Abstract: A mobile device at least includes an antenna system. The antenna system includes a first antenna, a second antenna, a first isolation element, and a second isolation element. The first antenna is excited by a first signal source. The second antenna is excited by a second signal source. A first end of the first isolation element is coupled to a ground region, and a second end of the first isolation element is open. A first end of the second isolation element is coupled to the ground region, and a second end of the second isolation element is open. The first isolation element and the second isolation element are both disposed between the first antenna and the second antenna, and are configured to enhance the isolation of the antenna system.

Abstract: An antenna system includes a first antenna and a second antenna. The first antenna includes a first feeding element and a first radiation element. The first feeding element is coupled to a first signal source. A first end of the first radiation element is coupled to a ground region, and a second end of the first radiation element is open and adjacent to the first feeding element. The second antenna includes a second feeding element and a second radiation element. The second feeding element is coupled to a second signal source. A first end of the second radiation element is coupled to the ground region, and a second end of the second radiation element is open and adjacent to the second feeding element.

Abstract: Provided is a biochemical test chip including an insulating substrate, an electrode unit, a first insulating septum, a reactive layer and a second insulating septum. The insulating substrate has a first vent hole. The electrode unit is located on the insulating substrate. The first insulating septum is located on the electrode unit. The first insulating septum has an opening which exposes a part of the electrode unit. The reactive layer is located in the opening. The second insulating septum is located on the first insulating septum. The second insulating septum has a second vent hole. The first vent hole is at least partially overlapped with the second vent hole.

Abstract: A device includes a first pin configured to connect to a first terminal of a resonator, a second pin configured to connect to a second terminal of a resonator, a gain stage having a first terminal electrically connected to the first pin, and a voltage drop circuit. The voltage drop circuit includes a first transistor having an input terminal electrically connected to a second terminal of the gain stage, and a second transistor having an input terminal electrically connected to an output terminal of the first transistor, and an output terminal electrically connected to the second pin.

Abstract: Disclosed herein are techniques to update a wireless fingerprint location database. According to such techniques, an update server updates a location database based on trajectories of a number of computing devices. The trajectories corresponding to sensor data collected by the computing devices, the sensor data including at least indication of RSSIs and inertial measurements. The RSSIs corresponding to wireless APs within an interior of a structure and represented in the location database.

Abstract: The present invention relates to compositions and methods for creation of vector nucleic acid sequences (e.g., retroviral nucleic acid sequences) that comprise two or more exogenous nucleic acid sequences that encode highly homologous (e.g., identical) polypeptide sequences, yet wherein at least one of the exogenous nucleic acid sequences has been mutated using degenerate codons for purpose of reducing homology between the two or more exogenous nucleic acid sequences while maintaining the encoded polypeptide sequence. Preferred nucleic acid sequences include those encoding multi-chimeric immune receptor (CIR) genes. Specific nucleic acid sequences of such CIR genes are also disclosed.

Abstract: This document discloses one or more systems, apparatuses, methods, etc. for detecting precise indoor location of a portable wireless device based on a WiFi simultaneous localization and mapping (SLAM) algorithm that implements spatial and temporal coherence. In an implementation, a SLAM algorithm includes WiFi similarities and inertial navigational system (INS) measurements data as location estimates (i.e., references) for the spatial and temporal coherences implementations to constitute the WiFi SLAM algorithm.

Abstract: A drive circuit for an electric motor having a wound stator and a permanent magnet rotor, includes a controllable bidirectional AC switch connected in series with a stator winding between two terminals for connecting to an AC power supply. First and second position sensors detect the position of magnetic poles of the rotor. A voltage regulating circuit is connected between the two terminals and the controllable bidirectional AC switch and configured to supply power to the first sensor during the positive cycle and to the second position sensor during the negative cycle of the AC power supply such that the controllable bidirectional AC switch is switched between a conductive state and a non-conductive state in a preset manner, thus enabling the stator to rotate the rotor in only one predetermined direction during start-up.

Abstract: A drive circuit for an electric motor connected in series with an AC power source between a first node and a second node. The drive circuit includes a controllable bidirectional AC switch, an AC-DC conversion circuit connected in parallel with the controllable bidirectional AC switch between the first node and the second node, a position sensor configured to detect a position of a rotor of the motor, and a switch control circuit configured to control the controllable bidirectional AC switch to be conductive or non-conductive in a predetermined way, based on the position of the rotor and a polarity of the AC power source.

Abstract: The present invention provides an acoustic box structure comprising a main body having a cover and a base with a cut-out slot, and formed of a hollow cavity constructed by the cover and the base with a pair of side panels; a modular supporting plate formed by side plates extended vertically from lateral sides of a substrate and comprising a top plate extended vertically therefrom, and disposed inside the hollow cavity; a circuit main board comprising a processor, sockets and terminals, and disposed on the modular supporting plate; an acoustic box connecting board comprising the terminals and the terminals electrically coupled thereto, and inserted into the cut-out slot; a speaker module comprising at least one speaker compartment on the base member and comprising terminals corresponding to the sockets of the modular supporting plate. Accordingly, the acoustic box structure of the present invention can be facilitated for assembly with increased diversity.

