Patent application number | Description | Published |
20080259052 | Optical touch control apparatus and method thereof - The present invention discloses an optical touch control apparatus, comprising: a light guide module having an optical information capturing position, the light guide module guiding light to the optical information capturing position, and generating optical information according to light input through or reflected from the optical information capturing position; and an image sensor module for sensing the optical information, and generating an electronic signal according to the optical information. | 10-23-2008 |
20090146044 | OPTICAL DISPLACEMENT DETECTION APPARATUS AND OPTICAL DISPLACEMENT DETECTION METHOD - The present invention discloses an optical displacement detection apparatus and an optical displacement detection method. The optical displacement detection apparatus comprises: at least two light sources for projecting light of different spectrums to a surface under detection, respectively; an image capturing unit for receiving light reflected from the surface under detection and converting it into electronic signals; and a processor and control circuit for calculating displacement according to the electronic signals from the image capturing unit, wherein the processor and control circuit is capable of switching between the light sources. | 06-11-2009 |
20090207130 | INPUT DEVICE AND INPUT METHOD - The present invention discloses an input device and an input method. The input device comprises: a device for receiving input signals; and a processor circuit for generating control information according to comparison between a first difference between two input signals in a first direction and a second difference between two input signals in a second direction. | 08-20-2009 |
20100090950 | Sensing System and Method for Obtaining Position of Pointer thereof - In a sensing system and a method for obtaining a position of a pointer, the sensing system includes a sensing area, a reflective mirror, an image sensor and a processing circuit. The reflective mirror is configured for generating a mirror image of a pointer when the pointer approaches the sensing area. The image sensor is configured for sensing the pointer and the mirror image thereof when the pointer approaches the sensing area. When the pointer approaches the sensing area, the processing circuit calculates a coordinate value of the pointer according to an image sensed by the image sensor and a predetermined size of the pointer. The pointer forms an imaginary orthographic projection in the sensing area, the processing circuit regards the imaginary orthographic projection as a round projection, and a radius of the round projection is the predetermined size. | 04-15-2010 |
20100094584 | Sensing System and Method for Obtaining Location of Pointer thereof - In a sensing system and a method for obtaining a location of a pointer, the sensing system includes a sensing area, a reflective mirror, a first image sensor and a second image sensor. The reflective mirror is configured for generating a mirror image of the sensing area. The sensing system utilizes the above two image sensors to sense the pointer disposed in the sensing area and a mirror image of the pointer for obtaining two coordinate values. And then the sensing system endues each of the two coordinate values with a weighting factor for calculating the location of the pointer. | 04-15-2010 |
20110134077 | Input Device and Input Method - The present invention discloses an input device and an input method. The input device is configured to indicate a lateral movement of a finger by comparing the two orthogonal components of a finger movement. | 06-09-2011 |
20120013885 | DISTANCE MEASURING DEVICE AND METHOD FOR MEASURING DISTANCE - A distance measuring device having a measuring range and configured for measuring a distance of at least an object located in the measuring range is provided. The distance measuring device includes a light emitting component, a diffusing component, an adjusting component and an image sensing component. The light emitting component is configured for emitting a light beam. The diffusing component is disposed on a transmission path of the light beam and is configured for transforming the light beam into a measuring light beam with a specific pattern to irradiate the object. The adjusting component is configured for adjusting an incidence angle and an incidence location of the light beam striking at the diffusing component. The image sensing component has a field of view covering the measuring range. The distance measuring device has a far measurable distance. A method for measuring distance and another distance measuring device are also provided. | 01-19-2012 |
20120019443 | TOUCH SYSTEM AND TOUCH SENSING METHOD - A touch system comprises a transparent panel, a first image sensing module, a second image sensing module and a processing circuit. The first image sensing module is at least partially disposed on a first flat surface of the transparent for obtaining an image above the first flat surface. The second image sensing module is at least partially disposed under a second flat surface of the transparent for obtaining an image of the first flat surface through the second flat surface. When two pointers approach the first flat surface, the processing circuit calculates possible coordinates of the pointers according to the image obtained by the first image sensing module and calculates coordinates of the pointers according to the image obtained by the second image sensing module, so as to compare all of the coordinates to obtain actual coordinates of the pointers from the possible coordinates. | 01-26-2012 |
