Patents by Inventor Chee Lee

Chee Lee 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: 20250240594
    Abstract: An audio rendering system includes a processor that combines audio input signals with personalized spatial audio transfer functions having room responses. The personalized spatial audio transfer functions are selected from a database having a plurality of candidate transfer functions derived from in-ear microphone measurements for a plurality of individuals. Alternatively, the personalized transfer functions are derived from actual in-ear measurements of the listener. A room modification module allows the user to modify the personalized spatial audio transfer functions to substitute a different room or to modify the characteristics of the selected room without requiring additional in ear measurements. The module segments the selected transfer function into regions including one or more of direct; head and torso influenced; early reflection, and late reverberation regions. Extraction and modification operations are performed on one or more of the regions to alter the perceived sound.
    Type: Application
    Filed: April 9, 2025
    Publication date: July 24, 2025
    Applicant: Creative Technology Ltd.
    Inventors: Teck Chee LEE, Christopher HUMMERSONE, Mark Anthony DAVIES, Toh Onn Desmond HII
  • Publication number: 20250240973
    Abstract: A multiple-layer hydrogen barrier stack may be included between a non-volatile memory structure and conductive structures in an interconnect structure in a semiconductor device. The multiple-layer hydrogen barrier stack may minimize and/or prevent hydrogen diffusion into one or more layers of the non-volatile memory structure such as a metal-oxide channel of the non-volatile memory structure. The multiple-layer hydrogen barrier stack may include a hydrogen absorption layer and a hydrogen blocking layer on the hydrogen absorption layer. The hydrogen blocking layer blocks or resists diffusion of hydrogen through the conductive structures into the non-volatile memory structure. The hydrogen absorption layer may absorb any hydrogen atoms that might diffuse through the hydrogen blocking layer.
    Type: Application
    Filed: January 18, 2024
    Publication date: July 24, 2025
    Inventors: Yen-Chieh HUANG, Huai-Ying HUANG, Wei-Gang CHIU, I-Chee LEE, Yu-Ming LIN
  • Publication number: 20250150778
    Abstract: The present disclosure relates to a system and a processing method in association with the system for customizing audio experience. Customization of audio experience can be based on derivation of at least one customized audio response characteristic which can be applied to an audio device used by a person. The customized audio response characteristic(s) can be unique to the person.
    Type: Application
    Filed: January 7, 2025
    Publication date: May 8, 2025
    Applicant: Creative Technology Ltd
    Inventors: Teck Chee Lee, Christopher Hummersone, Toh Onn Desmond Hii
  • Publication number: 20250140729
    Abstract: A molded power package includes a laser-activatable mold compound having laser-activated regions which are plated with an electrically conductive material to form metal pads and/or metal traces at a first side of the mold compound. A semiconductor power die with bond pads is embedded in the laser-activatable mold compound. A bond pad interconnect electrically connects the bond pads of the semiconductor power die to the metal pads and/or metal traces at the first side of the laser-activatable mold compound. The semiconductor power die is mounted on a carrier section of a leadframe. A carrier interconnect section of the leadframe integral with the carrier section electrically connects the carrier section to the metal pads and/or metal traces at the first side of the laser-activatable mold compound. An upper surface of the carrier interconnect section is at a height that is elevated relative to an upper surface of the carrier section.
    Type: Application
    Filed: October 25, 2024
    Publication date: May 1, 2025
    Inventors: Chee Hong Lee, Kok Yau Chua, Chai Chee Lee, Chee Voon Tan, Naveendran Chellamuthu
  • Patent number: 12284509
    Abstract: A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
    Type: Grant
    Filed: May 16, 2024
    Date of Patent: April 22, 2025
    Assignee: CREATIVE TECHNOLOGY LTD
    Inventors: Teck Chee Lee, Geith Mark Benjamin Leslie, Mark Anthony Davies, Edwin Tomboza, Toh Onn Desmond Hii
  • Publication number: 20250089265
    Abstract: A ferroelectric random access memory (FeRAM) cell may include an oxide insertion layer between the electron barrier layer and the metal glue layer of the source/drain regions of the FeRAM cell. The oxide insertion layer may improve the thermal stability of the electron barrier layer and minimize or prevent dissociation and/or out-diffusion of the electron barrier layer at high processing temperatures. Thus, the oxide insertion layer may enable the metal glue layer to be formed over the electron barrier layer with low surface roughness, which may enable increased adhesion between the metal glue layer and the source/drain electrodes of the source/drain regions. In this way, the oxide insertion layer may enable low electrical resistance to be achieved for the FeRAM cell and/or may reduce the likelihood of failures in the FeRAM cell, among other examples.
