Patents by Inventor Chi Ming LEUNG

Chi Ming LEUNG 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).

  • Publication number: 20250096820
    Abstract: A device may receive a downlink signal from a base station and may construct a frozen decode matrix for decoding frozen bits from data of the downlink signal. The device may construct a linear feedback shift register (LFSR) generator matrix for a component of scrambling sequence seed bits and may multiply the frozen decode matrix and the LFSR generator matrix to generate a mapping matrix for mapping a value of a scrambling sequence initialization vector that initializes a scrambler to the frozen bits. The device may determine an inverse matrix of the mapping matrix and may multiply the inverse matrix and the frozen decode matrix to obtain a final matrix. The device may utilize the final matrix to recover, from the data of the downlink signal, the scrambling sequence seed bits used to initialize the component and may perform actions based on the scrambling sequence seed bits.
    Type: Application
    Filed: November 26, 2024
    Publication date: March 20, 2025
    Inventors: Onur DIZDAR, Matthew David BROWN, Jiancao HOU, Chi-ming LEUNG, Ata SATTARZADEH HASHEMI, Yi Xien YAP
  • Patent number: 12240864
    Abstract: A phosphine oxide group-contained transition metal complex represented by chemical formula (1), and a polymer, a mixture, a composition, and an organic electronic device.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: March 4, 2025
    Assignees: GUANGZHOU CHINARAY OPTOELECTRONIC MATERIALS LTD., THE UNIVERSITY OF HONG KONG
    Inventors: Chi Ming Leung, Wing-Wah Vivian Yam, Sihang Chen, Hong Huang, Junyou Pan, Caijuan Yan
  • Publication number: 20250070802
    Abstract: A device may receive a downlink signal from a base station and may determine an input-output relation of polar encoding based on a vector of the downlink signal. The device may perform an interleaving operation with a matrix and the input-output relation to obtain an interleaved vector and may utilize rate matching with the interleaved vector to determine a scrambling sequence of the downlink signal. The device may utilize a reverse sequence generator with the scrambling sequence to determine a scrambling sequence initialization vector for the scrambling sequence and may perform one or more actions based on the scrambling sequence initialization vector.
    Type: Application
    Filed: November 13, 2024
    Publication date: February 27, 2025
    Inventors: Onur DIZDAR, Matthew David BROWN, Jiancao HOU, Chi-ming LEUNG, Ata SATTARZADEH HASHEMI, Yi Xien YAP
  • Patent number: 12199641
    Abstract: A device may receive a downlink signal from a base station and may construct a frozen decode matrix for decoding frozen bits from data of the downlink signal. The device may construct a linear feedback shift register (LFSR) generator matrix for a component of scrambling sequence seed bits and may multiply the frozen decode matrix and the LFSR generator matrix to generate a mapping matrix for mapping a value of a scrambling sequence initialization vector that initializes a scrambler to the frozen bits. The device may determine an inverse matrix of the mapping matrix and may multiply the inverse matrix and the frozen decode matrix to obtain a final matrix. The device may utilize the final matrix to recover, from the data of the downlink signal, the scrambling sequence seed bits used to initialize the component and may perform actions based on the scrambling sequence seed bits.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: January 14, 2025
    Assignee: VIAVI Solutions Inc.
    Inventors: Onur Dizdar, Matthew David Brown, Jiancao Hou, Chi-ming Leung, Ata Sattarzadeh Hashemi, Yi Xien Yap
  • Patent number: 12191886
    Abstract: A device may receive a downlink signal from a base station and may determine an input-output relation of polar encoding based on a vector of the downlink signal. The device may perform an interleaving operation with a matrix and the input-output relation to obtain an interleaved vector and may utilize rate matching with the interleaved vector to determine a scrambling sequence of the downlink signal. The device may utilize a reverse sequence generator with the scrambling sequence to determine a scrambling sequence initialization vector for the scrambling sequence and may perform one or more actions based on the scrambling sequence initialization vector.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: January 7, 2025
    Assignee: VIAVI Solutions Inc.