20120044363 | INTERACTION CONTROL SYSTEM, METHOD FOR DETECTING MOTION OF OBJECT, HOST APPARATUS AND CONTROL METHOD THEREOF - A method for controlling a host apparatus, includes steps of the followings. First, a pattern is projected to a detection region. Second, images of the detection region are captured and image information stream is generated based on the images. Third, an image information associated with the pattern is identified to be a background image information. Fourth, a currently captured image information is subtracted to the background image information to identify if an object appears in the detection region. Fifth, a motion of the identified object is determined based on a variation of the pattern reflected from the identified object to generate a control instruction to the host apparatus. A host apparatus, an interaction control system and a method for detecting a motion of an object are also provided. | 02-23-2012 |
20120057023 | DISTANCE MEASUREMENT SYSTEM AND METHOD - A distance measurement method comprising: projecting a light beam having a speckle pattern to at least one reference plane to show a plurality of images with the speckle pattern on the at least one reference plane. The speckle pattern has a plurality of speckles, so as to capture the image with the speckle pattern on the reference plane to obtain a plurality of reference image information. When the object enters the area illuminated by a light source module, an image with the speckle pattern on a surface of an object is captured to obtain an object image information. Then, a plurality of brightness relationships among each of the speckles with adjacent speckles rounding each speckle are computed according to the reference image and the object image information to obtain relative brightness information of each speckle, which is used to compute position of the object. | 03-08-2012 |
20120057175 | DISTANCE MEASUREMENT METHOD AND SYSTEM, AND PROCESSING SOFTWARE THEREOF - A distance measurement system and method are provided. The distance measurement method first projects a light beam with a speckle pattern to reference planes and an object to allow the reference planes and a surface of the object each have an image of the speckle pattern, the speckle pattern having a plurality of speckles. Next, images of the speckle pattern reflected by the reference planes are captured to generate reference image information, and an image of the speckle pattern reflected by the surface of the object is captured to generate an object image information. A processing module which may be a processing software can compare the object image information with the reference image information to obtain several similarity scores. If the most the most similarity score is greater than a threshold value, the processing module identifies the corresponding reference plane, thereby computing the position of the object. | 03-08-2012 |
20120057758 | DISTANCE MEASUREMENT METHOD AND SYSTEM, AND STORAGE MEDIA - A distance measurement system provided by the present invention comprises a light source module, for projecting a light beam having a speckle pattern to a plurality of reference flat surfaces and an object which are located at different position points, so as to show an image of the speckle pattern on each of the reference flat surface and the object. The speckle pattern contains a plurality of speckles. The invention generates a plurality of reference image information through capturing the image of the speckle pattern on each of the plurality of reference flat surfaces and generates an object image information through capturing the image of the speckle pattern on the object. The Invention further generates a plurality of comparison results through comparing the plurality of reference image information, and computes the position of the object through performing an interpolation operation to generate the plurality of comparison results. | 03-08-2012 |
20120113252 | DISTANCE MEASURING METHOD, DISTANCE MEASURING SYSTEM AND PROCESSING SOFTWARE THEREOF - A distance measuring system includes a light source module, an image capturing device and a processing module. The light source module transmits a light beam having a speckle pattern to a first flat surface and a second flat surface, and an object. The image capturing device captures the image of the speckle pattern shown on the first and second flat surfaces, and captures the image of the speckle pattern shown on a surface of the object to produce a first reference image information, a second reference image information, and an object image information. The processing module calculates a displacement vector of the speckle pattern according to the first and second reference image information. The processing module calculates the relative distance between the object and the first flat surface or the second flat surface according to the position of the speckle pattern on the object image information and the displacement vector. | 05-10-2012 |