    Type: Application
    Filed: September 13, 2023
    Publication date: March 13, 2025
    Inventors: Ya-Ling LEE, I-Cheng CHANG, Yen-Chieh HUANG, I-Chee LEE
  • Patent number: 12225371
    Abstract: The present disclosure relates to a system and a processing method in association with the system for customizing audio experience. Customization of audio experience can be based on derivation of at least one customized audio response characteristic which can be applied to an audio device used by a person. The customized audio response characteristic(s) can be unique to the person.
    Type: Grant
    Filed: June 13, 2023
    Date of Patent: February 11, 2025
    Assignee: CREATIVE TECHNOLOGY LTD
    Inventors: Teck Chee Lee, Christopher Hummersone, Toh Onn Desmond Hii
  • Publication number: 20240305949
    Abstract: A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
    Type: Application
    Filed: May 16, 2024
    Publication date: September 12, 2024
    Applicant: Creative Technology Ltd
    Inventors: Teck Chee Lee, Geith Mark Benjamin Leslie, Mark Anthony Davies, Edwin Tomboza, Toh Onn Desmond Hii
  • Patent number: 12022277
    Abstract: A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
    Type: Grant
    Filed: August 2, 2023
    Date of Patent: June 25, 2024
    Assignee: CREATIVE TECHNOLOGY LTD
    Inventors: Teck Chee Lee, Geith Mark Benjamin Leslie, Mark Anthony Davies, Edwin Tomboza, Toh Onn Desmond Hii
  • Publication number: 20240087993
    Abstract: A molded package includes: a semiconductor die; a substrate attached to a bottom side of the semiconductor die; an electrically conductive clip attached to a top side of the semiconductor die; and a mold compound encapsulating the semiconductor die. A top side of the electrically conductive clip faces away from the semiconductor die and has an exposed flat surface that overlays the semiconductor die and is not covered by the mold compound. A bottom side of the electrically conductive clip faces the semiconductor die and has a convex curved surface that is attached to the top side of the semiconductor die. Along a vertical cross-section of the electrically conductive clip from the exposed flat surface to the convex curved surface, the electrically conductive clip has a plano-convex shape delimited by the exposed flat surface and the convex curved surface. A method of producing the molded package is also described.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 14, 2024
    Inventors: Wee Aun Jason Lim, Marie Hazel Barozzo Gabrillo, Chai Chee Lee, Nor Haqimi Mohamed
  • Publication number: 20240006260
    Abstract: A package is disclosed. In one example, the package includes an electronic component and an encapsulant encapsulating at least part of the electronic component. A first electrically conductive structure is arranged on one side of the electronic component, a second electrically conductive structure arranged on an opposing other side of the electronic component and being electrically coupled with the electronic component, and at least one sidewall recess at the encapsulant. The first electrically conductive structure and the second electrically conductive structure are configured to be at different electric potentials during operation of the package. The first electrically conductive structure and the second electrically conductive structure are exposed at opposing main surfaces of the encapsulant.
    Type: Application
    Filed: May 8, 2023
    Publication date: January 4, 2024
    Applicant: Infineon Technologies AG
    Inventors: Chee Hong LEE, Soon Lock GOH, Chai Chee LEE, Swee Kah LEE, Luay Kuan ONG, Chee Voon TAN
  • Patent number: 11849303
    Abstract: An audio rendering system includes a processor that combines audio input signals with personalized spatial audio transfer functions preferably including room responses. The personalized spatial audio transfer functions are selected from a database having a plurality of candidate transfer function datasets derived from in-ear microphone measurements for a plurality of individuals. Alternatively, the personalized transfer function datasets are derived from actual in-ear measurements of the listener. Foreground and background positions are designated and matched with transfer function pairs from the selected dataset for the foreground and background direction and distance. Two channels of input audio such as voice and music are processed. When a voice communication such as a phone call is accepted the music being rendered is moved from a foreground to a background channel corresponding to a background spatial audio position using the personalized transfer functions.
    Type: Grant
    Filed: August 15, 2022
    Date of Patent: December 19, 2023
    Assignee: CREATIVE TECHNOLOGY LTD.
    Inventors: Wong Hoo Sim, Teck Chee Lee
  • Publication number: 20230396221
    Abstract: A push-pull power amplifier (PA) includes a pair of P-type transistors, a pair of N-type transistors, and a splitter, wherein source terminals of the pair of P-type transistors are coupled to a first reference voltage, source terminals of the pair of N-type transistors are coupled to a second reference voltage, and drain terminals of the pair of P-type transistors and drain terminals of the pair of N-type transistors are coupled to an output port of the push-pull PA. The splitter is arranged to receive a common-mode input pair, and provide two differential output pairs to the pair of P-type transistors and the pair of N-type transistors, wherein one of the two differential output pairs is provided to gate terminals of the pair of P-type transistors, and the other of the two differential output pairs is provided to gate terminals of the pair of N-type transistors.
