Patents by Inventor Hou-Wei Lin
Hou-Wei Lin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10462747Abstract: 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.Type: GrantFiled: July 5, 2018Date of Patent: October 29, 2019Assignee: Realtek Semiconductor Corp.Inventors: Hou-Wei Lin, Yi-Cheng Chen, Chia-Chun Hung, Yi-Chang Shih, Liang-Hui Li, Yi-Lin Li
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Publication number: 20190319747Abstract: A multi-member Bluetooth device includes: a main Bluetooth circuit capable of bidirectionally communicating with a remote Bluetooth device through a first Bluetooth communication circuit; and an auxiliary Bluetooth circuit capable of communicating with the main Bluetooth circuit through a data transmission circuit. While the main Bluetooth circuit utilizes the first Bluetooth communication circuit to communicate with the remote Bluetooth device, the auxiliary Bluetooth circuit utilizes a second Bluetooth communication circuit to sniff packets transmitted from the remote Bluetooth device. When detected that the auxiliary Bluetooth circuit has missed packets transmitted from the remote Bluetooth device, the main Bluetooth circuit transmits missing packets of the auxiliary Bluetooth circuit to the auxiliary Bluetooth circuit through the data transmission circuit.Type: ApplicationFiled: April 11, 2019Publication date: October 17, 2019Applicant: Realtek Semiconductor Corp.Inventors: Yi-Cheng CHEN, Kuan-Chung HUANG, Chin-Wen WANG, Pei-Yuan HSIEH, Hou Wei LIN
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Publication number: 20190320345Abstract: A auxiliary Bluetooth circuit of a multi-member Bluetooth device includes: a Bluetooth communication circuit; a data transmission circuit; and a control circuit arranged to operably control the data transmission circuit to communicate data with a main Bluetooth circuit of the multi-member Bluetooth device, and arranged to utilize the Bluetooth communication circuit to sniff packets transmitted from the remote Bluetooth device during the period in which the main Bluetooth circuit conducts packet transmission with the remote Bluetooth device. When the auxiliary Bluetooth circuit missed packets transmitted from the remote Bluetooth device, the data transmission circuit is further arranged to operably receive the missed packets from the main Bluetooth circuit.Type: ApplicationFiled: April 11, 2019Publication date: October 17, 2019Applicant: Realtek Semiconductor Corp.Inventors: Yi-Cheng CHEN, Kuan-Chung HUANG, Chin-Wen WANG, Pei-Yuan HSIEH, Hou Wei LIN
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Publication number: 20190319685Abstract: A main Bluetooth circuit of a multi-member Bluetooth device includes: a Bluetooth communication circuit; a data transmission circuit; and a control circuit arranged to operably conduct bidirectional packet transmission with a remote Bluetooth device through the Bluetooth communication circuit by utilizing a Bluetooth wireless transmission approach, and arranged to operably communicate data with other devices through the data transmission circuit. During the period in which the Bluetooth communication circuit conducts packet transmission with the remote Bluetooth device, an auxiliary Bluetooth circuit of the multi-member Bluetooth device sniffs packets transmitted from the remote Bluetooth device.Type: ApplicationFiled: April 11, 2019Publication date: October 17, 2019Applicant: Realtek Semiconductor Corp.Inventors: Yi-Cheng CHEN, Kuan-Chung HUANG, Chin-Wen WANG, Pei-Yuan HSIEH, Hou Wei LIN
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Publication number: 20180317177Abstract: 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.Type: ApplicationFiled: July 5, 2018Publication date: November 1, 2018Inventors: Hou-Wei Lin, Yi-Cheng Chen, Chia-Chun Hung, Yi-Chang Shih, Liang-Hui Li, Yi-Lin Li
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Patent number: 10064140Abstract: 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.Type: GrantFiled: June 2, 2017Date of Patent: August 28, 2018Assignee: Realtek Semiconductor Corp.Inventors: Hou-Wei Lin, Yi-Cheng Chen, Chia-Chun Hung, Yi-Chang Shih, Liang-Hui Li, Yi-Lin Li
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Publication number: 20180110008Abstract: 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.Type: ApplicationFiled: June 2, 2017Publication date: April 19, 2018Inventors: Hou-Wei Lin, Yi-Cheng Chen, Chia-Chun Hung, Yi-Chang Shih, Liang-Hui Li, Yi-Lin Li
