Projector Booting Method Using Authentication Timer
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Solution Overview
Problem
Existing projector technologies fail to prevent unintentional startup, which can cause eye damage from direct projection light, and methods to prevent unauthorized use often result in power wastage as the projector cannot be used during authentication.
Innovation Solution
A projector system comprising a receiver device, storage device, and processor that compares input data with preset data, starts a timer upon authentication, and only turns on the light source if a booting signal is received before the timer expires, ensuring safe and authorized startup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the projector is turned on immediately without authentication, then the operation is convenient and fast, but the projector may be unintentionally started up causing eye damage from projection light
Solution Approach 1:
The patent applies preliminary action by requiring authentication (password input or RFID card swiping) before the projector can be turned on. This pre-confirmation step ensures that only authorized users can start the projector, preventing unintentional startup while maintaining safe operation. The authentication process must be completed before the power button becomes effective, eliminating the risk of accidental activation.
2Reliability
If authentication is required before startup, then unauthorized use is prevented, but the projector cannot be used during authentication causing power wastage
Solution Approach 1:
The patent applies dynamics by making the power button's functionality conditional rather than static. The power button only becomes effective after successful authentication is completed. Before authentication, the power button is inactive or ignored. This dynamic behavior ensures that power is not wasted during authentication attempts, as the system remains in a low-power state until authorization is confirmed.
3Object-affected harmful factors
If the power button is locked or remote control is disabled to prevent unintentional startup, then safety is improved, but the operation becomes less convenient
Solution Approach 1:
The patent introduces an intermediary authentication mechanism (password input through OSD menu or RFID card swiping) that mediates between the user and the power button. Instead of directly locking the power button or disabling remote control, the system requires this intermediate authentication step. Once authenticated, the power button becomes fully functional. This intermediary approach prevents unintentional startup while maintaining convenient operation for authorized users.
Data Source
AI summary
The disclosure proposes a projector and a projector booting method. The projector includes a receiver device, a storage device, and a processor, which is coupled to the receiver device and the storage device. The receiver device receives an input data. The processor is used for comparing the input data with a preset data in the storage device. The processor starts a timer after determining that the input data matches the preset data. The processor transmits a light source driving signal to a light source actuator to turn on a light source when the processor receives a booting signal before the timer expires. The disclosure can prevent the projector from being unintentionally turned on.