Patents by Inventor Ching-Hsiang Chang

Ching-Hsiang 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).

  • Patent number: 11609872
    Abstract: An integrated circuit in a transmitter includes a multi-lane interface, N signal generating circuits, a lane selection circuit and a control circuit. The multi-lane interface has N lanes. M of the N signal generating circuits are configured to generate M clock signals respectively. (N-M) of the N signal generating circuits are configured to generate (N-M) data signals respectively. The lane selection circuit is configured to select M of the N lanes as M clock lanes by coupling the M clock signals to the M clock lanes respectively, and couple one of the (N-M) data signals to one of remaining (N-M) lanes, serving as (N-M) data lanes, according to a data select signal. The control circuit is configured to generate a data select signal according to a lane identifier of the one of the (N-M) lanes. The data select signal has a signal value mapping to the lane identifier.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: March 21, 2023
    Assignee: M31 TECHNOLOGY CORPORATION
    Inventors: Yueh-Chuan Lu, Ching-Hsiang Chang
  • Patent number: 11567516
    Abstract: A power management circuit includes an inverter circuit and a latch circuit. The inverter circuit is configured to receive a first control signal from an inverter input terminal and generate a second control signal at an inverter output terminal. The first control signal carries power status information of a first supply voltage. The latch circuit has a latch supply terminal, a first latch input terminal and a second latch input terminal. The latch supply terminal is coupled to a second supply voltage becoming ready before the first supply voltage. The first latch input terminal and the second latch input terminal are coupled to the inverter output terminal and the inverter input terminal respectively. The latch circuit is configured to generate a third control signal according to respective signal levels of the first control signal and the second control signal, and accordingly perform power control of an integrated circuit.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: January 31, 2023
    Assignee: M31 TECHNOLOGY CORPORATION
    Inventors: Ching-Hsiang Chang, Chih-Chieh Yao, Chun-Hsiang Lai
  • Publication number: 20220285870
    Abstract: A current transmission assembly and a current transmission system are provided. The current transmission system includes the current transmission assembly and a circuit board structure. The current transmission assembly includes a pluggable component, at least one conductor component, and at least one electrically connecting component. The pluggable component includes a housing, two sets of electrically conductive arms, and two connecting members. Each of the two sets of electrically conductive arms is disposed inside the housing. Each of the conductor components includes an electrical insulator and a wire main body. The electrical insulator encircles the wire main body, so that a first terminal and a second terminal are exposed from the wire main body, and the first terminal is connected to one of the two connecting members. Each of the electrically connecting components includes a connecting portion, to which the second terminal of the wire main body is fixed.
    Type: Application
    Filed: August 30, 2021
    Publication date: September 8, 2022
    Inventors: Ching-Hsiang Chang, XIANG-BIAO TANG, Yen-Lin Chen
  • Patent number: 11414553
    Abstract: A fouling-proof structure is applicable to synthetic leather or fabric and it includes an alcohol-resistant layer; and a water-based fouling-proof layer disposed on the alcohol-resistant layer, wherein the alcohol-resistant layer is formed by curing an alcohol-resistant combination, and the alcohol-resistant combination comprises polyurethane resin, wherein the water-based fouling-proof layer is formed by curing a water-based fouling-proof combination, and the water-based fouling-proof combination comprises polyurethane resin, water, polymerized siloxanes, water-based PTFE and silicone oil.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: August 16, 2022
    Assignee: JANTEC CORP.
