and connect the display device and the first external speaker to output sound in a surround sound mode or a simultaneous sound mode in response to the received first keycode corresponding to the identification of the first external speaker.