Abstract: A smart wearable device has a signal calibration function executed by a signal calibration method and applied to a finger, a limb and/or a neck of a user. The smart wearable device includes at least one physiological signal detector, at least one pressure detector and an operation processor. The at least one physiological signal detector is adapted to abut against a detection area of the user for detecting a physiological signal. The at least one pressure detector is disposed around the at least one physiological signal detector and adapted to detect a pressure value of the detection area. The operation processor is electrically connected with the at least one physiological signal detector and the at least one pressure detector. The operation processor is adapted to optimize the physiological signal when the pressure value exceeds a predefined pressure threshold.

Abstract: A touch reading system for playing cloud-based audio and video contents through application software (APP) includes a book with an invisible printed code and a touch reading pen with a wireless transmission function. The touch reading pen can obtain a digital number from the book and transmit the digital number to a smart device with APP supported by an arbitrary one of the existing operating systems. The touch reading system allows audio and video contents to be played by devices other than a displaying device, and can connect to a cloud server through the networking function of the smart device so that the desired video contents can be easily downloaded, updated, and managed through the APP to increase the videos available to be played. The touch reading system adopts a cross-platform APP system and supports all the currently mainstream operating systems such as Android, Windows, and iOS.

Abstract: An always-on system with multi-layer power management includes an always-on portion that is powered in shutdown state and all power states while rest portions of the system are not powered in the shutdown state; a memory unit that is powered in sleep state to retain data in the memory unit; an input interface that is powered only in event detection state, in which at least one captured image is received from an image sensor, the event detection state beginning when a trigger signal is issued; an event monitor that detects motion in the captured image; a digital signal processor (DSP) that is powered only in computer vision state to perform image identification on the captured image if motion is detected; and an output interface is powered only in the computer vision state, a result of the DSP being outputted via the output interface.

Abstract: An always-on system with multi-layer power management includes an always-on portion that is powered in shutdown state and all power states while rest portions of the system are not powered in the shutdown state; a memory unit that is powered in sleep state to retain data in the memory unit; an input interface that is powered only in event detection state, in which at least one captured image is received from an image sensor, the event detection state beginning when a trigger signal is issued; an event monitor that detects motion in the captured image; a digital signal processor (DSP) that is powered only in computer vision state to perform image identification on the captured image if motion is detected; and an output interface is powered only in the computer vision state, a result of the DSP being outputted via the output interface.

Abstract: A photogravure process for an identification code includes providing a seamless steel tube as a press plate substrate; engraving an information of the identification code onto the press plate substrate; printing the information of the identification code on a plastic film made of PET to form an ink display layer; the plastic film made of PET being applied with a relative large pressing force to impress the ink in the shape of the information of the identification code, thereby forming an ink information layer; providing a layer of cellulose acetate arranged on the ink information layer for acting as a release layer; and providing a layer of hot-melt adhesive laminated beneath a ink display layer for acting as an adhesive layer. Therefore, the identification code printed has the benefits of solid and rich colors, clear graphics and letters, appropriate contrast, and realistic images.

Abstract: The invention provides a method for dynamically adjusting image frame rate, which includes: sequentially obtaining plural displacements; accumulating a count of the displacement is sequentially higher than a first threshold value, to increase an image frame rate if the count is larger than a first reference value; and accumulating a count of the displacement is sequentially lower than a second threshold value, to reduce the image frame rate if the accumulated count is larger than a second reference value.

Abstract: The invention provides an optical navigation method, which includes: sequentially obtaining plural images including a first image, a second image, and a third image; choosing a main reference block in the first image; comparing the main reference block and the second image by block matching comparison to determine a first motion vector; resizing the main reference block according to the first motion vector to generate an ancillary reference block having a size smaller than the main reference block; and comparing the ancillary reference block and the third image by block matching comparison to determine a second motion vector.

Abstract: The invention provides a method for dynamically adjusting image frame rate, which includes: sequentially obtaining plural displacements; accumulating a count of the displacement is sequentially higher than a first threshold value, to increase an image frame rate if the count is larger than a first reference value; and accumulating a count of the displacement is sequentially lower than a second threshold value, to reduce the image frame rate if the accumulated count is larger than a second reference value.

Abstract: The present invention discloses an optical remote control system, and a method for controlling a light source of the system. The system includes: a light source including a plurality of lighting units, the light source generating at least one light beam; an image sensor receiving an image including the light beam; and a processor determining a number or positions of the lighting units which are activated according to an area of the light beam in the image.

Abstract: The invention provides an optical navigation method, which includes: sequentially obtaining plural images including a first image, a second image, and a third image; choosing a main reference block in the first image; comparing the main reference block and the second image by block matching comparison to determine a first motion vector; resizing the main reference block according to the first motion vector to generate an ancillary reference block having a size smaller than the main reference block; and comparing the ancillary reference block and the third image by block matching comparison to determine a second motion vector.

