Abstract: A method for flattening a three-dimensional shoe upper template is provided. The method includes providing a three-dimensional last model, obtaining a three-dimensional grid model, obtaining a three-dimensional thickened grid model, obtaining a two-dimensional initial-value grid model, and obtaining a two-dimensional grid model with the smallest energy value. A system and a non-transitory computer-readable medium for performing the method are also provided. The method makes it possible to precisely flatten a three-dimensional last model with a non-developable surface and thereby convert the three-dimensional last model into a two-dimensional grid model.

Abstract: An ultra-short focus projection lens is configured to receive an image beam from an image source side and project the image beam toward a projection surface. The ultra-short focus projection lens has an optical axis. The ultra-short focus projection lens includes a reflective optical element, a first lens group, a stop, and a second lens group arranged in sequence along the optical axis. The image beam from the image source side passes through the second lens group, the stop, and the first lens group in sequence, and is reflected by the reflective optical element and projected to the projection surface. The first lens group includes a plurality of lenses having diopters. The second lens group 10 includes a plurality of lenses having diopters. The first lens group and the second lens group include ten lenses having diopters in total. A projection device is also provided.

Abstract: A projection lens projecting an image beam provided by a light valve onto a screen is provided. The projection lens includes first to fourth lenses in order from a screen side to a display side along an optical axis. Each lens has a screen side surface facing the screen side and allowing the image beam to pass, and a display side surface facing the display side and allowing the image beam to pass. The first and third lenses have a negative refractive power, and the second and fourth lenses have a positive refractive power. The projection lens satisfies 2<TTL/f<5. TTL is a distance from the screen side surface of the first lens to the display side surface of the fourth lens on the optical axis. f is an effective focal length of the projection lens. The projection lens covers a wide range of operating temperatures while being lightweight.

Abstract: A fan-out semiconductor device includes stacked semiconductor dies having die bond pads arranged in columns exposed at a sidewall of the stacked semiconductor dies. The stacked dies are encapsulated in a photo imageable dielectric (PID) material, which is developed to form through-hole cavities that expose the columns of bond pads of each die at the sidewall. The through-hole cavities are plated or filled with an electrical conductor to form conductive through-holes coupling die bond pads within the columns to each other.

Abstract: Devices and methods are described for reducing etching due to Galvanic Effect within a printed circuit board (PCB) that may be used in an electronic device. Specifically, a contact trace is coupled to a contact finger that has a substantially larger surface area than the contact trace. The contact finger is configured to couple the electronic device to a host device. The contact trace is electrically isolated from the rest of the PCB circuitry during a fabrication process by a separation distance between an exposed portion of the contact trace and an impedance trace. The contact finger and the exposed portion of the contact trace are plated with a common material to reduce galvanic etching of the contact trace during fabrication. The contact trace is then connected to the impedance trace using a solder joint.

Abstract: A board adjuster is provided, including an adjusting member and a positioning member. The adjusting member includes a toggling portion and an insertion portion, the insertion portion has two restricting members extending oppositely, the toggling portion has two recessive portions, and the insertion portion is located between two recessive portions. The positioning member has a slot. The insertion portion is for being inserted into a gap between two boards, the positioning member is for abutting against and between the two boards and the toggling portion, the insertion portion is disposed through the slot, the positioning member is disposed through the two recessive portions, the positioning member abuts against the two recessive portions so that the two restricting members respectively abut against a side of one of the two boards away from the toggling portion.

Abstract: A board adjuster is provided, including an adjusting member and a positioning member. The adjusting member includes a toggling portion and an insertion portion, the insertion portion has two restricting members extending oppositely, the toggling portion has two recessive portions, and the insertion portion is located between two recessive portions. The positioning member has a slot. The insertion portion is for being inserted into a gap between two boards, the positioning member is for abutting against and between the two boards and the toggling portion, the insertion portion is disposed through the slot, the positioning member is disposed through the two recessive portions, the positioning member abuts against the two recessive portions so that the two restricting members respectively abut against a side of one of the two boards away from the toggling portion.

Abstract: A printer includes a base, a cover, a feeding roller, a support member, a rotating member and a driving member. The cover is pivotally connected to the base. The feeding roller includes an axle pivotally connected to the cover. The support member is disposed on the base. The rotating member is pivotally connected to the support member and includes an engaging portion and a pushing portion. The driving member is disposed corresponding to the rotating member. When the cover is closed with respect to the base, the feeding roller abuts against the rotating member and the axle is engaged with the engaging portion. When the driving member drives the rotating member to rotate, the axle is released from the engaging portion and the pushing portion pushes against the cover so that the cover is opened with respect to the base.

Abstract: A cursor control apparatus and a cursor control method thereof are provided. Adjust a displacement value according to a DPI ratio of an extending display unit to a benchmark display unit in an axial direction to generate a modified displacement value, and move a cursor on the extending display unit according to the modified displacement value, so that the velocities of the cursor on the extending display unit and the benchmark display unit are substantially equal.

Abstract: A cursor control apparatus and a cursor control method thereof are provided. Adjust a position of a cursor on a second axial direction according to a DPI ratio on a first axial direction of display units with different DPI values, so as to make the cursor move smoothly between the display units with different DPI values, in which the first axial direction is perpendicular to the second axial direction, and the display units with different DPI values are arranged along the first axial direction.

