Data compression in digitizing tablet

Details Data compression in digitizing tablet Data compression in digitizing tablet

1994-12-21

1997-09-16

Chan, Wing F.

Telegraphy

Systems

Position coordinate determination for writing

345179, 382233, G08C 2100

Patent

active

056683529

ABSTRACT:
The invention concerns storage of correction tables for digitizing tablets. A digitizing tablet produces data indicative of position of a stylus. The data does not, in general, exactly indicate the position; errors exist. For example, a tablet may produce a data pair indicating a Cartesian position of (5.0, 6.0) when the position is actually (4.9, 6.1). Correction tables are used to correct the errors. These tables may be viewed as containing correct data for each possible pair of data produced by the tablet. Thus, in this example, a user would (a) receive (5.0, 6.0) from the tablet, (b) look up this data in the table, and (c) find that the actual position which corresponds to this data is (4.9, 6.1). The invention concerns compression of such tables, to reduce storage space.

REFERENCES:
patent: 4241412 (1980-12-01), Swain
patent: 4550438 (1985-10-01), Convis et al.
patent: 4650926 (1987-03-01), Nakamura et al.
patent: 4707572 (1987-11-01), Kable et al.
patent: 4963703 (1990-10-01), Phillips et al.
patent: 5025314 (1991-06-01), Tang et al.
patent: 5194852 (1993-03-01), More et al.
patent: 5287420 (1994-02-01), Barrett
patent: 5491634 (1996-02-01), Miller et al.

Affiliated with

Also associated with

Rating

Data compression in digitizing tablet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data compression in digitizing tablet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data compression in digitizing tablet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-220299