WO2004090709A1 - Pointing device - Google Patents
Pointing device Download PDFInfo
- Publication number
- WO2004090709A1 WO2004090709A1 PCT/KR2004/000840 KR2004000840W WO2004090709A1 WO 2004090709 A1 WO2004090709 A1 WO 2004090709A1 KR 2004000840 W KR2004000840 W KR 2004000840W WO 2004090709 A1 WO2004090709 A1 WO 2004090709A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- image
- pointing device
- light emitting
- light
- acquisition area
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
Definitions
- Pointing devices generally include XY tablets, trackballs and mouse that are used for stationary devices such as desktop computers, and touch screen panels (hereinafter referred to as "TSPs") and touch pads that are used for portable electronic devices such as notebook computers.
- TSPs touch screen panels
- the XY tablet is a means for calculating position variation of the magnetic field, which is generated by the flow of electric current, with a separate magnetic field sensor.
- electric currents are successively applied to a lattice consisting of two-dimensional conductors toward X or Y direction to generate a magnetic field.
- the XY tablet comprises a magnetic field sensor connected with an XY tablet body.
- the resistance films in the pressed point contact each other to form a resistance circuit.
- the position of contact between the resistance films can be calculated two-dimensionally.
- the TSP can activate a desired icon by pressing the icon with a sharp-end tool to operate a machine.
- the TSP requires users to use both hands, holding the TSP by one hand and using the sharp-end tool by the other hand.
- users are disabled to use the TSP whenever the sharp-end tool is mislocated or not available.
- the ball mouse and optical mouse are difficult to be applied to portable electronic devices of small size because of the intrinsic limitations of their movement structure.
- Fig. 2 shows an example of a portable electronic device having a conventional pointing device.
- Fig. 2 shows a notebook with a pointing device
- all portable electronic devices including PDA (personal digital assistance) as well as the notebook can employ the pointing device.
- the notebook (50) has a flat-panel display and GUI (graphic user interface) to maximize user's convenience. Users need to use a pointing device such as a touch pad (70), a TSP or a mouse to utilize GUI of the portable electronic device.
- GUI graphic user interface
- Korean Patent Publication No. 2002-14430 discloses a portable wireless information terminal having a pointing device to effectively utilize application programs under the GUI environment.
- the pointing device which includes a ball and a sensor for sensing rotational position, is mounted on the lower side of the information terminal to freely move a cursor on an LCD (liquid crystal display).
- LCD liquid crystal display
- Fig. 5 is a schematic diagram illustrating a pointing device according to a third embodiment of the present invention.
- Fig. 12 shows an example of portable electronic device equipped with a pointing device according to the present invention.
- a user can conveniently control a pointer on the screen of portable electronic device using the surface of his/her finger.
- the movement of a finger causes the change of image in the image- acquisition area.
- the distance and direction for the pointer to be moved can be calculated through the analysis of the change of image due to the movement of a finger.
- the pointing device comprises a light emitting means (100), an image-acquisition area (not shown), an image-formation means (120), a conversion means (130), a motion detector (140), and an operation means (150). These component parts are described in detail.
- the motion detector (140) perceives the extent of movement through the digital image received from the conversion means (130) using a motion estimation method.
- the motion detector (140) uses a motion estimator.
- the operation means (150) receives the extent of movement, e.g., shift data from the motion detector (140) and calculates the distance and direction for the pointer to be moved.
- the operation means (150) is coupled to the pointing device or the processor of a machine on which the pointing device is mounted. Accordingly, the processor can control the pointer on the screen of a display device so that it can be freely moved toward a desired direction by a desired distance.
- the light from a light emitting diode is illuminated onto the finger surface and reflected according to a pattern of the finger surface.
- the light reflected from the finger surface forms an image on the surface of the CMOS image sensor or CCD image sensor array through the lens.
- the formed image is converted into an electric signal by the CMOS image sensor or the CCD image sensor array and entered into a signal processing part to be changed into a digital image.
- the above-mentioned image acquisition is performed very rapidly on a real-time base.
