Abstract: A pointer positioning method of a handheld pointer device, which includes capturing a first image frame containing a reference point to compute a first pointing coordinate according to the image position of the reference point in the first image frame; generating a cursor parameter of a cursor according to the first pointing coordinate; when the handheld pointer device enters a pointer-lock mode, records the first pointing coordinate and positions the cursor at the first pointing coordinate on a display apparatus; when the handheld pointer device exits the pointer-lock mode, captures a second image frame to compute a second pointing coordinate according to the image position of the reference point in the second image frame to obtain a displacement vector between the first and the second pointing coordinates; generating the cursor parameter and controlling the movement of the cursor according to the displacement vector and the first pointing coordinate.

Abstract: A light source determining apparatus for determining if a light source is a specific type light source is disclosed. The light source determining apparatus comprises: a light filtering device, comprising at least one first region and at least one second region, wherein the first region can pass only light with a specific frequency, where the second region can pass not only light with the specific frequency but also light with other frequencies; and a determining unit, for determining if the light source is the specific type light source, according to luminosity that the light source respectively generates for the first region and the second region.

Abstract: A foldable table includes two runners and an injection mold table frame including a tabletop and a runner arrangement integrated with the tabletop. The tabletop includes a surrounding rim downwardly extended from a peripheral of the tabletop, wherein the runners are extended along two longitudinal sides of the tabletop to align with the surrounding rim. The runner arrangement includes a plurality of injection attachments integrally and spacedly extended from an inner side of the surrounding rim. A plurality of fasteners fasten at the injection attachments respectively through each of the runners to securely lock up the runners at the longitudinal sides of the tabletop respectively.

Abstract: The present invention discloses an object tracking apparatus including a reference object, an optical sensor and a controller. The reference object has a plurality of light emitting devices, for generating an optical signal. The optical sensor is for detecting the optical signal and generating an identification signal in response to the optical signal. The controller is for generating a control signal according to the identification signal and outputting the control signal to the reference object, thereby adaptively adjusting a light emitting number or light emitting intensity of the plurality of light emitting devices. The present invention discloses a method for controlling an object tracking apparatus.

Abstract: A foldable table includes a first tabletop panel, a second tabletop panel, a first peripheral edge rim, a second peripheral edge rim, and a foldable frame. The foldable frame includes a reinforcing frame which includes first through fourth elongated reinforcing member spacedly mounted along two longitudinal sides of the first receiving cavity and the second receiving cavity respectively, a first and a second leg frame pivotally mounted on the first receiving cavity and the second receiving cavity respectively, and a hinge arrangement. The hinge arrangement includes a first connecting joint, a second connecting joint, and a first and a second locker device coupled to the first connecting joint and the second connecting joint respectively, wherein the first locker device and the second locker device are arranged to operate between a locked position and an unlock position.

Abstract: A handwriting system includes a light source module, an image sensing apparatus and a processing circuit. The light source module is configured to provide a light source to illuminate an object on a plane. The image sensing apparatus is disposed on the plane and configured to capture an image of the object reflecting light emitted by the light source. The processing circuit is electrically connected to the image sensing apparatus and configured to receive the image captured by the image sensing apparatus, analyze the shape of each of light spot(s) in the captured image and screen out the light spot(s) not conforming to the shape of the object. Another handwriting system and two handwriting system operation methods are also provided.

Abstract: An optical tracking device includes a light source, an image sensor and a processing unit. The light source emits light at a lighting frequency. The image sensor outputs an operating image when the light source is being turned on and outputs a background image when the light source is being turned off. The processing unit is configured to obtain background information from the background image, calculate a differential image of the operating image and the background image, obtain object information from the differential image and compare the background information and the object information thereby removing background noise.

Abstract: A system for preventing a computer worm from attacking a private computer network through a virtual private network (VPN) connection includes a client computer and a VPN server. The client computer detects connection attempts to the VPN server. The client computer consults application rules to determine whether an application program running in the client computer and connecting to the VPN server is specifically authorized to connect to the VPN server. The client computer can receive the application rule automatically from the VPN server or manually from a user.

Abstract: Provided in the present invention are anti-Mycoplasma spp. subunit vaccines, especially proteins suitable for being used as the active ingredient of the Mycoplasma spp. subunit vaccines, and a vaccine prepared therefrom. Upon experimenting, it is confirmed that the proteins can elicit an immune response having sufficient strength to avoid the infection of Mycoplasma spp. in pigs. The vaccine can comprise one of the aforementioned proteins as an active ingredient, or can comprise two or more of the proteins to form a form of cocktail vaccine. The vaccine of the present invention is not only more safe than conventional vaccines, but also has equivalent or even better immune effects.

Abstract: An optical touch control method includes steps of: providing a bright background from at least one edge of a touch surface in a first period; providing illumination light to the touch surface in a second period; capturing a first image of an indicator object blocking a portion of the bright background in the first period; and capturing a second image of the indicator object reflecting the illumination light in the second period. An optical touch system is also provided.