20120200861 | OPTICAL DISPLACEMENT DETECTION APPARATUS AND OPTICAL DISPLACEMENT DETECTION METHOD - The present invention discloses an optical displacement detection apparatus and an optical displacement detection method. The optical displacement detection apparatus comprises: at least two light sources for projecting light of different spectrums to a surface under detection, respectively; an image capturing device for receiving light reflected from the surface under detection and converting it into electronic signals; and a processing control circuit for calculating displacement according to the electronic signals from the image capturing device, wherein the processing control circuit is capable of switching between the light sources. | 08-09-2012 |
20120206347 | IMAGE-CAPTURING DEVICE FOR OPTICAL POINTING APPARATUS AND METHOD THEREOF - A method of smoothing the movement of a cursor controlled by an optical pointing apparatus includes the steps of sensing an image of a surface and generating a sensing signal by an optical pointing apparatus, continuously outputting a movement signal to control the movement of a cursor on a display by the sensing signal, and smoothing the continuously outputted movement signal at different levels according to the speed represented by the movement signal. | 08-16-2012 |
20120206352 | IMAGE-CAPTURING DEVICE FOR OPTICAL POINTING APPARATUS - An image-capturing device configured for an optical pointing apparatus includes a plurality of image-sensing units arranged adjacently. The plurality of image-sensing units are configured to sense images of a surface and generate sensing signals that are used for evaluating the velocity of the optical pointing apparatus. The image-capturing device is configured to use different image-sensing units arranged differently to sense the surface according to the velocity of the optical pointing apparatus. When the optical pointing apparatus moves at a first velocity, the image-capturing device uses the image-sensing units configured to occupy a smaller area to sense the surface. When the optical pointing apparatus moves at a second velocity, the image-capturing device uses the image-sensing units configured to occupy a larger area to sense the surface. The first velocity is lower than the second velocity. | 08-16-2012 |
20120326975 | INPUT DEVICE AND INPUT METHOD - The present invention discloses an input device and an input method. The input device comprises: an image acquiring device for acquire sequence of images when an object moves in front of the field of view of the image acquiring device; and a processor for generating a rotation signal according to the rotation status of the object. | 12-27-2012 |
20130181610 | LIGHT SENSING MODULE AND CALIBRATION METHOD FOR DRIVING CURRENT OF LIGHT SOURCE - A calibration method for a driving current of a light source adapted to sequentially calibrate at least an optical navigation device, each including a light sensing device, a memory unit and a driving unit. The driving unit is electrically connected to the memory unit and a light source configured to receive a reflection light. The calibration method includes steps of: driving the light source to provide a beam through configuring the driving unit to supply a first driving current to the light source; configuring the light sensing device to generate a sensed light value; obtaining a second driving current through modulating the value of the first driving current according to the sensed light value; and recording the value of the second driving current in the memory unit and driving the light source to provide the beam according to the second driving current. A light sensing module is also provided. | 07-18-2013 |
20130329963 | STORAGE MEDIA FOR COMPUTING POSITION OF OBJECT USING SPECKLE PATTERN - A storage media provided by the present invention, has a non-transitory processing software for computing a position of an object in a distance measurement system, the execution of the processing software comprising: receiving a plurality of reference image information contained in an image with a speckle pattern, wherein the image is projected from a light beam on a plurality of reference flat surfaces which are located on different position points, and the speckle contains a plurality of speckles; receiving an object image information contained in an image with the speckle pattern which is projected from the light beam on an object; obtaining a plurality of comparison results through comparing the plurality of reference image information with the object image information; and computing the position of the object through performing an interpolation operation to the plurality of comparison results. | 12-12-2013 |
20140105465 | DISTANCE MEASUREMENT METHOD AND SYSTEM, AND PROCESSING SOFTWARE THEREOF - A distance measurement system and method are provided. The distance measurement method first projects a light beam with a speckle pattern to reference planes and an object to allow the reference planes and a surface of the object each have an image of the speckle pattern, the speckle pattern having a plurality of speckles. Next, images of the speckle pattern reflected by the reference planes are captured to generate reference image information, and an image of the speckle pattern reflected by the surface of the object is captured to generate an object image information. A processing module which may be a processing software can compare the object image information with the reference image information to obtain several similarity scores. If the most the most similarity score is greater than a threshold value, the processing module identifies the corresponding reference plane, thereby computing the position of the object. | 04-17-2014 |