    Inventors: Onur Dizdar, Matthew David Brown, Jiancao Hou, Chi-ming Leung, Ata Sattarzadeh Hashemi, Yi Xien Yap
  • Publication number: 20240392186
    Abstract: The present disclosure relates to an organometallic complex, a mixture, and a composition. The metal complex having a structure as represented by formula (I) or formula (II): The structure of the metal complex provided by the present disclosure includes at least one electron-pulling group such as —CN, —F, or —CF3, and the electron-pulling groups can help the electron transmission in the device.
    Type: Application
    Filed: April 15, 2022
    Publication date: November 28, 2024
    Applicant: GUANGZHOU CHINARAY OPTOELECTRONIC MATERIALS LTD.
    Inventors: Chi Ming LEUNG, Jing ZHANG
  • Publication number: 20240333313
    Abstract: A device may receive a downlink signal from a base station and may construct a frozen decode matrix for decoding frozen bits from data of the downlink signal. The device may construct a linear feedback shift register (LFSR) generator matrix for a component of scrambling sequence seed bits and may multiply the frozen decode matrix and the LFSR generator matrix to generate a mapping matrix for mapping a value of a scrambling sequence initialization vector that initializes a scrambler to the frozen bits. The device may determine an inverse matrix of the mapping matrix and may multiply the inverse matrix and the frozen decode matrix to obtain a final matrix. The device may utilize the final matrix to recover, from the data of the downlink signal, the scrambling sequence seed bits used to initialize the component and may perform actions based on the scrambling sequence seed bits.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 3, 2024
    Inventors: Onur DIZDAR, Matthew David BROWN, Jiancao HOU, Chi-ming LEUNG, Ata SATTARZADEH HASHEMI, Yi Xien YAP
  • Publication number: 20240333311
    Abstract: A device may receive a downlink signal from a base station and may determine an input-output relation of polar encoding based on a vector of the downlink signal. The device may perform an interleaving operation with a matrix and the input-output relation to obtain an interleaved vector and may utilize rate matching with the interleaved vector to determine a scrambling sequence of the downlink signal. The device may utilize a reverse sequence generator with the scrambling sequence to determine a scrambling sequence initialization vector for the scrambling sequence and may perform one or more actions based on the scrambling sequence initialization vector.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 3, 2024
    Inventors: Onur DIZDAR, Matthew David BROWN, Jiancao HOU, Chi-ming LEUNG, Ata SATTARZADEH HASHEMI, Yi Xien YAP
  • Publication number: 20240292428
    Abstract: In some implementations, a user equipment (UE) may perform a decoding of downlink control information (DCI) via a physical downlink control channel (PDCCH) based on: a detection, by the UE, of a UE-specific scrambling sequence and a radio network temporary identifier (RNTI) corresponding to the UE-specific scrambling sequence; and a skipping, by the UE, of a de-scrambling operation prior to the decoding of the DCI, wherein information regarding the UE-specific scrambling sequence and the RNTI is not previously stored by the UE. The UE may refrain from decoding a plurality of possible UE-specific scrambling sequences based on the skipping of the de-scrambling operation prior to the decoding of the DCI.
    Type: Application
    Filed: February 16, 2023
    Publication date: August 29, 2024
    Inventors: Matthew David BROWN, Onur DIZDAR, Jiancao HOU, Chi-ming LEUNG, Ata SATTARZADEH HASHEMI, Yi Xien YAP, Wei LI
  • Publication number: 20240262838
    Abstract: The present application provides a nitrogen-containing heterocyclic compound and uses thereof. The nitrogen-containing heterocyclic compound has a structure represented by formula (1), in which Ar1 is selected from a substituted or unsubstituted aromatic group having 6 to 40 ring atoms or a substituted or unsubstituted heteroaromatic group having 5 to 40 ring atoms, X1 at each occurrence is independently selected from CR2 or N, X2 at each occurrence is independently selected from CR3 or N, X3 at each occurrence is independently selected from CR4 or N, and X4 at each occurrence is independently selected from CR5 or N.
    Type: Application
    Filed: May 19, 2021
    Publication date: August 8, 2024
    Applicant: GUANGZHOU CHINARAY OPTOELECTRONIC MATERIALS LTD.
