Display OSD Image Positioning via Software Ratio Parameters
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Solution Overview
Problem
Display devices face challenges in maintaining the size and position of OSD images across different screen resolutions without increasing manufacturing costs, as existing solutions require hardware scalers to prevent image enlargement, reduction, or shifting.
Innovation Solution
A display device with a processing unit, storage unit, and image generating unit that calculates and applies display ratio parameters to maintain a fixed image size and position by multiplying pixel amounts per unit length, allowing the image to be displayed consistently across various screen resolutions without hardware scalers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a scaler is added to the display device to maintain fixed image size and position across different screen resolutions, then the image stability is improved, but the manufacturing cost increases
Solution Approach 1:
The patent replaces the mechanical hardware scaler with a software-based processing method. The processing unit uses algorithms to calculate display ratios and adjust image parameters based on different screen resolutions, eliminating the need for dedicated scaler hardware while maintaining image stability across various resolutions
Solution Approach 2:
The patent changes physical parameters by dynamically adjusting display ratio parameters (horizontal and vertical pixel amounts per unit length) based on the detected screen resolution. The processing unit retrieves the current resolution, compares it with stored resolution profiles, and applies corresponding display ratio parameters to maintain consistent image positioning and sizing without hardware intervention
2Manufacturing precision
If a scaler is added to the display device to prevent OSD image enlargement, reduction, and shifting, then the image quality is improved, but the device complexity increases
Solution Approach 1:
The processing unit performs multiple functions: it detects screen resolution, retrieves appropriate display ratio parameters, calculates adjusted image parameters, and controls image generation and display. This multi-functional approach eliminates the need for dedicated scaler hardware, reducing device complexity while maintaining precise image positioning across different resolutions
Solution Approach 2:
The patent introduces display ratio parameters as an intermediary between the image source and display output. These parameters act as a mediation layer that translates image coordinates to the specific screen resolution, enabling precise positioning without direct hardware scaling intervention
Data Source
AI summary
A display device includes a display unit having N adjustable screen resolutions; a storage unit storing a setting list, the setting list recording the N adjustable screen resolutions and N display ratio parameters; a processing unit retrieving a current screen resolution from the display unit and comparing the current screen resolution with the N adjustable screen resolutions, the processing unit selecting an i-th display ratio parameter corresponding to an i-th adjustable screen resolution from the N display ratio parameters when the current screen resolution is identical to the i-th adjustable screen resolution; and an image generating unit generating an image according to the i-th display ratio parameter and displaying the image in the display unit.