Mouse emulation with a passive pen

Details Mouse emulation with a passive pen Mouse emulation with a passive pen

1997-10-23

2001-07-17

Shalwala, Bipin (Department: 2778)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Stylus

C345S163000, C345S169000, C345S173000, C178S018010

Reexamination Certificate

active

06262719

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a pen-based portable personal computer system and more particularly to a system for emulating the functions of, for example, a two-button mouse, utilizing a passive stylus as an input device.
2. Description of the Prior Art
Pen-based portable personal computer systems are generally known in the art. Such systems typically include a digitizer panel and utilize a stylus as an input device. Both active and oassive stylus' are known. In such pen-based personal computer systems, the path of the stylus is tracked relative to the digitizer panel to maintain the pen paradigm and to provide visual feedback to the user. Such pen-based portable personal computer systems are known to use Microsoft Windows for Pen Computing Systems (“Pen Windows”). When the system is utilizing pen Windows, the pen driver can typically deliver stylus tip locations every 5-10 milliseconds (“100-200 times per second”) to achieve a resolution of about 200 dots per inch (200 dpi) and to connect the dots in a timely manner. As such, the operating systems (i.e. Pen Windows) can provide a real-time response to maintain the pen paradigm.
The object of the pen-based portable personal computer systems is to provide a user with a tool as familiar as a pencil and paper. Unfortunately, the popularity of such pen-based computer systems is a lot less than was expected by the industry. As such, application programs for such pen-based systems are limited.
SUMMARY OF THE INVENTION
It is an object of the present invention to solve various problems in the prior art.
It is yet a further object of the present invention to provide a pen-based portable personal computer system which can emulate all of the functions of a standard mouse.
Briefly, the present invention relates to a pen-based portable personal computer which can emulate the functions of a standard two-button mouse. In particular, the system can emulate standard movement and clicking of a mouse button, as well as emulate both left and right mouse buttons of a two-button mouse. In order to be compatible with various application programs, the system can also emulate the double clicking of the mouse button. By providing a pen-based computer system which can emulate the functions of a standard two-button mouse, the system is compatible with various application programs available on the market.


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