Intelligent Projector Figure Input Display System
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Solution Overview
Problem
Existing solutions for collaborative handwriting and editing during meetings do not allow simultaneous viewing and effective management of meeting proceedings across multiple attendees, leading to inconvenience and inefficiency in utilizing meeting information for decision-making.
Innovation Solution
A figure input/display apparatus using an intelligent liquid crystal projector and touch-panel-equipped terminals connected via a wireless LAN, allowing simultaneous input and display of line drawings across multiple terminals, with data packets transmitted and redisplayed in real-time to create the illusion of simultaneous writing on a shared whiteboard, while also enabling data storage and replay of meeting proceedings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a whiteboard is used for handwriting input during meetings, then all attendees can simultaneously view the screen, but the whiteboard cannot be viewed during writing and editing operations
Solution Approach 1:
The system creates a digital copy of the whiteboard content that can be viewed separately from the physical whiteboard. The projector displays the digital image data while the whiteboard remains visible, allowing simultaneous viewing of both the writing surface and the meeting proceedings.
Solution Approach 2:
The system adds a new dimension of display by projecting the whiteboard content onto a separate surface (screen or wall). This allows the whiteboard to exist in two dimensions simultaneously: the physical whiteboard for writing and the projected image for viewing, resolving the contradiction between writeability and viewability.
2Adaptability or versatility
If multiple terminals are connected for simultaneous input, then collaborative editing is enabled, but data transmission and synchronization complexity increases
Solution Approach 1:
The system merges the display functions of multiple terminals into a single centralized display (the projector). Instead of each terminal needing its own display and processing capability, all terminals connect to the central projector, simplifying the overall system architecture while maintaining collaborative input capabilities.
Solution Approach 2:
The projector acts as an intermediary device that receives data from multiple terminals and displays the synthesized content. This intermediary role simplifies the data transmission architecture by providing a central hub that manages synchronization and display, reducing the complexity of direct peer-to-peer communication between terminals.
3Speed
If real-time display of handwriting input is implemented, then simultaneous viewing is achieved, but data processing speed requirements increase
Solution Approach 1:
The system performs preliminary actions by continuously monitoring and buffering input data from terminals before projection. The projector is prepared to receive and display data as it arrives, minimizing processing delays and ensuring real-time display of handwriting input without requiring high-speed data transmission.
Data Source
AI summary
Blocking a view of a whiteboard by a position of an attendee writing thereon is prevented, and writing records made by all attendees are stored to use the writing records including a course of the written records later. Each terminal of the attendees has a touch-panel-equipped terminal can divide any input line drawing on the terminal into line segment data, successively transmit the line segment data to the controller, and display line drawing information on the display of the touch-panel-equipped terminal. A liquid crystal projector having a controller that can be embedded therein or connected thereto is provided, the controller can sequentially record line drawing information transmitted from each touch-panel-equipped terminal in a data base, add the line drawing information to a video image memory of the whiteboard, and project the video image memory contents onto a wall surface while transmitting information of the data base to each touch-panel-equipped terminal.