Abstract: A detaching mechanism includes at least one sloping portion, a groove, an elastic mechanism, and a latch portion. The sloping portion is disposed on a cover which detachably covers an outer surface of a shell. The sloping portion has a sloping surface. The groove is disposed on the shell. The latch portion is slidably received in the groove to slidably ride on the sloping surface of the sloping portion, such that the sloping portion is displaced away from the shell. The elastic mechanism connects the latch portion to the shell.

Abstract: A drive circuit for an electric motor, has a driving source unit, configured to generate a driving source signal and a driving unit, connected to the motor and configured to drive the motor according to the driving source signal. A sensing unit senses the actual speed of the motor. A control unit stops operation of the motor when the actual speed of the motor falls below a predetermined level. A timing unit counts a predetermined time period from the time the motor stops operation. The motor resumes operation at the end of the predetermined time period.

Abstract: The present invention relates to compositions and methods for creation of vector nucleic acid sequences (e.g., retroviral nucleic acid sequences) that comprise two or more exogenous nucleic acid sequences that encode highly homologous (e.g., identical) polypeptide sequences, yet wherein at least one of the exogenous nucleic acid sequences has been mutated using degenerate codons for purpose of reducing homology between the two or more exogenous nucleic acid sequences while maintaining the encoded polypeptide sequence. Preferred nucleic acid sequences include those encoding multi-chimeric immune receptor (CIR) genes. Specific nucleic acid sequences of such CIR genes are also disclosed.

Abstract: The present invention provides an improved speaker structure, which includes a speaker body, a resonance body and at least one sound guiding portion. The resonance body includes a resonance film and a resonance film frame. The sound guiding portion includes a first sound guiding member, a second sound guiding member and a back frame unit. The speaker structure forms a sealed sound chamber by combining the speaker body, the resonance body and the at least one sound guiding portion. When the speaker body generates a front sound wave and a guiding sound wave, the front sound wave is transmitted within the sound chamber to the resonance film to enhance low frequency sound effect, and the guiding sound wave is transmitted within the resonance cavity and forms a back sound wave, thus reducing noise in the sound region and enabling better extension of the sound wave towards low frequency range.

Abstract: A tracking system for use with a pipeline includes a scraper having signal generation capability for generating acoustic signals, a plurality of acoustic pressure sensors positioned at intervals along the path traveled by the scraper, and a plurality of local processors positioned at intervals along the path traveled by the scraper. Each of the local processors is in communication with a respective acoustic pressure sensor. A central processor is in communication with the local processors and determines the location of the scraper using time-stamped acoustic signals received by the pressure sensors and a speed of sound in a fluid within the pipeline.

Abstract: A tracking system for use with a pipeline includes a scraper having signal generation capability for generating acoustic signals, a plurality of acoustic pressure sensors positioned at intervals along the path traveled by the scraper, and a plurality of local processors positioned at intervals along the path traveled by the scraper. Each of the local processors is in communication with a respective acoustic pressure sensor. A central processor is in communication with the local processors and determines the location of the scraper using time-stamped acoustic signals received by the pressure sensors and a speed of sound, in a fluid within the pipeline.

Abstract: A memory includes a logic controller, a word line driver, a boost circuit, plural capacitor circuits, plural memory cores, plural selectors, and plural output drivers. The logic controller generates a word line enabling signal and a boost enabling signal. The word line driver receives the word line enabling signal. The boost circuit receives the boost enabling signal. The plural capacitor circuits are connected between the boost circuit and the word line driver. Each of the plural memory cores is connected with the word line driver through plural word lines. The plural selectors are connected with the corresponding memory cores. The plural output drivers are connected with the corresponding selectors. The number of the plural memory cores is positively correlated with the number of the plural capacitor circuits.

Abstract: Methods, apparatuses, and computer program products for transporting data from a sender to a receiver with low delay for interactive real-time media applications are described.

Abstract: A memory includes a logic controller, a word line driver, a boost circuit, plural capacitor circuits, plural memory cores, plural selectors, and plural output drivers. The logic controller generates a word line enabling signal and a boost enabling signal. The word line driver receives the word line enabling signal. The boost circuit receives the boost enabling signal. The plural capacitor circuits are connected between the boost circuit and the word line driver. Each of the plural memory cores is connected with the word line driver through plural word lines. The plural selectors are connected with the corresponding memory cores. The plural output drivers are connected with the corresponding selectors. The number of the plural memory cores is positively correlated with the number of the plural capacitor circuits.