Projector Dual Processor Startup Delay

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Solution Overview

Problem

Conventional projectors with dual processors face delays in lighting the light source lamp after power activation, as the video-output system processor relies on parameters from the entire control processor, leading to prolonged startup times, especially when using solid light sources like lasers or LEDs.

Innovation Solution

A projector design featuring a first processor for overall control and a second processor for light source control, with a storage unit storing parameters for the second processor, allowing it to initiate light source control independently upon activation, reducing the need for parameter transfer from the first processor and enabling quicker startup.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the video-output system processor waits to receive parameters from the entire control processor before controlling the light source, then integrated control and parameter consistency are ensured, but the startup time to light the light source is prolonged

Engineering Contradiction:

Improvecontrol consistencyVSAvoidstartup time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The storage unit stores light source control parameters in advance, prepared before the video-output system processor needs them. When the processor is activated, it can immediately read the pre-stored parameters without waiting for transmission from the entire control processor, thus reducing startup time while ensuring parameter consistency through the pre-stored values.

Inventive Principle:

Principle #10Preliminary action

2Use of energy by moving object

If the second processor remains in a reset state until activation, then power consumption is reduced, but the response time to light the light source increases

Engineering Contradiction:

Improvepower consumptionVSAvoidresponse time

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The storage unit prepares and stores the necessary light source control parameters in advance, so when the second processor is activated from the reset state, it can immediately access these pre-stored parameters and control the light source without delay. This eliminates the need for the processor to remain continuously powered while maintaining fast response capability.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If parameters are stored in a storage unit accessible to the second processor, then the light source can be controlled independently and quickly, but the system complexity increases

Engineering Contradiction:

Improvelight source control speedVSAvoidsystem structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The storage unit that stores light source control parameters is integrated into the existing system architecture, combining the parameter storage function with the control system. This merging approach allows the second processor to access parameters independently and quickly without adding significant system complexity, as the storage unit serves multiple purposes within the projector system.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10080003B2Projector and method for controlling the same

Publication Date: 2018.09.18 SEIKO EPSON CORP

AI summary

A projector includes: a first processor that controls the projector; a second processor that controls the light source; and a storage unit that stores parameters for the second processor to control the light source. The second processor starts to control the light source based on the parameters stored in the storage unit when activated. When the parameters are changed, the first processor stores the changed parameters in the storage unit.