Display Overscan Control via Device Label Storage
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Solution Overview
Problem
Conventional display units overscan images unconditionally, cutting undesired portions and outputting images that users do not want, necessitating a method to control overscan operations based on user preferences or device types.
Innovation Solution
A method and apparatus that store label information about external devices in storage means, allowing users to select devices and determine whether to perform an overscan operation, thereby outputting images without overscanning when not desired and overscanning when desired.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the display unit performs overscan operation unconditionally, then black stripes or noise at the edges of the screen are removed, but the input image is cut and outputted without user consent
Solution Approach 1:
The overscan operation is made dynamic and adjustable rather than fixed. The display unit can switch between overscan and non-overscan modes based on user selection or device type detection, allowing the system to adapt its behavior to different situations and user preferences.
Solution Approach 2:
The system changes the parameter of overscan application from a constant state to a variable state. By detecting device types or receiving user instructions, the system modifies the overscan parameter (applied or not applied) to match the specific requirements of different external devices or user preferences.
2Reliability
If the display unit overscans all input images, then edge noise is eliminated, but user convenience is reduced due to manual selection requirements
Solution Approach 1:
The display unit performs self-service by automatically detecting the type of connected external device and applying the appropriate overscan setting without requiring manual user intervention. The system uses built-in detection capabilities to identify device types and automatically configures the overscan parameter accordingly.
Solution Approach 2:
The system performs preliminary action by pre-configuring overscan settings for different device types before actual operation. When an external device is connected, the system references pre-stored device type information and automatically applies the appropriate overscan parameter, eliminating the need for real-time manual selection.
3Ease of operation
If the display unit automatically detects external devices, then user convenience is improved, but device complexity increases due to detection and classification systems
Solution Approach 1:
The detection system serves multiple functions: it identifies external device types, determines appropriate overscan settings, and automatically configures display parameters. By making the detection mechanism multi-functional, the system reduces the need for separate complex subsystems and achieves automatic recognition through a unified approach.
Data Source
AI summary
Disclosed herein are a method for controlling the output of a display unit to meet various requirements of the user, and an output control apparatus employing the same.


