Realtek Semiconductor Inc.

Yi-Lin Li

Cheng-Yi Huang

Hou-Wei Lin

Kuang-Yu Yen

Liang-Hui Li

Yi-Cheng Chen

Chia-Chun Hung

Shih-Chieh Chen

Yi-Chang Shih

Chun-Yu Luo

Ya-Hsueh Huang

Chien-Liang Tsai

Shieh-Hsing Kuo

Chia Chun Hung

Yu-Hsuan Liu

Hung-Hsuan Cheng

Cheng-Lin Huang

Chen-Hsing Lo

Yu-Fang Chiu

Ju-Chun Wu

Yi-chang Shih

The present invention provides a control method of an audio device, wherein the audio device includes the steps of: wirelessly receiving an audio signal from an audio communication device; processing the audio signal to generate a processed audio signal for playing; receiving a command signal, wherein the control signal indicates the audio device to execute an operation, and the control signal is not part of the audio signal; obtaining time information; and executes the operation at a specific time point based on the time information.

Audio device and associated control method

Disclosed is a wireless signal receiving device and method capable of making different adjustments for different kinds of wireless communication to configure the device itself adaptively. The device includes an analog-front-end receiving circuit and a media access control (MAC) and post-processing circuit. The analog-front-end receiving circuit receives a first (second) communication signal through first (second) wireless communication in a first (second) duration and then generates a first (second) reception signal according to the first (second) communication signal. The MAC and post-processing circuit adjusts at least one parameter of the first (second) wireless communication according to updated setting of the first (second) wireless communication and thereby configures the device adaptively, wherein the updated setting of the first (second) wireless communication is determined according to the first (second) reception signal or first (second) subsidiary information dependent on the first (second) wireless communication.

Wireless signal receiving device and method

Disclosed is a wireless communication device including a wireless transceiver, a Bluetooth (BT) transceiver and a BT controller. The wireless transceiver supports at least one wireless communication standard (e.g., at least one of a series of IEEE 802.11 standards) and executes wireless communication via a wireless channel in a period of time. The BT transceiver executes BT communication via a plurality of BT channels successively in the period of time. The BT controller determines that a central-frequency difference between the wireless channel and a BT channel falls within a frequency interval of N predetermined frequency intervals and thereby controls the BT transceiver to use a set of parameters related to the frequency interval, wherein the set of parameters is one of N predetermined sets of parameters.

Multi-transceiver wireless communication device capable of adequately adjusting parameters for Bluetooth transceiver

A charging system includes: an input voltage supply circuit; a control circuit coupled to the input voltage supply circuit, configured to control the input voltage supply circuit to generate an input voltage according to a battery voltage of a target battery; and a charging circuit, coupled to the control circuit, configured to receive the input voltage and to provide a charging current to charge the target battery. The input voltage is generated according to a function that takes the battery voltage as a parameter. The input voltage is positively correlated with the battery voltage, and is greater than the battery voltage.

Charging system with low power consumption

A Bluetooth Integrated Circuit includes a receiver, a transmitter, and a control circuit. The receiver circuit is configured to receive a scan request packet from an electronic device, and the scan request packet being transmitted by the electronic device in accordance with a Bluetooth wireless low energy standard. The transmitter circuit is configured to transmit a data packet or an advertising packet, and the control circuit is coupled to the receiver circuit and the transmitter circuit. When the receiver circuit receives the scan request packet, the control circuit detects a transmission rate at which the scan request packet is transmitted by the electronic device and controls the transmitter circuit to transmit the data packet or the advertising packet at the data rate related to the scan request packet.

Bluetooth transmission integrated circuit and associated method

A power circuit applied to an electronic device, includes: a control circuit and a power providing circuit, wherein the control circuit is coupled to at least one circuit installed within the electronic device, and is arranged to generate a providing information according to at least one performance indicator of the circuit, wherein the providing information includes an optimal voltage signal setting, and the optimal voltage signal setting is generated according to a performance coefficient corresponding to each performance indicator; the power providing circuit is coupled to the control circuit and the at least one circuit, and is arranged to dynamically provide a voltage signal to the circuit according to the providing information.

Electronic device, power circuit applied to the electronic device, and associated method

A wireless device includes a radio-frequency module, a modem module, and a control unit. The radio-frequency module and the modem module operate either in a first operation mode or in a second operation mode. The control unit, coupled to the RF and the modem module, generates a control signal to indicate to the RF and the modem module to operate in the first operation mode or to operate in the second operation mode. A first set of signal formats corresponding to the first operation mode is a superset of a second set of signal formats corresponding to the second operation mode, and a first power consumption corresponding to the first operation mode is higher than a second power consumption corresponding to the second operation mode.

