Abstract: A dual-band antenna includes a RF connector, a radiation element, and a ground surface. The RF connector is connected to a RF receiver. The radiation element includes a first radiation element and a second radiation element. The first radiation element and the second radiation element are both connected to the RF connector. The RF connector is connected to the ground surface.

Abstract: A miniaturizing method for a patch antenna includes following steps: providing a patch antenna comprising a radiator; setting at least one through hole on the radiator to change the current distance of the patch antenna, the changed current distance being equal to an expected current distance; and forming a miniature patch antenna.

Abstract: A multiband antenna includes a conductive sheet, a feeding point, and a grounding point. The conductive sheet defines a first slot, a second slot, a third slot, a fourth slot, a fifth slot, a sixth slot, and a seventh slot thereon. The second slot and the third slot extend from a same short side of the first slot and are parallel to each other. The fourth slot, the fifth slot, the sixth slot, and the seventh slot extend perpendicularly from a short side of the third slot away from the first slot in sequence. The feeding point is formed on the conductive sheet at a long side of the first slot away from the third slot. The grounding point is formed on the conductive sheet at a margin of the slots different from the location of the feeding point.

Abstract: A multiband antenna includes a first conductive sheet, a second conductive sheet, and a feeding point. The second conductive sheet is a square sheet defining a cutout on a side thereof. The first conductive sheet is square, and includes a first side, a second side, a third side, and a fourth side connected in sequence. The first conductive sheet is received in the cutout and separated from the second conductive sheet. The feeding point is formed on the fourth side of the first conductive sheet facing away from the second conductive sheet.

Abstract: An antenna includes a metallic sheet defining a first slot, a second slot, a third slot parallel to the first slot, a fourth slot parallel to the second slot, and a fifth slot parallel to the third slot. The second slot perpendicularly connects the first slot to the third slot and has a length smaller than that of the fourth slot. The third slot has a length greater than that of the first slot. The fourth slot extends perpendicularly from a side of the third slot away from the second slot. The fifth slot extends perpendicularly from an end of the fourth slot away from the third slot. The metallic sheet includes a first longitudinal side and a second longitudinal side opposite to the first longitudinal side. A feeding point is formed on the first longitudinal side and a grounding point is formed on the second longitudinal side.

Abstract: A multiband antenna includes a conductive sheet, a feeding point, and a grounding point. The conductive sheet defines a first slot, a second slot, a third slot, a fourth slot, a fifth slot, a sixth slot, and a seventh slot thereon. The second slot and the third slot extend from a same short side of the first slot and are parallel to each other. The fourth slot, the fifth slot, the sixth slot, and the seventh slot extend perpendicularly from a short side of the third slot away from the first slot in sequence. The feeding point is formed on the conductive sheet at a long side of the first slot away from the third slot. The grounding point is formed on the conductive sheet at a margin of the slots different from the location of the feeding point.

Abstract: A digital image composition method is adapted to eliminate a ghost image produced by a digital image-capturing apparatus due to handshakes in shooting. The method includes the steps. In a pre-shooting process, a base image and a comparison image are respectively captured. A base pixel is selected from the base image, and a core window is set with the base pixel at the center. A comparison pixel is selected from the comparison image, and a search window is set with the comparison pixel at the center. Each area of the search window is compared through the core window, and an absolute error sum value between the base image and the comparison image is calculated. It is determined how to change the brightness of the base pixel according to the normalized region difference value. The above steps are repeated to adjust each pixel in the base image.

Abstract: An antenna includes a ground plane, a match portion, and a radiation portion. The ground plane is used for grounding. The match portion is parallel to the ground plane, and is connected to the ground plane. The radiation portion is connected to one end of the match portion, and extends upwardly with respect to the ground plane. The radiation portion can be a spiral element or a meandrous element. The radiation portion can also include a main body extending upwardly with respect to the ground plane, and a plurality of branches extending parallelly along a same direction from the main body.

Abstract: An antenna includes a metallic sheet defining a first slot, a second slot, a third slot parallel to the first slot, and a fourth slot parallel to the second slot. The second slot perpendicularly connects the first slot to the third slot and has a length greater than that of the fourth slot. The third slot has a length greater than that of the first slot. The fourth slot extends perpendicularly from a side of the third slot away from the second slot. A feeding point is formed on the metallic sheet at a side of the fourth slot away from the third slot. A grounding point is formed on the metallic sheet at a side of the fourth slot away from the third slot at a position different from that of the feeding point.

