Abstract: A beam forming device, a calibration method and a calibration system using the same are provided. The beam forming device includes a processor, a memory unit, a baseband circuit, and a plurality of antenna modules. The baseband circuit is electrically connected to the processor and the memory unit. The plurality of antenna modules each include multiple antenna elements, multiple phase shifters and multiple amplifiers corresponding to the multiple antenna elements. The memory unit stores a plurality of reference codebooks and instruction data, the plurality of reference codebooks each have a reference angle and the reference angles are different from each other, and the instruction data is used to specify a predetermined codebook from the plurality of reference codebooks to control multiple antenna modules, thereby enabling multiple antenna modules to transmit and receive signals.

Abstract: A beam forming device, a calibration method and a calibration system using the same are provided. The beam forming device includes a processor, a memory unit, a baseband circuit, and a plurality of antenna modules. The antenna modules each includes multiple antenna elements, and multiple phase shifters and multiple of amplifiers respectively corresponding to the antenna elements. The memory unit stores a reference codebook, a plurality of calibration codebooks and instructing data, each of the plurality of calibration codebooks includes a plurality of records of calibration control data divided by a plurality of target patterns, and a plurality of predetermined phase differences that are different from each other respectively existed between the plurality of calibration codebooks and the reference codebook. The instruction data is used for instructing the beamforming device to use one of the reference codebook and the plurality of calibration codebooks in transmitting and receiving signals.

Abstract: A beam forming device, a calibration method and a calibration system using the same are provided. The beam forming device includes a processor, a memory unit, a baseband circuit, and a plurality of antenna modules. The baseband circuit is electrically connected to the processor and the memory unit. The plurality of antenna modules each include multiple antenna elements, multiple phase shifters and multiple amplifiers corresponding to the multiple antenna elements. The memory unit stores a plurality of reference codebooks and instruction data, the plurality of reference codebooks each have a reference angle and the reference angles are different from each other, and the instruction data is used to specify a predetermined codebook from the plurality of reference codebooks to control multiple antenna modules, thereby enabling multiple antenna modules to transmit and receive signals.

Abstract: A beam forming device, a calibration method and a calibration system using the same are provided. The beam forming device includes a processor, a memory unit, a baseband circuit, and a plurality of antenna modules. The antenna modules each includes multiple antenna elements, and multiple phase shifters and multiple of amplifiers respectively corresponding to the antenna elements. The memory unit stores a reference codebook, a plurality of calibration codebooks and instructing data, each of the plurality of calibration codebooks includes a plurality of records of calibration control data divided by a plurality of target patterns, and a plurality of predetermined phase differences that are different from each other respectively existed between the plurality of calibration codebooks and the reference codebook. The instruction data is used for instructing the beamforming device to use one of the reference codebook and the plurality of calibration codebooks in transmitting and receiving signals.

Abstract: A cleaning brush structure is applicable for a washing machine, and the washing machine contains: a body in which an external drum is mounted, and the external drum accommodates an internal drum having a plurality of through orifices. Each of the plurality of through orifices accommodates a cleaning brush which includes a fixing element and a brushing element, and the fixing element has a conical face formed on a peripheral wall thereof, a small-diameter segment arranged on a first end thereof, and a large-diameter segment arranged on a second end thereof opposite to the first end of the fixing element. The brushing element is mounted on the small-diameter segment of the fixing element and has bristles inserted through said each through orifice so that the fixing element is fixed in said each through orifice of the internal drum.

Abstract: A satellite positioning method, a satellite pseudorange calculation apparatus and a satellite pseudorange calculation method thereof are provided. The satellite pseudorange calculation apparatus is used for calculating a pseudorange between a satellite and a satellite positioning receiving device, wherein the pseudorange includes an integer code value and a fractional code value. The satellite pseudorange calculation apparatus comprises a receiver and a processor electrically connected with the receiver. The receiver is configured to receive a code phase from a satellite signal acquisition unit, and the processor is configured to calculate the fractional code value according to the code phase. The receiver is further configured to define an approximation position and calculate the integer code value according to the approximate position and the fractional code value. The satellite positioning method is used for positioning the satellite positioning receiving device.

Abstract: A positioning device and a positioning method thereof are provided. The positioning device can cooperate with a first satellite group and a second satellite group, and it comprises a storage, a receiver and a processor. The receiver is configured to receive a first satellite group signal from the first satellite group and a second satellite group signal from the second satellite group. The processor is electrically connected to the storage and the receiver, and configured to calculate a positioning offset value according to one of the first satellite group signal and the second satellite group signal. In addition, the processor is configured to calculate a positioning result according to the second satellite group signal and the positioning offset, and store the positioning result in the storage.

Abstract: A satellite positioning method, a satellite pesudorange calculation apparatus and a satellite pesudorange calculation method thereof are provided. The satellite pesudorange calculation apparatus is used for calculating a pesudorange between a satellite and a satellite positioning receiving device, wherein the pesudorange includes an integer code value and a decimal code value. The satellite pesudorange calculation apparatus comprises a receiver and a processor electrically connected with the receiver. The receiver is configured to receive a code phase from a satellite signal acquisition unit, and the processor is configured to calculate the decimal code value according to the code phase. The receiver is further configured to define an approximation position and calculate the integer code value according to the approximate position and the decimal code value. The satellite positioning method is used for positioning the satellite positioning receiving device.

