Mobile Terminal Controller for Simultaneous DMB Output and UI Access
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Solution Overview
Problem
Mobile communication terminals cannot perform other functions while outputting Digital Multimedia Broadcasting (DMB) to an external AV device, as they switch to a single operating mode when DMB is being output, preventing simultaneous use of the user interface units for other purposes.
Innovation Solution
A mobile communication terminal with a controller that senses switching command signals from a user interface unit, allowing the terminal to switch between DMB and other functions without terminating the DMB output to an external AV device, enabling continuous DMB viewing while using other terminal functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the mobile communication terminal outputs DMB to an external AV device, then the user can watch DMB on a large screen with high-quality sound, but the user interface unit cannot be used simultaneously for other purposes
Solution Approach 1:
The patent segments the terminal's operational modes by introducing a sub-mode classification within DMB output mode. The controller distinguishes between first sub-modes (where UI is blocked) and second sub-modes (where UI remains accessible), allowing simultaneous DMB output and other functions. This segmentation resolves the contradiction by creating distinct operational states that preserve both display quality and functionality.
Solution Approach 2:
The patent implements dynamic mode switching based on detected key inputs. When a key input is detected during DMB output, the controller dynamically transitions from a first sub-mode (blocking UI) to a second sub-mode (allowing UI), enabling adaptive behavior that maintains both DMB output quality and user interface accessibility depending on user needs.
2Ease of operation
If the mobile communication terminal switches operating mode when DMB is output to external AV device, then the terminal responds to user input, but the user cannot use other functions that are not active in DMB mode
Solution Approach 1:
The patent divides DMB output mode into multiple sub-modes (first and second sub-modes) based on UI accessibility. In the second sub-mode, the terminal responds to key inputs while maintaining DMB output, whereas the first sub-mode blocks UI access. This segmentation allows the terminal to provide responsive operation without sacrificing function availability, as users can access both DMB and other functions simultaneously in the second sub-mode.
Solution Approach 2:
The patent enables the terminal to perform multiple functions simultaneously by allowing other functions to operate in parallel with DMB output in the second sub-mode. This multi-functionality approach resolves the contradiction by making the terminal universal enough to handle both DMB broadcasting and other user functions without requiring mode switching.
3Stability of the object's composition
If the mobile communication terminal remains in a single operating mode while outputting DMB, then the DMB output is stable, but the user cannot access functions that require mode switching
Solution Approach 1:
The patent segments the single DMB output mode into multiple sub-modes that differ in UI accessibility and function availability. The second sub-mode specifically allows both stable DMB output and access to other functions through key inputs, resolving the contradiction by creating a stable yet versatile operational state through sub-mode differentiation.
Solution Approach 2:
The patent introduces dynamic sub-mode transitions within the stable DMB output framework. The controller maintains stable DMB output while dynamically adjusting UI accessibility based on user interactions, allowing the system to remain stable for DMB broadcasting while adapting to provide function access when needed through second sub-mode activation.
Data Source
AI summary
Provided is a mobile communication terminal capable of receiving Digital Multimedia Broadcasting (DMB), which includes a mobile communication terminal module, a DMB module, an external broadcasting output unit, a user interface unit, and a controller. The mobile communication terminal module provides various functions of the mobile communication terminal except for DMB. The DMB module receives and outputs DMB. The external broadcasting output unit outputs DMB received through the DMB module to an external Audio/Video (AV) device. The user interface unit provides operations of the mobile communication terminal mode and the DMB module for viewing continuity and receiving an input from the user. The controller designates the mobile communication terminal module for inputting an operating signal from and outputting the operating signal to the user interface unit if the controller senses a switching command signal for switching to the mobile communication terminal module through the user interface unit while DMB is output to the external AV device through the external broadcasting output unit.