Patents by Inventor Ching-Yao Su
Ching-Yao Su 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: 11630503Abstract: A method for a multidrop network system is provided. The method includes the following steps: transmitting, by a first node, a sleep request message to a second node; and determining, by the first node, whether to enter a sleep state from a wakeup state according to the condition in which the second node transmits a sleep acknowledge message in response to the sleep request message.Type: GrantFiled: August 31, 2021Date of Patent: April 18, 2023Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Ching-Yao Su, Yung-Le Chang, Yuan-Jih Chu, Ming-Jhe Du
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Publication number: 20220164020Abstract: A method for a multidrop network system is provided. The method includes the following steps: transmitting, by a first node, a sleep request message to a second node; and determining, by the first node, whether to enter a sleep state from a wakeup state according to the condition in which the second node transmits a sleep acknowledge message in response to the sleep request message.Type: ApplicationFiled: August 31, 2021Publication date: May 26, 2022Inventors: Ching-Yao SU, Yung-Le CHANG, Yuan-Jih CHU, Ming-Jhe DU
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Publication number: 20210065730Abstract: An electronic system includes an echo canceller, a calculation unit, and a control circuit. The echo canceller includes a plurality of operational segments and is configured to perform echo cancellation in a data mode or a power-saving mode. Based on the power of each operational segment provided by the calculation unit, the control circuit is configured to deactivate each stage whose power is lower than a threshold value when the echo canceller is performing echo cancellation in the power-saving mode.Type: ApplicationFiled: April 1, 2020Publication date: March 4, 2021Inventors: Yu-Lien Lin, Ta-Chin Tseng, Ching-Yao Su, Ching-Pei Huang
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Patent number: 10791006Abstract: An electronic system includes a feedforward equalizer, a feedback equalizer, an RFI canceler, and a control circuit. The feedforward equalizer and the feedback equalizer are configured to adjust the channel response of a transmission channel in the electronic system. The RFI canceler is configured to cancel the RFI presence in the electronic system. When the RFI canceler is off, the controller is configured to turn on the RFI canceler according to a signal error value before RFI cancelation, an error term of the electronic system, or an SNR of the electronic system.Type: GrantFiled: January 20, 2020Date of Patent: September 29, 2020Assignee: Realtek Semiconductor Corp.Inventors: Chia-Chang Lin, Li-Chung Chen, Ching-Yao Su, Yuan-Jih Chu
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Patent number: 9973235Abstract: This invention discloses a signal receiving device for Ethernet and a control method thereof. The signal receiving device includes a gain control circuit, an alien near-end crosstalk canceller, a noise canceller, and a DFE. The gain control circuit adjusts an input signal of the signal receiving device according to a setting parameter. The alien near-end crosstalk canceller cancels an alien near-end crosstalk interference. The noise canceller uses a first filter to cancel noises. The DFE uses a second filter to cancel an inter-symbol interference of the input signal. The method includes steps of: temporarily stopping the gain control circuit from updating the setting parameter before a seed collision occurs, and temporarily stopping one of the noise canceller and the decision feedback canceller from updating the first filter coefficient of the first filter or the second filter coefficient of the second filter temporarily during the seed collision.Type: GrantFiled: July 14, 2015Date of Patent: May 15, 2018Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Sheng-Fu Chuang, Liang-Wei Huang, Ching-Yao Su, Hsuan-Ting Ho
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Patent number: 9879970Abstract: A method for estimating cable length in an Ethernet system and a receiver thereof are applicable to an Ethernet system. The method for estimating cable length includes obtaining a channel tap from channel information of a feedback equalizer in the Ethernet system and estimating a cable length according to the channel tap, a first coefficient and a constant.Type: GrantFiled: July 9, 2014Date of Patent: January 30, 2018Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Shih-Wei Wang, Liang-Wei Huang, Ching-Yao Su, Sheng-Fu Chuang
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Patent number: 9859706Abstract: A united power module having an external input and a first input is provided. The united power module includes a load block, a protection circuitry and a detection block. The detection block includes an analog circuitry. The load block and an end of the protection circuitry are electrically coupled to the external input. The load block, the first input, and another end of the protection circuitry are electrically coupled to the detection block. The load block is supplied by an external power received from the external input. The protection circuitry receives the external power and outputs an auxiliary power. The analog circuitry receives a first power from the first input under a normal power supply state, or receives the auxiliary power under an auxiliary power supply state.Type: GrantFiled: September 25, 2015Date of Patent: January 2, 2018Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Ching-Yao Su, Liang-Wei Huang, Hsuan-Ting Ho, Sheng-Fu Chuang
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Patent number: 9824055Abstract: A control method applied to an Operating-Mode Finite-State-Machine (OPFSM) arranged for deciding a behavior of a first port of an apparatus includes: controlling the OPFSM to enter a second local state from a first local state and controlling the first port to send a signal with a wakeup pattern to a link partner of the first port when the state of the OPFSM is the first local state, and a wakeup request bit is a first local value.Type: GrantFiled: March 12, 2015Date of Patent: November 21, 2017Assignee: Realtek Semiconductor Corp.Inventors: Hsuan-Ting Ho, Liang-Wei Huang, Ching-Yao Su, Sheng-Fu Chuang
