COORDINATE INPUT DEVICE

• US 20190332242A1
• Filed: 07/08/2019
• Published: 10/31/2019
• Est. Priority Date: 01/17/2017
• Status: Active Grant

• Current Assignee: Alps Alpine Co., Ltd.
• Original Assignee: Alps Alpine Co., Ltd.
• Inventors: HATANO, Naoyuki, ABE, Shinya, TAKAGI, Masafumi
• Granted Patent: US 10,802,650 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/04186 Touch location disambiguation
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A coordinate input device includes an operation detecting unit for detecting an input operation performed by an operation body and a calculation unit for computing a calculation result from the input operation, wherein, in a case where the input operation detected by the operation detecting unit continues for a predetermined time, the calculation unit acquires a first position coordinate at a first time and a second position coordinate at a second time is detected after the first time, calculates an input vector from the first position and directed toward the second position, calculates a movable distance between an end and another end of the operation detecting unit on a line connecting the first position and the second position, and computing an output vector by increasing a correction value for correcting a value of the input vector so that the shorter the movable distance, the larger the correction value is.

Claims

1. A coordinate input device comprising:

an operation detecting unit configured to detect an input operation performed by an operation body; and

a calculation unit configured to compute a calculation result by calculating the result of the input operation,

wherein, in a case where the input operation detected by the operation detecting unit continues for a predetermined time, the calculation unit

acquires a first position coordinate of a first position at a first time and a second position coordinate of a second position at a second time that is detected after the first time,

calculates an input vector that starts from the first position and directed toward the second position,

calculates a movable distance that is a distance between an end of the operation detecting unit and another end of the operation detecting unit on a line connecting the first position and the second position, and

computing an output vector by increasing a correction value for correcting a value of the input vector so that the shorter the movable distance, the larger the correction value is.

2. The coordinate input device according to claim 1,

wherein the shape of the operation detecting unit is circular, elliptical, or oval with rounded corners.

3. The coordinate input device according to claim 1,

wherein the calculation unit calculates a time between the first time and the second time and a movement speed of the operation body using the amount of movement from the first position coordinate to the second position coordinate, and decreases the correction value when the movement speed is less than or equal to a predetermined threshold value.

4. A coordinate input device comprising:

an operation detecting unit configured to detect an input operation performed by an operation body; and

a calculation unit configured to compute a calculation result by calculating the result of the input operation,

wherein, in a case where the input operation detected by the operation detecting unit continues for a predetermined time,

the calculation unit

acquires a first position coordinate of a first position at a first time and a second position coordinate of a second position at a second time that is detected after the first time,

calculates an input vector that starts from the first position and directed toward the second position,

acquiring a length of a perpendicular line from a line connecting the first position and a second position to a reference point of the operation detecting unit, and

computing an output vector by increasing a correction value for correcting a value of the input vector so that the shorter the movable distance, the larger the correction value is.

5. The coordinate input device according to claim 4,

wherein the shape of the operation detecting unit is circular, elliptical, or oval with rounded corners.

6. The coordinate input device according to claim 4,

wherein the calculation unit calculates a time between the first time and the second time and a movement speed of the operation body using the amount of movement from the first position coordinate to the second position coordinate, and decreases the correction value when the movement speed is less than or equal to a predetermined threshold value.