Flexible and portable multiple passive writing instruments detection system
First Claim
1. An invented system which includes (1) image sensors, (2) mirrors, (3) writing instruments, (4) Specially designed light shades, (5) Filters including IR filters, (6) batteries, (7) electronics (8) specially designed rods holders, (9) mirror holders, (10) rods (11) hooks, (12) Light sub-system, (13) Laser pointer sub-system, (14) Specially designed passive label/object as additional to the writing instruments, (15) Serial communication with other electronics systems including USB, LAN, regular serial communication like RS232. The invented system works as either a fixed digitizer system with a writing area or a portable system to work with any writing area and/or instruments. The invented system is flexible and adjustable to match with any existing writing area of any size and shape or part of the existing writing area, for example:
- existing whiteboard in class room or conference room in business. See FIG. 1 to FIG. 2. The invented system works effectively with any projector screen by using any pen a-like writing instruments including laser pointer and laser pointer light beam. For example;
finger, chopstick, stick, pen etc. The invented system works with a computer system and projector or special designed smart projector which has communication capability. This new invented system solves the traditional “
Impossible writing on traditional projection screen”
issue as well as identification of multiple passive writing instruments. See FIG. 11. The image sensors are refer to any image sensors with adjustable optical lens assembly, including color camera, black and white camera, IR camera, CMOS camera, CCD camera, thermo imaging sensor, but not limited to above listed. The system uses dynamic exposure and shutter control of image sensors to work with different light conditions for the best image pickup result. Image information is passed to the electronics for processing and transfer to other system internally and/or externally.
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Accused Products
Abstract
A system, method and apparatus for converting writing on surface to digital signal for further processing. A specially designed object which is a very cost effective passive method, helps to identify true multiple passive writing instruments writing at the same time, and can works with most passive writing instruments including human finger, pen, stick, chopstick, laser pointer and any pen a-like objects as well as regular pens. Laser pointer light beam can be identified as a writing instrument and can function similarly as a mouse function or other functions. A reflection mirrors system makes the system flexible and adjustable to work with any existing writing area at any size and can be a true portable system. An additional light sub-system enhances the captured image at any ambient light condition. A laser sub-system helps for easier installation and setup.
1 Citation
12 Claims
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1. An invented system which includes (1) image sensors, (2) mirrors, (3) writing instruments, (4) Specially designed light shades, (5) Filters including IR filters, (6) batteries, (7) electronics (8) specially designed rods holders, (9) mirror holders, (10) rods (11) hooks, (12) Light sub-system, (13) Laser pointer sub-system, (14) Specially designed passive label/object as additional to the writing instruments, (15) Serial communication with other electronics systems including USB, LAN, regular serial communication like RS232. The invented system works as either a fixed digitizer system with a writing area or a portable system to work with any writing area and/or instruments. The invented system is flexible and adjustable to match with any existing writing area of any size and shape or part of the existing writing area, for example:
- existing whiteboard in class room or conference room in business. See
FIG. 1 toFIG. 2 . The invented system works effectively with any projector screen by using any pen a-like writing instruments including laser pointer and laser pointer light beam. For example;
finger, chopstick, stick, pen etc. The invented system works with a computer system and projector or special designed smart projector which has communication capability. This new invented system solves the traditional “
Impossible writing on traditional projection screen”
issue as well as identification of multiple passive writing instruments. SeeFIG. 11 . The image sensors are refer to any image sensors with adjustable optical lens assembly, including color camera, black and white camera, IR camera, CMOS camera, CCD camera, thermo imaging sensor, but not limited to above listed. The system uses dynamic exposure and shutter control of image sensors to work with different light conditions for the best image pickup result. Image information is passed to the electronics for processing and transfer to other system internally and/or externally. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- existing whiteboard in class room or conference room in business. See
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2. The specially designed light shades and filters including IR filters are installed in front of the image sensors. The specially designed light shade are used to block direct ambient light to the image sensors. The shades have special shape to allow the image sensors look toward the writing surface easily. Different shape and/or additional adaptors can be added to the original shades to change the blocking characteristic to meet different purposes if necessary. See
FIG. 2 . The specially designed filters are IR filters as well as other filters, are used to enhance image pick up and are more sensitive to particular wave length of light for the purpose of writing instruments identification. The light shade, mirrors, rods, filters etc. and image sensors can be positioned in the case at any location and faced to different directions to match with the writing area monitor need but not just the locations and directions as shown in diagrams.
Specification