Video Signal Processing Apparatus Instant Boot Display
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Solution Overview
Problem
Conventional display systems experience a delay in displaying a logo or splash screen during the boot process, resulting in a blank screen for several seconds after power-on, as they take time to initialize both the video source and display unit.
Innovation Solution
A video signal processing apparatus that detects the absence of a video signal during the boot process and immediately transmits a pre-stored video signal from its non-volatile memory to the display unit, allowing for instant display of a logo or splash screen upon power-on, with the ability to store multiple images represented by single data frames and enter a self-refresh mode for continuous display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display system waits for the video source to complete its boot process before displaying any image, then the video signal can be properly synchronized, but the user experiences a blank screen for several seconds after power-on
Solution Approach 1:
The patent applies preliminary action by storing a default video signal (logo or splash screen) in the video signal processing apparatus before the video source completes its boot process. This pre-stored signal is immediately transmitted to the display unit upon power-on, eliminating the blank screen period while ensuring proper synchronization once the video source is ready.
2Loss of time
If the display system transmits a video signal immediately at power-on before the video source is ready, then the boot display time is reduced, but the video signal synchronization may be compromised
Solution Approach 1:
The patent uses an intermediary approach by introducing a default video signal stored in the video signal processing apparatus as a temporary placeholder. This intermediary signal fills the gap during the video source's boot process, allowing immediate display without compromising the eventual synchronization when the video source becomes ready and takes over signal generation.
3Loss of time
If the video signal processing apparatus stores video signals in memory, then immediate display at power-on is enabled, but the device complexity increases
Solution Approach 1:
The patent applies partial action by storing only a single default video signal (logo or splash screen) in the video signal processing apparatus rather than multiple signals or complex data structures. This minimal storage requirement enables immediate display functionality while keeping the added device complexity to a minimum, storing just enough data to fill the boot gap.
Data Source
AI summary
A video signal processing apparatus (202) for transmitting a video signal when the apparatus (202) is powered on. The video signal is one of a first video signal (CLK1, DATA1) and a second video signal (CLK2, DATA2). The first video signal comprises a first video clock (CLK1) and first video data (DATA1), and the second video signal comprises a second video clock (CLK2) and second video data (DATA2). The apparatus (202) is arranged to detect at an input of the apparatus (202) a presence or an absence of the first video signal, transmit the first video signal to an output of the apparatus (202) when the first video signal is detected, and transmit the second video signal to the output of the apparatus (202) when the first video signal is not detected, the second video signal being already stored in a memory (204) of the apparatus (202).