- the motion estimator detects the extent of change between images by comparing the images formed in two adjacent time sequences.
- the detected movement implies movement of a finger in the adjacent time sequences.
- the present invention can embody the pointing device such as a mouse device of a computer using the finger movement.
- a conventional mouse device needs a large flat area on which the mouse device is moved, but the present invention can embody the pointing device within a small space by minimizing the size of the image-acquisition area.
- Figs. 4 and 5 are schematic diagrams illustrating a pointing device according to embodiments of the present invention.
- the pointing device illustrated in Fig. 4 additionally comprises a transparent plate (180) and another LED (104) compared to the pointing device in Fig. 3.
- the change of distance between the fmger surface and the image-acquisition area causes images to be unclear, thereby making the movement analysis difficult.
- the transparent plate (180) to shorten the focal length of lens, the pointing device of the present invention can avoid this problem.
- the present invention employs the transparent plate (180) so that the finger moves on the flat area.
- the fmger surface (110) moves, the dimension and position of the shadow of the finger may change to cause error because of an outside three-dimension lighting. This problem can be solved with two LEDs (102, 104).
- the pointing device additionally comprises a light guide structure (190).
- the light guide structure (190) transforms the light transmitted to the transparent plate (180) into the light similar to planar light, thereby minimizing error occurrence due to change of lighting conditions and distributing uniformly the light from the light emitting means (100) to constantly maintain desired brightness in the predetermined area.
- the factors related to the light guide structure (190) are adjusted appropriately in order to minimize transmission loss of light or image.
- Fig. 6 shows examples of subjects available for a pointing device according to the present invention.
- (a) is the fingerprint of a finger
- (b) is a lattice
- (c) is an example of any perceivable pattern.
- the pointing device in accordance with the present invention preferably uses the surface of a finger, a lattice or a perceivable pattern as the contact subject.
- Fig. 7 is a diagram illustrating how the pointing device of the present invention works.
- area D (230) is an image after the area C (220) moves 2 pixels to the left and 3 pixels upward during a predetermined time T2.
- the pointing device in accordance with the present invention can recognize the direction and distance of a movement made.
- Fig. 8 shows a portable electronic device equipped with a pointing device according to the present invention.
- the portable electronic device (300) includes a PDA.
- the PDA is equipped with the above-mentioned pointing device (310).
- the pointing device (310) is not exposed outside and a cross-shaped mark (320) is printed on the location of the pointing device (310) to represent the place on which a fmger, for example, is positioned to control a pointer.
- the portable electronic device (300) additionally comprises at least a selection button (330) connected to the pointing device (310).
- the selection button (330) is used to select a target with the pointer moved by the pointing device (310) or to enter a command.
- the portable electronic device additionally comprises at least a selection button (330) connected to the pointing device (310).
- the selection button (330) is used to select a target with the pointer moved by the pointing device (310) or to enter a command.
- the portable electronic device (300) additionally comprises at least a selection button (330) connected to the pointing device (310).
- the selection button (330) is used to select a target with the pointer moved by the pointing device (310) or to enter a command.
- (300) uses a secondary battery as a main power source.
- Fig. 9 is a schematic diagram illustrating a pointing device with a contact sensor according to the present invention.
- the light emitting means in a portable electronic device has to be operated only during the use of the pointing device because a considerable electric power is required to operate the light emitting means. Therefore, as a means to determine if the pointing device is in use, a contact sensor (350) is attached around the image-acquisition area. When a finger touches the contact sensor (350) or is placed near the contact sensor (350), the control part (360) operates the light emitting means so that the pointing device begins to work.
- the contact sensor (350) may preferably perform the role of selection switch, which is similar to double-click of a conventional mouse device, for selecting the present position or a predetermined function indicated by a pointer, based on a predetermined time interval for which the fmger touches.
- selection switch For the role of the selection switch, "contact”, “non-contact”, and “contact have to be performed in sequence in a short time interval.