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Patent number: 9781545Abstract: A wireless communication system and related wireless devices are disclosed. The wireless communication system includes: a source wireless device configured to operably insert an auto-pairing request and one or more source Bluetooth device addresses into one or more predetermined advertising packets to form one or more target advertising packets, and configured to operably transmit the target advertising packets; and a destination wireless device configured to operably receive and parser the target advertising packets to extract the auto-pairing request and the one or more source Bluetooth device addresses. The destination wireless device performs an auto-pairing procedure with the source wireless device according to the auto-pairing request and the one or more source Bluetooth device addresses to establish a Bluetooth bond with the source wireless device.Type: GrantFiled: April 13, 2015Date of Patent: October 3, 2017Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Wei-Feng Mao, Shi-Meng Zou, Chen-Hsing Lo, Chia-Chun Hung, Yu-Hsuan Liu, Chin-Chiu Li, Hou-Wei Lin, Yong Liu, Chun-Xia Guo
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Publication number: 20150296329Abstract: A wireless communication system and related wireless devices are disclosed. The wireless communication system includes: a source wireless device configured to operably insert an auto-pairing request and one or more source Bluetooth device addresses into one or more predetermined advertising packets to form one or more target advertising packets, and configured to operably transmit the target advertising packets; and a destination wireless device configured to operably receive and parser the target advertising packets to extract the auto-pairing request and the one or more source Bluetooth device addresses. The destination wireless device performs an auto-pairing procedure with the source wireless device according to the auto-pairing request and the one or more source Bluetooth device addresses to establish a Bluetooth bond with the source wireless device.Type: ApplicationFiled: April 13, 2015Publication date: October 15, 2015Applicant: REALTEK SEMICONDUCTOR CORP.Inventors: Wei-Feng MAO, Shi-Meng ZOU, Chen-Hsing LO, Chia-Chun HUNG, Yu-Hsuan LIU, Chin-Chiu LI, Hou-Wei LIN, Yong LIU, Chun-Xia GUO
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Patent number: 8937995Abstract: 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.Type: GrantFiled: November 2, 2006Date of Patent: January 20, 2015Assignee: RealTek Semiconductor Corp.Inventors: Hou-Wei Lin, Yi-Lin Li, Cheng-Yi Huang, Kuang-Yu Yen
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Patent number: 8527857Abstract: A parity-check-code decoder is adapted for receiving a channel quality ratio and at least (N) bits that are to be decoded. The parity-check-code decoder treats each of the bits as a bit node, and includes: a verifying circuit that multiplies (N) bit nodes by a matrix to obtain (N-K) check nodes; a reliability-generating circuit that generates a reliability index that serves as an extrinsic check index for each of the bit nodes to transmit to the check nodes; a bit exchange circuit that generates an extrinsic bit index for each of the check nodes to transmit to the bit nodes; a check-exchange circuit that updates a plurality of the extrinsic check indices based on the extrinsic bit indices for the bit nodes to transmit to the check nodes; and a reliability-updating circuit that updates the reliability index of and determines an updated value for each of the bit nodes.Type: GrantFiled: November 5, 2009Date of Patent: September 3, 2013Assignee: Realtek Semiconductur Corp.Inventors: Cheng-Kang Wang, Hou-Wei Lin, Chia-Chun Hung