    Inventors: Ching-Hsiang Chang, Kuo-Hsing Yeh, Chun-Chieh Wang
  • Patent number: 11411574
    Abstract: A clock and data recovery circuit includes a phase detector (PD), a phase frequency detector (PFD), a multiplexer circuit, a conversion stage and an oscillator. The PD detects a difference in phase between a data signal and an oscillating signal to generate a first set of error signals. The PFD detects a difference in phase and frequency between a reference clock signal and the oscillating signal to generate a second set of error signals. The multiplexer circuit selectively outputs the first set of error signals or the second set of error signals as a third set of error signals according to a selection signal. The conversion stage determines a set of gains according to the selection signal, and converts the third set of error signals with the set of gains to generate a set of input signals. The oscillator generates the oscillating signal according to the set of input signals.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: August 9, 2022
    Assignee: M31 TECHNOLOGY CORPORATION
    Inventors: Cheng-Liang Hung, Ching-Hsiang Chang
  • Patent number: 11211750
    Abstract: An electrical connector assembly includes a plug connector and a receptacle connector each equipped with a grounding bar. The plug connector includes an insulative plug housing with a mating tongue, and a plurality of stationary plug contacts retained in the plug housing. The plug contacts include a plurality of signal contacts and a plurality of grounding contacts. The grounding bar forms a set of first fingers, a set of second fingers and a set pf third fingers respectively located at different positions, to respectively contact the different three positions of the respective grounding contacts.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: December 28, 2021
    Assignees: FOXCONN (KUNSHAN) COMPUTER CONNECTOR CO., LTD., FOXCONN INTERCONNECT TECHNOLOGY LIMITED
    Inventors: Tsu-Yang Wu, Ching-Hsiang Chang, Wei-Chou Lin
  • Publication number: 20210399733
    Abstract: A phase-locked loop circuit includes a phase frequency detector (PHD) circuit, a digital code generator circuit, a frequency divider and an oscillator circuit. The PFD circuit is configured to detect a difference in phase and frequency between a reference clock and a feedback clock to generate a first control signal and a second control signal. The digital code generator circuit is configured to process the second control signal to generate a digital code. The frequency divider is configured to receive an output clock to generate the feedback clock. The oscillator circuit is configured to generate the output clock according to the first control signal and the digital code. A frequency of the output clock is determined according to a first control parameter and a second control parameter of different types. The first and second control parameters are adjusted in response to the first control signal and the digital code respectively.
    Type: Application
    Filed: June 23, 2021
    Publication date: December 23, 2021
    Inventors: CHING-HSIANG CHANG, YU-HSUN CHIEN
  • Publication number: 20210311512
    Abstract: A voltage regulator circuit includes a first amplifier, a second amplifier and a transistor. Respective first input terminals of the first and second amplifiers are coupled to a first reference voltage and a second reference voltage, respectively. A connection terminal of the transistor is coupled to a supply voltage. A control terminal of the transistor is selectively coupled to one of respective output terminals of the first and second amplifiers. When the control terminal of the transistor is coupled to the output terminal of the first amplifier, another connection terminal of the transistor is coupled to a second input terminal of the first amplifier to output a regulated voltage. When the control terminal of the transistor is coupled to the output terminal of the second amplifier, the another connection terminal of the transistor is coupled to a second input terminal of the second amplifier to output the regulated voltage.
    Type: Application
    Filed: April 6, 2021
    Publication date: October 7, 2021
    Inventors: CHING-HSIANG CHANG, YU-HSUN CHIEN
  • Publication number: 20210314135
    Abstract: A clock and data recovery circuit includes a phase detector (PD), a phase frequency detector (PFD), a multiplexer circuit, a conversion stage and an oscillator. The PD detects a difference in phase between a data signal and an oscillating signal to generate a first set of error signals. The PFD detects a difference in phase and frequency between a reference clock signal and the oscillating signal to generate a second set of error signals. The multiplexer circuit selectively outputs the first set of error signals or the second set of error signals as a third set of error signals according to a selection signal. The conversion stage determines a set of gains according to the selection signal, and converts the third set of error signals with the set of gains to generate a set of input signals. The oscillator generates the oscillating signal according to the set of input signals.
