Patents by Inventor Chao-Chih Chang

Chao-Chih Chang 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: 20220417730
    Abstract: A method for simultaneous Reception (Rx) or Transmission (Tx) associated with dual subscriber numbers using a single RF device in a User Equipment (UE) is provided. The UE determines whether a trigger condition for enabling simultaneous Rx or Tx operation associated with two separate subscriber numbers is met. In response to the trigger condition being met, the UE reports a first value representing an aggregated bandwidth or a number of CCs or MIMO layers for one of the two separate subscriber numbers to a mobile communication network via the single RF device, so as to enable simultaneous Rx or Tx operation associated with the two separate subscriber numbers. In particular, the first value is less than a second value representing a maximum aggregated bandwidth or a maximum number of CCs or MIMO layers supported by the UE's capability.
    Type: Application
    Filed: December 21, 2021
    Publication date: December 29, 2022
    Inventors: Chih-Yuan TSAI, Chao-Chih CHANG
  • Patent number: 11443723
    Abstract: A musical instrument holder clip includes a first holding unit and a second holding unit. The first holding unit includes a main body and a clamping member that extends movably into the main body, and is operable to generate a clamping force adapted for clamping a microphone between the main body and the clamping member. The second holding unit includes a first holding member adapted for abutting against an outer surface of a bell wall of a wind instrument, and a second holding member adapted for abutting against an inner surface of the bell wall of the wind instrument. The first holding member and the second holding member cooperatively define a holding space adapted for receiving the bell wall of the wind instrument therebetween.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: September 13, 2022
    Assignee: TAIWAN CAROL ELECTRONICS CO., LTD
    Inventor: Chao-Chih Chang
  • Publication number: 20220130354
    Abstract: A musical instrument holder clip includes a first holding unit and a second holding unit. The first holding unit includes a main body and a clamping member that extends movably into the main body, and is operable to generate a clamping force adapted for clamping a microphone between the main body and the clamping member. The second holding unit includes a first holding member adapted for abutting against an outer surface of a bell wall of a wind instrument, and a second holding member adapted for abutting against an inner surface of the bell wall of the wind instrument. The first holding member and the second holding member cooperatively define a holding space adapted for receiving the bell wall of the wind instrument therebetween.
    Type: Application
    Filed: July 28, 2021
    Publication date: April 28, 2022
    Applicant: TAIWAN CAROL ELECTRONICS CO.,LTD.
    Inventor: Chao-Chih CHANG
  • Patent number: 10924845
    Abstract: A microphone includes an outer casing, a carrier disposed in the outer casing, and a sound receiving module connected to the carrier. The carrier has a through hole opposite to the sound receiving module. An airtight unit includes a shock absorber and an airtight member cooperating with the outer casing and the carrier to define an airtight back chamber configured to generate a pneumatic wave when a mechanical vibration wave is transmitted to the outer casing. A damping material closes the through hole and is configured to change the phase of the pneumatic wave when the latter passes therethrough such that the pneumatic wave and the mechanical vibration wave can offset each other when they are transmitted to the sound receiving module.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: February 16, 2021
    Assignee: Taiwan Carol Electronics Co., Ltd
    Inventors: Tzu-Huan Peng, Chung-Chi Lai, Chao-Chih Chang
  • Publication number: 20200366985
    Abstract: A microphone includes an outer casing, a carrier disposed in the outer casing, and a sound receiving module connected to the carrier. The carrier has a through hole opposite to the sound receiving module. An airtight unit includes a shock absorber and an airtight member cooperating with the outer casing and the carrier to define an airtight back chamber configured to generate a pneumatic wave when a mechanical vibration wave is transmitted to the outer casing. A damping material closes the through hole and is configured to change the phase of the pneumatic wave when the latter passes therethrough such that the pneumatic wave and the mechanical vibration wave can offset each other when they are transmitted to the sound receiving module.
    Type: Application
    Filed: March 20, 2020
    Publication date: November 19, 2020
    Inventors: Tzu-Huan Peng, Chung-Chi Lai, Chao-Chih Chang
  • Patent number: 9585065
    Abstract: A method for inter-radio access technology (inter-RAT) performance enhancement in a mobile communications device is provided. First, a first RAT is camped on to perform a first service. Thereafter, it is moved/fallen back to a second RAT from the first RAT to perform a second service. Cell information of the first RAT is then measured and collected during the performance of the second service in the second RAT. A first cell to return to the first RAT is determined according to the collected cell information of the first RAT after a call connection of the second RAT is released.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: February 28, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chi-Chung Lin, Chao-Chih Chang, Yen-Chih Yang, Lin-Chih Chu
  • Patent number: 9578422
    Abstract: A microphone includes a capsule module including a carrier, a primary transducer unit and a secondary transducer unit. The carrier includes a hollow part mounted to a handle unit, and first and second carrier parts extending oppositely from the hollow part. The primary transducer unit is mounted to the first carrier part, and converts sound waves and vibration into a primary electrical signal a first secondary electrical signal, respectively. The secondary transducer unit is mounted to the second carrier part, and converts the vibration into a second secondary electrical signal for counteracting the first secondary electrical signal. The secondary transducer unit includes a diaphragm disposed within an airtight space.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: February 21, 2017
    Assignee: Taiwan Carol Electronics Co., Ltd.
