CN201336026Y - Induction type coordinate input device - Google Patents

Abstract

The utility model provides an inductive coordinate input device, which includes a coordinate detection area, at least two imaging devices and at least one control module. The imaging device also includes a sensing component. When an object moves in the coordinate detection area, the sensing component captures the image position of the object and transmits it to the control module. The control module calculates two angles from the object to the two imaging devices based on the two image positions, and then calculates the coordinate value of the object on the coordinate detection area. Since the utility model does not require a frame for reflecting light, the volume of the inductive coordinate input device can be reduced, the manufacturing flexibility can be increased, the cost can be reduced, and the development time can be accelerated.

Description

Inductive coordinate input device

technical field

The utility model relates to a coordinate input technology, in particular to an inductive coordinate input device.

Background technique

Generally, electronic devices with input functions, such as computers, mobile phones, etc., input signals through an external keyboard, and transmit the signals to circuit components inside the electronic device to achieve the effect of operating the electronic components. However, such an input method through a keyboard cannot meet the requirement of thinness, lightness and compactness of the electronic product due to the need to provide a space for the keyboard.

In the current technology, there is a resistive touch panel that can replace the above-mentioned keyboard input. The user only needs to apply pressure on the touch panel with a finger, a stylus or other pointers, and the upper and lower layers of indium tin oxide (Indium Tin Oxide) Tin Oxide, ITO) contact, the induction signal is output to the electronic device to judge the position of the touch panel, but the disadvantage of this technology is that if the insulation resistance is not large enough, it will cause interference, that is, a short circuit. The computer generates wrong actions.

Therefore, the present invention proposes an inductive coordinate input device to effectively overcome the above-mentioned problems. The specific structure and its implementation are as follows.

Contents of the invention

The main purpose of the present invention is to provide an inductive coordinate input device, which uses image sensing to determine the coordinates of objects moving on the coordinate detection area, and outputs them to a control module or a host.

Another object of the present invention is to provide an inductive coordinate input device, which uses an image capturing device to directly capture an image of an object, and then uses a control module to calculate the coordinate position of the object on the coordinate detection area.

Another object of the present invention is to provide an inductive coordinate input device, which can be built in a display or hung outside a display.

In order to achieve the above purpose, the utility model provides an inductive coordinate input device, which includes a coordinate detection area, an object moves in the coordinate detection area; two imaging devices, respectively located at the four corners of the coordinate detection area , used to capture an image position of the object; and at least one control module, receiving the image position captured by the imaging device, calculating at least two angles between the imaging device and the object, and then calculating the position of the object in the coordinate detection area a coordinate value.

The following is a detailed description of specific embodiments, so that it is easier to understand the purpose, technical content, characteristics and effects of the present utility model.

Description of drawings

Fig. 1 is a perspective view of the inductive coordinate input device of the present invention.

Fig. 2 is an internal schematic diagram of the imaging device in the present invention.

In the picture:

10 inductive coordinate input device

12 coordinate detection area

14 imaging device

142 induction components

144 lenses

16 control modules

18 objects

Detailed ways

The utility model provides an inductive coordinate input device. As shown in FIG. The imaging device 14 can be respectively arranged at the lower left corner and the lower right corner, the upper left corner and the lower left corner, the upper right corner and the lower right corner or the upper left corner and the upper right corner of the coordinate detection area 12 .

The coordinate detection area 12 is moved on it by an object 18, and this object 18 can be a user's finger or an indicator; An induction component 142 and a lens 144 are arranged in the imaging device 14, and the induction component 142 passes through The lens 144 captures the image position of the object 18, so the two sensing components 142 can obtain two image positions; after the control module 16 receives the image position captured by the image capturing device 14, it calculates the distance between the image capturing device 14 and the object 18 The two angles are used to calculate a coordinate value of the object 18 located in the coordinate detection area 12 .

The inductive coordinate input device of the utility model can be independent from a display and be hung on the display when in use, or the inductive coordinate input device can be built into the display for direct use.

In the present invention, a group of auxiliary light sources can be provided, which can be located at the back of the coordinate detection area or inside the imaging device, and the auxiliary light sources are invisible light.

Since the utility model does not need to set light-reflecting objects such as mirrors and reflective frames around the inductive coordinate input device 10, it can greatly reduce the overall area of the inductive coordinate input device, making it lighter, thinner and shorter, and can Increase manufacturing flexibility. For example, the inductive coordinate input device originally applied at 12 o'clock, when it is applied to the panel at 13 o'clock, it only needs to be modified in the software, and there is no need to re-open the mold to make a new frame, and it can be adjusted at will. The installation position of the imaging device; in addition, the absence of a frame that reflects light can also reduce material costs and development costs, and speed up the development time of different modules.

To sum up, the inductive coordinate input device provided by the utility model uses two imaging devices to capture the image of the object, and the imaging device can be installed at any two corners of the four corners of the coordinate detection area to capture the image of the object After the position, use the control module to calculate the angle between the object and the imaging device, and obtain the coordinate value of the object on the coordinate detection area after cross-comparison.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the implementation scope of the present utility model. Therefore, all equivalent changes or modifications made according to the features and contents described in the scope of application of the utility model shall be included in the scope of patent application of the utility model.

Claims (11)

1. induction type coordinate entering device is characterized in that: comprising:

One coordinate detection region, an object move in this coordinate detection region;

Two image-taking devices lay respectively at four jiaos of this coordinate detection region, in order to capture an image position of this object; And

At least one control module receives this image position that this image-taking device captures, and calculates at least two angles of this image-taking device and this object, and then calculates the coordinate figure that this object is positioned at this coordinate detection region.

2. induction type coordinate entering device according to claim 1 is characterized in that: wherein this image-taking device lays respectively at the lower left corner and the lower right corner of this coordinate detection region.

3. induction type coordinate entering device according to claim 1 is characterized in that: wherein this image-taking device lays respectively at the lower left corner and the upper left corner of this coordinate detection region.

4. induction type coordinate entering device according to claim 1 is characterized in that: wherein this image-taking device lays respectively at the upper right corner and the lower right corner of this coordinate detection region.

5. induction type coordinate entering device according to claim 1 is characterized in that: wherein this image-taking device lays respectively at the upper left corner and the upper right corner of this coordinate detection region.

6. induction type coordinate entering device according to claim 1 is characterized in that: wherein comprise an inductive component and at least one eyeglass in this image-taking device.

7. induction type coordinate entering device according to claim 1 is characterized in that: wherein this control module obtains this coordinate figure after utilizing this angular cross comparison.

8. induction type coordinate entering device according to claim 1 is characterized in that: wherein this control module exports this coordinate figure in one main frame to.

9. induction type coordinate entering device according to claim 1 is characterized in that: wherein this object is a user a finger or an indicator.

10. induction type coordinate entering device according to claim 1 is characterized in that: wherein this coordinate detection region is transparent, is hung on outward on the display, maybe will be built in the display in this coordinate detection region.

11. induction type coordinate entering device according to claim 1 is characterized in that: more comprise one group of secondary light source, it is to be arranged at this coordinate detection region back side or this image-taking device inside, and this secondary light source is an invisible light.

Images