TWI450133B - Portable handwriting input apparatus - Google Patents

Description

Portable handwriting input device

The present invention relates to a handwriting input device, and more particularly to a portable handwriting input device.

The conventional handwriting input device includes a tablet and a stylus. The reflection coil in the tablet first emits an electromagnetic wave of a time segment, and the frequency of the electromagnetic wave is the same as the resonance frequency of the coil in the stylus pen body, so that the LC circuit in the pen body Resonance, then the transmitting coil in the tablet stops transmitting electromagnetic waves and switches to the receiving state, and the LC circuit in the stylus pen body generates an oscillation due to resonance and gradually decays, is received by the receiving coil in the tablet, and is amplified. And the filter circuit extracts the signal, calculates the falling point coordinates in the input plane and the corresponding pressure sensing, so as to display the text or image input by the input pen on the display connected thereto.

However, the circuit design of the handwriting input device is complicated and costly; the material of the tablet is hard and cannot be folded or bent, and is inconvenient to store and carry.

In view of this, it is necessary to provide a handwriting input device that is simple in structure and easy to carry.

A portable handwriting input device includes an input pen, an input panel, an image capturing module, an accommodating portion having an opening, and a winding shaft, the input panel having a working area for working on the input panel Touch or write in the area, the shadow The input panel is flexible, and the winding shaft is disposed in the receiving portion. One end of the input panel is connected to the winding shaft, and the other end of the input panel is received by the receiving panel. The opening of the portion extends or is wound around the winding shaft.

Compared with the prior art, the portable handwriting input device provided by the present invention uses the image capturing module to capture the detecting light emitted by the input pen to determine the falling point coordinates of the input pen, and has a simple structure; the input panel is flexible and can be wound around Winding shaft for easy storage and carrying.

10‧‧‧Handwriting input device

20‧‧‧ input pen

30‧‧‧Input panel

40‧‧‧ camera module

50‧‧‧Winding shaft

60‧‧‧ Housing Department

21‧‧‧ tip

31‧‧‧ upper surface

62‧‧‧ openings

70‧‧‧Support

71‧‧‧ first end

72‧‧‧ second end

61‧‧‧handle

1 is a schematic diagram showing the use state of a portable handwriting input device according to a preferred embodiment of the present invention.

2 is a schematic view showing the storage state of the portable handwriting input device of FIG. 1.

3 is an internal cross-sectional view of the portable handwriting input device of FIG. 2.

The invention will now be described in further detail with reference to the accompanying drawings.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , the portable handwriting input device 10 according to the preferred embodiment of the present invention includes the following parts, but is not limited to: an input pen 20 , an input panel 30 , a camera module 40 , a winding shaft 50 , and a receiving body . Part 60.

In one case, the input pen 20 is a writing pen, such as a pencil, a ballpoint pen, a ball pen, a pen, and the like. The input panel 30 has a work area and is made of a writing material such as various paper sheets. The ingestion range of the camera module 40 covers the entire work area.

When the input pen 20 writes or touches the working area of the input panel 30, the handwriting is left, the camera module 40 captures the handwriting, and the handwriting is captured according to the input panel 30. The relative positional relationship is such that the handwritten picture is subjected to a corresponding angle conversion or the like, so that the handwriting is displayed outside the electrical connection with the portable handwriting input device 10, generally a display, such that the text or graphics written by the input pen 20 will Displayed to achieve the purpose of handwriting input.

Alternatively, the input pen 20 can emit detection light that is emitted and received by the camera module 40 when writing or touching the working area of the input panel 30. Preferably, an infrared light emitting diode is provided at the tip end 21 of the input pen 20, and the infrared light emitting diode emits infrared light as a light for detection. When the infrared light emitting diode is disposed at the tip end 21, the falling point of the detecting light is coincident with the falling point of the input pen 20, that is, the coordinates of the writing trace or the touch trace are consistent with the coordinates of the detecting light, which is convenient for calculation.

Of course, the input pen 20 can also take into consideration the above two cases in structure, that is, it can have both the function of a writing pen and the function of emitting light for detection.