    Inventor: Chao-Chih Chang
  • Publication number: 20160269830
    Abstract: A microphone includes a capsule module including a carrier, a primary transducer unit and a secondary transducer unit. The carrier includes a hollow part mounted to a handle unit, and first and second carrier parts extending oppositely from the hollow part. The primary transducer unit is mounted to the first carrier part, and converts sound waves and vibration into a primary electrical signal a first secondary electrical signal, respectively. The secondary transducer unit is mounted to the second carrier part, and converts the vibration into a second secondary electrical signal for counteracting the first secondary electrical signal. The secondary transducer unit includes a diaphragm disposed within an airtight space.
    Type: Application
    Filed: February 23, 2016
    Publication date: September 15, 2016
    Inventor: Chao-Chih Chang
  • Publication number: 20150350964
    Abstract: A method for inter-radio access technology (inter-RAT) performance enhancement in a mobile communications device is provided. First, a first RAT is camped on to perform a first service. Thereafter, it is moved/fallen back to a second RAT from the first RAT to perform a second service. Cell information of the first RAT is then measured and collected during the performance of the second service in the second RAT. A first cell to return to the first RAT is determined according to the collected cell information of the first RAT after a call connection of the second RAT is released.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 3, 2015
    Applicant: MediaTek Inc.
    Inventors: Chi-Chung LIN, Chao-Chih CHANG, Yen-Chih YANG, Lin-Chih CHU
  • Patent number: 8375560
    Abstract: A method for manufacturing a condenser microphone includes forming a diaphragm module using microelectromechanical system (MEMS) techniques. The diaphragm module includes a diaphragm that is deformable by energy of sound waves, and a diaphragm spacer that extends from one side of the diaphragm and controls a tension of the diaphragm. The method further includes providing a backplate with vent holes, aligning the vent holes of the backplate with a central region of the diaphragm, and connecting the backplate to the diaphragm spacer to construct a transducer unit. The diaphragm spacer, the diaphragm and the backplate cooperate to form an air chamber in fluid communication with an environment external to the condenser microphone. The backplate and the diaphragm cooperate to form a condenser. The method further includes enclosing the transducer unit in a housing that includes a shell and a circuit board to form the condenser microphone.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: February 19, 2013
    Assignee: Taiwan Carol Electronics Co., Ltd.
    Inventors: Jean-Yih Tsai, Chung-Ching Lai, Chao-Chih Chang
  • Publication number: 20120210560
    Abstract: A method for manufacturing a condenser microphone includes forming a diaphragm module using microelectromechanical system (MEMS) techniques. The diaphragm module includes a diaphragm that is deformable by energy of sound waves, and a diaphragm spacer that extends from one side of the diaphragm and controls a tension of the diaphragm. The method further includes providing a backplate with vent holes, aligning the vent holes of the backplate with a central region of the diaphragm, and connecting the backplate to the diaphragm spacer to construct a transducer unit. The diaphragm spacer, the diaphragm and the backplate cooperate to form an air chamber in fluid communication with an environment external to the condenser microphone. The backplate and the diaphragm cooperate to form a condenser. The method further includes enclosing the transducer unit in a housing that includes a shell and a circuit board to form the condenser microphone.
    Type: Application
    Filed: February 22, 2011
    Publication date: August 23, 2012
    Applicant: TAIWAN CAROL ELECTRONICS CO., LTD.
    Inventors: Jean-Yih TSAI, Chung-Ching LAI, Chao-Chih CHANG
  • Patent number: 8031889
    Abstract: An acoustoelectric transformation chip for a ribbon microphone includes a diaphragm that has a vibrating region and two fixing regions disposed on two opposite sides of the vibrating region, and a voice coil film formed on the diaphragm. The voice coil film includes two rectangular voice coils, each of which has a plurality of first and second connection segments parallel to a direction of a magnetic field. A plurality of first and second transverse segments are perpendicular to the first and second connection segments and are connected between the first and second connection segments. The second transverse segments of each voice coil are disposed on one of the fixing regions. The first transverse segments of the two voice coils are disposed in the vibrating region.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: October 4, 2011
    Assignee: National Chung-Hsing University
    Inventors: Ray-Hua Horng, Chao-Chih Chang, Ming-Li Ke, Guan-Wei Chen, Yao-Cheng Tsai
  • Patent number: 7895925
    Abstract: A clamping device includes an elongated seat unit and a clamping lever unit which respectively have mated and mating jaw segments to clamp a to-be-clamped part of an instrument, grip and actuating segments confronting each other, and mount and fulcrum segments pivotally mounted such that, when the actuating segment is turned away from the grip segment, the mating and mated jaw segments are moved toward each other. A lengthwise extending beam is secured to the elongated seat unit, and is spaced apart from the grip segment. A tubular member has an inner peripheral retained surface displaceably engaged with the beam, and an outer rim surface configured to force the actuating segment to permit the mating jaw segment to clamp the to-be-clamped part with an increased friction force when the tubular member is displaced towards the mount segment.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: March 1, 2011
    Assignee: Taiwan Carol Electronics Co., Ltd.
