Abstract: A method for calculating excursion of a diaphragm of a speaker, which includes: calculating a DC resistance based on a feedback signal of the speaker; calculating an impedance based on the feedback signal and the DC resistance; calculating a transfer function between a signal and a velocity of the diaphragm of the speaker based on the DC resistance, the impedance, and a force factor; and calculating the excursion of the diaphragm of the speaker based on an input signal and the transfer function.

Abstract: A network communication method used in a network communication apparatus is provided that includes the steps outlined below. An external network communication apparatus is electrically coupled through a communication path. A communication capability packet is transmitted to the external network communication apparatus. Whether an acknowledgement packet from the external network communication apparatus is received through the communication path is determined. When the acknowledgement packet is not received, a single direction communication is performed within any single time period by using a time division communication mechanism such that an auto negotiation process is performed by exchanging the communication capability packet and the acknowledgement packet of both of the network communication apparatus and the external network communication apparatus.

Abstract: The present invention provides an audio adjustment method and associated audio adjustment device for active noise cancellation. The audio adjustment method includes: broadcasting a single tone having a frequency fk; generating M sets of filtering coefficients regarding the frequency fk, wherein each set of filtering coefficients within the M sets of filtering coefficients includes a combination of an amplitude and a phase, and the M sets of filtering coefficients are different from one another; determining an mth set of filtering coefficients from the M sets of filtering coefficients to minimize energy corresponding to the frequency fk; and adjusting the single tone with the mth set of filtering coefficients to obtain an adjusted single tone corresponding to the frequency fk.

Abstract: An image white balance processing method is provided. The image white balance processing method includes: calculating color coordinate points; when it is determined that the color coordinate points are in a first given region, calculating a plurality of weighted averages according to a plurality of coordinate components and a plurality of weight values of color coordinate points of a white given image region, and when it is determined that the color coordinate points are in a second given region, calculating a plurality of averages according to a plurality of coordinate components of color coordinate points of a green given image region; calculating an estimated coordinate point; and calculating a plurality of white balance gains according to the number of a plurality of white given image regions and green given image regions, the plurality of weighted averages, and the estimated coordinate point to compensate for the plurality of given image regions.

Abstract: A method of a data transmission apparatus applied in high-speed wired network includes: performing analog-to-digital conversion operation upon a time-domain analog training data signal transmitted from a link partner device to generate a time-domain digital training data signal; converting the time-domain digital training data signal into a frequency-domain training data signal; performing a frequency-domain feed-forward equalization (FFE) operation upon the frequency-domain training data signal to generate a frequency-domain FFE resultant signal; converting the frequency-domain FFE resultant signal into a time-domain FFE resultant signal; generating a difference resultant signal according to the time-domain FFE resultant signal and a feed-back equalization (FBE) resultant signal; receiving the difference resultant signal to generate a slicer resultant signal; and using the FBE operation to generate the FBE resultant signal according to the slicer resultant signal.

Abstract: A voltage control circuit for controlling an operating voltage of a target circuit, including: a speed detecting circuit, configured to detect an operating speed of the target circuit; and a control circuit, coupled to the speed detecting circuit, configured to generate a voltage control signal according to a difference between the operating speed and a predetermined speed, to a power supply circuit which generates the operating voltage, to control the operating voltage.

Abstract: An analog to digital converting module includes a comparator, at least one digital to analog convertor, and a reference buffer. The comparator is configured to compare a first input signal and a second input signal so as to output a comparing signal. The at least one at least one digital to analog convertor includes at least one capacitor. The reference buffer is configured to provide a reference signal. The at least one digital to analog convertor receives the reference signal such that a ripple signal is generated according to a change of a voltage of the reference signal. The capacitance of the capacitor of the at least one digital to analog convertor is adjusted based on the ripple signal.