- the contact sensor (350) may be internally connected with on-off terminals of the conversion means and the light emitting means so as to control the on or the off state of the conversion means and the light emitting means according to the "contact” or “non-contact” status with the subject using hardware.
- the output of the contact sensor (350) may be connected with the control part (210) so as to control the on or the off state of the conversion means and the light emitting means using software.
- the contact sensor (350) is preferably placed around the image acquisition area within a radius of about 3 cm from the center of the image acquisition area and can be embodied by both contact and non-contact fashion.
- the portable electronic device with the pointing device may be programmed so that the contact sensor operates the pointing device in case of a program requiring the pointing device and the pointing device is turned off in case of a program requiring no pointing device.
- the pointing device is automatically turned off by means of an appropriate programming while the game is displayed on a screen.
- Fig. 10 is a diagram illustrating a two-dimensional pointing device with an integral structure.
- the pointing device in accordance with the present invention is preferably used for small-sized portable electronic devices such as cellular phones and, therefore, the miniaturization of the pointing device is essential.
- the spherical or non-spherical lens is united into the integral structure as a part.
- Such an integral structure improves operation efficiency and productivity by minimizing occurrence of defectiveness due to tolerance in assembling.
- a printed circuit board (420) is installed into the housing (410).
- the light emitting means (440), the conversion means (450), and parts containing circuits for operation are mounted on the printed circuit board (420).
- a cover (430) is used to maintain constantly the shape of the finger surface in contact with the area in the top of the pointing device.
- the cover (430) can protect the light emitting means (440), the image-formation means (400), the housing (410), the conversion means (450), and the printed circuit board (420) from contamination such as dust.
- Fig. 11 is a schematic diagram illustrating a pointing device according to another embodiment of the present invention.
- Fig. 12 shows an example of a portable electronic device equipped with the pointing device according to the present invention.
- the pointing device in a small-size portable electronic device such as a cellular phone is preferably embodied by the selection method using pressure.
- a contact area (510) on the top of the united pointing device module (500) and a switch (520) under the pointing device module (500). If the contact area (510) is pressed, the pointing device module (500) capable of moving up and down operates the switch (520).
- the switch (520) When the pointing device module (500) is pressed to operate the switch (520), a graphic icon indicated by a pointer (540) on a screen (530) is selected and, then, the corresponding function is performed.
- the pointing device of the present invention may employ the surface of a palm, the surface of the back of a hand, and all types of objects with a surface similar to a finger surface as well as the finger surface as a means to control the pointer.
- the foregoing embodiments are merely exemplary and are not to be construed as limiting the present invention.
- the present teachings can be readily applied to other types of apparatuses.
- the description of the present invention is intended to be illustrative, and not to limit the scope of the claims. Many alternatives, modifications, and variations will be apparent to those skilled in the art.
- the pointing device in accordance with the present invention can be embodied in a small space through the minimization of the image-acquisition area.
- the pointing device needs not a mouse pad or a flat surface.