Abstract: The present invention provides a motion detection device and a motion detection method having a rotation calibrating function. The motion detection device detects a relative motion of a DUD (device under detection) with respect to a reference light source. The motion detection device includes a rotation sensor, an image sensor, and a coordinate transfer unit. The rotation sensor is disposed on the DUD for detecting rotation of the DUD to generate rotation information. The image sensor captures an image generated by the reference light source, to obtain an absolute coordinate according to a coordinate system related to the image sensor. The coordinate transfer unit calibrates the absolute coordinate according to the rotation information to generate a calibrated coordinate.

Abstract: The present invention discloses a remote controllable video display system and a controller therefor, wherein positional information is generated by a sensor according to light from a light source. The controller includes a button with a predetermined function, wherein when the button is pressed or released, the status of the button (pressed or released) is outputted but (i) the positional information is not outputted or not processed within a predetermined period of time; or (ii) the positional information is not outputted or not processed when the remote controller has an acceleration larger than a predetermined value. Or, when the button is pressed once, the controller outputs double-click or multiple-click action information.

Abstract: The present invention discloses a remote controllable image display system, and a controller and a motion detection method for use in the system. The system includes: an image display showing images generated by a program; a light source generating at least a light beam; a controller controlling a current image according to its displacement or rotation and including at least one image sensor sensing the light beam to obtain a first frame having at least two light spots; a processor obtaining a first angle between a main operation surface of the controller and a basis plane according to the differences between the coordinates of the two light spots in the first frame.

Abstract: The present invention discloses a locus smoothing method, comprising: generating multiple locus points by movement of an object; obtaining corresponding coordinates of the locus points; calculating a moving average coordinate of the coordinates of the locus points by a moving average function, wherein an average number is used as a denominator; adaptively adjusting the average number according to a velocity of the object, wherein a lower average number is used when the velocity of the object is relatively faster, and a higher average number is used when the velocity of the object is relatively slower.

Abstract: The present invention discloses an optical remote control system, and a method for controlling a light source of the system. The system includes: a light source including a plurality of lighting units, the light source generating at least one light beam; an image sensor receiving an image including the light beam; and a processor determining a number or positions of the lighting units which are activated according to an area of the light beam in the image.

Abstract: The present invention discloses an optical pointer control system, and a method using in the same system. The system includes: an image display showing a frame having a pointer; a light source generating a light beam; a controller controlling the position of the pointer and including an image sensor receiving the light beam to obtain a image frame having a light spot; and a coordinate transformation processor calculating first coordinates of the light spot in a first coordinate system of the image frame and transferring the first coordinates into second coordinates according to a predetermined second coordinate system; wherein the image display shows the pointer on a corresponding position of the frame according to the second coordinates.

Abstract: The present invention discloses an object tracking apparatus, an interactive image display system using the object tracking apparatus, and methods thereof. The object tracking apparatus generates a control signal inputted to an image display apparatus to display an image in response to an action of an object. The object tracking apparatus includes: an image sensor device, which detects a predetermined pattern displayed by the image display apparatus to generate a sensed image; a coordinate information generation circuit, which generates coordinate information according to the sensed image; and a processing circuit, which generates a predetermined image data based on which the predetermined pattern is generated, wherein the processing circuit compares the coordinate information with the predetermined image data to generate a correction value.

Abstract: The present invention discloses a virtual multi-touch control apparatus and a method thereof. The virtual multi-touch control apparatus includes a virtual multi-touch control interface for generating a graphic display; one or more remote controller devices transmitting multiple remote control signals, the one or more remote controller devices being controllable by a user to interact with the virtual multi-touch control interface to generate multiple coordinates or an action command, wherein each remote control signal generates an object; a data format converter device converting the coordinate or action command into data with a format compatible to a physical touch control apparatus; and a processor for processing the converted data, wherein multiple object-tracking series corresponding to different objects are established, each object-tracking series including coordinates or an action command of the same object at different timings.

Abstract: A displacement estimation method is disclosed which includes: a signal capturing step for capturing a signal; a displacement estimation step for calculating a displacement based on a state change of the signal; and an output step for outputting the displacement, in which the displacement estimation step includes one or more of the steps of (A) consistency check to determine whether the state change of the signal is consistent with the waveform of the signal; (B) period prediction and compensation to count in the present period according to a proportional length of a previous period; and (C) adaptive threshold update to adjust the definition of the state change corresponding to the amplitude of the signal.

Abstract: The present invention discloses a virtual touch control apparatus and a method thereof. The virtual touch control apparatus includes a virtual touch interface for generating a graphic display; a remote controller device controllable by a user to interact with the virtual touch control interface, wherein the interaction between the remote controller device and the virtual touch control interface generates a coordinate or an action command; a data format converter device converting the coordinate or action command into data with a format compatible to a physical touch control apparatus; and a processor for processing the converted data.