Electronic Pen Standby Mode Control via Infrared Signaling
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Solution Overview
Problem
Current projector systems require users to operate a remote control device separately from an electronic pen to cancel the projector's standby mode, reducing usability and user-friendliness.
Innovation Solution
An electronic pen with a communication unit, state detection unit, and control unit that switches between a pointing element signal and a control signal based on its state relative to the projector, allowing the pen to emit infrared light patterns to synchronize with the projector in normal mode or cancel standby mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the projector enters standby mode to reduce power consumption, then energy efficiency is improved, but the user cannot control the projector using the electronic pen, reducing ease of operation
Solution Approach 1:
The electronic pen is designed to perform multiple functions: it serves as both a pointing element for interaction with projection images and a remote control device for controlling projector operations including standby mode cancellation. The communication unit in the electronic pen can transmit different types of signals (pointing element signals with light emission patterns and control signals) to interact with the projector in various modes, making the pen a universal control device that works whether the projector is in normal operation or standby mode.
2Reliability
If a separate remote control device is used to cancel standby mode, then control functionality is maintained, but device complexity increases and ease of operation decreases
Solution Approach 1:
The patent merges the functions of the electronic pen and remote control device into a single device. The electronic pen incorporates a communication unit that can transmit both pointing element signals (with light emission patterns detected by the position detection device) and control signals (detected by a separate communication receiving device in the projector). This consolidation eliminates the need for a separate remote control device, reducing system complexity while maintaining full control functionality including the ability to cancel standby mode.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables users to remotely control the projector using the electronic pen, improving system usability by eliminating the need for a separate remote control device during standby mode cancellation.
Implementation Method 1
the electronic pen 10 emits infrared light with a light emission pattern giving an instruction to cancel the standby mode of the projector 100
Data Source
AI summary
An electronic pen includes: a communication unit which communicates with a communication target apparatus; a state detection unit which detects a state of the electronic pen decided by a relation with the communication target apparatus; and a control unit which changes an operation of the communication unit according to the state detected by the state detection unit.