Abstract: A cursor control apparatus and a cursor control method thereof are provided. Adjust a position of a cursor on a second axial direction according to a DPI ratio on a first axial direction of display units with different DPI values, so as to make the cursor move smoothly between the display units with different DPI values, in which the first axial direction is perpendicular to the second axial direction, and the display units with different DPI values are arranged along the first axial direction.

Abstract: A cursor control apparatus and a cursor control method thereof are provided. Adjust a displacement value according to a DPI ratio of an extending display unit to a benchmark display unit in an axial direction to generate a modified displacement value, and move a cursor on the extending display unit according to the modified displacement value, so that the velocities of the cursor on the extending display unit and the benchmark display unit are substantially equal.

Abstract: The present invention is to provide a power converter, which includes a half-bridge circuit parallel-connected to an input voltage and having two series-connected power switches, an LLC resonant circuit formed by a resonant inductor, magnetic inductance of a primary winding and a resonant capacitor, a current-circulating circuit parallel-connected to the half-bridge circuit and having two series-connected rectifiers, and a full-wave rectification circuit connected to a secondary winding for generating an output voltage across an output capacitor. The LLC resonant circuit is parallel-connected to one of the power switches, and the line between the two rectifiers is cross-connected to the line between the resonant inductor and the primary winding.

Abstract: The present invention is to provide a series resonant converter, which includes a transformer, two power switches connected to primary side of the transformer, a resonant control chip having two control pins connected to gates of the two power switches respectively, a resonant capacitor having one end connected to one end of the primary side and the other end connected to source of one power switch, a resonant inductor having one end connected to the other end of the primary side and the other end connected to a line between the two power switches, and at least one bypass resistor connected in parallel to the resonant capacitor, so as to allow voltage of the resonant capacitor to be rapidly released to ground when the converter is turned off and effectively lower inrush current of the resonant capacitor generated at an instant when the converter is turned on from off.

Abstract: In an optimal recording power calibration method for improving seeking stability on a recording power calibration area, a specific area serves as a data recording area during an optimal recording power calibration, wherein a length of the specific area is such that a plurality of times of optimal recording power calibrations can be performed. The method includes: an optimal recording power calibration step of recording, with different recording power, a first length of calibration data in the specific area, and calibrating optimal recording power, wherein a data sector recorded in this step is defined as a calibration recording sector; and a data recording step of recording, with data recording power, a second length of information having a logical address beside the calibration recording sector of the specific area, wherein a data sector recorded in the step is defined as an information recording sector.

Abstract: A flat panel display structure and a manufacturing method thereof are provided. The flat panel display structure includes a light guide plate made of optical glass, an optical film disposed on the light guide plate and glued thereon through a first glue layer, a display panel having a light incident surface facing the optical film and a display surface with an active area located at the central portion thereof, a second glue layer gluing the optical film and the display panel so as to cover the light incident surface including the projection of the display area thereon, and a light module emitting lights toward the light guide plate. The refractive indices of the first glue layer and the second glue layer are smaller than or equal to that of the light guide plate and the optical film.

Abstract: In an optimal recording power calibration method for improving seeking stability on a recording power calibration area, a specific area serves as a data recording area during an optimal recording power calibration, wherein a length of the specific area is such that a plurality of times of optimal recording power calibrations can be performed. The method includes: an optimal recording power calibration step of recording, with different recording power, a first length of calibration data in the specific area, and calibrating optimal recording power, wherein a data sector recorded in this step is defined as a calibration recording sector; and a data recording step of recording, with data recording power, a second length of information having a logical address beside the calibration recording sector of the specific area, wherein a data sector recorded in the step is defined as an information recording sector.

Abstract: The present invention is to provide a series resonant converter, which includes a transformer, two power switches connected to primary side of the transformer, a resonant control chip having two control pins connected to gates of the two power switches respectively, a resonant capacitor having one end connected to one end of the primary side and the other end connected to source of one power switch, a resonant inductor having one end connected to the other end of the primary side and the other end connected to a line between the two power switches, and at least one bypass resistor connected in parallel to the resonant capacitor, so as to allow voltage of the resonant capacitor to be rapidly released to ground when the converter is turned off and effectively lower inrush current of the resonant capacitor generated at an instant when the converter is turned on from off.

Abstract: In an optimal recording power calibration method for improving seeking stability on a recording power calibration area, a specific area serves as a data recording area during an optimal recording power calibration, wherein a length of the specific area is such that a plurality of times of optimal recording power calibrations can be performed. The method includes: an optimal recording power calibration step of recording, with different recording power, a first length of calibration data in the specific area, and calibrating optimal recording power, wherein a data sector recorded in this step is defined as a calibration recording sector; and a data recording step of recording, with data recording power, a second length of information having a logical address beside the calibration recording sector of the specific area, wherein a data sector recorded in the step is defined as an information recording sector.

Abstract: A method for detecting a defect of an optical disc includes steps of: confirming an optical pickup head being accessing data in a track on state; determining a defective region of the optical disc according to a peak-to-peak value of a wobble signal; and, maintaining the optical pickup head being unchanged when the defective region is detected.