Abstract: The present disclosure provides a semiconductor structure with having a source/drain feature with a central cavity, and a source/drain contact feature formed in central cavity of the source/drain region, wherein the source/drain contact feature is nearly wrapped around by the source/drain region. The source/drain contact feature may extend to a lower most of a plurality semiconductor layers.

Abstract: A switching control circuit for use in controlling a resonant flyback power converter generates a first driving signal and a second driving signal. The first driving signal is configured to turn on the first transistor to generate a first current to magnetize a transformer and charge a resonant capacitor. The transformer and charge a resonant capacitor are connected in series. The second driving signal is configured to turn on the second transistor to generate a second current to discharge the resonant capacitor. During a power-on period of the resonant flyback power converter, the second driving signal includes a plurality of short-pulses configured to turn on the second transistor for discharging the resonant capacitor. A pulse-width of the short-pulses of the second driving signal is short to an extent that the second current does not exceed a current limit threshold.

Abstract: A resonant flyback power converter includes: a first and a second transistors which form a half-bridge circuit for switching a transformer and a resonant capacitor to generate an output voltage; a current-sense device for sensing a switching current of the half-bridge circuit to generate a current-sense signal; and a switching control circuit generating a first and a second driving signals for controlling the first and the second transistors. The turn-on of the first driving signal controls the half-bridge circuit to generate a positive current to magnetize the transformer and charge the resonant capacitor. The turn-on of the second driving signal controls the half-bridge circuit to generate a negative current to discharge the resonant capacitor. The switching control circuit turns off the first transistor when the positive current exceeds a positive-over-current threshold, and/or, turns off the second transistor when the negative current exceeds a negative-over-current threshold.

Abstract: A package structure and the manufacturing method thereof are provided. The package structure includes a first package including at least one first semiconductor die encapsulated in an insulating encapsulation and through insulator vias electrically connected to the at least one first semiconductor die, a second package including at least one second semiconductor die and conductive pads electrically connected to the at least one second semiconductor die, and solder joints located between the first package and the second package. The through insulator vias are encapsulated in the insulating encapsulation. The first package and the second package are electrically connected through the solder joints. A maximum size of the solder joints is greater than a maximum size of the through insulator vias measuring along a horizontal direction, and is greater than or substantially equal to a maximum size of the conductive pads measuring along the horizontal direction.

Abstract: Image dewarping includes capturing a source image from a camera, selecting an input row of pixels from the source image, if the input row of pixels comprises a plurality of input pixels in a region of interest in the source image, storing the plurality of input pixels to a memory to generate an input segment of pixels, when a plurality of pixels required to generate an output row of pixels are all stored in the memory, reading from the memory the plurality of pixels corresponding to the output row of pixels, and performing coordinate transformation on the plurality of pixels to generate the output row of pixels, and when coordinate transformation has been completed on the plurality of pixels, releasing from the memory an input segment of pixels of the plurality of input segments of pixels that does not correspond to other output rows of pixels.

Abstract: A projector focusing method includes acquiring a plane angle of a light beam and acquiring a first distance and a second distance between two sides of a light beam edge displayed on a projection plane and a time of flight device after the time of flight device emits the light beam to the projection plane, acquiring a plane equation of the projection plane according to the first distance and the second distance, acquiring an optical axis vector of a digital micro-mirror device (DMD) disposed inside the projector, designating target coordinates of the DMD, converting the target coordinates to the projection target coordinates on the projection plane according to the plane equation, acquiring an customized emitting vector according to the projection target coordinates and a lens position of the projector, and acquiring an ideal focal distances of the projector according to the customized emitting vector and the optical axis vector.

Abstract: A projector focusing method includes acquiring a plane angle of a light beam and acquiring a first distance and a second distance between two sides of a light beam edge displayed on a projection plane and a time of flight device after the time of flight device emits the light beam to the projection plane, acquiring a plane equation of the projection plane according to the first distance and the second distance, acquiring an optical axis vector of a digital micro-mirror device (DMD) disposed inside the projector, designating target coordinates of the DMD, converting the target coordinates to the projection target coordinates on the projection plane according to the plane equation, acquiring an customized emitting vector according to the projection target coordinates and a lens position of the projector, and acquiring an ideal focal distances of the projector according to the customized emitting vector and the optical axis vector.