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Patent number: 8447001Abstract: An apparatus for performing channel estimation includes a time-domain estimating circuit to perform a channel estimation on a time-domain received signal to output a time-domain estimated signal, a second frequency-domain converting circuit to convert the time-domain estimated signal into a frequency-domain estimated signal, an error computing circuit to produce an error signal based on the frequency-domain estimated signal and a frequency-domain received signal, and a compensation circuit to compensate the frequency-domain estimated signal using the error signal so as to produce a final channel estimation signal. The apparatus is located in a receiving device that includes a first frequency-domain converting circuit to convert the time-domain received signal into the frequency-domain received signal, and an equalizer to generate a frequency-domain recovered signal based on the frequency-domain received signal and the final channel estimation signal.Type: GrantFiled: September 9, 2009Date of Patent: May 21, 2013Assignee: Realtek Semiconductor Corp.Inventors: Chun-Ming Cho, Hou-Wei Lin
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Patent number: 8208588Abstract: A single-carrier/multi-carrier community receiver includes a discrete Fourier transform unit, a frequency-domain equalizer, an inverse discrete Fourier transform unit and an inter-symbol interference (ISI) cancellation unit. The discrete Fourier transform unit is utilized for executing a discrete Fourier transform upon a received signal to generate a frequency-domain signal. The frequency-domain equalizer is utilized for executing an equalization operation upon the frequency-domain signal to generate a frequency-domain equalized signal. The inverse discrete Fourier transform unit is utilized for executing an inverse discrete Fourier transform upon the frequency-domain equalized signal to generate a time-domain equalized signal. The ISI cancellation unit is utilized for executing an ISI cancellation operation upon the time-domain equalized signal to generate an ISI-cancelled signal.Type: GrantFiled: November 18, 2009Date of Patent: June 26, 2012Assignee: Realtek Semiconductor Corp.Inventors: Wei-Hung He, Hou-Wei Lin
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Patent number: 7979219Abstract: The invention provides a method for testing a transmission medium used in a full-duplex communication system comprising an endpoint that comprises a transmitting end (TX) and a receiving end (RX); the method comprises the steps of: first, transmitting a transmitted signal which comprises a test signal sequence with a high auto-correlation characteristic; then, receiving a received signal, and performing a correlation operation on the test signal and the received signal; finally, according to the result of the correlation operation, determining the impedance matching condition of the transmission medium.Type: GrantFiled: June 22, 2009Date of Patent: July 12, 2011Assignee: Realtek Semiconductor Corp.Inventors: Kuang-Yu Yen, Meng-Han Hsieh, Hou-Wei Lin, Chi-Shun Weng
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Patent number: 7738580Abstract: A quadrature amplitude modulation trellis coded modulation (QAM-TCM) decoding apparatus and the related method that receives and decodes a QAM signal. The QAM-TCM decoding apparatus includes an in-phase least significant bit (LSB) decoding path, which includes a in-phase Viterbi decoder for executing a decoding procedure on at least one LSB corresponding to an in-phase component of the QAM signal, a quadrature-phase LSB decoding path, which includes a quadrature-phase Viterbi decoder for executing a decoding procedure on at least one LSB corresponding to a quadrature-phase component of the QAM signal, and a most significant bit (MSB) decoding path for executing a decoding procedure on MSB portions corresponding to the in-phase or the quadrature-phase of the QAM signal.Type: GrantFiled: June 6, 2006Date of Patent: June 15, 2010Assignee: Realtek Semiconductor Corp.Inventors: Jung-Tang Chiang, Hou-Wei Lin
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Publication number: 20100124268Abstract: A single-carrier/multi-carrier community receiver includes a discrete Fourier transform unit, a frequency-domain equalizer, an inverse discrete Fourier transform unit and an inter-symbol interference (ISI) cancellation unit. The discrete Fourier transform unit is utilized for executing a discrete Fourier transform upon a received signal to generate a frequency-domain signal. The frequency-domain equalizer is utilized for executing an equalization operation upon the frequency-domain signal to generate a frequency-domain equalized signal. The inverse discrete Fourier transform unit is utilized for executing an inverse discrete Fourier transform upon the frequency-domain equalized signal to generate a time-domain equalized signal. The ISI cancellation unit is utilized for executing an ISI cancellation operation upon the time-domain equalized signal to generate an ISI-cancelled signal.Type: ApplicationFiled: November 18, 2009Publication date: May 20, 2010Inventors: Wei-Hung He, Hou-Wei Lin