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Patent number: 9800290Abstract: A channel detection method for an echo canceller of a communication device is provided. The method includes the following steps. A first detection signal is transmitted to an end of a channel coupled to the communication device. A plurality of taps corresponding to a reflected signal of the first detection signal are received by an echo canceller at the end of the channel. The taps corresponding to the reflected signal are compared with a reference value corresponding to each of the taps so as to determine whether each of the taps is larger than or equal to the corresponding reference value. When the tap is determined to be larger than or equal to the reference value corresponding to the tap, the tap and a position of the tap are recorded.Type: GrantFiled: January 25, 2016Date of Patent: October 24, 2017Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Shih-Wei Wang, Liang-Wei Huang, Ching-Yao Su, Sheng-Fu Chuang
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Patent number: 9768982Abstract: A signal transmission method is provided. The method includes the following steps. First, an output signal filtered from a square wave signal by a high pass filter is received. Then, the output signal is sampled at each time interval, so as to generate the sampled values. Next, the sampled values are compared with at least one threshold to generate comparison results. Finally, a signal pattern corresponding to the output signal is identified according to the comparison results.Type: GrantFiled: October 22, 2015Date of Patent: September 19, 2017Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Sheng-Fu Chuang, Liang-wei Huang, Hsuan-Ting Ho, Ching-Yao Su
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Patent number: 9678146Abstract: The present invention discloses a temperature insensitive testing device comprising: a transmission-end test sequence generating circuit to generate a test sequence; a transmission circuit to process the test sequence according to a transmission clock and thereby generate a test signal; a reception circuit to process an echo of the test signal and generate a digital echo signal; a correlation-value generating circuit to generate correlation values including a maximum correlation value according to the test sequence and the digital echo signal; and a decision circuit to determine whether a relation between the maximum correlation value and at least one threshold satisfies a predetermined condition and thereby generate a decision result, wherein the frequency of the transmission clock is lower than a predetermined frequency which confines the variation of the maximum correlation value to a predetermined range provided that the temperature variation of the transmission cable is within a temperature variation ranType: GrantFiled: November 3, 2014Date of Patent: June 13, 2017Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Ching-Yao Su, Liang-Wei Huang, Shih-Wei Wang, Sheng-Fu Chuang
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Patent number: 9577705Abstract: This disclosure provides a network apparatus with communication ports, each connected to multiple channels, assigned a seed for eliminating the interference among the communication ports, and operable in a master or slave mode, each channel having a communication unit which comprises: an echo canceller, a near-end crosstalk (NEXT) canceller, a decision feedback equalizer, and a control unit configured for controlling the communication ports if the echo canceller and the decision feedback equalizer keep updating their filter coefficients according to the same symbol during a first pre-determined time-interval; wherein when more than two of the communication ports operate in the master mode, the control unit assigns different seeds to the more than two communication ports; and wherein when successive two of the communication ports operate in the slave mode, the control unit stops either the echo canceller or the NEXT canceller from updating their filter coefficients during a second pre-determined time-interval.Type: GrantFiled: October 29, 2014Date of Patent: February 21, 2017Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Hsuan-Ting Ho, Liang-Wei Huang, Sheng-Fu Chuang, Ching-Yao Su
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Patent number: 9569387Abstract: A master-slave detection method includes: every single time period, utilizing a random manner for determining whether a first device is used to transmit a specific pulse signal to a second device; every single time period, utilizing a random manner for determining whether the second device is used to transmit the specific pulse signal to the first device; when the first device receives at least one portion of the specific pulse signal earlier than the second device, setting the first device as a master device, stopping the master device from sending the specific pulse signal and utilizing the master device to start transmitting a specific sequence; and setting the second device as a slave device when the second device receives the specific sequence. The at least one portion of the specific pulse signal includes continuous single pulses.Type: GrantFiled: March 10, 2014Date of Patent: February 14, 2017Assignee: Realtek Semiconductor Corp.Inventors: Ching-Yao Su, Liang-Wei Huang, Hsuan-Ting Ho, Sheng-Fu Chuang
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Patent number: 9484983Abstract: An impedance adjustment method for a communication device, wherein the communication device has a plurality of impedance paths for selection, includes: selecting an initial impedance path; and utilizing a predetermined algorithm to examine a portion of the plurality of impedance paths by starting from the initial impedance path for selecting an optimized impedance path for the communication device. A delay capacitance adjustment method for a communication device, wherein the communication device has a plurality of delay capacitance paths for selection, includes: selecting an initial delay capacitance path; and utilizing a predetermined algorithm to examine a portion of the plurality of delay capacitance paths by starting from the initial delay capacitance path for selecting an optimized delay capacitance path of the communication device.Type: GrantFiled: July 10, 2014Date of Patent: November 1, 2016Assignee: Realtek Semiconductor Corp.Inventors: Ching-Yao Su, Liang-Wei Huang, Shih-Wei Wang, Hsuan-Ting Ho