In either case, the portable handwriting input device 10 has the following features: The input panel 30 is made of a flexible, crimpable material such as a rubber material, cotton cloth, paper, or the like. The input panel 30 has a rectangular shape, and its effective working area may be the entire input panel 30 or a part of the input panel 30. The input panel 30 has an upper surface 31 which is preferably light colored, such as white, light gray, silver grey, etc., to facilitate reflection. Preferably, the upper surface 31 has a reflectance of at least 0.7 for the detection light to increase the response speed of the portable handwriting input device 10.

The camera module 40 is located above the upper surface 31, and the ingestion range covers the working area of the input panel 30. Since the detection light is infrared light, the camera module 40 is a camera module that uses infrared light imaging.

The input pen 20 touches or inputs a text image or the like on the upper surface 31, and is located at the same time. The infrared light emitting diode of the tip end 21 of the pen 20 emits infrared light, which falls on the upper surface 31 and is then reflected by the upper surface 31. The camera module 40 picks up the detection light reflected by the upper surface 31, and after imaging, compares the image before the pen down and the image after the pen down to determine the coordinates of the pen point point, and finally displays the input information of the input pen 20. Set the display (not shown) or make a touch response from the computer.

The winding shaft 50 is located on one side of the input panel 30 and has a cylindrical shape, and one end of the input panel 30 is connected to the winding shaft 50. The input panel 30 can be wound onto the winding shaft 50 by rotating the winding shaft 50.

The accommodating portion 60 houses the winding shaft 50. In the present embodiment, the receiving portion 60 is a hollow cylindrical structure having an opening 62 from which the other end of the input panel 30 extends or is received. A support frame 70 is disposed on the surface of the accommodating portion 60. The support portion 70 has a first end 71 and a second end 71. The first end 71 is fixed to the surface of the accommodating portion 60, and the second end 72 is a free end. The camera module 40 is disposed at the second end 72 and the lens faces the input panel 30.

The handle 61 can be connected to the circular winding shaft 50 of the accommodating portion 60, and the input shaft 30 can be wound by rotating the handle 61. When in use, the handle 61 is rotated in the opposite direction to rotate the input panel 30 out.

In addition to manually winding the input panel 30, a power device can be disposed in the accommodating portion 60 by electric means, and a switch is provided outside the accommodating portion 60, and the opening and closing of the switch respectively control the power device to realize the input portion. Retracted and rolled out.

In use, the portable handwriting input device 10 can be placed at a place where the user can write, such as a hard platform such as a desk, and the input panel 30 can be rolled up and carried when not in use.

In addition, light of other wavelength bands may be used as the light for detection, such as green light, blue light or red light.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧Handwriting input device

20‧‧‧ input pen

30‧‧‧Input panel

40‧‧‧ camera module

60‧‧‧ Housing Department

21‧‧‧ tip

31‧‧‧ upper surface

70‧‧‧Support

71‧‧‧ first end

72‧‧‧ second end

61‧‧‧handle

Claims (9)

A portable handwriting input device includes an input pen, an input panel, an image capturing module, an accommodating portion having an opening, and a winding shaft, the input panel having a working area for working on the input panel The area of the image capturing module covers the working area, and the input panel is made of a flexible and curable material. The winding shaft is disposed in the receiving portion, and the one end of the input panel and the volume The shaft is connected to the shaft, and the other end of the input panel is extended from the opening of the receiving portion or wound around the winding shaft. The portable handwriting input device of claim 1, wherein a support portion is fixed on a surface of the receiving portion for supporting and fixing the image capturing module. The portable handwriting input device of claim 1, wherein: the input pen can leave a material trace in the working area, the image capturing module identifies the material trace and displays the material trace on the peripheral device monitor. The portable handwriting input device of claim 1, wherein the stylus is capable of emitting light for detection. The portable handwriting input device of claim 4, wherein the detecting light is infrared light, and the image capturing module is an infrared light image capturing module. The portable handwriting input device of claim 4, wherein the stylus has a pen tip, and the pen tip emits light for detection. The portable handwriting input device of claim 4, wherein the input panel has a reflectance of at least 0.7 for the detection light. The portable handwriting input device of claim 1, wherein the receiving portion is a hollow cylindrical structure. The portable handwriting input device of claim 1, wherein: the input pen is A trace of matter is left in the work area to emit light for detection.