    Inventors: Chi Ming LEUNG, Ruifeng HE, Yan LI, Haoran WANG
  • Publication number: 20240235734
    Abstract: A device may receive a PDCCH signal, may decode encoded bits of the PDCCH signal to generate coded bits, may reencode the coded bits, and may calculate a detection error probability of each coded bit at an output of soft demodulation. The device may calculate a channel decoding error probability that cyclic redundancy check bits are still attached to the coded bits, and may calculate an error probability of channel reencoding, of each coded bit, due to error propagation of polar decoding and reencoding. The device may calculate a probability density of a BMR associated with the coded bits, and may calculate a threshold based on the detection error probability, the channel decoding error probability, the error probability of channel reencoding, and the probability density of a BMR. The device may determine that the PDCCH signal is invalid based on the BMR being greater than the threshold.
    Type: Application
    Filed: October 21, 2022
    Publication date: July 11, 2024
    Inventors: Jiancao HOU, Wei LI, Matthew David BROWN, Chi-ming LEUNG
  • Publication number: 20240137153
    Abstract: A device may receive a PDCCH signal, may decode encoded bits of the PDCCH signal to generate coded bits, may reencode the coded bits, and may calculate a detection error probability of each coded bit at an output of soft demodulation. The device may calculate a channel decoding error probability that cyclic redundancy check bits are still attached to the coded bits, and may calculate an error probability of channel reencoding, of each coded bit, due to error propagation of polar decoding and reencoding. The device may calculate a probability density of a BMR associated with the coded bits, and may calculate a threshold based on the detection error probability, the channel decoding error probability, the error probability of channel reencoding, and the probability density of a BMR. The device may determine that the PDCCH signal is invalid based on the BMR being greater than the threshold.
    Type: Application
    Filed: October 20, 2022
    Publication date: April 25, 2024
    Inventors: Jiancao HOU, Wei LI, Matthew David BROWN, Chi-ming LEUNG
  • Publication number: 20230303901
    Abstract: An immersion cooling system includes a fluid-retaining container having space for accommodating an electronic device. A heat transfer fluid is in contact with the electronic device. A heat exchanger contacts and condenses vapor from vaporization of the heat transfer fluid. The heat transfer fluid has a thermal conductivity higher than 0.08 W m?1K?1, a dielectric constant (Dk) 20-40 GHz less than 3.0, and a heat of vaporization higher than 150 kJ kg?1, with fire retarding features, compatibility with plastics, metals, rubbers and includes a partially fluorinated compound. The improved immersion cooling system includes fluids with increased thermal conductivity and heat of vaporization while reducing fluid density and maintaining the advantages of the fluid being non-flammable, having high electrical stability and a low dielectric constant.
    Type: Application
    Filed: March 22, 2023
    Publication date: September 28, 2023
    Inventors: Chi Ming LEUNG, Sze Chun YIU, Chi Hin WONG, Chi Ho KWOK, Chenmin LIU
  • Publication number: 20230265066
    Abstract: Provided herein are a series of water-soluble photochromic naphthopyran compounds, a mixture and a polymer thin film comprising the same, and applications thereof in photochromic materials, especially water-soluble photochromic material. The present photochromic naphthopyran compounds display excellent water solubility in neutral pH environment, rapid light response and fast thermal bleaching.
    Type: Application
    Filed: March 8, 2023
    Publication date: August 24, 2023
    Inventors: Chi Ming LEUNG, Chun Hei WONG, Chi Ho KWOK, Chenmin LIU
  • Patent number: 11674080
    Abstract: Disclosed are a transition metal complex, a polymer, a mixture, a composition and the use thereof, wherein the transition metal complex has a structure of the general formula as shown in formula (1): The transition metal complex has a novel structure, and is an iridium (III) complex comprising rigid cycloalkyl groups. Since this type of auxiliary ligand increases the rigidity and symmetry of a molecule, the rigidity of a molecule is increased relative to a common ligand without the cycloalkyl groups, and as such, the whole complex has better chemical, optical, electrical and thermal stabilities. At the same time, since the modification occurs on the auxiliary ligand, the effect on the wavelength of the luminous maximum peak caused by a main ligand is relatively low, and therefore, a saturated luminous color may be retained.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: June 13, 2023
    Assignee: GUANGZHOU CHINARAY OPTOELECTRONIC MATERIALS LTD.
