Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
1999-03-18
2001-09-25
Saras, Steven (Department: 2675)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
Reexamination Certificate
active
06295050
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an apparatus for controlling the movement of a graphical element on a computer display monitor that is engaged with a keyboard assembly and provides improved control over movement of the graphical element.
2. Description of the Related Art
Current computer keyboards, especially those provided with a laptop computer, sometimes include a pointing device embedded between the keys of the keyboard. This pointing device typically looks and feels like an eraser.
FIG. 1
illustrates this eraser style pointing device
2
embedded between keyboard keys
4
.
FIG. 1
also shows lateral views, referenced as
6
a
and
6
b
, of the eraser-style pointing device with respect to the keyboard keys. The user may control the eraser pointing device
2
with a fingertip, usually the forefinger, to move the eraser pointing device in directions along the X-Y plane to control the movement of a cursor or other graphical element displayed in a graphical user interface (GUI) on a computer display monitor. The eraser pointing device
2
remains relatively stationary when the user applies pressure in different directions. One example of the eraser pointing device is the International Business Machine Corporation (“IBM”) TrackPoint in-keyboard pointing device.
Such eraser pointing devices
2
are particularly advantageous because they fit into a laptop computer keyboard and provide the user mouse-like control within the keyboard area. In the prior art, the height of such eraser pointing devices
2
extends to the height of the keys on the keyboard or only very slightly above the keys, such as by an eighth of an inch or less. Prior art eraser pointing devices
2
are shaped as a button as shown in FIG.
1
. The height and shape of the eraser type pointer device is designed to insure that the eraser pointing device
2
will not puncture or damage the LCD display screen of a laptop computer when the display screen cover is shut closed and positioned flush with the keyboard and eraser pointing device
2
. Examples of eraser pointing devices such as the device shown in
FIG. 1
are described in the following U.S. patents, all of which are incorporated herein by reference in their entirety: U.S. Pat. No. 5,701,142, entitled “Pointing Stick with Tripod Actuator for Cursor Control in a Computer Keyboard;” U.S. Pat. No. 5,568,987, entitled “Pointing Stick in a Computer Keyboard for Cursor Control;” and the commonly assigned U.S. Pat. No. 5,870,082, entitled “Pointing Device With Reciprocating Grip Cap.”
One problem with the current eraser style pointing devices is that users have limited control over movement in the X-Y plane. This limitation in movement is especially problematic when playing computer video games. Computer games such as flight simulators and other action games typically require quick, accurate user movements. The eraser style pointing devices do not provide the user the desired level of control over cursor or game element movement in the X-Y plane to adequately interact in the computer gaming environment.
There is thus a need in the art for a pointing device suitable for being embedded in a keyboard and particularly suited for laptop use to provide users greater control over the movement of cursors and other displayed graphical elements.
SUMMARY OF THE PREFERRED EMBODIMENTS
To provide an improved pointing device structure, preferred embodiments disclose a pointer assembly apparatus in communication with sensor electronics embedded within a keyboard assembly to sense mechanical movement. The sensor electronics communicates electrical signals indicating direction of movement to a computer system which controls the movement of a graphical element displayed on a display monitor attached to the computer. The pointer assembly comprises an extended member coupled to the sensor electronics that extends at least approximately one-half of an inch away from a horizontal surface of the keyboard assembly. With this structure, the user may grip the extended member between two finger tips.
In further embodiments, the keyboard assembly includes a shaft member disposed within the keyboard assembly and coupled to the sensor electronics at one end. An engagement end of the extended member is engaged to the shaft member. The shaft member communicates mechanical movement from the extended member to the sensor electronics.
In embodiments where the computer system is a laptop computer and the display monitor is a laptop screen, a polymer forming the extended member may be designed to deform in response to stress from the laptop screen being closed shut onto the extended member and to return to an original shape after the stress is removed. In still further laptop computer embodiments, the extended member may be formed of a brittle polymer portion and subject to shattering in response to stress resulting from the laptop screen being closed shut onto the extended member. These two structures would substantially reduce the likelihood that inadvertently shutting the laptop cover onto the extended member would damage the laptop display screen.
Preferred embodiments further provide a user increased leverage and improved control over movement of a cursor or other graphical display than that provided by eraser-style pointing devices typically used with laptop computers.
REFERENCES:
patent: 4395134 (1983-07-01), Luce
patent: 4825019 (1989-04-01), Fisher
patent: 4945357 (1990-07-01), Tal
patent: 5521596 (1996-05-01), Selker et al.
patent: 5532476 (1996-07-01), Mikan
patent: 5568987 (1996-10-01), Franz
patent: 5594618 (1997-01-01), Sellers
patent: 5615083 (1997-03-01), Burnett
patent: 5640178 (1997-06-01), Endo et al.
patent: 5659334 (1997-08-01), Yaniger et al.
patent: 5701142 (1997-12-01), Brown et al.
patent: 5708562 (1998-01-01), Agata et al.
patent: 5786806 (1998-07-01), Fester
patent: 5831596 (1998-11-01), Marshall et al.
patent: 5870082 (1999-02-01), Selker et al.
patent: 5889507 (1999-03-01), Engle et al.
patent: 5889508 (1999-03-01), Slotta
patent: 5949404 (1999-09-01), Zabel
patent: 5966117 (1999-10-01), Seffernick et al.
patent: 6002388 (1999-12-01), Seffernick et al.
patent: 6040823 (2000-03-01), Seffernick et al.
patent: 6059660 (2000-05-01), Takada et al.
patent: 6107993 (2000-08-01), Devolpi
Mini-joystick: An Integrated Terminal Key Combination, IBM Technical Disclosure Bulletin, Sep. 1991, V34 pp. 440-444.*
Telescopic Joystick, IBM Technical Disclosure Bulletin, Apr. 1989, V31 pp. 288-289.
Bell Paul A.
International Business Machines - Corporation
Konrad Raynes & Victor LLP
Saras Steven
Victor David W.
LandOfFree
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