Abstract: A self-adjusting power device for high efficiency electrical discharge machining and method thereof is disclosed. A high-voltage arc unit and a low-voltage discharge unit provide a high voltage arc pulse and a low voltage discharge pulse to an electrode respectively. The electrode machines a workpiece and feeds back a gap voltage to a discharge pulse generation unit. The discharge pulse generation unit determines whether the gap voltage is lower than a predetermined voltage or not. If yes, a discharge channel between the electrode and the workpiece is conducted, and the discharge pulse generation unit shuts down the high-voltage arc unit and the low-voltage discharge unit is still operating at ON time and shuts down at OFF time. If no, looping the determination of the discharge pulse generation unit. Therefore, discharge machining energy is accurately controlled and high efficient power saving is achieved.

Abstract: A method and a system, for offsetting measurement of machine tool, includes following steps. A tool seat is chosen, a first coordinate is set based on a first datum mark of the tool seat. There is a total tool seat assembling length in between the first datum mark and the tool seat. A tool is chosen, assembled in the tool seat, and includes a total tool length. A second coordinate is set based on a second datum mark of a measuring unit. The tool seat is moved to make a machining end of the tool contact with the second coordinate to obtain a relative total length in between the first and the second coordinate. The total tool length subtracts from the relative total length equals an assembled offset length. The total tool seat assembling length subtracts from the relative total length equals and obtains a tool assembling length.

Abstract: A position detecting system with a position information providing apparatus, a transceiver, and a processor. The position information providing apparatus comprises a light emitting-out side having at least one position information region distributed on an outer surface of the light emitting-out side. The position information region comprises materials which are distributed on the outer surface and provide the position information. The light has position information from the position information region when the light emits out from at least part of the light emitting-out side. The transceiver receives the light with the position information. The processor determines a relative position between the transceiver and the position information providing apparatus according to the position information received by the transceiver.

Abstract: An electronic system includes an image-sensing device and a processor coupled with the image-sensing device, The image-sensing device includes an image-sensing area configured to generate a picture. The picture includes a noisy region. The processor is configured to select a tracking region from the portion of the picture outside of the noisy region. The tracking region corresponds to an operative region of the image sensing area.

Abstract: A method of folding up a table, which includes a first tabletop panel and a second tabletop panel, two leg frames foldably mounted at said first and second tabletop panels respectively, and two connecting joints pivotally coupled between said first and second tabletop panels enabling said first and second tabletop panels to be pivotally folded between a folded condition and an unfolded condition, wherein a pivotal movable gap is formed at each of the connecting joints to enable a pivotal movement said first and second tabletop panels to be pivotally folded between said folded condition and said unfolded condition, includes the steps of (a) pivotally folding said first tabletop panel and said second tabletop panel to said unfolded condition; and (b) locking up the pivotal movement between said first and second tabletop panels in said unfolded condition for preventing a lateral movement of each of said connecting joints through said pivotal movable gap thereof.

Abstract: The subject technology pertains to an herbal vaporization apparatus including an electric heat base comprising a glass pass-through tube, and a hydratube having a first end a second end, wherein the hydratube is configured to be removably coupled with the electric heat base at the second end to place the hydratube in fluidic communication with the glass pass-through tube. The electric heat base can be configured to be coupled to the hydratube such that the hydratube is vertically mounted on top of the electric heat base. The electric heat base can include a glass pass-through tube including a plurality of chambers separated by constrictions and configured to receive and transmit a volume of gas, and a heating element disposed adjacent to the glass pass-through tube to heat the volume of gas received by the glass pass-through tube. Furthermore, the herbal vaporization apparatus can also include an herbal containment unit.

Abstract: There is provided an image positioning method including the steps of: capturing an image frame with an image sensor; identifying at least on object image in the image frame; comparing an object image size of the object image with a size threshold and identifying the object image having the object image size larger than the size threshold as a reference point image; and positioning the reference point image. There is further provided an interactive imaging system.

Abstract: The present disclosure provides an object detection method including: pre-storing a lookup table of touch reference values, wherein the lookup table of touch reference values records a plurality of touch reference values associated with image positions of a plurality of calibration object images formed in calibration images captured by a first image sensor; capturing a first image, wherein the first image has at least an object image corresponding to a pointer formed therein; generating a first light distribution curve according to the first image; defining a first detection region in the first light distribution curve; obtaining at least one touch reference value associated with the object image using the lookup table of touch reference values; comparing at least one brightness value within the first detection region of the first light distribution curve with the at least one touch reference value obtained.

Abstract: The present invention relates to a method for manufacturing a hard, water-resistant anti-fog coating, and particularly relates to a method for manufacturing a hard, water-resistant anti-fog coating on plastic material. In this method, an organic-inorganic hard adhesion layer and a hydrophilic anti-fog coating film are prepared for manufacturing a hard, water-resistant anti-fog coating. Both of the organic-inorganic hard adhesion layer and the hydrophilic anti-fog coating have C?C double bonds. Therefore, the organic-inorganic hard adhesion layer and the hydrophilic anti-fog coating are adhered to each other tightly. It brings high hardness, high water resistance and good anti-fog effect.

Abstract: The present invention discloses an electronic system and a pointing device thereof. The pointing device includes an image sensor and a processor. The image sensor sequentially generates a first image frame and a second image frame, wherein the first image frame has two images related to a sensed target, and the second image frame has one image related to the sensed target. The processor determines one image position representing the sensed target using the first image frame, and subsequently determines one image displacement using the first image frame and the second image frame.