    Inventors: Chi Ming Leung, Hong Huang, Junyou Pan
  • Patent number: 11404651
    Abstract: Disclosed in the present invention are a novel organometallic complex and an application thereof in organic electronic devices, particularly in organic phosphorescent light emitting diodes. The present invention further relates to organic electronic devices, in particular organic light emitting diodes (OLEDs), that comprise the organometallic complex according to the present invention, and an application thereof in display and illumination technologies. By means of optimizing the structure of a device and changing the concentration of the metal complex in a matrix thereof, optimal device performance may be achieved, facilitating the implementation of a high-efficiency, high-brightness and high-stability OLED devices, and providing a better material option for full-color display and illumination applications.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: August 2, 2022
    Assignee: Guangzhou Chinaray Optoelectronic Materials Ltd.
    Inventors: Chi Ming Leung, Hong Huang, Junyou Pan
  • Publication number: 20220064197
    Abstract: A phosphine oxide group-contained transition metal complex represented by chemical formula (1), and a polymer, a mixture, a composition, and an organic electronic device.
    Type: Application
    Filed: December 16, 2019
    Publication date: March 3, 2022
    Applicant: GUANGZHOU CHINARAY OPTOELECTRONIC MATERIALS LTD.
    Inventors: Chi Ming LEUNG, Sihang CHEN, Hong HUANG, Junyou PAN, Caijuan YAN
  • Publication number: 20210083203
    Abstract: Disclosed in the present invention are a novel organometallic complex and an application thereof in organic electronic devices, particularly in organic phosphorescent light emitting diodes. The present invention further relates to organic electronic devices, in particular organic light emitting diodes (OLEDs), that comprise the organometallic complex according to the present invention, and an application thereof in display and illumination technologies. By means of optimizing the structure of a device and changing the concentration of the metal complex in a matrix thereof, optimal device performance may be achieved, facilitating the implementation of a high-efficiency, high-brightness and high-stability OLED devices, and providing a better material option for full-color display and illumination applications.
    Type: Application
    Filed: December 10, 2018
    Publication date: March 18, 2021
    Applicant: GUANGZHOU CHINARAY OPTOELECTRONIC MATERIALS LTD.
    Inventors: Chi Ming LEUNG, Hong HUANG, Junyou PAN
  • Publication number: 20200325393
    Abstract: Disclosed are a transition metal complex, a polymer, a mixture, a composition and the use thereof, wherein the transition metal complex has a structure of the general formula as shown in formula (1): The transition metal complex has a novel structure, and is an iridium (III) complex comprising rigid cycloalkyl groups. Since this type of auxiliary ligand increases the rigidity and symmetry of a molecule, the rigidity of a molecule is increased relative to a common ligand without the cycloalkyl groups, and as such, the whole complex has better chemical, optical, electrical and thermal stabilities. At the same time, since the modification occurs on the auxiliary ligand, the effect on the wavelength of the luminous maximum peak caused by a main ligand is relatively low, and therefore, a saturated luminous color may be retained.
    Type: Application
    Filed: December 6, 2018
    Publication date: October 15, 2020
    Applicant: GUANGZHOU CHINARAY OPTOELECTRONIC MATERIALS LTD.
    Inventors: Chi Ming LEUNG, Hong HUANG, Junyou PAN
  • Publication number: 20190334099
    Abstract: A transition metal complex and an application thereof, a mixture and an organic electronic device, the structure of the transition metal complex being represented by general formula (I), wherein the definition of the symbols in general formula (I) is the same as that provided in the description.
    Type: Application
    Filed: June 13, 2019
    Publication date: October 31, 2019
    Applicant: GUANGZHOU CHINARAY OPTOELECTRONIC MATERIALS LTD.
    Inventors: Chi Ming LEUNG, Hong HUANG, Junyou PAN