Electronic blackboard apparatus

Telegraphy – Systems – Position coordinate determination for writing

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G08C 2100

Patent

active

047119772

ABSTRACT:
An electronic blackboard apparatus comprises an electronic blackboard unit, a writing instrument, a position-detecting control unit, and an output section. When video information such as characters and figures is depicted on a writing surface by means of the writing instrument, a magnetic bias with a locus corresponding to the video information is simultaneously applied to a position-detecting tablet of the electronic blackboard unit. Position coordinates thereof are computed by the position-detecting control unit and converted into electric signals. Similarly, when the video information on the writing surface is erased by means of the eraser, a magnetic bias with a locus corresponding to the erased video informaton is simultaneously applied to the position-detecting tablet. Position coordinates thereof are calculated by the position-detecting control unit and converted into electric signals. On the basis of these electric signals, the video information on the writing surface is output from the output section as a hard-copy image or as a display image.

REFERENCES:
patent: 3761620 (1973-09-01), Graven
patent: 4634973 (1987-01-01), Murakami

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electronic blackboard apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic blackboard apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic blackboard apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-23391

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.