Projector Indicator Detection and Wireless Tag Transmission

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Solution Overview

Problem

Current projector systems require users to input information, such as email addresses and authentication details, manually or through remote controllers, which is time-consuming and inefficient, especially in settings like meetings or lessons.

Innovation Solution

A projector system that includes a projection unit, detection unit, storage unit, acquisition unit via a wireless reader/writer, communication unit, and transmission unit, allowing users to input a transmission destination by detecting an indicator's position on a projection surface and acquiring information via an RFID reader/writer, enabling easy transmission of hand-drawn images to specified email addresses while ensuring security through encryption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If users input transmission destination information manually or through remote controller, then the projector can transmit images, but it takes time and effort to input information

Engineering Contradiction:

Improveease of inputting transmission destinationVSAvoidtime to input information

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The system allows the projector to automatically acquire transmission destination information by detecting the indicator's position and reading data from wireless tags in the environment, eliminating the need for manual user input. The projector serves itself by autonomously obtaining the necessary transmission information.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces the mechanical input method (manual typing or remote controller operation) with an automated detection and wireless communication system. The projector uses indicator position detection and wireless tag reading to automatically acquire transmission destination information, substituting manual mechanical input with automated electronic detection.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If transmission destination information is stored in non-volatile storage area, then information is retained, but security risk increases from potential leakage

Engineering Contradiction:

Improveinformation retentionVSAvoidsecurity risk of information leakage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the storage parameter from non-volatile to volatile storage, transforming the persistence characteristic of the data. This parameter change allows the information to be retained during the transmission process but automatically erased afterward, achieving both reliability for the current operation and security against future leakage risks.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system uses volatile storage that automatically erases transmission destination information after use, similar to a disposable object that serves its purpose and then is discarded. This ensures the information exists only when needed and cannot be retrieved later, preventing security leaks while maintaining functional reliability.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Productivity

If image is transmitted without encryption, then transmission is fast and simple, but security is compromised allowing surreptitious viewing

Engineering Contradiction:

Improvetransmission speedVSAvoidunauthorized access to image

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system performs encryption on the image data before transmission, preparing the data in advance with protective measures. This preliminary encryption action ensures that even if the transmission takes slightly longer, the security is maintained throughout the entire transmission process, preventing unauthorized viewing.

Inventive Principle:

Principle #10Preliminary action

4Adaptability or versatility

If multiple transmission destinations are supported, then versatility increases, but complexity of input process increases

Engineering Contradiction:

Improvenumber of transmission destinationsVSAvoidcomplexity of input process

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The projector automatically detects multiple wireless tags in the environment and acquires transmission destination information for each tag without requiring manual input. This self-service approach enables multi-destination transmission capability while keeping the input process simple, as the system autonomously handles the complexity of managing multiple destinations.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10356586B2Projector and control method

Publication Date: 2019.07.16 SEIKO EPSON CORP

AI summary

A projector includes: a projection unit which projects a first image onto a projection surface; a detection unit which detects a position of an indicator on the projection surface; a first storage unit which stores a second image including a figure drawn according to the position of the indicator; an acquisition unit which acquires information for specifying a transmission destination of the second image via a wireless reader/writer; a communication unit which communicates via a network; and a transmission unit which transmits the second image via the communication unit to the transmission destination specified by the information acquired by the acquisition unit.