- the pointing device can be embodied on portable electronic devices such as cellular phones and PDAs because it is small in size.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006507803A JP2006522981A (en) | 2003-04-11 | 2004-04-12 | pointing device |
EP04726924A EP1614022A1 (en) | 2003-04-11 | 2004-04-12 | Pointing device |
US10/524,879 US20050275618A1 (en) | 2003-04-11 | 2004-04-12 | Pointing device |
TW094100292A TWI280500B (en) | 2004-04-12 | 2005-01-05 | Pointing device |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2003-0022936A KR100465969B1 (en) | 2003-04-11 | 2003-04-11 | Pointing device using the surface of a finger |
KR10-2003-0022936 | 2003-04-11 | ||
KR1020040016664A KR100613705B1 (en) | 2004-03-11 | 2004-03-11 | 2D pointing device |
KR10-2004-0016664 | 2004-03-11 | ||
KR1020040016965A KR100609346B1 (en) | 2004-03-12 | 2004-03-12 | Pointing device having touch sensor |
KR1020040016738A KR100650623B1 (en) | 2004-03-12 | 2004-03-12 | Optical pointing device having switch function |
KR10-2004-0016965 | 2004-03-12 | ||
KR10-2004-0016738 | 2004-03-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004090709A1 true WO2004090709A1 (en) | 2004-10-21 |
Family
ID=33163093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2004/000840 WO2004090709A1 (en) | 2003-04-11 | 2004-04-12 | Pointing device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1614022A1 (en) |
JP (1) | JP2006522981A (en) |
WO (1) | WO2004090709A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008068557A2 (en) * | 2006-12-05 | 2008-06-12 | Sony Ericsson Mobile Communications Ab | Method and system for detecting movement of an object |
CN100462904C (en) * | 2005-07-04 | 2009-02-18 | 艾勒博科技股份有限公司 | Optic mouse and optic mouse system and method thereof |
US8411068B2 (en) | 2007-12-25 | 2013-04-02 | Pixart Imaging Inc. | Method for detecting users' pressing action and optical operating unit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6184863B1 (en) * | 1998-10-13 | 2001-02-06 | The George Washington University | Direct pointing apparatus and method therefor |
WO2001014957A1 (en) * | 1999-08-26 | 2001-03-01 | Hiew Pang Leow | Control stick for a finger pointing device |
US20030020688A1 (en) * | 2001-07-24 | 2003-01-30 | Norskog Allen C. | System and method for reducing power consumption in an optical screen pointing device |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03291716A (en) * | 1990-04-10 | 1991-12-20 | Toshiba Corp | Pointing device |
JPH06259176A (en) * | 1993-03-09 | 1994-09-16 | Kubota Corp | Data inputting device |
JPH08179878A (en) * | 1994-12-21 | 1996-07-12 | Sharp Corp | Input device for computer |
JP3473888B2 (en) * | 1997-08-04 | 2003-12-08 | シャープ株式会社 | Input device |
US6057540A (en) * | 1998-04-30 | 2000-05-02 | Hewlett-Packard Co | Mouseless optical and position translation type screen pointer control for a computer system |
US6552713B1 (en) * | 1999-12-16 | 2003-04-22 | Hewlett-Packard Company | Optical pointing device |
JP2002062983A (en) * | 2000-08-21 | 2002-02-28 | Hitachi Ltd | Pointing device |
CN1227617C (en) * | 2000-11-06 | 2005-11-16 | 皇家菲利浦电子有限公司 | Method of measuring movement of input device |
JP4022090B2 (en) * | 2002-03-27 | 2007-12-12 | 富士通株式会社 | Finger movement detection method and detection apparatus |
-
2004
- 2004-04-12 JP JP2006507803A patent/JP2006522981A/en active Pending
- 2004-04-12 WO PCT/KR2004/000840 patent/WO2004090709A1/en not_active Application Discontinuation
- 2004-04-12 EP EP04726924A patent/EP1614022A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6184863B1 (en) * | 1998-10-13 | 2001-02-06 | The George Washington University | Direct pointing apparatus and method therefor |
WO2001014957A1 (en) * | 1999-08-26 | 2001-03-01 | Hiew Pang Leow | Control stick for a finger pointing device |
US20030020688A1 (en) * | 2001-07-24 | 2003-01-30 | Norskog Allen C. | System and method for reducing power consumption in an optical screen pointing device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100462904C (en) * | 2005-07-04 | 2009-02-18 | 艾勒博科技股份有限公司 | Optic mouse and optic mouse system and method thereof |
WO2008068557A2 (en) * | 2006-12-05 | 2008-06-12 | Sony Ericsson Mobile Communications Ab | Method and system for detecting movement of an object |
WO2008068557A3 (en) * | 2006-12-05 | 2008-07-31 | Sony Ericsson Mobile Comm Ab | Method and system for detecting movement of an object |
US8411068B2 (en) | 2007-12-25 | 2013-04-02 | Pixart Imaging Inc. | Method for detecting users' pressing action and optical operating unit |
Also Published As
Publication number | Publication date |
---|---|
JP2006522981A (en) | 2006-10-05 |
EP1614022A1 (en) | 2006-01-11 |
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