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Patent number: 9471542Abstract: The present invention discloses a parameter generating device and the method thereof to generate a parameter for circuit operation in which the parameter corresponds to an N degree polynomial of a characteristic curve while said N is a positive integer. The parameter generating device comprises: a storage circuit to store at least N+1 initial values that are determined by a start value and a unit variation amount; and a parameter calculating circuit, coupled to the storage circuit, to carry out addition calculation for at least [(K?1)×N+1] time(s) if a multiple K is positive or subtraction calculation for at least ?K×N time(s) if the multiple K is negative, so as to generate the aforementioned parameter, wherein the multiple K is derived from a difference divided by the unit variation amount while the difference is a current value minus the start value.Type: GrantFiled: July 3, 2014Date of Patent: October 18, 2016Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Ching-Yao Su, Liang-Wei Huang, Shih-Wei Wang, Wan-Chun Huang
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Publication number: 20160301431Abstract: A signal transmission method is provided. The method includes the following steps. First, an output signal filtered from a square wave signal by a high pass filter is received. Then, the output signal is sampled at each time interval, so as to generate the sampled values. Next, the sampled values are compared with at least one threshold to generate comparison results. Finally, a signal pattern corresponding to the output signal is identified according to the comparison results.Type: ApplicationFiled: October 22, 2015Publication date: October 13, 2016Inventors: Sheng-Fu Chuang, Liang-wei Huang, Hsuan-Ting Ho, Ching-Yao Su
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Publication number: 20160276925Abstract: A united power module having an external input and a first input is provided. The united power module includes a load block, a protection circuitry and a detection block. The detection block includes an analog circuitry. The load block and an end of the protection circuitry are electrically coupled to the external input. The load block, the first input, and another end of the protection circuitry are electrically coupled to the detection block. The load block is supplied by an external power received from the external input. The protection circuitry receives the external power and outputs an auxiliary power. The analog circuitry receives a first power from the first input under a normal power supply state, or receives the auxiliary power under an auxiliary power supply state.Type: ApplicationFiled: September 25, 2015Publication date: September 22, 2016Inventors: CHING-YAO SU, LIANG-WEI HUANG, HSUAN-TING HO, SHENG-FU CHUANG
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Patent number: 9438453Abstract: The present invention discloses a network connection establishing method capable of preventing a link procedure from being strangled in a training state. An embodiment of the method comprises: a preceding step; a training step; and a following step. Said training step includes at least one of the following: counting a number, and returning to the preceding step if a local receiver is not yet ready after finishing counting the number; detecting a reception signal according to a signal detection level, and returning to the preceding step when none of the reception signal is detected; determining a number of level(s) of the reception signal, and returning to the preceding step if the number of level(s) is less than an expected level number; and comparing a signal-to-noise ratio of the reception signal with a signal-to-noise threshold, and returning to the preceding step when the signal-to-noise ratio fails to satisfy the signal-to-noise threshold.Type: GrantFiled: July 29, 2015Date of Patent: September 6, 2016Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Sheng-Fu Chuang, Liang-Wei Huang, Ching-Yao Su, Hsuan-Ting Ho
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Publication number: 20160233920Abstract: A channel detection method for an echo canceller of a communication device is provided. The method includes the following steps. A first detection signal is transmitted to an end of a channel coupled to the communication device. A plurality of taps corresponding to a reflected signal of the first detection signal are received by an echo canceller at the end of the channel. The taps corresponding to the reflected signal are compared with a reference value corresponding to each of the taps so as to determine whether each of the taps is larger than or equal to the corresponding reference value. When the tap is determined to be larger than or equal to the reference value corresponding to the tap, the tap and a position of the tap are recorded.Type: ApplicationFiled: January 25, 2016Publication date: August 11, 2016Inventors: Shih-Wei Wang, Liang-Wei Huang, Ching-Yao Su, Sheng-Fu Chuang
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Publication number: 20160132455Abstract: A control method applied to an Operating-Mode Finite-State-Machine (OPFSM) arranged for deciding a behavior of a first port of an apparatus includes: controlling the OPFSM to enter a second local state from a first local state and controlling the first port to send a signal with a wakeup pattern to a link partner of the first port when the state of the OPFSM is the first local state, and a wakeup request bit is a first local value.Type: ApplicationFiled: March 12, 2015Publication date: May 12, 2016Inventors: Hsuan-Ting Ho, Liang-Wei Huang, Ching-Yao Su, Sheng-Fu Chuang