摘要:
A method is proposed for integrating a bipolar injunction transistor (100) in a die of semiconductor material having a main surface (105) covered by a sacrificial insulating layer (110), the die including a collector region (Rc) of a first type of conductivity extending from the main surface. The method includes the steps of forming an intrinsic base region (Rbi) of a second type of conductivity extending in the collector region from the main surface through an intrinsic base window (Wbi) of the sacrificial insulating layer, and forming an emitter region (Re) of the first type of conductivity extending in the intrinsic base region from the main surface through an emitter window (We) of the sacrificial insulating layer; in the solution according to an embodiment of the invention, the method further includes the steps of removing the sacrificial insulating layer, forming an intermediate insulating layer (115) on the main surface, the intermediate insulating layer having a thickness lower than a thickness of the sacrificial layer, and forming an extrinsic base region (Rbe) of the second type of conductivity extending in the intrinsic base region from the main surface through an extrinsic base window (Wbe) of the intermediate insulating layer, the extrinsic base region having a concentration of impurities higher than a concentration of impurities of the intrinsic base region and being separated from the emitter region by a portion of the intrinsic base region.
摘要:
A touch screen uses a combination of capacitive sensing and inductive sensing applied to the same sensor pattern. A capacitive sensor uses the electric field formed by the columns and rows of the sensor matrix. An inductive sensor uses the magnetic field formed by current flowing in column and row lines to induce an inductive pen. Using the same sensor lines, the magnetic field created by the oscillating inductive pen is detected. Both methods require no moving elements in the sensor and it is possible to combine both method of detections in the same sensor pattern. Using switch matrices, the sensor lines are operated in an open loop fashion for the capacitive detection mode, and are operated in a closed loop fashion for the inductive detection mode.
摘要:
The invention relates to microelectromechanical systems (MEMS), and more particularly, to MEMS switches using magnetic actuation. The MEMS switch may be actuated with no internal power consumption. The switch is formed in an integrated solid state MEMS technology. The MEMS switch is micron and/or nanoscale, very reliable and accurate. The MEMS switch can be designed into various architectures, e.g., a cantilever architecture and torsion architecture. The torsion architecture is more efficient than a cantilever architecture.
摘要:
A system and method are provided for implementing the Hunt group function without the necessity of using any proxy functionalities. The Hunt group function can be independent of the signaling protocol being used by VoIP terminals. Consequently, there is no need of any special or proprietary signaling protocol to be implemented. Instead of registering all members or all VoIP nodes belonging to a Hunt group to a registration entity, only one pre-configured VoIP node belonging to the particular Hunt group needs to be registered. Likewise, instead of all members or VoIP nodes in the Hunt group registering with a registration entity and having a Hunt group number in addition to their usual peer-to-peer numbers, only one pre-configured VoIP node in the Hunt group would perform the registration and be registered with the Hunt group number. All incoming calls to the Hunt group will be directed by the gateway to the pre-configured VoIP node first. A method of the present embodiment may be performed by the gateway to ensure that the incoming call is forwarded to a VoIP node within the Hunt group.
摘要:
A multichip integrated circuit apparatus includes first and second integrated circuit die mounted on opposite sides of a leadframe die paddle, with at least t one of the integrated circuit die extending further toward the leads than does the die paddle. With this arrangement, the active circuit areas of both integrated circuit die can face in the same direction, and can be wire bonded to the same surfaces of the leads. This avoids wire bonding complications that are often encountered in multichip integrated circuit package designs.
摘要:
A Yule-Walker based, low-complexity voice activity detector (VAD) is disclosed. An input signal is typically noisy speech (i.e., corrupted with, for example, babble noise). In one embodiment, a first initialization stage of the VAD computes an occurrence of a silent period within the input signal and the AR parameters. The VAD could accordingly compute a tentative adaptive threshold and output hypothesis H 1 (which means speech is present) during this stage. During the second initialization stage, the VAD generally builds a database of associated values and computes the adaptive threshold accordingly. The second initialization stage could also output tentative VAD decisions based on the tentative threshold computed in the first initialization stage. Finally, the VAD periodically retrains or updates AR parameters, threshold values and/or the database and outputs VAD decisions accordingly.