Computer graphics processing and selective visual display system – Display peripheral interface input device – Stylus
Reexamination Certificate
2007-12-18
2007-12-18
Awad, Amr A. (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Stylus
C345S157000
Reexamination Certificate
active
10823748
ABSTRACT:
A handwriting pen used in a tablet type handwriting entry device comprises a pen tip, a pen tip position sensor, and a pressure sensor. The pen tip position recognizer captures a main position coordinates as the pen tip taps on a tablet panel, and generates a main position data. The pressure generator senses a press by the pen tip on the tablet, and generates a pressure value. The handwriting pen connects to a main system by a signal transmission line, and the acquired information is transferred to the main system. The main system has a pen stroke simulation apparatus that manipulates the main position data and the pressure value for simulating different pen strokes.
REFERENCES:
patent: 4878553 (1989-11-01), Yamanami et al.
patent: 5571997 (1996-11-01), Gray et al.
patent: 6067073 (2000-05-01), Rae-Smith et al.
patent: 2005/0275638 (2005-12-01), Kolmykov-Zotov et al.
Ho Liang-Wei
Liu Chen-Duo
Acer Incorporated
Awad Amr A.
Pervan Michael
Pillsbury Winthrop Shaw & Pittman LLP
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