KR20060104274A - Optical pointing device and personal portable device that has cover-plate preventing malfunctional factors caused by both foreign substance such as dust and differencies in textile of human finger tips form one person to another - Google Patents

Abstract

The present invention relates to an optical pointing device and an optical pointing device having a cover-plate on which an object (finger), which is an object of an image, is placed in an optical pointing device for a small portable device that enables pointing using a surface of a finger as a subject. It relates to a personal portable terminal having a.

The above-described optical pointing device according to the present invention includes a cover-plate directly contacting a subject; An illumination unit for irradiating light efficiently to the rear surface of the cover glass by using a SMD (Surface Mounted Device) type Chip LED; And a light receiving unit configured to collect light reflected by the subject (finger) through the cover glass and to capture the collected light.

In particular, the cover plate according to the present invention not only maintains a constant focal length between the subject (finger) and the imaging lens at all times, but also functions as a cover to block dust, chemicals, etc. which may flow into the personal portable terminal. Will also serve.

Cover-Plate, Surface Mounted Device, Chip LED (Lighting Emitted Diode), Slim

Description

OPTICAL POINTING DEVICE AND PERSONAL PORTABLE DEVICE THAT HAS COVER-PLATE PREVENTING MALFUNCTIONAL FACTORS CAUSED BY BOTH FOREIGN SUBSTANCE SUCH AS DUST AND DIFFERENCIES TEXTILE OF HUMAN FINGER TIPS FORM ONE PERSON TO ANOTHER}

1 is a view showing an optical mouse for a conventional computer.

2 is a view showing that the cover plate is located on the same side as the outer housing of the small portable device in the optical pointing device according to the preferred embodiment of the present invention.

3 is a view showing a shape in which the cover plate is located below the surface of the outer housing of the small portable device so that the subject (finger) does not directly contact in the optical pointing device according to the preferred embodiment of the present invention.

4 is a view illustrating a shape of a cover plate in a form in which a cover plate is located below a surface of an outer housing of a small portable device and a subject (finger) does not directly contact in the optical pointing device according to the preferred embodiment of the present invention. Change to keep the cover-plate and the subject (finger) in the same position at all times.

Figure 5 is a view characterized in that the convex shape of the cover-plate in the optical pointing device according to a preferred embodiment of the present invention.

Figure 6 is a view characterized in that the concave surface of the cover-plate in the optical pointing device according to a preferred embodiment of the present invention.

7 is a view characterized in that the convex embossing of the shape of the cover-plate in the optical pointing device according to the preferred embodiment of the present invention.

8 is a view characterized in that the concave embossing of the shape of the cover-plate in the optical pointing device according to the preferred embodiment of the present invention.

9 is convex embossing the shape of the cover-plate in the optical pointing device according to the preferred embodiment of the present invention and positioned below the outer housing surface of the small portable device so that the subject (finger) and the cover-plate do not come into contact with each other. Drawing characterized in that.

10 is a concave embossed shape of the cover-plate in the optical pointing device according to the preferred embodiment of the present invention and located below the outer housing surface of the small portable device so that the subject (finger) and the cover-plate do not come into contact with each other. Drawing characterized in that.

11 is a personal portable terminal having an optical pointing device according to a preferred embodiment of the present invention.

The present invention relates to an optical pointing device and an optical pointing device having a cover-plate on which an object (finger), which is an object of an image, is placed in an optical pointing device for a small portable device that enables pointing using a surface of a finger as a subject. It relates to a personal portable terminal having a.

In general, personal mobile terminals such as mobile phones and PDAs (Personal Digital Assistants) employ a user interface using a keypad. In more detail, the conventional personal portable terminal is provided with a keypad composed of a plurality of buttons for inputting numbers and characters, so that a user can input a telephone number or a sentence by inputting a button of the keypad.

In recent years, as wireless Internet services such as WIBRO (Wireless Broadband) services have been commercialized, a Windows operating system supporting a Graphical User Interface (GUI) has been adopted for personal portable terminals. Windows for the personal portable terminal includes Windows CE and the like. In addition, with the development of technology, personal portable terminals have various additional services, and a Windows operating system supporting a GUI is also adopted for convenient operation of the various additional services.

