Human interface device

1 . A human interface device (HID), comprising:

a touch panel having a first setting region that has a first length (D 1 ), wherein the touch panel defines a second setting region in the first setting region, and the second setting region has a second length (D 2 ) that is less than the first length; and

a processing module electrically coupled to the touch panel and including:

a coordinate detection mechanism defining a first longitudinal coordinate axis that has a first minimum coordinate (X 1-min ), a first central coordinate (X 1-central ), and a first maximum coordinate (X 1-max ), and wherein the first minimum coordinate and the first maximum coordinate have a distance therebetween mapping to the first length of the first setting region, and the first central coordinate is an average value of the first minimum coordinate and the first maximum coordinate; and

a coordinate conversion mechanism defining a second longitudinal coordinate axis that has a second minimum coordinate (X 2-min ), a second central coordinate (X 2-central ), and a second maximum coordinate (X 2-max ), wherein the second minimum coordinate and the second maximum coordinate have a distance therebetween mapping to the second length of the second setting region, and the second central coordinate is defined to be same as the first central coordinate, and wherein the second minimum coordinate (X 2-min ) and the second maximum coordinate (X 2-max ) respectively satisfy two equations of:

X

2

-

min

=

(

X

1

-

max

-

D

2

)

/

2

;

and

X

2

-

max

=

(

X

1

-

max

+

D

2

)

/

2

;

wherein the processing module is configured to control the touch panel to selectively operate the first setting region in a first touch mode or the second setting region in a second touch mode;

wherein the coordinate detection mechanism is configured to detect a touch coordinate of the touch panel corresponding to the first longitudinal coordinate axis, and wherein, when the touch panel is in the second touch mode, a touch point of the touch panel is detected and defined as a first longitudinal coordinate (X 1 ) of the first longitudinal coordinate axis by the coordinate detection mechanism, and the coordinate conversion mechanism converts the first longitudinal coordinate to a second longitudinal coordinate (X 2 ) of the second longitudinal coordinate axis.

2 . The HID according to claim 1 , wherein a top edge and a bottom edge of the second setting region are respectively overlapped with a top edge and a bottom edge of the first setting region, and a width of the second setting region is identical to a width of the first setting region.

3 . The HID according to claim 1 , wherein the first setting region defines a first left button and a first right button respectively mapping to two opposite sides of the first central coordinate, and the second setting region defines a second left button and a second right button respectively mapping to two opposite sides of the second central coordinate.

4 . The HID according to claim 3 , wherein a bottom of the first left button and a bottom of the first right button are overlapped with a bottom edge of the first setting region, and a bottom of the second left button and a bottom of the second right button are overlapped with a bottom edge of the second setting region.

5 . The HID according to claim 1 , wherein an area of the second setting region is within a range from 30% to 90% of an area of the first setting region.

6 . The HID according to claim 1 , wherein a left edge of the second setting region is overlapped with a left edge of the first setting region, and the second longitudinal coordinate is a sum of the first longitudinal coordinate and the second minimum coordinate (X 2 =X 1 +X 2-min ).

7 . The HID according to claim 1 , wherein the touch panel defines at least one additional region that is located in the first setting region and that is arranged outside of the second setting region, and wherein, when the touch panel is in the second touch mode, the at least one additional region has an additional touch function that is different from a touch function of the second setting region.

8 . The HID according to claim 1 , wherein the touch panel defines at least one additional region that is located in the first setting region and that is arranged outside of the second setting region, and wherein, when the touch panel is in the second touch mode, the at least one additional region has no touch function.

9 . The HID according to claim 1 , further comprising a housing that has an opening, wherein the touch panel and the processing module are assembled in the housing, the first setting region of the touch panel is exposed from the opening, and an area of the first setting region is substantially equal to an area of the opening.

10 . The HID according to claim 9 , further comprising a display that is electrically coupled to the processing module, wherein, when the touch panel is in the second touch mode, the second setting region is operable to control a movement of a cursor of the display.

11 . The HID according to claim 1 , wherein the touch panel has a first dots per inch (DPI) in the first control mode and a second DPI in the second touch mode, and the first DPI is equal to the second DPI.