Method of generating key code in coordinate recognition device and video device controller using the same
First Claim
1. A method of generating a key code in a video device controller having a touch pad, the method comprising:
- recognizing coordinate values corresponding to a touch trajectory executed with respect to the touch pad;
calculating at least one of a direction, speed, or distance of the touch trajectory using the recognized coordinate values; and
generating a movement command signal corresponding to the calculated values, the generated movement command signal corresponding to a key code output to control a video device by shifting an object displayed on the video device,wherein generating the command signal comprises;
assigning a x-axis and a y-axis to an area of the touch pad,dividing the touch pad area along the x-axis into an upper y-axis area and a lower y-axis area,reconfiguring the touch pad area for point-for-point symmetry between the upper and lower y-axis areas, andcentering vertically on a maximum x-coordinate point of the touch pad area, to thereby reposition coordinates of the lower y-axis area, wherein the direction and speed of the touch trajectory are calculated using the repositioned x-axis coordinates, andwherein the x-axis coordinate of the repositioned lower y-axis area is expressed by
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Abstract
A video device controller and method for generating a key code enable key code generation by a single instance of manipulation of the controller by a user, obviating repetitive keypad manipulation and thereby facilitating controller operation. The video device controller includes a touch pad (110), a coordinate recognition unit (120) for recognizing coordinate values corresponding to a touch trajectory executed with respect to the touch pad (110), a key signal input unit (120), having a plurality of keys, for generating a key signal according to a user selection of at least one of the keys; a system controller (140) for calculating values of at least one of a direction, speed, and distance of the touch trajectory using the recognized coordinate values and for outputting a movement command signal based on the calculated values and the key signal, the movement command signal shifting an object displayed on the video device; and a key code generator (150) for generating a key code corresponding to the movement command signal. The touch pad (110) is preferably imparted with a predetermined pattern enabling a touch trajectory to be recognized in a simple manner.
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Citations
19 Claims
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1. A method of generating a key code in a video device controller having a touch pad, the method comprising:
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recognizing coordinate values corresponding to a touch trajectory executed with respect to the touch pad; calculating at least one of a direction, speed, or distance of the touch trajectory using the recognized coordinate values; and generating a movement command signal corresponding to the calculated values, the generated movement command signal corresponding to a key code output to control a video device by shifting an object displayed on the video device, wherein generating the command signal comprises; assigning a x-axis and a y-axis to an area of the touch pad, dividing the touch pad area along the x-axis into an upper y-axis area and a lower y-axis area, reconfiguring the touch pad area for point-for-point symmetry between the upper and lower y-axis areas, and centering vertically on a maximum x-coordinate point of the touch pad area, to thereby reposition coordinates of the lower y-axis area, wherein the direction and speed of the touch trajectory are calculated using the repositioned x-axis coordinates, and wherein the x-axis coordinate of the repositioned lower y-axis area is expressed by - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification