Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
1999-07-23
2001-10-09
Shalwala, Bipin (Department: 2673)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S163000
Reexamination Certificate
active
06300942
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an improved structure of a shield used in a mouse, and, more particularly to an improved structure of a shield used in a mouse with a design of a shield which is formed by integration for reducing the production cost and composition cost, and for decreasing times of inserting slotting attachments.
BACKGROUND OF THE INVENTION
The mouse is an important periphery instrument of the computer, and, normally, the positioning pointer of the mouse is using the semi-optical type. As shown in
FIG. 1
, the structure of the ordinary mouse
10
uses the trackball
11
as the sliding and moving element. One smooth roller
12
of one pivot axle
121
is located in the longitudinal direction of the trackball
11
, the other smooth roller
12
of the other pivot axle
121
is located in the latitudinal directions of the trackball
11
, and a plurality of toothed wheels
122
are located around peripheries of the two smooth roller
12
. There is a distance
123
between two toothed wheels
122
, and there are a receiver
21
and a emitter
22
(such as the photo diode and the light emitting diode) respectively located on the circuit board
20
corresponding to both sides of the toothed wheel
122
. The trackball
11
slides and moves to make the two pivot axles
121
rotate, and the two rotating pivot axles
121
would make the smooth roller
12
rotate between the receiver
21
and the emitter
22
. However, while a light generated from the emitter
22
is incident to a position of the toothed wheel
122
, the light would be shielded and the receiver
21
can not receive any light. While the light is incident to the distance
123
between two toothed wheels
122
, the receiver
22
can easily receive the light. By shielding and receiving the light, the low level of the signal and the high level of the signal are formed to produce the corresponding coordinate signals of the X and Y axes of the monitor to make the pointer of the mouse
10
on the monitor move with motions of the mouse
10
according to coordinate signals.
However, during the assembly processes of the mouse
10
, the all part including electrical elements and opto-electronics of the circuit board
20
are manually inserted, and the total number of the opto-electronics of the aforesaid X and Y axes are four, two for emitter
22
and two for receiver
21
. That is, the operator would manually insert the opto-electronics four times, and each one should be inserted in the same angle to make the receiving path and the generating path uniform. However, by using the manually inserted method in enormously producing products the yield is lower and the sensibility of the mouse is degrading. Thus, the coupled way composed by the emitter and the receiver in the real manufacturing line would increase the production hours of product, make the composition of the mouse more difficult, and degrade the yield, so there are improvements needed to improve the aforesaid problems.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide an improved structure of a shield used in the mouse with a emitting part and a receiving part which are formed by integration and arranged linearly to form the reflecting composite device for the mouse to make the manual work for inserting the reflecting composite device into the circuit board of the mouse be done by just one action of composition to avoid the time of actions of repeatedly inserting emitter and receiver into the circuit board and to reduce the production cost.
REFERENCES:
patent: 5168268 (1992-12-01), Levy
patent: 5311209 (1994-05-01), Lin
patent: 5345253 (1994-09-01), Chang
patent: 6111563 (2000-08-01), Hines
patent: 6172358 (2001-01-01), Ho
Chin Kay
Liang Andrew
Dougherty & Troxell
Lewis David L
Shalwala Bipin
Unity Opto Technology Co., Ltd.
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