Display Bluetooth Device Switching for Accurate Class Identification

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Solution Overview

Problem

Display apparatuses often incorrectly identify the class of connected Bluetooth devices, leading to inconsistent and inappropriate sound output behavior, as interactions between different Bluetooth devices (such as headphones and speakers) require specific modes that are not matched by the apparatus's identification.

Innovation Solution

The display apparatus recognizes the first class of a connected Bluetooth device and updates it to the actual second class upon receiving a user-confirmed device switch command within a specified time, ensuring interactions align with the device's characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the display apparatus uses standard Bluetooth Class of Device (Cod) identification, then the connection process is simple and fast, but the device class identification is inaccurate leading to inappropriate sound output behavior

Engineering Contradiction:
Improvedevice class identification accuracyVSAvoididentification process complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by sending test commands to the Bluetooth device before final identification. It first attempts to control the device using headphones-specific commands, and only if those fail, proceeds to speaker-specific commands. This preliminary testing approach enables accurate device class identification without requiring complex identification protocols, thus resolving the contradiction between identification accuracy and process complexity.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the display apparatus automatically identifies Bluetooth device class using Cod, then the connection is established quickly, but the sound output behavior becomes inconsistent and inappropriate

Engineering Contradiction:
Improvesound output consistencyVSAvoiddevice identification time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system implements feedback mechanisms by monitoring the response of Bluetooth devices to control commands. When headphones-specific control commands are sent and the device responds appropriately (e.g., volume control works, playback pauses), the system confirms accurate identification. If the device doesn't respond as expected, the system feedback-indicates misidentification and switches to speaker identification mode. This feedback-based verification ensures reliable sound output behavior while minimizing identification time through efficient command-response testing.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If the display apparatus uses generic Bluetooth interaction mode, then it can work with any Bluetooth device, but it cannot provide device-specific optimized interactions

Engineering Contradiction:
Improvedevice-specific interaction capabilityVSAvoidinteraction mode complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system applies dynamics by making the interaction mode flexible and adaptable rather than fixed. It dynamically switches between headphones-specific and speaker-specific interaction modes based on real-time device identification results. The system can adjust its control commands, UI presentation, and audio routing according to the identified device type, providing optimized interactions for each device class while maintaining a unified underlying architecture, thus achieving device-specific optimization without excessive complexity.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12418610B2Device switching method for display apparatus and display apparatus
Publication Date: 2025.09.16 HISENSE VISUAL TECH CO LTD
  • US12418610B2 patent drawing
  • US12418610B2 patent drawing
  • US12418610B2 patent drawing

AI summary

Disclosed are a device switching method for a display apparatus and a display apparatus. The method includes: recognizing a first class of device of a Bluetooth device, and presenting the first class of device in a first user interface; in response to a device switch command being received within a specified time from outside, determining that the first class of device is different from an actual second class of device, updating the first class of device in the first user interface to the second class of device, and interacting with the Bluetooth device according to the second class of device; and in response to no device switch command being received within the specified time input from outside, determining that the first class of device is the same as the actual second class of device, and interacting with the Bluetooth device according to the second class of device.