Mobile Terminal Automatic DMB Channel Access via Audio Recognition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Users of mobile communication terminals face difficulties in retrieving desired digital multimedia broadcasting (DMB) programs due to the need to manually search through channel information, which becomes increasingly cumbersome with a variety of broadcast programs.
Innovation Solution
A mobile communication terminal system that automatically accesses DMB by processing audio signals from a microphone to generate and transmit channel access information requests, allowing the terminal to receive and display channel access information, enabling users to automatically tune into desired programs without manually searching through channel information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users manually retrieve EPG and select channel information to find desired broadcast programs, then users can access broadcast programs, but the operation becomes increasingly difficult and time-consuming as the number of programs increases
Solution Approach 1:
The patent replaces the manual mechanical process of scrolling through EPG and selecting channels with an acoustic field-based automatic recognition system. The terminal captures audio signals from the microphone, processes them through pattern recognition algorithms, and automatically identifies the desired program, substituting manual mechanical operations with automated acoustic and computational processes.
Solution Approach 2:
The terminal performs self-service by automatically capturing audio signals, processing them through the pattern recognition unit, identifying the desired program without user intervention, and tuning to the correct channel. This eliminates the need for users to manually search through EPG and select programs.
2Loss of information
If the terminal provides detailed channel information for various broadcast programs, then users can find their desired programs, but the complexity of information retrieval increases with more programs
Solution Approach 1:
The patent extracts the essential acoustic signature of the desired program from the audio environment and uses it as a unique identifier. Instead of requiring users to navigate through complex program information, the system extracts the audio pattern and directly matches it with broadcast signals to identify and access the desired program.
3Reliability
If users select channel information from display unit to verify desired program, then users can confirm program identity, but the process becomes cumbersome with increasing number of programs
Solution Approach 1:
The system provides feedback by capturing the user's spoken request through the microphone, processing it through pattern recognition, and automatically tuning to the identified program. The audio-based feedback loop replaces the visual display selection process, maintaining reliability through accurate audio pattern matching while significantly simplifying the operation.
Data Source
AI summary
Disclosed is a mobile communication terminal automatically accessing to DMB, including: a broadcast receiving unit that receives and demodulates a DMB signal, extracts and processes a video signal and an audio signal from the DMB signal, and outputs the video signal and the audio signal to a display unit and an audio output unit, respectively; a channel information acquisition unit that processes an audio signal inputted from a microphone of the mobile communication terminal in an automatic channel access mode, generates and transmits to a channel information providing server a channel access information request message that includes the audio signal and time information concerning the time when the audio signal is input, and receives and outputs a channel access information response message; and a broadcast control unit that outputs a channel tuning control signal to the broadcast receiving unit according to the channel access information inputted from the channel information acquisition unit.