Multimedia Television Wireless Audio Upgrade Card
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Solution Overview
Problem
Conventional multimedia systems are inconvenient due to complex connecting lines between loudspeakers, limiting users' ability to easily switch between 2-channel and 5.1-channel stereo configurations.
Innovation Solution
A multimedia system that allows wireless transmission of audio signals using an upgrading/transmitting card, enabling users to upgrade a 2-channel stereo system to a 5.1-channel stereo system by inserting the card, which also facilitates wireless audio signal transmission to rear loudspeakers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless transmission is implemented in a 5.1-channel stereo system, then audio signal transmission convenience is improved, but device complexity increases due to embedded transmitter requirements
Solution Approach 1:
The upgrading/transmitting card is designed with multi-functionality to resolve the contradiction. It can operate in two modes: (1) As a wireless transmitter when inserted, enabling 5.1-channel stereo with wireless rear speaker connection; (2) As a conventional audio output device when removed, maintaining 2-channel stereo functionality. This universal design eliminates the need for separate transmitter hardware, reducing device complexity while preserving wireless transmission convenience.
Solution Approach 2:
The system dynamically adapts its configuration based on whether the upgrading/transmitting card is inserted. The audio processing/controlling device automatically adjusts its output mode - switching between 2-channel and 5.1-channel configurations - allowing the system to optimize between simplicity and wireless convenience depending on user needs.
2Adaptability or versatility
If a pluggable upgrading/transmitting card is used, then adaptability between 2-channel and 5.1-channel configurations is improved, but device complexity increases due to additional components
Solution Approach 1:
The upgrading/transmitting card merges multiple functions into a single integrated component: it combines wireless transmission capabilities, audio signal processing, and configuration adaptation features. By consolidating these functions into one pluggable card rather than requiring separate hardware components for each function, the overall system complexity is reduced while maintaining high adaptability between 2-channel and 5.1-channel configurations.
Data Source
AI summary
A multimedia television system is disclosed. The multimedia television system comprises a receiver, a detector, an audio processing/controlling device, and a mixing device. The receiver receives an audio/video signal comprising an audio signal and a video signal and outputs the audio signal and the video signal respectively. When an external upgrading/transmitting device is connected to the detector, the detector will generate an upgrading signal. When the audio processing/controlling device receives the upgrading signal, the audio processing/controlling device will process the audio signal into a multi-channel audio signal comprising front sub-audio signals and rear sub-audio signals according to the upgrading signal. Then, the mixing device processes the rear sub-audio signals into at least one mixed audio signal. The detector receives the at least one mixed audio signal and transmits the at least one mixed audio signal via the external upgrading/transmitting device.