    Inventor: Chao-Chih Chang
  • Publication number: 20100001154
    Abstract: A clamping device includes an elongated seat unit and a clamping lever unit which respectively have mated and mating jaw segments to clamp a to-be-clamped part of an instrument, grip and actuating segments confronting each other, and mount and fulcrum segments pivotally mounted such that, when the actuating segment is turned away from the grip segment, the mating and mated jaw segments are moved toward each other. A lengthwise extending beam is secured to the elongated seat unit, and is spaced apart from the grip segment. A tubular member has an inner peripheral retained surface displaceably engaged with the beam, and an outer rim surface configured to force the actuating segment to permit the mating jaw segment to clamp the to-be-clamped part with an increased friction force when the tubular member is displaced towards the mount segment.
    Type: Application
    Filed: October 2, 2008
    Publication date: January 7, 2010
    Applicant: TAIWAN CAROL ELECTRONICS CO., LTD.
    Inventor: Chao-Chih Chang
  • Publication number: 20090245544
    Abstract: An acoustoelectric transformation chip for a ribbon microphone includes a diaphragm that has a vibrating region and two fixing regions disposed on two opposite sides of the vibrating region, and a voice coil film formed on the diaphragm. The voice coil film includes two rectangular voice coils, each of which has a plurality of first and second connection segments parallel to a direction of a magnetic field. A plurality of first and second transverse segments are perpendicular to the first and second connection segments and are connected between the first and second connection segments. The second transverse segments of each voice coil are disposed on one of the fixing regions. The first transverse segments of the two voice coils are disposed in the vibrating region.
    Type: Application
    Filed: March 24, 2009
    Publication date: October 1, 2009
    Applicant: National Chung-Hsing University
    Inventors: Ray-Hua Horng, Chao-Chih Chang, Ming-Li Ke, Guan-Wei Chen, Yao-Cheng Tsai
  • Patent number: 7469461
    Abstract: A method for making a diaphragm unit of a condenser microphone includes the steps of: forming a liftoff layer on a substrate; forming an insulator diaphragm film on the liftoff layer; and removing the liftoff layer from the diaphragm film and the substrate so as to separate the diaphragm film from the substrate.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: December 30, 2008
    Assignee: Taiwan Carol Electronics Co., Ltd.
    Inventors: Chao-Chih Chang, Ray-Hua Horng, Jean-Yih Tsai, Chung-Chin Lai, Ji-Liang Chen
  • Publication number: 20080298609
    Abstract: A microphone includes first and second magnet units disposed in a head housing and spaced apart from each other in an axial direction of the head housing. The first and second magnet units generate respectively first and second magnetic fields. A response unit is mounted in the head housing, is disposed between the first and second magnet units in the axial direction, and includes a diaphragm, and a conductive wiring disposed at the diaphragm. When the diaphragm vibrates between the first and second magnet units in response to an external sound wave signal, an electrical signal corresponding to the sound wave signal is induced in the conductive wiring as a result of action of the first and second magnetic fields.
    Type: Application
    Filed: June 1, 2007
    Publication date: December 4, 2008
    Applicant: TAIWAN CAROL ELECTRONICS CO., LTD.
    Inventor: Chao-Chih Chang
  • Patent number: 7433478
    Abstract: A microphone pick-up device includes an air chamber unit disposed posteriorly of an annular cap body. A pick-up unit generates an acoustic signal in response to detected sound, and includes a yoke mounted in a front portion of the cap body, a voice coil disposed around a washer and a magnet within the yoke, a diaphragm for covering the yoke and connected to the voice coil, a sound regulating cloth attached to and disposed to surround the cap body, and a sound regulating paper disposed between a rear portion of the cap body and the air chamber unit and covering an air passage unit of the cap body. A signal filter is disposed between the rear portion of the cap body and the air chamber unit, is disposed posteriorly of the sound regulating paper, and is coupled to the voice coil for filtering noise in the acoustic signal.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: October 7, 2008
    Assignee: Taiwan Carol Electronics Co., Ltd.
    Inventor: Chao-Chih Chang
  • Patent number: D630191
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: January 4, 2011
    Assignee: Taiwan Carol Electronics Co., Ltd.
    Inventors: Ching-Lu Chang, Chao-Chih Chang
  • Patent number: D974459
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: January 3, 2023
    Assignee: TAIWAN CAROL ELECTRONICS CO., LTD.
    Inventor: Chao-Chih Chang