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Publication number: 20100122139Abstract: A parity-check-code decoder is adapted for receiving a channel quality ratio and at least (N) bits that are to be decoded. The parity-check-code decoder treats each of the bits as a bit node, and includes: a verifying circuit that multiplies (N) bit nodes by a matrix to obtain (N-K) check nodes; a reliability-generating circuit that generates a reliability index that serves as an extrinsic check index for each of the bit nodes to transmit to the check nodes; a bit exchange circuit that generates an extrinsic bit index for each of the check nodes to transmit to the bit nodes; a check-exchange circuit that updates a plurality of the extrinsic check indices based on the extrinsic bit indices for the bit nodes to transmit to the check nodes; and a reliability-updating circuit that updates the reliability index of and determines an updated value for each of the bit nodes.Type: ApplicationFiled: November 5, 2009Publication date: May 13, 2010Applicant: REALTEK SEMICONDUCTOR CORP.Inventors: Cheng-Kang WANG, Hou-Wei LIN, Chia-Chun HUNG
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Patent number: 7706492Abstract: The present invention provides a method and apparatus for correcting symbol timing of a receiver. The receiver receives a signal transmitted by a transmitter based on a symbol period. The method includes: sampling the signal with a sampling period to generate N sampled data in series, wherein the sampling period is half the symbol period; from Kth data of the N sampled data, getting M data to serve as a first data set; performing a timing recovery algorithm upon the first data set to generate a first timing metric; from (Kth+1) data of the N sampled data, getting M data to serve as a second data set; performing the timing recovery algorithm upon the second data set to generate a second timing metric; and correcting the symbol timing according to the first and second timing metrics.Type: GrantFiled: June 15, 2006Date of Patent: April 27, 2010Assignee: Realtek Semiconductor Corp.Inventors: Kuang-Yu Yen, Chien-Liang Tsai, Hou-Wei Lin, Yi-Lin Li
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Publication number: 20100061495Abstract: An apparatus for performing channel estimation includes a time-domain estimating circuit to perform a channel estimation on a time-domain received signal to output a time-domain estimated signal, a second frequency-domain converting circuit to convert the time-domain estimated signal into a frequency-domain estimated signal, an error computing circuit to produce an error signal based on the frequency-domain estimated signal and a frequency-domain received signal, and a compensation circuit to compensate the frequency-domain estimated signal using the error signal so as to produce a final channel estimation signal. The apparatus is located in a receiving device that includes a first frequency-domain converting circuit to convert the time-domain received signal into the frequency-domain received signal, and an equalizer to generate a frequency-domain recovered signal based on the frequency-domain received signal and the final channel estimation signal.Type: ApplicationFiled: September 9, 2009Publication date: March 11, 2010Applicant: Realtek Semiconductor Corp.Inventors: Chun-Ming Cho, Hou-Wei Lin
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Patent number: 7676009Abstract: The present invention provides a method and circuit for equalizing and compensating IQ imbalance at the same time. The method includes: down-converting an RF signal to generate a baseband signal, and driving an adaptive equalizer to process the baseband signal for achieving equalization and IQ imbalance compensation simultaneously.Type: GrantFiled: April 13, 2006Date of Patent: March 9, 2010Assignee: Realtek Semiconductor Corp.Inventors: Kuang-Yu Yen, Chien-Liang Tsai, Yi-Lin Li, Hou-Wei Lin