Display Apparatus Frame Rate Demonstration and Control
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Solution Overview
Problem
Current display apparatuses, such as plasma and liquid crystal displays, process video signals using interlace scan methods that differ from the 24 or 25 frames per second progressive scan method of film video signals, resulting in an inconsistent frame rate, which disrupts the normal viewing experience of movies.
Innovation Solution
A display apparatus and control method that process video signals to adjust the frame rate, allowing for the simultaneous display of video signals at inherent and corrected frame rates, such as 24 or 25 frames per second and 30 frames per second, using techniques like 3:2 pull down and deinterlacing, and providing user interface options for frame rate demonstration and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display apparatus processes video signals using interlace scan method at 60 fields per second (NTSC) or 50 fields per second (SECAM), then the display apparatus can operate according to standard broadcast specifications, but the frame rate becomes inconsistent with film video signals which use progressive scan method at 24 or 25 frames per second, resulting in motion judder and degraded viewing quality
Solution Approach 1:
The display apparatus dynamically adjusts the frame rate conversion method based on the input signal type. When a film signal is detected, the system automatically applies appropriate frame rate conversion (3:2 pull-down for 24fps, 2:2 pull-down for 25fps) to match the display's native frame rate, thereby maintaining both reliability and viewing quality without requiring manual user configuration
Solution Approach 2:
The system changes the temporal parameter (frame rate) of the video signal through frame rate conversion. By converting the film signal's frame rate from 24 or 25 fps to match the display's 60 or 50 fields per second using interlace scan, the system resolves the frame rate inconsistency while maintaining signal integrity and viewing quality
2Ease of operation
If the display apparatus converts the frame rate of film video signals to match the display's native frame rate, then the viewing quality and motion smoothness are improved, but the user loses the ability to understand and adjust the frame rate settings, making it difficult to recognize the display environment
Solution Approach 1:
The display apparatus introduces a frame rate demonstration function that acts as an intermediary between the frame rate conversion process and the user. This function temporarily displays the original frame rate information or provides visual cues about the conversion being applied, allowing users to understand the frame rate settings while the conversion continues to improve viewing quality
Solution Approach 2:
The system provides feedback to the user about the frame rate conversion status through the frame rate demonstration function. This feedback mechanism informs users about the display environment and current frame rate settings, enabling them to make informed adjustments while maintaining the benefits of frame rate conversion for viewing quality
3Adaptability or versatility
If the display apparatus provides comprehensive user interface options for frame rate demonstration and adjustment, then users can understand and control the display environment, but the device complexity increases
Solution Approach 1:
The frame rate demonstration function serves multiple purposes: it informs users about the current frame rate settings, provides visual feedback about the conversion process, and enables user control over frame rate adjustments. By consolidating these functions into a single integrated feature, the system achieves high adaptability without proportionally increasing device complexity
Data Source
AI summary
A display apparatus, includes: a display unit; a signal receiving unit which receives a video signal; a signal processing unit which processes the video signal received by the signal receiving unit to be displayed; an input unit through which a frame rate demonstration function is selectable; and a control unit which controls the signal processing unit so that the video signal is processed into an inherent frame rate of the video signal and at least one corrected frame rate which is different from the inherent frame rate to be displayed in different areas of the display unit if the frame rate demonstration function is selected through the input unit.