Patents Assigned to Realtek Semiconductor
  • Publication number: 20210105037
    Abstract: A communication device is adapted to perform a communication method. The communication method includes: initializing a link between the communication device and a corresponding device; responding to a being-trained procedure to obtain a being-trained log; and sending a training command string according to the being-trained log. Therefore, the corresponding device adjusts its transmission characteristic according to the received training command string to reach appropriate interoperability between devices.
    Type: Application
    Filed: March 30, 2020
    Publication date: April 8, 2021
    Applicant: REALTEK SEMICONDUCTOR CORP.
    Inventor: Chih-Hung Huang
  • Patent number: 10973054
    Abstract: Disclosed are a wireless transceiver and a wireless communication method capable of reducing signal interference originated from a neighboring channel, in which the difference between the central frequency of the neighboring channel and the central frequency of a target channel is less than a frequency difference threshold and/or the energy of an interference signal of the neighboring channel is greater than a signal energy threshold.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: April 6, 2021
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventor: Der-Zheng Liu
  • Patent number: 10969853
    Abstract: A USB adapting circuit is suitable for being connected between a USB host and an external device. The USB adapting circuit includes a connecting port, a detecting circuit, a standby circuit and a main circuit. The standby circuit receives a power supply from the USB host and supplies the detecting circuit and the main circuit with the power supply. The detecting circuit is configured to output a connected signal when the external device is connected to the connecting port. The standby circuit outputs an enabling signal in response to the connected signal. The main circuit adapts between the USB host and the external device when receiving the enabling signal. Therefore, the main circuit does not work without receiving the enabling signal, and has a power saving effect.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: April 6, 2021
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Cheng-Pin Chang, Tsung-Peng Chuang, Chun-Hao Peng
  • Patent number: 10969856
    Abstract: A method for controlling a wireless communication circuit is provided, wherein the wireless communication circuit is positioned in a first electronic device, and the method includes the steps of: obtaining parameters of each of a plurality of channels of the wireless communication circuit, and storing the parameters of each channel into a first storage device of the wireless communication circuit, wherein the plurality of channels are capable of being used for communications between the first electronic device and a second electronic device; using at least one specific channel of the plurality of channels to communicate with the second electronic device; and when the wireless communication circuit enters a power saving mode, retaining the parameters of the at least one specific channel, and removing at least a portion of the parameters of the other channels from the first storage device.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: April 6, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventor: Zuohui Peng
  • Patent number: 10970822
    Abstract: An image processing method and an electronic device thereof are provided. The image processing method includes performing a color processing procedure on the target pixel and correspondingly obtaining a plurality of first processed pixels.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: April 6, 2021
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Ching-Ju Hsiao, Wen-Tsung Huang
  • Patent number: 10972767
    Abstract: A transmitter for handling multiple formats of a video sequence, comprises a preprocessing module, for receiving a first format of a video sequence, to generate metadata of a second format of the video sequence according to the first format of the video sequence and the second format of the video sequence; and an encoder, couple to the preprocessing module, for transmitting the first format of the video sequence and the metadata in a bit stream to a receiver.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: April 6, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventors: Lingzhi Liu, Li Liu, Jing Wang, Wujun Chen, Qingxi He, Wei Pu, Weimin Zeng, Chi-Wang Chai
  • Patent number: 10970244
    Abstract: A smart interface circuit includes: a first protocol processing circuit receiving several first protocol commands including a first command and a second command from a first device, storing the commands in an instruction register that is accessible to a second protocol processing circuit, and outputting first data and second data stored in a data buffer to the first device according to the first command and the second command respectively; and the second protocol processing circuit generating X second protocol command(s) according to the first command to request a second device to output the first data to the data buffer, and before the first protocol processing circuit finishes outputting the first data to the first device, the second protocol processing circuit generating Y second protocol command(s) according to the second command to request the second device to output the second data to the data buffer.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: April 6, 2021
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Chia-Hung Lin, Min-Yu Tseng
  • Patent number: 10964029