Abstract: An illumination apparatus is provided. The apparatus includes a power supply unit, a switch unit, a bulb, a wireless unit, and a control unit. The power supply unit is for supplying power. The switch unit is for opening or closing a circuit between the power source unit and the bulb. The wireless unit is for receiving wireless signals from an external control device, and generating a first control signal when receiving the wireless signals. The control unit is for generating a close signal according to the first control signal. The switch unit closes the circuit between the power source unit and the bulb according to the close signal to enable the bulb to keep emitting light; and opens the circuit between the power source unit and the bulb if no receiving the close signal, thereby keeping the bulb extinguishing. A related control device for controlling the apparatus is also provided.

Abstract: A digital image processing method for correcting a shaking blur corrects a blurred image caused by a shake when a user shoots an image with a digital camera, which includes the following steps obtaining a safe shutter time of the digital camera; performing an exposure adjustment procedure, for adjusting an aperture and a ISO speed of the digital camera respectively, and obtaining a shutter time of the digital camera after being adjusted; performing a shooting procedure; shooting a plurality of digital images, if the shutter time of the digital camera is greater than the safe shutter time; and then performing an image compensation procedure according to the digital images, to align the same image object in the digital images and then to overlay each pixel of the digital images one by one, thereby outputting an output image.

Abstract: A dual frequency antenna includes a first scythe-shaped arm and a second scythe-shaped arm. The first scythe-shaped arm is configured for operating in a first band. The second scythe-shaped arm is configured for operating in a second band and includes an inverted-T-shaped strip with a foot of the inverted-T-shaped strip connected to the second scythe-shaped arm. The first scythe-shaped arm is attached to the second scythe-shaped arm at an apex. A head of the inverted-T-shaped strip is closer to the apex than the foot. A communication system is also provided.

Abstract: An antenna includes a ground plane, a match portion, and a radiation portion. The ground plane is used for grounding. The match portion is parallel to the ground plane, and is connected to the ground plane. The radiation portion is connected to one end of the match portion, and extends upwardly with respect to the ground plane. The radiation portion can be a spiral element or a meandrous element. The radiation portion can also include a main body extending upwardly with respect to the ground plane, and a plurality of branches extending parallelly along a same direction from the main body.

Abstract: A determination method for white-point and a correction method of the white balance are disclosed. In the determination method for white-point of the white balance, first gray cards with different reflection coefficients are detected according to the properties of an image sensing device. Next, the white-point gray line of a first color temperature and the white-point gray line of a second color temperature are intersected on a white-point plane to form a fan area, so as to set the white-point range of the low saturation of the image sensing device. Next, the vertical projection for an image datum is calculated to obtain a placement datum on the white-point plane, and a difference value between the image datum and the placement datum is calculated. Finally, whether the image datum is a white-point is determined according to the difference value and relationship between the placement datum and the fan area.

Abstract: A preventive maintenance tool which may be installed on a metal chemical vapor deposition (CVD) chamber to prevent escape of contaminating and toxic gases from the chamber interior during preventative maintenance (PM) cleaning of the chamber. The tool comprises a cylindrical tool body which fits to the lid O-ring of the chamber to form a gas-tight seal therewith; a vacuum line connector nipple extending from the body for connection to a vacuum line; and a lid panel rotatably mounted in the body and fitted with a pair of hinged closing panels for reversibly sealing the chamber and facilitating chamber cleaning.

Abstract: A preventative maintenance tool which may be installed on a metal chemical vapor deposition (CVD) chamber to prevent escape of contaminating and toxic gases from the chamber interior during preventative maintenance (PM) cleaning of the chamber. The tool comprises a cylindrical tool body which fits to the lid O-ring of the chamber to form a gas-tight seal therewith; a vacuum line connector nipple extending from the body for connection to a vacuum line; and a lid panel rotatably mounted in the body and fitted with a pair of hinged closing panels for reversibly sealing the chamber and facilitating chamber cleaning.