Abstract: Disclosed is a DDR SDRAM signal calibration device capable to adapting to the variation of voltage and/or temperature. The device includes: an enablement signal setting circuit configured to generate data strobe (DQS) enablement setting; a signal pad configured to output a DQS signal; a signal gating circuit configured to generate a DQS enablement setting signal and a DQS enablement signal according to the DQS enablement setting and then output a gated DQS signal according to the DQS enablement signal and the DQS signal; and a calibration circuit configured to output a calibration signal according to the DQS enablement setting signal and at least one of the DQS enablement signal and the DQS signal so that the enablement signal setting circuit can maintain or adjust the DQS enablement setting according to the calibration signal.

Abstract: An integrated inductor includes a first coil and a second coil. The first coil has at least one first turn disposed in a first area and at least one second turn disposed in a second area, a number of the at least one first turn is different from a number of the at least one second turn. The second coil has at least one third turn disposed in the first area and at least one fourth turn disposed in the second area, a number of the at least one third turn is different from a number of the at least one fourth turn. The number of the at least one first turn is different from the number of the at least one third turn, and the number of the at least one second turn is different from the number of the at least one fourth turn.

Abstract: A cooperative precoding method, applied in a communication system comprising a coordinating device and multiple serving stations, is provided. The cooperative precoding method includes the following steps: the coordinating device obtaining multiple carrier frequency offset (CFO) parameters of the serving stations with respect to a user device; generating multiple cooperative encoded sequences; assigning the cooperative encoded sequences to the serving stations, respectively, according to an order of the plurality of CFO parameters; and the plurality of serving stations transmitting the cooperative encoded sequences, respectively, to the user device. Each cooperative encoded sequence is transmitted over multiple subcarriers.

Abstract: The present disclosure provides a charge pump circuit. The power receiving terminal receives a power voltage. The first energy storage capacitor is coupled between the positive output terminal and the ground terminal. The second energy storage capacitor is coupled between the negative output terminal and the ground terminal. The charge pump circuit controls the first and the second flying capacitors to have a first and a second connection relation with the power-receiving, the ground and the positive and the negative output terminals respectively within a first and a second operation time in a double voltage power supplying mode. The charge pump circuit is operated in the first and the second operation time in an interlaced manner, such that the positive and the negative output terminals respectively output a positive and a negative output voltages each having a voltage value that is a double of that of the power voltage.

Abstract: A method of positioning a device includes: receiving satellite signals corresponding to at least 5 satellites in a global navigation satellite system (GNSS); determining whether there is one of the satellite signals has a wrong bit edge from at least navigation data of the satellite signals; and in response to a determination that there is one of the satellite signals has a wrong bit edge, finding out a wrong satellite signal among the satellite signals, and using the navigation data of the other satellite signals to obtain a position of the device.

Abstract: A multi-member Bluetooth device for communicating data with a remote Bluetooth device is disclosed including: a main Bluetooth circuit and an auxiliary Bluetooth circuit. In the period during which the auxiliary Bluetooth circuit operates at a sniffing mode, the auxiliary Bluetooth circuit sniffs packets transmitted from the remote Bluetooth device while the main Bluetooth circuit receives packets issued from the remote Bluetooth device, and the auxiliary Bluetooth circuit switches from the sniffing mode to a relay mode if the throughput of packets sniffed by the auxiliary Bluetooth circuit is lower than a predetermined threshold. In the period during which the auxiliary Bluetooth circuit operates at the relay mode, the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device and forwards the received packets to the auxiliary Bluetooth circuit, and the auxiliary Bluetooth circuit does not sniff packets issued from the remote Bluetooth device.

Abstract: A multi-member Bluetooth device for communicating data with a remote Bluetooth device is disclosed including: a main Bluetooth circuit and an auxiliary Bluetooth circuit. In the period during which the auxiliary Bluetooth circuit operates at a relay mode, the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device and forwards the received packets to the auxiliary Bluetooth circuit; the auxiliary Bluetooth circuit does not sniff packets issued from the remote Bluetooth device, but will switch to a sniffing mode if a signal reception quality indicator of the auxiliary Bluetooth circuit is superior to a predetermined indicator value. In the period during which the auxiliary Bluetooth circuit operates at the sniffing mode, the auxiliary Bluetooth circuit sniffs packets issued from the remote Bluetooth device and the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device.