    Abstract: A method of updating background model for an image processing device is disclosed. The method includes receiving at least a background image, counting a number of occurrences of a color of each pixel of the background image according to a color information of each pixel of the at least a background image, to establish a background model including a statistical color information about the color and the number of occurrences of the color, receiving a current image, and determining whether to update the number of occurrences of the color in the background model corresponding to a color of each pixel of the current image according to a color information of each pixel of the current image and a result of comparing a random number with a threshold.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: March 30, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventors: Shang-Lun Chan, Tsung-Hsuan Li, Chao-Hsun Yang, Shih-Tse Chen
  • Patent number: 10965905
    Abstract: The present invention provides an image processing method, wherein the method includes the steps of: receiving an image signal including a first frame and a second frame; determining edges of a foreground in the first frame and the second frame according to at least one motion vector of the first frame and the second frame; determining an edge of the foreground in an interpolated frame according to the edge of the foreground in the first frame and the edge of the foreground in the second frame; and directly using one or more motion vectors of a background adjacent to the foreground in the first frame or the second frame to serve as one or more motion vectors of an outer region of the edge of the foreground in the interpolated frame.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: March 30, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventor: Guangyu San
  • Patent number: 10965116
    Abstract: The present invention discloses an overvoltage-proof circuit capable of preventing damage caused by an overvoltage at moments of starting and/or stopping operation. An embodiment of the overvoltage-proof circuit includes a protected circuit and a protecting circuit. The protected circuit receives a power supply voltage to operate, and includes: a protected component, in which an upmost voltage that the protected component can withstand is lower than the power supply voltage; and at least one operational switch(es) operable to enable or disable the protected circuit according to an enabling signal. The protecting circuit is coupled to the protected component, and starts protecting the protected circuit from an overvoltage before a transition of the enabling signal, in which the overvoltage is greater than the upmost voltage.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: March 30, 2021
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Chia-Wei Yu, Hung-Chen Chu, Yung-Tai Chen
  • Patent number: 10959177
    Abstract: An energy detection method includes the following steps: controlling a communication device to enter a sleep mode during a first time interval; intermittently turning on and turning off a part of receiving functions of the communication device during a second time interval, in which the second time interval is after the first time interval, and when the part of receiving functions of the communication device are turned on, the communication device is controlled to receive a signal; and determining if a beacon signal is present according to energy of the signal received by the communication device. The first time interval and the second time interval form a detection period. First average power consumption of the communication device during the second time interval is smaller than second average power consumption of the communication device, in which the second average power consumption corresponds to enabling all receiving functions of the communication device.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: March 23, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventor: Zuohui Peng
  • Patent number: 10958294
    Abstract: The present disclosure provides a decoding device. The decoding device includes an iteration number computing unit and a recursive decoder. The iteration number computing unit receives multiple packet parameters corresponding to a packet and computes a codeword-number-per-symbol according to packet parameters, in which the packet includes multiple symbols. The iteration number computing unit computes an iteration number according to the codeword-number-per-symbol. The recursive decoder is coupled to the iteration number computing unit, and performs a decoding operation on a codeword within a data field of the packet according to the iteration number.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: March 23, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventors: Wei-Chieh Huang, Chung-Yen Liu, Yi-Syun Yang, Chung-Yao Chang
  • Patent number: 10958256
    Abstract: A fifty percent duty cycle detector includes a single-ended-to-differential converter (S2D) configured to receive a first clock and output a second clock and a third clock that are complementary; a controllable swap circuit configured to receive the second clock and the third clock and output a fourth clock and a fifth clock in accordance with a logical control signal; a time-to-digital converter (TDC) configured to receive the fourth clock and the fifth clock and output a digital word; and a finite state machine configured to receive the digital word and output the logical control signal and a ternary decision.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: March 23, 2021
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventor: Chia-Liang (Leon) Lin
  • Patent number: 10951257
