Patents by Inventor Ming-Hsiu Lee

Ming-Hsiu 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: 20230253032
    Abstract: An in-memory computation device and computation method are provided. The in-memory computation method includes: providing a memory cell block of a memory cell array to store a plurality of weight values, and providing a plurality of memory cells on the memory cell block to store a plurality of corresponding bits of each of the weight values; respectively transmitting a plurality of input signals to the plurality of bit lines through an input buffer; providing the plurality of memory cells to perform a multiplication operation of the plurality of input signals and the plurality of weight values to generate a plurality of first operation results respectively corresponding to a plurality of bit orders; and performing an addition operation on the plurality of first operation results to generate a second operation result according to the plurality of bit orders by a sense amplifier.
    Type: Application
    Filed: April 19, 2023
    Publication date: August 10, 2023
    Applicant: MACRONIX International Co., Ltd.
    Inventors: Yu-Hsuan Lin, Po-Hao Tseng, Feng-Min Lee, Ming-Hsiu Lee
  • Publication number: 20230236967
    Abstract: A memory device, for executing an anneal computation with first state and a second state. The memory device includes a first memory array, a second memory array, a control circuit, a sensing circuit and a processing circuit. the control circuit selects a first horizontal row of memory units from the first memory array, and selects a second horizontal row of memory units from the second memory array. The sensing circuit computes a local energy value of the first state according to the current generated by the memory units of the first horizontal row, and computes a local energy value of the second state according to the current generated by the memory units of the second horizontal row. The processing circuit updates the first state and/or the second state according to the local energy value of the first state and the local energy value of the second state.
    Type: Application
    Filed: April 18, 2022
    Publication date: July 27, 2023
    Inventors: Yun-Yuan WANG, Cheng-Hsien LU, Ming-Hsiu LEE
  • Patent number: 11664070
    Abstract: An in-memory computation device and computation method are provided. The in-memory computation device, including a memory cell array, an input buffer, and a sense amplifier, is provided. The memory cell array includes a memory cell block. The memory cell block corresponds to at least one word line, and stores multiple weight values. Memory cells on the memory cell block respectively store multiple bits of each weight value. The input buffer is coupled to multiple bit lines, and respectively transmits multiple input signals to the bit lines. The memory cell array performs a multiply-add operation on the input signals and the weight values to generate multiple first operation results corresponding to multiple bit orders. The sense amplifier adds the first operation results to generate a second operation result according to the bit orders corresponding to the first operation results.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: May 30, 2023
    Assignee: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Yu-Hsuan Lin, Po-Hao Tseng, Feng-Min Lee, Ming-Hsiu Lee
  • Publication number: 20230154535
    Abstract: A TCAM comprises a plurality of first search lines, a plurality of second search lines, a plurality of memory cell strings and one or more current sensing units. The memory cell strings comprise a plurality of memory cells. The current sensing units are coupled to the memory cell strings. In a search operation, a determination that whether any of the data stored in the memory cell strings matches a data string to be searched is made according to whether the one or more current sensing units detect current from the memory cell strings, or according to the magnitude of the current flowing out from the memory cell strings detected by the one or more current sensing units. Each memory cell includes a first transistor and a second transistor. Gates of the first and second transistors are coupled to a corresponding first search line and a corresponding second search line.
    Type: Application
    Filed: January 18, 2023
    Publication date: May 18, 2023
    Inventors: Po-Hao TSENG, Feng-Min LEE, Ming-Hsiu LEE
  • Patent number: 11644374
    Abstract: A left and right feet pedaling analysis system is disclosed, comprising a pedaling sensing device and an electronic carrier, wherein the pedaling sensing device includes one or more transmission units and one or more accelerometers which are applied to detect the acceleration change data during pedaling, and the pedaling sensing device or/and the electronic carrier can analyze the signals coming from the accelerometer during riding the bicycle in order to acquire the pedaling rotation number, the ratio of the left and right foot forces as well as the installation direction thereby understanding the pedaling distribution ratio of the left and right foot when riding; as such, it can help improve the pedaling skills and adjust the pedaling force mode so as to reduce the risk of injury caused by excessively unbalanced pedaling asymmetry.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: May 9, 2023
    Assignee: NATIONAL TAIWAN NORMAL UNIVERSITY
    Inventors: Tzyy-Yuang Shiang, Yin-Shin Lee, Ming-Hsiu Lee, Yu-Cheng Chiu
  • Publication number: 20230118468
    Abstract: A memory device and a computing method thereof are provided in the present disclosure. The computing method includes the following steps. A plurality of input-values of a model computation are respectively received through a plurality of first-word-lines of a memory array. Inverted logic values of the input-values are respectively received through a plurality of second-word-lines. The input-values are respectively received through a plurality of first-bit-lines. The inverted logic values are respectively received through a plurality of second-bit-lines. Logic XNOR operation is performed according to each of the input-values and each of the inverted values to obtain a first computation result, and multiplied with one of self-coefficients or one of mutual coefficients of the model computation to obtain a plurality of output-values. The output-values are outputted through a plurality of common-source-lines.