Abstract: A projection system includes a projector, a depth sensor, an inertia measurement unit and a processor. The depth sensor and the inertia measurement unit are fixed at the projector. A projection method includes the inertia measurement unit performing a 3-axis acceleration measurement to generate an orientation of the projector, the depth sensor detecting a plurality of coordinates of a plurality of points on a projection surface, the processor performing a keystone correction according to at least the plurality of coordinates of the plurality of points on the projection surface to generate a calibrated projection region, the processor generating a set of data according to at least the orientation of the projector, the calibrated projection region and the plurality of coordinates, and the projector projecting a pre-warped image onto the projection surface according to the set of data.

Abstract: A phenanthroindolizidine and phenanthroquinolizidine alkaloid having a hydroxyl group on the phenanthrene ring thereof was synthesized, which exhibits potent activity as an anticancer agent against, such as breast cancer, lung cancer, and prostate cancer.

Abstract: A phenanthroindolizidine and phenanthroquinolizidine alkaloid having a hydroxyl group on the phenanthrene ring thereof was synthesized, which exhibits potent activity as an anticancer agent against, such as breast cancer, lung cancer, and prostate cancer.

Abstract: An automotive imaging system may include image sensors that capture images from a vehicle's surroundings. The vehicle's chassis may partially obstruct the environment from the view of the image sensors. The imaging system may include processing circuitry that receives image frames from the image sensors and process the image frames to generate image data portraying blocked portions of the vehicle's surrounding environment. The processing circuitry may generate the image data during movement of the vehicle by combining time-delayed image data from the sensors with current image data from the sensors.

Abstract: The present disclosure relates to methods and systems for synthesis of bridged-hydropentacene, hydroanthracene and hydrotetracene from the precursor compounds pentacene derivatives, tetracene derivatives, and anthracene derivatives. The invention further relates to methods and systems for forming thin films for use in electrically conductive assemblies, such as semiconductors or photovoltaic devices.

Abstract: A camera image calibrating system applicable to a transportation vehicle including at least one image capturing unit, direction sensing units and a processing unit is provided. The image capturing unit is disposed on the transportation vehicle according to a height to preview an image. The direction sensing units are disposed on the transportation vehicle and the image capturing unit to obtain a vehicle directional angle and an image capturing directional angle. The processing unit calculates an image transformation relationship and causes the image to comply with an image preset condition. The processing unit determines an offset angle of the image capturing unit according to the image, the vehicle directional angle and the image capturing directional angle, and further calculates the image transformation relationship according to the height, the offset angle and the image, in a static calibration procedure. A method of calibrating camera images is also provided.

Abstract: The present disclosure relates to methods and systems for synthesis of bridged-hydropentacene, hydroanthracene and hydrotetracene from the precursor compounds pentacene derivatives, tetracene derivatives, and anthracene derivatives. The invention further relates to methods and systems for forming thin films for use in electrically conductive assemblies, such as semiconductors or photovoltaic devices.

Abstract: The present disclosure relates to methods and systems for synthesis of bridged-hydropentacene, hydroanthracene and hydrotetracene from the precursor compounds pentacene derivatives, tetracene derivatives, and anthracene derivatives. The invention further relates to are methods and systems for forming thin films for use in electrically conductive assemblies, such as semiconductors or photovoltaic devices.

Abstract: Methods for synthesizing 1,4-(ketone or ketal) bridged and/or 5,14-(ketone or ketal) bridged hydropentacenes useful as soluble precursors for formation of pentacene or substituted (e.g., halo) pentacenes; precursor compounds formed thereby; methods for preparing form the precursor compounds conductive thin films comprising pentacene or a substituted pentacene, and articles including such thin films are described. Also described are tetracene and anthracene derivatives which should also be useful in the formation of conductive thin films, among other uses.

Abstract: A video puzzle cube game includes a plurality of keys controlled to drive a program to show a hexahedron pattern, a menu and a field on a screen display, said hexahedron pattern having six sides, each side being divided into nine equal divisions, each division being divided into nine six blanks respectively filled with or for filling with either of six different unit squares alternatively given by said program through said field, by means of the control of said keys.