    Abstract: A signal transceiver device includes a transceiver circuit, a switching circuit, a compensation circuit, and a calibration circuit. The transceiver circuit includes a transmitter and a receiver. The switching circuit has a first configuration and a second configuration, in which the transmitter is coupled to the receiver via the switching circuit. The compensation circuit analyzes an output of the receiver to obtain a first analyzed result and a second analyzed result, and generates first compensation coefficients and second compensation coefficients, in which the first analyzed result is corresponding to the first configuration, and the second analyzed result is corresponding to the second configuration. The calibration circuit calibrates the transmitter according to the first compensation coefficients, and calibrates the receiver according to the second compensation coefficients.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: March 16, 2021
    Assignee: Realtek Semiconductor Corporation
    Inventor: Tzu-Ming Kao
  • Patent number: 10949275
    Abstract: A message request method and a device of the message request method are provided, and the device is applicable to a USB multi-port electronic device including N type-C ports. The message request method includes receiving a message, and assigning, according to a port identifier of the message, the message to a corresponding message pending queue of N message pending queues; selecting, according to a largest message pending first algorithm, a message pending queue with a maximum quantity of messages from the N message pending queues, and obtaining a queue identifier corresponding to the message pending queue; extracting the message from the message pending queue corresponding to the queue identifier; and delivering the message to a policy engine of the type-C port corresponding to the queue identifier, to make a request for the message.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: March 16, 2021
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventor: Fan-Hau Hsu
  • Publication number: 20210073057
    Abstract: A message request method and a device of the message request method are provided, and the device is applicable to a USB multi-port electronic device including N type-C ports. The message request method includes receiving a message, and assigning, according to a port identifier of the message, the message to a corresponding message pending queue of N message pending queues; selecting, according to a largest message pending first algorithm, a message pending queue with a maximum quantity of messages from the N message pending queues, and obtaining a queue identifier corresponding to the message pending queue; extracting the message from the message pending queue corresponding to the queue identifier; and delivering the message to a policy engine of the type-C port corresponding to the queue identifier, to make a request for the message.
    Type: Application
    Filed: January 16, 2020
    Publication date: March 11, 2021
    Applicant: REALTEK SEMICONDUCTOR CORP.
    Inventor: Fan-Hau Hsu
  • Patent number: 10944616
    Abstract: The present invention provides a method for estimating a sampling frequency offset of a receiver supporting ATSC 3.0 standard is disclosed. The method includes the steps of: receiving a bootstrap signal comprising a plurality of symbols; performing an autocorrelation operation on a first symbol of the plurality of symbols to generate a first correlation result; performing the autocorrelation operation on a second symbol of the plurality of symbols to generate a second correlation result; and determining the sampling frequency offset according to the first correlation result and the second correlation result.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: March 9, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventor: Wen-Yu Huang
  • Patent number: 10943332
    Abstract: An image adjustment method includes: receiving an image, and retrieving R, G and B values and an infrared ray (IR) value from the image; dividing the image into a plurality of blocks; generating initial compensation coefficients respectively corresponding to the R, G, B and IR values for each block within the blocks; and performing following operations upon each block within the blocks: adjusting initial compensation coefficients of a current block according to a plurality of adjacent blocks next to the current block, in order to generate adjusted compensation coefficients of the current block; and using the adjusted compensation coefficients of the current block to perform IR crosstalk compensation upon the current block.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: March 9, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventors: Zhong-Yi Qiu, Wen-Tsung Huang
  • Patent number: 10943730
    Abstract: A single-ended inductor comprises a first partial coil wound in a first direction; and a second partial coil wound in a second direction and adjoined the first partial coil; wherein, the second direction is opposite to the first direction to reduce the coupling of single-ended inductors and peripheral lines and reduce signal interference.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 9, 2021
    Assignee: Realtek Semiconductor Corp.
    Inventors: Cheng Wei Luo, Hsiao-Tsung Yen, Ta-Hsun Yeh, Yuh-Sheng Jean
  • Patent number: 10943354
    Abstract: A method for extracting foreground image and electronic apparatus thereof is provided and implements infrared (IR) technology to perform the foreground image extraction to reduce ambient light effect and background noise. Furthermore, the method and electronic apparatus extract an IR light frame image indicating a light state, an IR dark frame image indicating a dark state, and a color image (e.g., RGB image, YUV image, or etc.) at different IR intensities. Then, the method and electronic apparatus calculate the relationship between the IR light frame image and the IR dark frame image to extract a better background image (including the user's face portion, body portion and hair portion) by a simple algorithm.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: March 9, 2021
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Zhong-Yi Qiu, Wen-Tsung Huang, Kai Liu