Abstract: A positioning device and a positioning method thereof are provided. The positioning device can cooperate with a first satellite group and a second satellite group, and it comprises a storage, a receiver and a processor. The receiver is configured to receive a first satellite group signal from the first satellite group and a second satellite group signal from the second satellite group. The processor is electrically connected to the storage and the receiver, and configured to calculate a positioning offset value according to one of the first satellite group signal and the second satellite group signal. In addition, the processor is configured to calculate a positioning result according to the second satellite group signal and the positioning offset, and store the positioning result in the storage.

Abstract: A charge control system for lithium battery using pulse width modulation is provided, and it detects the existing voltage of the charging lithium battery by a voltage detector and passes this voltage value to a microprocessor preset in the hand-held apparatus. Thus, the microprocessor can decide the applicable charge stage and confirm the status of the charging battery depending on the different Voltage values in real time. Next, the microprocessor controls a control unit by a pulse width modulation signal to modulate the power-source, which comes from an adaptor, as a constant current or a constant voltage to charge the battery. Accordingly, the charge process is completed by repeating the voltage detection and the duty cycle modulation of the control unit.

Abstract: A charging control method of lithium battery is provided. At the beginning, a voltage detect circuit detects the current voltage of the battery and the microprocessor decides a proper charging stage, and then modulates a power as an appropriate constant current or an appropriate constant voltage by the pulse width modulation (PWM) function of the microprocessor to charge the battery. Next, repeatedly detects the voltage, decides the charging stage, charges the battery, compares the voltage of the battery with the default voltage . . . and so on until the charging process is completed.

Abstract: A charging control system for lithium battery is provided, and it detects the existing voltage of the charging lithium battery by a voltage detector and passes this voltage value to a microprocessor preset in the hand-held apparatus. Thus, the microprocessor can decide the applicable charge stage and confirm the status of the charging battery depending on the different voltage values in real time. Next, the microprocessor controls a control unit by a pulse width modulation signal to modulate the power-source, which comes from an adaptor, as a constant current or a constant voltage to charge the battery. Accordingly, the charge process is completed by repeating the voltage detection and the duty cycle modulation of the control unit.

Abstract: A key structure. The key structure includes a lower cover, a keycap, and a light source. The keycap is disposed above the lower cover, and a lower surface of each keycap has at least one depression. The light source is disposed between the lower cover and the keycap. Light is emitted from the light source toward the depression and penetrates the keycap.

Abstract: A wireless network access apparatus includes a circuit board received in a housing and having one or more devices for communicating with various wireless network systems. An antenna is attached to the housing and coupled to the circuit board, and includes a curved surface for effectively receiving microwave signals. The housing includes a seat for selectively supporting the antenna. A cover is slidably secured to the housing for exposing the seat when the seat is secured to the housing, and for shielding the housing when the seat is removed from the housing.

Abstract: A wireless local area network card includes a main body, and an antenna. The main body includes a circuit board which has a first side that can be inserted into an equipment, and a second side. The antenna is pivotally mounted on the second side of the main body, and is exposed outward from the main body, so that the antenna may be pivoted to a have a desired inclined angle. Thus, the antenna may be freely pivoted to a desired angle to facilitate the wireless local area network card emitting and receiving the wireless signals, so that the wireless signals may be adjusted to the optimum condition.

Abstract: A wireless network access apparatus includes a circuit board received in a housing and having one or more devices for communicating with various wireless network systems. An antenna is attached to the housing and coupled to the circuit board, and includes a curved surface for effectively receiving microwave signals. The housing includes a seat for selectively supporting the antenna. A cover is slidably secured to the housing for exposing the seat when the seat is secured to the housing, and for shielding the housing when the seat is removed from the housing.

Abstract: The present invention provides an apparatus for supporting electronic equipment. The electronic equipment comprises a groove, a first engagement mechanism and a second engagement mechanism. The apparatus comprises a main body, a first component and a second component. The main body has a turning spindle disposed within the groove. The first component and the second component locate on the main body. While the first component is coupled with the first engagement mechanism, the apparatus extends and the electronic equipment is vertical. While the second component is coupled with the second engagement mechanism, the apparatus retracts and the electronic equipment is horizontal.

Abstract: A composite locking device comprises a case frame adapted to be connected to the inside of a door and a lock lever within the case frame. The lock lever is capable of lateral movement and has a first end which extends through the opening in the case frame to be received in a recess in a door jamb, and a second end within the case frame. The case frame includes a rotatable disk which is adapted to receive a key for laterally displacing the lock lever. A lockhead is fastened adjacent to the disk so that the key passes therethrough before it is received by the rotatable disk. The lockhead includes a power switch which is activated by insertion of the key, the power switch in turn activating a code switch. The code switch activates an electromagnet. A lock bolt is provided in the case frame which engages the lock lever. When the electromagnet is activated, it attracts the lock bolt away from the lock lever thus permitting lateral displacement of the lock lever by the key without activating an alarm.