As described above, as the operating system of the GUI is adopted as the user interface of the personal portable terminal, the development of a pointing device suitable for the personal portable terminal is urgently required.

In general, pointing devices for a GUI include a ball mouse, an optical mouse, a laser optical mouse, a touch pad, a tablet, and the like. The pointing device is employed in a computer, and can theoretically be used as a pointing device for a personal portable terminal.

However, since the personal portable terminal is intended to be portable, it is difficult to employ a separate pointing device separated from the main body as a pointing device of the personal portable terminal. In addition, since a track ball-type or joystick-type pointing device physically occupies a predetermined space or more, it is difficult to be employed in a slip and small personal portable terminal.

In addition, the optical mouse input device used in the prior art is always closed because the object surface 102 is placed in the bottom (bottom) structure as shown in FIG. 1 and is always closed because the object surface 102 used is flat. Since the focal length is maintained, the space between the object surface 102 and the imaging lens 103 is always empty by the air layer 105.

However, when the personal portable terminal is always used, since the object always faces upward and the moving object is curved in the shape of a finger, it is impossible to maintain a constant focal length, and thus a reference plane capable of maintaining a constant focal length should be installed. In addition, since the portable devices are always exposed to the pocket or the external environment, dust or foreign substances can penetrate a lot. If not blocked from the outside, dust or foreign substances can penetrate inside the portable device, which may indicate a malfunction. .

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical pointing device and a personal portable terminal, which can be pointed using a surface of a finger as a subject and can be applied to a device having a slim thickness by minimizing the thickness of an optical system. It is done.

In particular, since the user always uses the personal portable terminal facing upwards and the moving object is curved in the shape of a finger, it is impossible to maintain a constant focal length, so a reference plane capable of maintaining a constant focal length should be installed. In addition, since the portable devices are always exposed to the pocket or the external environment, dust or foreign substances can penetrate a lot, and if not blocked from the outside, dust or foreign substances can penetrate inside the portable device, which may indicate a malfunction. It should be structured to block these foreign substances.

Therefore, the cover must be installed so that the outer housing of the personal portable terminal is not exposed to the air.

In order to achieve the above object and to solve the problems of the prior art, it is important to adjust the shape and characteristics of the cover plate directly contacting the subject.

In addition, a portable device widely referred to in the present specification refers to a mobile communication terminal such as a PDA (Personal Digital Assistant) and a handheld PC, or a mobile phone having a predetermined memory and a predetermined microprocessor by mounting a predetermined microprocessor. Concept. In addition, the portable device is a portable multimedia playback device capable of playing multimedia files such as music or video, and may include all kinds of portable devices such as an MP3 player, an MP3 phone, a PDP, a PMP, a DMB receiver, and the like.

The present invention provides an optical pointing device that enables pointing using a surface of a finger as a subject, and particularly, an optical pointing device having a cover-plate on which an object (finger) to be imaged is placed. It is important.

Referring to the configuration of the present invention with reference to the following drawings.

2 is a view showing that the cover plate is located on the same side as the outer housing of the small portable device in the optical pointing device according to an embodiment of the present invention. In this case, the subject (finger) 207 and the imaging lens 203 can always maintain a constant focal length. In addition, since the cover plate 202 and the outer housing 206 of the personal portable terminal form the same surface, it becomes a structure in which dust, foreign matters, etc. cannot penetrate.

5 to 6 described above play the same role as FIG. 2, but the shape of the cover plate is convex or concave, so that the finger contact property can be further improved.

