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US 2019/0056759 A1Published application
Joystick and related control method
AssigneePixart Imaging Inc.
InventorsWei-Chung Wang, Hsin-Chia Chen, Hui-Hsuan Chen, Chao-Chien Huang, Chu-Hung Nien
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Abstract
A joystick has a related control method to provide displayed object control function. The joystick includes a body, an image sensor and a processor. The body has a deformable bottom surface whereon a pattern is disposed. The image sensor is disposed under the body and adapted to capture a plurality of frames about the pattern. The processor is electrically connected with the image sensor and adapted to generate a displayed object control signal according to pattern variation within the plurality of frames.
Claims18
1:
- A joystick, comprising:
- a body, having a deformable bottom surface whereon a pattern is disposed;
- an image sensor disposed under the body and adapted to capture a plurality of frames about the pattern;
- and
- a processor electrically connected with the image sensor and adapted to generate a displayed object control signal according to pattern variation within the plurality of frames.
2 more elements
2:
- The joystick of claim 1, wherein the pattern comprises a plurality of dots, the plurality of dots is arranged in asymmetry, and the displayed object control signal is generated according to position variation of the plurality of dots.
3:
- The joystick of claim 1, wherein the pattern is an asymmetric form, the displayed object control signal is generated according to deformation variation of the asymmetric form.
4:
- The joystick of claim 1, wherein the body is a hollow sunken structure, the deformable bottom surface is located on an inner of a top portion of the hollow sunken structure.
5:
- The joystick of claim 1, wherein the body comprises a top portion and a support portion connected with each other, hardness of the top portion whereon the deformable bottom surface is located is greater than hardness of the support portion.
6:
- The joystick of claim 1, further comprising:
- a light source disposed under the body and adapted to project a beam onto the deformable bottom surface.
7:
- The joystick of claim 1, further comprising:
- an opaque cover disposed above the body for shelter.
8:
- The joystick of claim 1, wherein the processor compares continuous frames or compares a current frame with a preset frame to acquire the pattern variation.
9:
- The joystick of claim 1, wherein the displayed object control signal is a cursor control signal.
10:
- The joystick of claim 2, wherein the plurality of dots is made by high-reflective material.
11-17:
- (canceled)
18:
- A control method capable of providing displayed object control function via a deformable bottom surface of a joystick, the control method comprising:
- acquiring a plurality of frames about the deformable bottom surface;
- identifying characteristics of a plurality of dots on the deformable bottom surface;
- and
- generating a displayed object control signal according to characteristics variation of the plurality of dots within the plurality of frames.
2 more elements
19:
- The control method of claim 18, wherein the characteristics variation represents difference between continuous frames.
20:
- The control method of claim 18, wherein the characteristics variation represents difference between a current frame and a preset frame.
21:
- The control method of claim 18, wherein the plurality of dots is arranged in asymmetry, and the characteristics variation represents position variation of the plurality of dots.
22:
- The control method of claim 18, wherein the plurality of dots is conducting dots electrified by an external power supply, and the characteristics variation represents variation of an inductive capacitance value of each conducting dot.
23:
- The control method of claim 18, wherein the displayed object control signal is a cursor control signal.
24-30:
- (canceled)