摘要:
A highly reliable optical add/drop device is described. The optical add/drop device has an external tube and a ring, wherein the external tube and the ring are made of metallic material. A WDM filter is fixed in the ring. The ring is inserted in the external tube at the middle portion and fixed therein by soft solder technique. A single fiber collimator and a dual fiber collimator are respectively coupled with the opposite surfaces of the filter, and aligned in the external tube. Additionally, the single and dual fiber collimators are also fixed therein by soft solder technique, as two metal tubes respectively hold the single and dual fiber collimators. In the invention, the WDM filter is rigidly fixed to avoid tilting during temperature variation. Moreover, the invention provides an optical add/drop device with low insertion loss and reflection loss.
摘要:
A micro-electro-mechanical systems (MEMS) package includes a MEMS microphone device. The MEMS microphone device has a first substrate and at least a sensing element on the first substrate wherein a first chamber in the MEMS microphone device is connected to the sensing element. A second substrate is disposed over the MEMS microphone device to provide a second chamber in the second substrate over the sensing element opposite to the first chamber.
摘要:
A method for forming a micro-electro-mechanical systems (MEMS) package includes following steps. A plurality of MEMS units are formed on a substrate, and each of the MEMS units includes at least a MEMS sensing element and a first chamber over the MEMS sensing element. The MEMS units include electric connection pads. A plurality of covering units are formed correspondingly over the MEMS units. Each of the covering units provides a second chamber over the MEMS sensing element opposite to the first chamber. The covering units are adhered to the MEMS units by an adhesive material. The MEMS units are diced into singulated units.
摘要:
A chip on film (COF) trace routing method for EMI reduction includes: providing a flexible circuit board; mounting a chip that has a first signal pad, a second signal pad and a ground pad on the flexible circuit board; and forming a first signal trace, a second signal trace, a first ground trace and a second ground trace on the flexible circuit board. The first signal trace and the second signal trace are electrically connected to the first signal pad and the second signal pad respectively. The first ground trace and the second ground trace are both electrically connected to the ground pad. The first signal trace and the second signal trace are disposed between the first ground trace and the second ground trace. The first ground trace and the second ground trace are immediately adjacent to the first signal trace and the second signal trace respectively.
摘要:
A video processing method is implemented by transmitting and receiving devices, and includes: obtaining a standard resolution source image frame from an image sequence, and detecting a network bandwidth; when an encoding bit rate of the source image frame exceeds the network bandwidth, decreasing a resolution thereof to obtain reduced image frame content and generating a relay image frame containing the same and having an encoding bit rate not exceeding the network bandwidth; generating an encoded image frame by encoding the source or the relay image frame, and sending the encoded image frame to the receiving device; and decoding the encoded image frame to obtain the source or the relay image frame, and recovering from the relay image frame, when obtained, a restored image frame corresponding to the reduced image frame content and having the standard resolution. A video processing system is also disclosed.
摘要:
The invention relates to a nucleating agent for polyethylene terephthalate and injection molding method thereof. The nucleating agent comprises a SiO2 core grafted with bis(2-hydroxyethyl)terephthalate, which accelerates the crystallization of polyethylene terephthalate for injection molding.
摘要:
An embodiment of a radiation detector includes a semiconductor-based blocking structure interposed between the detector's absorption region and at least one of its contact structures. The blocking structure is adapted to prevent minority carriers generated within the adjacent contact structure from reaching the absorption region, and may also prevent minority carriers generated within the absorption region near the contact structure from entering the contact structure. Majority carriers, on the other hand, may be substantially unimpeded by the blocking structure in moving from the absorption region to the contact structure. In an embodiment, the blocking structure has a higher effective energy gap than its adjacent contact structure and than the absorption region. The interface between the blocking structure and the absorption region may be graded, so that the effective energy gap decreases gradually between the blocking structure and the absorption region.
摘要:
A multispectral radiation detector for detecting radiation in at least two spectral bands, comprises a substrate and a layer stack grown on the substrate. The layer stack comprises at least first and second photodiodes, each photodiode having at least one strain-compensating superlattice absorbing layer substantially lattice matched to adjacent layers of the detector. Each strain-compensating superlattice absorbing layer has an energy gap responsive to radiation energy in a corresponding spectral region and different from the energy gaps of other strain-compensating superlattice absorbing layers of the detector.
摘要:
Techniques are provided for manipulating folder and file icons on a screen of an electronic device. A folder icon representing a folder is displayed on a screen, in a first mode, at a first location on the screen. The folder may contain a plurality of individual files and the folder icon is configured to indicate the plurality of individual files. An activation event is detected comprising a movement from the first location on the screen to a second location on the screen. In response to detecting the activation event, the folder icon is displayed on the screen along with icons representing the individual files on the screen. The screen may display the icons of the individual files as fanning out from the folder icon and/or may display the icons of the individual files entirely outside of the folder icon.
摘要:
A method for displaying applications of a touch-controlled device includes the steps of: generating an electronic signal according a gesture applied on a touch panel of the touch-controlled device; generating a detection result according to the electronic signal, wherein the detection result includes a first position of the gesture corresponding to the touch panel; when the detection result indicates that the detected gesture is a multi-fingered grab gesture, starting an application container; and outputting a control signal to the touch panel according to the application container, in order to display the application container at the first position.