Input device having the function of recognizing hybrid coordinates and operating method of the same
First Claim
1. A method of recognizing coordinates using a hybrid coordinate recognition input device in which a variety of commands, characters, and diagrams are input and stored or output, the input device including:
- a hybrid coordinate sensing unit for obtaining the absolute coordinates with respect to position of the input device, and obtaining relative coordinates by sensing an amount of relative movement with respect to a moving track; and
a coordinate calculation unit for obtaining the absolute coordinates and the relative coordinates and converting the obtained relative coordinates into converted absolute coordinates;
the method comprising;
recognizing the relative coordinates the instant the input device is turned on;
if an absolute coordinate sensing switch means operates in the process of recognizing the relative coordinates, obtaining the absolute coordinates at predetermined time intervals and if the absolute coordinate sensing switch means does not operate, obtaining only the relative coordinates; and
calculating the converted absolute coordinates by using the obtained said absolute coordinates, converting the relative coordinate information into the converted absolute coordinates;
wherein the relative coordinates are at least one selected among relative coordinates recognized before obtaining absolute coordinates, relative coordinates recognized at the instant the absolute coordinates are obtained, and relative coordinates recognized after obtaining the absolute coordinates; and
wherein in the converting of the relative coordinates, the relative coordinates are converted into the converted absolute coordinates by using the following equation;
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Abstract
The present invention relates a coordinate input device to input a variety of job commands, diagrams or characters, and to store or output the input data. More particularly, the present invention provides an input device for recognizing hybrid coordinates and a method of operating the device. The input device uses an absolute coordinate recognition method and a relative coordinate recognition method in a combined fashion as a coordinate recognition method for inputting the track of the characters or diagrams. By doing so, input coordinates are converted into absolute coordinates, and the tracks of handwritten characters and diagrams are stored as the converted absolute coordinates such that the tracks are displayed on a display of the input device or on a monitor of an information terminal connected to the input device. Accordingly, problems of respective conventional input devices for recognizing coordinates can be solved, the structure of hardware can be simplified, and characters or diagrams can be input with accurate recognition of coordinates.
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Citations
18 Claims
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1. A method of recognizing coordinates using a hybrid coordinate recognition input device in which a variety of commands, characters, and diagrams are input and stored or output, the input device including:
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a hybrid coordinate sensing unit for obtaining the absolute coordinates with respect to position of the input device, and obtaining relative coordinates by sensing an amount of relative movement with respect to a moving track; and a coordinate calculation unit for obtaining the absolute coordinates and the relative coordinates and converting the obtained relative coordinates into converted absolute coordinates; the method comprising; recognizing the relative coordinates the instant the input device is turned on; if an absolute coordinate sensing switch means operates in the process of recognizing the relative coordinates, obtaining the absolute coordinates at predetermined time intervals and if the absolute coordinate sensing switch means does not operate, obtaining only the relative coordinates; and calculating the converted absolute coordinates by using the obtained said absolute coordinates, converting the relative coordinate information into the converted absolute coordinates; wherein the relative coordinates are at least one selected among relative coordinates recognized before obtaining absolute coordinates, relative coordinates recognized at the instant the absolute coordinates are obtained, and relative coordinates recognized after obtaining the absolute coordinates; and wherein in the converting of the relative coordinates, the relative coordinates are converted into the converted absolute coordinates by using the following equation; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of recognizing the coordinates using a hybrid coordinate recognition input device having a relative coordinate sensing unit and an absolute coordinate sensing unit, wherein if the absolute coordinate sensing unit does not work, the track of the input device is obtained by using only relative coordinates recognized by the relative coordinate sensing unit, said method comprising converting of the relative coordinates into converted absolute coordinates by using the following equation:
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15. A method or recognizing coordinates using a hybrid coordinate recognition input device which is connected to an information terminal to input a variety of commands and handwritten characters, or diagrams by using a cursor displayed on a monitor, the input device including:
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a hybrid coordinate sensing unit for obtaining absolute coordinates by using an image of a microcode printed on pattern paper, and obtaining relative coordinates by sensing an amount of relative movement with respect to a moving track of the input device; a storage unit storing the absolute coordinates and/or the relative coordinates obtained in the hybrid coordinate sensing unit, and a coordinate sensing time; a function key wherein a command is input at a predetermined time; a communication unit transmitting the absolute coordinates and the relative coordinates obtained in the hybrid coordinate sensing unit, and the command input through the function key to the information terminal; a CPU controlling functions of an absolute coordinate sensing unit, a relative coordinate sensing unit, the storage unit, the function key and the communication unit; wherein the converted absolute coordinate are calculated by a coordinate calculation unit embedded in the information terminal from the absolute coordinates transmitted by the communication unit, the relative coordinates are converted in the converted absolute coordinates by using the absolute coordinates, and by using the converted absolute coordinates, a cursor on the monitor is controlled; the method comprising; recognizing the relative coordinates the instant the input device is turned on; if an absolute coordinate sensing switch means operates in the process of recognizing the relative coordinates, obtaining the absolute coordinates at predetermined time intervals and if the absolute coordinate sensing switch means does not operate, obtaining only the relative coordinates; and calculating the converted absolute coordinates by using the obtained said absolute coordinates, converting the relative coordinate information into the converted absolute coordinates; wherein the relative coordinates are at least one selected among relative coordinates recognized before obtaining absolute coordinates, relative coordinates recognized at the instant the absolute coordinates are obtained, and relative coordinates recognized after obtaining the absolute coordinates; and wherein in the converting of the relative coordinates, the relative coordinates are converted into the converted absolute coordinates by using the following equation; - View Dependent Claims (16, 17, 18)
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Specification