Abstract: A multi-member Bluetooth device for communicating data with a remote Bluetooth device is disclosed including: a main Bluetooth circuit and an auxiliary Bluetooth circuit. In the period during which the auxiliary Bluetooth circuit operates at a relay mode, the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device, and the auxiliary Bluetooth circuit does not sniff packets transmitted from the remote Bluetooth device. But the auxiliary Bluetooth circuit switches from the relay mode to a sniffing mode if the data type of packets transmitted from the remote Bluetooth device changes. In the period during which the auxiliary Bluetooth circuit operates at the sniffing mode, the auxiliary Bluetooth circuit sniffs packets issued from the remote Bluetooth device while the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device.

Abstract: A multi-member Bluetooth device for communicating data with a remote Bluetooth device is disclosed including: a main Bluetooth circuit and an auxiliary Bluetooth circuit. In the period during which the auxiliary Bluetooth circuit operates at a sniffing mode, the auxiliary Bluetooth circuit sniffs packets transmitted from the remote Bluetooth device and the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device. But the auxiliary Bluetooth circuit switches from the sniffing mode to a relay mode if the data type of packets transmitted from the remote Bluetooth device changes. In the period during which the auxiliary Bluetooth circuit operates at the relay mode, the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device and forwards the received packets to the auxiliary Bluetooth circuit, and the auxiliary Bluetooth circuit does not sniff packets transmitted from the remote Bluetooth device.

Abstract: A main Bluetooth circuit for use in a multi-member Bluetooth device is disclosed including: a first Bluetooth communication circuit, a first packet parsing circuit, and a first control circuit. In a period during which the auxiliary Bluetooth circuit operates at the sniffing mode, the first control circuit utilizes the first Bluetooth communication circuit to receive packets transmitted from the remote Bluetooth device. In a situation of that a throughput of packets sniffed from the remote Bluetooth device by the auxiliary Bluetooth circuit is lower than a predetermined threshold, the auxiliary Bluetooth circuit switches from the sniffing mode to the relay mode. In a period during which the auxiliary Bluetooth circuit operates at the relay mode, the first control circuit utilizes the first Bluetooth communication circuit to receive the packets transmitted from the remote Bluetooth device and to forward received packets to the auxiliary Bluetooth circuit.

Abstract: A method for adjusting a target clock of a wireless device and a wireless device thereof are provided. The method includes receiving two consecutive broadcast packets from a transmitter to obtain time information corresponding to each of the two broadcast packets; obtaining a time interval between the two broadcast packets according to the time information; and adjusting the target clock of the wireless device according to the time interval and a target value, to achieve the effect of automatically adjusting the target clock, the target clock being related to waking of the wireless device from a standby mode.

Abstract: A main Bluetooth circuit and an auxiliary Bluetooth circuit of a multi-member Bluetooth device for communicating data with a remote Bluetooth device are disclosed. In the period during which the auxiliary Bluetooth circuit operates at a relay mode, the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device, and the auxiliary Bluetooth circuit does not sniff packets transmitted from the remote Bluetooth device. But the auxiliary Bluetooth circuit switches from the relay mode to a sniffing mode if the data type of packets transmitted from the remote Bluetooth device changes. In the period during which the auxiliary Bluetooth circuit operates at the sniffing mode, the auxiliary Bluetooth circuit sniffs packets issued from the remote Bluetooth device while the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device.

Abstract: An auxiliary Bluetooth circuit for use in a multi-member Bluetooth device is disclosed including: a second Bluetooth communication circuit, a second packet parsing circuit, and a second control circuit. In a period during which the auxiliary Bluetooth circuit operates at a sniffing mode, the main Bluetooth circuit receives packets transmitted from the remote Bluetooth device, while the second control circuit utilizes the second Bluetooth communication circuit to sniff packets issued from the remote Bluetooth device. In a situation of that a throughput of packets sniffed by the auxiliary Bluetooth circuit is lower than a predetermined threshold, the auxiliary Bluetooth circuit switches from the sniffing mode to a relay mode. In a period during which the auxiliary Bluetooth circuit operates at the relay mode, the second control circuit utilizes the second Bluetooth communication circuit to receive packets forwarded from the main Bluetooth circuit.