    Type: Application
    Filed: October 15, 2021
    Publication date: April 20, 2023
    Inventors: Yun-Yuan WANG, Ming-Liang WEI, Ming-Hsiu LEE, Cheng-Hsien LU
  • Publication number: 20230095392
    Abstract: A flash memory cell includes a rectifying device and a transistor. The rectifying device has an input end coupled to a bit line. The transistor has a charge storage structure. The transistor has a first end coupled to an output end of the rectifying device, the transistor has a second end coupled to a source line, and a control end of the transistor is coupled to a word line.
    Type: Application
    Filed: December 1, 2022
    Publication date: March 30, 2023
    Applicant: MACRONIX International Co., Ltd.
    Inventors: Feng-Min Lee, Po-Hao Tseng, Yu-Hsuan Lin, Ming-Hsiu Lee
  • Publication number: 20230090194
    Abstract: The application provides a Content Addressable Memory (CAM) cell, a CAM memory device and an operation method thereof. The CAM cell includes: a plurality of parallel-coupled flash memory cells: wherein a storage data of the CAM cell is based on a combination of a plurality of threshold voltages of the parallel-coupled flash memory cells.
    Type: Application
    Filed: September 10, 2021
    Publication date: March 23, 2023
    Inventors: Po-Hao TSENG, Feng-Min LEE, Ming-Hsiu LEE
  • Publication number: 20230075257
    Abstract: A multilevel content addressable memory, a multilevel coding method and a multilevel searching method are provided. The multilevel coding method includes the following steps. A highest decimal value of a multilevel-bit binary data is obtained. A length of a digital string data is set as being the highest decimal value of the multilevel-bit binary data. The multilevel-bit binary data is converted into the digital string data. If a content of the multilevel-bit binary data is an exact value, a number of an indicating bit in the digital string data is the exact value.
    Type: Application
    Filed: November 16, 2022
    Publication date: March 9, 2023
    Inventors: Ming-Hsiu LEE, Po-Hao TSENG
  • Publication number: 20230061496
    Abstract: A memory cell for an analog content-addressable memory is provided. The memory cell includes an N-type transistor, a P-type transistor, and a current control circuit. The gate of the N-type transistor is configured to receive a first input signal. The gate of the P-type transistor is configured to receive a second input signal. The current control circuit is coupled to at least one of the N-type transistor and the P-type transistor. The current control circuit is configured to generate at least one passing current. When the input voltages of the first input signal and the second input signal are within a matching range, the N-type transistor and the P-type transistor are turned on, and the passing current is substantially a fixed current value. The matching range is related to the threshold voltages of the N-type transistor and the P-type transistor, and the fixed current value.
    Type: Application
    Filed: September 1, 2021
    Publication date: March 2, 2023
    Inventors: Po-Hao TSENG, Feng-Min LEE, Ming-Hsiu LEE
  • Patent number: 11587617
    Abstract: A TCAM comprises a plurality of first search lines, a plurality of second search lines, a plurality of memory cell strings and one or more current sensing units. The memory cell strings comprise a plurality of memory cells. Each of the memory cells is coupled to one of the first search lines and one of the second search lines. The current sensing units, coupled to the memory cell strings. In a search operation, a determination that whether any of the data stored in the memory cell strings matches a data string to be searched is made according to whether the one or more current sensing units detect current from the memory cell strings, or according to the magnitude of the current flowing out from the memory cell strings detected by the one or more current sensing units.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: February 21, 2023
    Assignee: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Po-Hao Tseng, Feng-Min Lee, Ming-Hsiu Lee, Liang-Yu Chen, Yun-Yuan Wang
  • Patent number: 11586900
    Abstract: Machine learning of model parameters for a neural network using a computing system is provided, that produces error-aware model parameters. An iterative process to converge on trained model parameters to be applied in the inference engine, includes applying a sequence of input training data sets to a neural network to produce inference results for the sequence using a set of model parameters in the neural network combined with factors based on a model of non-ideal characteristics of target memory to provide a training set of model parameters. An inference engine using the target memory technology to store the model parameters can have more stable results across a large number of engines.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: February 21, 2023
    Assignee: MACRONIX INTERNATIONAL CO., LTD.