    Type: Application
    Filed: November 10, 2022
    Publication date: December 7, 2023
    Applicant: MediaTek Singapore Pte. Ltd.
    Inventors: Decheng Song, EE-SZE KHOO, Chee-Lee Heng
  • Publication number: 20230386174
    Abstract: There is provided a method for generating a personalized Head Related Transfer Function (HRTF). The method can include capturing an image of an ear using a portable device, auto-scaling the captured image to determine physical geometries of the ear and obtaining a personalized HRTF based on the determined physical geometries of the ear.
    Type: Application
    Filed: August 9, 2023
    Publication date: November 30, 2023
    Applicant: Creative Technology Ltd
    Inventors: Teck Chee Lee, Christopher Tjiongan, Desmond HII, Geith Mark Benjamin Leslie
  • Publication number: 20230379650
    Abstract: A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
    Type: Application
    Filed: August 2, 2023
    Publication date: November 23, 2023
    Applicant: Creative Technology Ltd
    Inventors: Teck Chee Lee, Geith Mark Benjamin Leslie, Mark Anthony Davies, Edwin Tomboza, Toh Onn Desmond Hii
  • Patent number: 11804027
    Abstract: There is provided a method for generating a personalized Head Related Transfer Function (HRTF). The method can include capturing an image of an ear using a portable device, auto-scaling the captured image to determine physical geometries of the ear and obtaining a personalized HRTF based on the determined physical geometries of the ear.
    Type: Grant
    Filed: October 10, 2022
    Date of Patent: October 31, 2023
    Assignee: CREATIVE TECHNOLOGY LTD.
    Inventors: Teck Chee Lee, Christopher Tjiongan, Desmond Hii, Geith Mark Benjamin Leslie
  • Publication number: 20230328474
    Abstract: The present disclosure relates to a system and a processing method in association with the system for customizing audio experience. Customization of audio experience can be based on derivation of at least one customized audio response characteristic which can be applied to an audio device used by a person. The customized audio response characteristic(s) can be unique to the person.
    Type: Application
    Filed: June 13, 2023
    Publication date: October 12, 2023
    Applicant: Creative Technology Ltd
    Inventors: Teck Chee Lee, Christopher Hummersone, Toh Onn Desmond Hii
  • Patent number: 11785412
    Abstract: A headphone for spatial audio rendering includes a first database having an impulse response pair corresponding to a reference speaker location. A head sensor provides head orientation information to a second database having rotation filters, the filters corresponding to different azimuth and elevation positions relative to the reference speaker location. A digital signal processor combines the rotation filters with the impulse response pair to generate an output binaural audio signal to transducers of the headphone. Efficiencies in creating impulse response or HRTF databases are achieved by sampling the impulse response less frequently than in conventional methods. This sampling at coarser intervals reduces the number of data measurements required to generate a spherical grid and reduces the time involved in capturing the impulse responses. Impulse responses for data points falling between the sampled data points are generated by interpolating in the frequency domain.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: October 10, 2023
    Assignee: CREATIVE TECHNOLOGY LTD.
    Inventors: Teck Chee Lee, Geith Mark Benjamin Leslie, Mark Anthony Davies, Edwin Tomboza, Toh Onn Desmond Hii
  • Patent number: 11716587
    Abstract: The present disclosure relates to a system and a processing method in association with the system for customizing audio experience. Customization of audio experience can be based on derivation of at least one customized audio response characteristic which can be applied to an audio device used by a person. The customized audio response characteristic(s) can be unique to the person.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: August 1, 2023
    Assignee: CREATIVE TECHNOLOGY LTD
    Inventors: Teck Chee Lee, Christopher Hummersone, Toh Onn Desmond Hii
  • Publication number: 20230138993
    Abstract: A fiber-based, plastic-free drinking cup is formed by providing a fiber-based slurry comprising a hydrophobic additive and a strength additive, then forming a drinking cup component by compressing and drying the fiber-based slurry in a form press assembly having an internal shape characterized by a conic frustum. The fiber-based slurry may include a dry pulp mixture of virgin fiber and recycled fiber, the hydrophobic additive is 1.0-10.0% of the dry pulp weight, and the strength additive is 1.0-10.0% of the dry pulp weight. In particular, the fiber-based slurry may include about 50% bleached hardwood, about 50% bleached softwood, about 2.5% strength additive, and about 3.5% hydrophobic additive by dry pulp weight.
    Type: Application
    Filed: September 14, 2022
    Publication date: May 4, 2023
    Inventors: Yoke Dou Chung, Yiyun Zhang, Chee Lee