    Type: Application
    Filed: March 29, 2021
    Publication date: October 7, 2021
    Inventors: CHENG-LIANG HUNG, CHING-HSIANG CHANG
  • Publication number: 20210303490
    Abstract: An integrated circuit in a transmitter includes a multilane interface, N signal generating circuits, a lane selection circuit and a control circuit. The multi lane interface has N lanes. M of the N signal generating circuits are configured to generate M clock signals respectively, (N-M) of the N signal generating circuits are configured to generate (N-M) data signals respectively. The lane selection circuit is configured to select M of the N lanes as M clock lanes by coupling the M clock signals to the M clock lanes respectively, and couple one of the (N-M) data signals to one of remaining (N-M) lanes, serving as (N-M) data lanes, according to a data select signal. The control circuit is configured to generate a data select signal according to a lane identifier of the one of the (N-M) lanes.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 30, 2021
    Inventors: YUEH-CHUAN LU, CHING-HSIANG CHANG
  • Patent number: 11055241
    Abstract: An integrated circuit in a physical layer of a receiver is provided. The integrated circuit includes a multi-lane interface, a lane selection circuit and N sampling circuits. The multi-lane interface has N lanes. N is an integer greater than one. The lane selection circuit, coupled to the multi-lane interface, is configured to select M of the N lanes as M clock lanes, and output M signals on the M clock lanes respectively. M is a positive integer less than N. Remaining (N?M) lanes serve as (N?M) data lanes. The N sampling circuits are coupled to the multi-lane interface and the lane selection circuit. (N?M) of the N sampling circuits are coupled to the (N?M) data lanes respectively. Each of the (N?M) sampling circuits is configured to sample a signal on one of the (N?M) data lanes according to one of the M signals on the M clock lanes.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: July 6, 2021
    Assignee: M31 TECHNOLOGY CORPORATION
    Inventors: Yueh-Chuan Lu, Ching-Hsiang Chang
  • Patent number: 11012087
    Abstract: A physical layer circuit at a transmitter includes an encoding chain and a plurality of flip-flops. The encoding chain, including encoding units coupled in series, is configured to encode a plurality of symbols to generate a plurality of first wire states. The encoding units are arranged to receive the symbols respectively, and convert respective symbol values of the symbols to the first wire states respectively. A first encoding unit is configured to convert a symbol value of a corresponding symbol according to a second wire state provided by a second encoding unit. The flip-flops are arranged to receive and output the first wire states according to a clock signal, respectively. One of the flip-flops is coupled between the first encoding unit and the second encoding unit. The second wire state provided by the second encoding unit is sent to the first encoding unit through the one of the flip-flops.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: May 18, 2021
    Assignee: M31 TECHNOLOGY CORPORATION
    Inventors: Ching-Hsiang Chang, Yueh-Chuan Lu
  • Publication number: 20210101422
    Abstract: The present disclosure discloses a tire pressure sensor burning device for burning at least one tire pressure sensor having or being externally inputted an exclusive code and a joint code. The tire pressure sensor burning device includes a burning tool in which a communication protocol is stored, and the burning tool includes a transmitting unit connected with the tire pressure sensor and sending a switch command thereto for switching the mode of the tire pressure sensor from the exclusive code to the joint code. The burning tool sends a burning command to the tire pressure sensor with the transmitting unit, and unilaterally burns the communication protocol into the tire pressure sensor via the joint code.
    Type: Application
    Filed: July 29, 2020
    Publication date: April 8, 2021
    Inventors: JI-LIANG CHEN, CHING-HSIANG CHANG
  • Publication number: 20210067113
    Abstract: A driver circuit includes a first output terminal, a first switch, a second switch, a third switch and a power source. The first output terminal is arranged for outputting a data output. The first switch is selectively coupled between the first output terminal and a power supply node according to a data input. The second switch is selectively coupled between the first output terminal and a first reference node according to the data input. The third switch is selectively coupled between the first reference node and a reference voltage. The power source is configured to selectively provide one of a supply voltage signal and a supply current signal to the power supply node. When the power source is configured to provide the supply voltage signal, the third switch is switched on. When the power source is configured to provide the supply current signal, the third switch is switched off.
    Type: Application
    Filed: October 22, 2020
    Publication date: March 4, 2021
    Inventor: CHING-HSIANG CHANG
  • Publication number: 20210040332
    Abstract: A fouling-proof structure is applicable to synthetic leather or fabric and it includes an alcohol-resistant layer; and a water-based fouling-proof layer disposed on the alcohol-resistant layer, wherein the alcohol-resistant layer is formed by curing an alcohol-resistant combination, and the alcohol-resistant combination comprises polyurethane resin, wherein the water-based fouling-proof layer is formed by curing a water-based fouling-proof combination, and the water-based fouling-proof combination comprises polyurethane resin, water, polymerized siloxanes, water-based PTFE and silicone oil.