Radio-frequency module and wireless device

A Bluetooth service estimation apparatus and a Bluetooth service estimation method thereof are provided. The Bluetooth service estimation apparatus listens to data packets transmitted between the Bluetooth host and the remote Bluetooth device, and determines a Bluetooth service type between the Bluetooth host and the remote Bluetooth device according to contents of the data packets. The Bluetooth service estimation apparatus transmits the Bluetooth service type to a packet traffic arbitration module of a Wi-Fi host so that the Wi-Fi host determines a weight of network resources according to the Bluetooth service type, and decides a utilization rate of an antenna based on the weight of the network resources.

Bluetooth service estimation apparatus and bluetooth service estimation method thereof

An adaptive filter is disclosed, having a plurality of computation groups, a plurality of computation circuits, a summation circuit, a slicer circuit, an updating circuit, and a control circuit. Each computation group corresponds to an equalization parameter and has a plurality of memory cells. When the corresponding equalization parameter of a computation group is greater than a predetermined value, the control circuit configures the computation group and the computation circuit to collaboratively generate an output of the computation group. The summation circuit sums up the outputs of the computation groups to produce a filter output. The slicer circuit generates a slicer output according to the filter output. The updating circuit updates the equalization parameters according to the filter output and the slicer output.

Adaptive filter with reduced computational complexity

A complex divider utilized for dividing a first complex number by a second complex number to generate a computing result includes a computing unit and a dividing unit. The computing unit is utilized for receiving the first complex value and the second complex value, generating a third complex value according to the first complex value and the second complex value, and generating a real number according to the second complex value. The dividing unit is coupled to the computing unit, and is utilized for receiving the third complex value and the real number and dividing the third complex value by the real number to obtain the computing result.

Complex divider and associated method

An equalizer and an equalizing method for equalizing a received signal, where the received signal includes at least one primary interference and a plurality of secondary interferences. The Viterbi equalizer includes a filter module for filtering out the secondary interferences from the received signal to generate a filtered signal, a serial to parallel converter, coupled to the filter module, for generating a plurality of sequences according to the filtered signal, and a Viterbi equalizing module, coupled to the serial to parallel converter, for respectively equalizing the plurality of sequences to generate a plurality of equalized sequences. The architecture of the Viterbi equalizing module is greatly simplified thereby reducing the calculation activity of the Viterbi equalizer as well as maintaining its efficiency.

Equalizer and equalizing method thereof

An equalization device is arranged for equalizing a received signal, wherein the received signal may include a primary signal and at least one interference signal. The equalization device may include a transformation module, a serial-to-parallel converter, and an equalization module, wherein the transformation module may include a predictive decision feed-back equalizer, a first feed-back filter and an adder. The transformation module is arranged for generating a transformation signal according to the primary signal and the at least one interference signal of the received signal, wherein the transformation signal includes a transformed primary signal and at least one transformed interference signal. The serial-to-parallel converter is arranged for respectively converting the transformed primary signal and the transformed interference signal into a plurality of transformation signal sequences. The equalization module is arranged for respectively equalizing the plurality of transformation signal sequences so as to generate a plurality of equalized sequences.

Equalization device and equalizing method thereof

A signal processing method by adding odd and even field SYNC data for neutralized effects including the steps of receiving an odd field SYNC data of an odd field, which is different at a certain data segment when compared with an even field SYNC data of an even field, and the even field SYNC data of the even field; adding the odd field SYNC data and the even field SYNC data to neutralize the odd and even field SYNC data so as to generate a combined odd and even field SYNC data; and performing a predetermined signal processing on an input signal according to the combined odd and even field SYNC data.

Signal processing method by adding odd and even field sync data for neutralized effects and apparatus therefor

A receiver includes a discrete Fourier transform unit, a frequency-domain equalizer, an inverse discrete Fourier transform unit, a time-domain equalizer and an output circuit. The discrete Fourier transform unit is utilized for performing a discrete Fourier transform operation upon a received signal to generate a frequency-domain signal. The frequency-domain equalizer is utilized for equalizing the frequency-domain signal to generate an equalized frequency-domain signal. The inverse discrete Fourier transform unit is utilized for performing an inverse discrete Fourier transform operation upon the equalized frequency-domain signal to generate a first equalized time-domain signal. The time-domain equalizer is utilized for equalizing the received signal to generate a second equalized time-domain signal. The output circuit is utilized for generating a third equalized time-domain signal according to the first equalized time-domain signal and the second equalized time-domain signal.

Growing community of inventors

Hsinchu, Taiwan

Yi-Lin Li