Dual Processor Display Apparatus Parallel Initialization
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Solution Overview
Problem
Existing display apparatuses take time to start displaying video after power activation due to the need for the entire control processor to activate before the video-processing system processor can begin processing, leading to delays in video display.
Innovation Solution
A display apparatus configuration with a first processor that executes an operating system and a second processor operating in parallel, where the second processor controls the light source and modulation device based on control data transmitted from the first processor before the operating system is activated, allowing for simultaneous operations that reduce the time to display video.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire control processor activates the operating system before the video-processing system processor can begin processing, then the system operation is simplified and reliable, but the time until video display starts increases
Solution Approach 1:
The processor is divided into two independent processors: a first processor that executes the operating system and a second processor that controls the light source and modulation device. This segmentation allows both processors to operate simultaneously without waiting for the other to complete initialization, thereby reducing the time until video display starts while maintaining system reliability through coordinated control.
Solution Approach 2:
The second processor performs preliminary actions by controlling the light source and modulation device before the first processor completes the operating system activation. The second processor reads required parameters from the storage unit in advance and begins preparing the display system, so that when the first processor finishes activating the operating system, the second processor is already ready to display video immediately.
2Productivity
If both processors access the storage unit simultaneously to read control data, then data availability is improved, but the complexity of managing data access and matching increases
Solution Approach 1:
The first processor performs the preliminary action of reading required control data from the storage unit before activating the operating system. This preliminary data acquisition allows the second processor to receive and process the data immediately after activation without requiring complex simultaneous access management mechanisms, thus maintaining simplicity while improving productivity.
Data Source
AI summary
A projector includes a light source portion and a light modulation device which modulates light from the light source portion. The projector includes an entire control processor which controls an operation of the projector by executing an OS, and a video-output system processor which is operated in parallel to the entire control processor and controls a light source of the light source portion and the light modulation device. The projector includes a nonvolatile storage unit which stores control data processed by the video-output system processor. The entire control processor transmits the control data stored in the nonvolatile storage unit to the video-output system processor before activating the OS.