    Type: Application
    Filed: March 6, 2020
    Publication date: February 11, 2021
    Inventors: CHING-HSIANG CHANG, KUO-HSING YEH, CHUN-CHIEH WANG
  • Publication number: 20210040349
    Abstract: A method of producing a fouling-proof structure, comprising steps of a) coating an alcohol-resistant combination on a substrate and then drying the alcohol-resistant combination at 80-160° C. to form an alcohol-resistant layer; and b) coating a water-based fouling-proof combination on the alcohol-resistant layer and then drying the water-based fouling-proof combination above 140° C. to form a water-based fouling-proof layer, wherein the alcohol-resistant layer is formed by curing an alcohol-resistant combination, and the alcohol-resistant combination comprises polyurethane resin, wherein the water-based fouling-proof layer is formed by curing a water-based fouling-proof combination, and the water-based fouling-proof combination comprises polyurethane resin, water, polymerized siloxanes, water-based PTFE and silicone oil.
    Type: Application
    Filed: March 6, 2020
    Publication date: February 11, 2021
    Inventors: CHING-HSIANG CHANG, KUO-HSING YEH, CHUN-CHIEH WANG
  • Publication number: 20210044060
    Abstract: An electrical connector assembly includes a plug connector and a receptacle connector each equipped with a grounding bar. The plug connector includes an insulative plug housing with a mating tongue, and a plurality of stationary plug contacts retained in the plug housing. The plug contacts include a plurality of signal contacts and a plurality of grounding contacts. The grounding bar forms a set of first fingers, a set of second fingers and a set pf third fingers respectively located at different positions, to respectively contact the different three positions of the respective grounding contacts.
    Type: Application
    Filed: August 7, 2020
    Publication date: February 11, 2021
    Inventors: TSU-YANG WU, CHING-HSIANG CHANG, WEI-CHOU LIN
  • Publication number: 20210004030
    Abstract: A power management circuit includes an inverter circuit and a latch circuit. The inverter circuit is configured to receive a first control signal from an inverter input terminal and generate a second control signal at an inverter output terminal. The first control signal carries power status information of a first supply voltage. The latch circuit has a latch supply terminal, a first latch input terminal and a second latch input terminal. The latch supply terminal is coupled to a second supply voltage becoming ready before the first supply voltage. The first latch input terminal and the second latch input terminal are coupled to the inverter output terminal and the inverter input terminal respectively. The latch circuit is configured to generate a third control signal according to respective signal levels of the first control signal and the second control signal, and accordingly perform power control of an integrated circuit.
    Type: Application
    Filed: July 6, 2020
    Publication date: January 7, 2021
    Inventors: CHING-HSIANG CHANG, CHIH-CHIEH YAO, CHUN-HSIANG LAI
  • Patent number: 10886882
    Abstract: A load circuit includes a first resistive element, a first transistor and a tristate control circuit. The first transistor has a first control terminal, a first connection terminal and a second connection terminal. The first connection terminal is coupled to to one of a first amplifier output terminal and a connection node through the first resistive element. The second connection terminal is coupled to the other of the first amplifier output terminal and the connection node. The tristate control circuit has a signal output terminal coupled to the first control terminal. When the signal output terminal is in the low impedance state, the first control terminal is arranged to receive a first control signal outputted from the signal output terminal. When the signal output terminal is in the high impedance state, the first control terminal is arranged to receive a second control signal different from the first control signal.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: January 5, 2021
    Assignee: M31 TECHNOLOGY CORPORATION
    Inventor: Ching-Hsiang Chang
  • Publication number: 20200252037
    Abstract: A load circuit includes a first resistive element, a first transistor and a tristate control circuit. The first transistor has a first control terminal, a first connection terminal and a second connection terminal. The first connection terminal is coupled to to one of a first amplifier output terminal and a connection node through the first resistive element. The second connection terminal is coupled to the other of the first amplifier output terminal and the connection node. The tristate control circuit has a signal output terminal coupled to the first control terminal. When the signal output terminal is in the low impedance state, the first control terminal is arranged to receive a first control signal outputted from the signal output terminal. When the signal output terminal is in the high impedance state, the first control terminal is arranged to receive a second control signal different from the first control signal.
    Type: Application
    Filed: February 1, 2019
    Publication date: August 6, 2020
    Inventor: CHING-HSIANG CHANG