3 is a structure designed to position the cover plate 302 below the surface of the outer housing 306 of the personal portable terminal in the optical pointing device according to the preferred embodiment of the present invention. Since the finger 307 has elasticity, the shape of the fingerprint may be deformed when contacted with the flat cover-plate 306 and the image may not be clear. In addition, this phenomenon becomes more prominent depending on the shape of the human finger or the fingerprint. In this case, the light receiving unit 404 of the optical pointing device may not recognize the movement of the image clearly, which may indicate an unnatural problem of the movement of the pointer. However, if the finger 307 and the cover-plate 306 at regular intervals as described above, the focal length with the imaging lens 403 can be kept constant, and foreign matters can be prevented from being introduced. It can solve the problem that may be malfunction according to the fingerprint shape.

4 is a structure made so that the distance between the finger 407 and the cover-plate 402 can be more stably modified by modifying the structure of the cover-plate of FIG. 3 in the optical pointing device according to the preferred embodiment of the present invention.

7 and 8 are a convex or concave embossing treatment on the cover-plate in the optical pointing device according to the preferred embodiment of the present invention to improve the contact feeling of the finger, even if the cover-plate is physically damaged, there is a problem in transmitting an image. It is designed so that there is no.

9 and 10 illustrate the cover-plate rather than the outer housing surface of the personal portable terminal such that the finger and the cover-plate cannot directly contact the cover-plate after convex or concave embossing in the optical pointing device according to the preferred embodiment of the present invention. It is a structure designed to locate the plate surface at the bottom.

11 illustrates a personal portable terminal 1100 equipped with an optical pointing device according to a preferred embodiment of the present invention.

As described above, the present invention cannot always maintain a constant focal length because a moving object is curved in the shape of a finger when the personal portable terminal is used. Therefore, a reference plane must be installed to maintain a constant focal length. In addition, since portable devices are always exposed to the pocket or the external environment, dust or foreign substances can penetrate a lot. If not, the portable devices can show the defect that the equipment can malfunction due to the penetration of dust or foreign substances into the portable device. The problem can be solved.

In addition, since the finger has elasticity, the shape of the fingerprint may be deformed when contacted with a flat cover-plate, and the image may not be clear. The problem can be solved.

Therefore, the light receiving part of the optical pointing device does not clearly recognize the movement of the image, and thus not only solves the problem of unnatural movement of the pointer, but also makes the finger and the cover plate at regular intervals so that the focal length of the imaging lens is also reduced. While maintaining a constant, it is possible to prevent the inflow of foreign matters and to solve the problem that can be malfunctioned according to the shape or fingerprint shape of each human finger.

As described above, the optical pointing device according to the present invention cannot always maintain a constant focal length because the optical pointing device always faces upward and the moving object is curved in the shape of a finger. A reference surface that can be maintained should be installed. Also, since portable devices are always exposed to the pocket or the external environment, dust or foreign substances can penetrate a lot. Solve problems that could indicate a faulty equipment.

In addition, according to the present invention, if the finger and the cover plate are designed to be spaced apart at a predetermined interval, there is an advantage that can prevent the malfunction according to the shape of the finger or fingerprint of the individual.

The optical pointing device having such a structure can be applied not only to a small portable device such as a mobile phone but also to an electronic device such as a digital camera, a camcorder, a notebook, etc. This will become an essential technology for applying to a graphical user interface (GUI) environment, such as a Windows environment of a computer, which is a future direction of technology.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible.

Accordingly, the scope of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

Claims (6)

In the optical pointing device for a small portable device, An optical pointing device comprising a subject (finger), an imaging lens, and a cover plate that can maintain a constant focal length at all times. The method of claim 1, The material of the cover plate is an optical pointing device, characterized in that the optical plastic, optical glass. The method of claim 1, The shape of the cover-plate is an optical pointing device, characterized in that it has a variety of shapes such as a general plane or convex surface, concave surface, embossing surface. The method of claim 1, The cover-plate protrudes to the same surface as the outer housing of the small portable device. The method of claim 1, The cover-plate is inward of the surface of the outer housing of the small portable device so that the fingerprint shape of the finger is pressed against the cover-plate to prevent the image from being uncertain and slowing the movement of the pointer. In a personal portable terminal having an optical pointing device, A personal digital assistant comprising an optical pointing device having a subject (finger), an imaging lens, and a cover plate which can maintain a constant focal length at all times.

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