Video Display Apparatus Black Screen Insertion Brightness
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Solution Overview
Problem
Existing video display apparatuses face issues with motion picture blurring and insufficient brightness when displaying two-dimensional video images, as they require black screen insertion, which leads to flickering and reduced brightness, especially at typical frame rates.
Innovation Solution
A video display apparatus and method that utilize two video processing sections to alternately output drive signals for stereoscopic and two-dimensional video images, allowing black screen insertion without reducing brightness or causing flickering, by using the same video output method as for stereoscopic images, with one section producing a video signal for two-dimensional images and the other for black screen insertion, maintaining the same frame rate and cycle as in stereoscopic displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If black screens are inserted to reduce motion picture blurring in two-dimensional video display, then the degree of motion picture blurring is reduced, but brightness becomes insufficient and flickering occurs
Solution Approach 1:
The patent applies periodic action by inserting black screens at specific intervals between video frames at high speed (60fps or higher). This periodic insertion creates a pseudo-impulse display effect that reduces motion picture blurring while maintaining sufficient brightness through the high frame rate, preventing visible flickering.
Solution Approach 2:
The patent changes the frame rate parameter to 60fps or higher when displaying two-dimensional video with black screen insertion. This parameter change allows the black screens to be inserted at such high speed that the flickering becomes imperceptible to viewers, while still achieving the motion picture blurring reduction effect.
2Illumination intensity
If frame rate is increased to 120 frames/second to suppress brightness insufficiency and flickering, then brightness and flickering are improved, but device complexity increases due to dedicated drive circuits and control processes
Solution Approach 1:
The patent makes the video processing sections universal by enabling them to handle both stereoscopic video processing and two-dimensional video processing with black screen insertion using the same hardware architecture. This eliminates the need for dedicated drive circuits and control processes, reducing device complexity while maintaining the ability to operate at high frame rates for 2D display.
3Manufacturing precision
If black screens are inserted at typical frame rate (60 frames/second) for two-dimensional video, then motion picture blurring is reduced, but brightness becomes insufficient and flickering occurs
Solution Approach 1:
The patent changes the frame rate parameter from typical 60fps to 60fps or higher specifically for two-dimensional video display with black screen insertion. This parameter adjustment ensures that black screens are inserted at sufficiently high speed to prevent visible flickering and maintain brightness, while still achieving motion picture blurring reduction.
Data Source
AI summary
A video display apparatus includes a display section that carries out a display process based on a drive signal and a drive section that outputs to the display section a first drive signal based on a video signal having undergone video processing in a first video processing section at a fixed cycle and a second drive signal based on a video signal having undergone video processing in a second video processing section at the same cycle as the cycle at which the first drive signal is outputted but at timing shifted from the first drive signal by one-half the cycle. When the video signals contain two-dimensional video images, the first video processing section produces a video signal for two-dimensional video images and the second video processing section produces a video signal for black screen insertion.