    Inventor: Ming-Hsiu Lee
  • Patent number: 11587611
    Abstract: A memory device for data searching and a data searching method thereof are provided. The data searching method includes the following steps. A searching word is received and then divided into a plurality of sections. The sections are encoded as a plurality of encoded sections, so that the encoded sections may correspond to a plurality of memory blocks in a memory array. The encoded sections are directed into the memory blocks to perform data comparisons and obtaining a respective result of data comparison. Thereafter, addresses of bit lines which match the searching word are obtained according to respective result of data comparison for each of memory block.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: February 21, 2023
    Assignee: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Ming-Hsiu Lee, Po-Hao Tseng, Yu-Hsuan Lin
  • Patent number: 11587623
    Abstract: A content-address memory (CAM) and an operation method are provided. The content-address memory comprises: a plurality of first signal lines; a plurality of second signal lines; and a plurality of CAM memory cells coupled to the first signal lines and the second signal lines, wherein in data match, a plurality of input signals are input into the CAM memory cells via the first signal lines; the input signals are compared with contents stored in the CAM memory cells; and a match result is determined based on an electrical characteristic of the second signal lines.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: February 21, 2023
    Assignee: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Po-Hao Tseng, Yu-Hsuan Lin, Feng-Min Lee, Ming-Hsiu Lee
  • Patent number: 11586418
    Abstract: A random number generator, a random number generating circuit, and a random number generating method are provided. The random number generating circuit includes the random number generator and executes the random number generating method. The random number generator includes a shift register having N storage elements and a combinational logic circuit. The N storage elements receive a random seed in a static state and repetitively perform a bit shift operation in a plurality of clock cycles. The combinational logic circuit generates an output sequence based on the random seed and a random bitstream received from an external source.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: February 21, 2023
    Assignee: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Po-Hao Tseng, Ming-Hsiu Lee, Yu-Hsuan Lin
  • Publication number: 20230045495
    Abstract: A memory device includes a stack and a plurality of memory strings. The stack is disposed on the substrate, and the stack includes a plurality of conductive layers and a plurality of insulating layers alternately stacked. The memory strings pass through the stack along a first direction, wherein a first memory string in the memory strings includes a first conductive pillar and a second conductive pillar, a channel layer, and a memory structure. The first conductive pillar and the second conductive pillar respectively extend along the first direction and are separated from each other. The channel layer is disposed between the first conductive pillar and the second conductive pillar. The memory structure surrounds the second conductive pillar, and the memory structure includes a resistive memory material.
    Type: Application
    Filed: August 3, 2021
    Publication date: February 9, 2023
    Inventors: Feng-Min LEE, Erh-Kun LAI, Dai-Ying LEE, Yu-Hsuan LIN, Po-Hao TSENG, Ming-Hsiu LEE
  • Publication number: 20230036141
    Abstract: The application provides a content addressable memory (CAM) cell, a CAM memory device and an operation method thereof, and a method for searching and comparing data. The CAM cell includes a first flash memory cell having a first terminal for receiving a first search voltage; and a second flash memory cell having a first terminal for receiving a second search voltage, a second terminal of the first flash memory cell electrically connected to a second terminal of the second flash memory cell, wherein the first flash memory cell and the second flash memory cell are serially connected; and a storage data of the CAM cell is based on a combination of a plurality of threshold voltages of the first flash memory cell and the second flash memory cell.
    Type: Application
    Filed: November 12, 2021
    Publication date: February 2, 2023
    Inventors: Po-Hao TSENG, Feng-Min LEE, Ming-Hsiu Lee
  • Patent number: 11569227
    Abstract: A three-way switch array structure including N first connectors, M second connectors, N×M third connectors and N×M three-way switches is provided, each three-way switch has a first terminal, a second terminal, a third terminal, a first switch and a second switch. Each of first terminals is disposed on one of the first connectors, each of second terminals is disposed on one of the second connectors, and each of third terminals is disposed on one of the third connectors, the first switch is disposed between the first terminal and the third terminal, and the second switch is disposed between the second terminal and the third terminal, wherein N and M are positive integers greater than or equal to 1.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: January 31, 2023
    Assignee: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Shih-Hung Chen, Ming-Hsiu Lee
  • Publication number: 20230022008
    Abstract: A memory device for data searching and a data searching method thereof are provided. The data searching method includes the following steps. A searching word is received and then divided into a plurality of sections. The sections are encoded as a plurality of encoded sections, so that the encoded sections may correspond to a plurality of memory blocks in a memory array. The encoded sections are directed into the memory blocks to perform data comparisons and obtaining a respective result of data comparison. Thereafter, addresses of bit lines which match the searching word are obtained according to respective result of data comparison for each of memory block.
    Type: Application
    Filed: July 20, 2021
    Publication date: January 26, 2023
    Inventors: Ming-Hsiu LEE, Po-Hao TSENG, Yu-Hsuan LIN
  • Patent number: 11557354
    Abstract: A flash memory cell includes a rectifying device and a transistor. The rectifying device has an input end coupled to a bit line. The transistor has a charge storage structure. The transistor has a first end coupled to an output end of the rectifying device, the transistor has a second end coupled to a source line, and a control end of the transistor is coupled to a word line.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: January 17, 2023
    Assignee: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Feng-Min Lee, Po-Hao Tseng, Yu-Hsuan Lin, Ming-Hsiu Lee