Patents by Inventor PO-HAO TSENG

PO-HAO TSENG 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: 20230145303
    Abstract: The present invention discloses a memory device and operation method thereof. The operation method comprises: programming a plurality of first strings of a plurality of string pairs representing a finite state machine (FSM) to an in-memory-searching (IMS) array of a memory device; programming a plurality of second strings of the string pairs to a working memory of the memory device; and programming a string representing a starting state of the FSM to a buffer of the memory device.
    Type: Application
    Filed: November 8, 2021
    Publication date: May 11, 2023
    Inventor: Po-Hao TSENG
  • 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
  • Publication number: 20230065465
    Abstract: The application discloses an integrated memory device, a manufacturing method and an operation method thereof. The integrated memory cell includes: a first memory cell; and an embedded second memory cell, serially coupled to the first memory cell, wherein the embedded second memory cell is formed on any one of a first side and a second side of the first memory cell.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 2, 2023
    Inventors: Yu-Hsuan LIN, Feng-Min LEE, Po-Hao TSENG
  • 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: 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: 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
  • 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
  • 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
  • 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
  • Publication number: 20230027384
    Abstract: A non-volatile memory and a programming method thereof are provided. The programming method of the non-volatile memory includes the following steps. A coarse programming procedure is performed for programing all of a plurality of memory cells at an erase state to 2?N-1 or 2?N program states. N is a positive integer. A fine programming procedure is performed for pushing all of memory cells into 2?N-1 or 2?N verify levels.
    Type: Application
    Filed: October 27, 2021
    Publication date: January 26, 2023
    Inventors: Po-Hao TSENG, Feng-Min LEE, Yung-Chun LI
  • 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
  • Patent number: 11532337
    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: Grant
    Filed: July 23, 2021
    Date of Patent: December 20, 2022
    Assignee: MACRONIX INTERNATIONAL CO., LTD.
    Inventors: Ming-Hsiu Lee, Po-Hao Tseng
  • Publication number: 20220375526
    Abstract: An analog CAM and an operation method thereof are provided. The analog CAM includes a matching line, an analog CAM cell and a sense amplifier. Each of the at least one analog CAM includes a first floating gate device having a N type channel and a second floating gate device having a P type channel. A match range is set through programming the first floating gate device and the second floating gate device. The sense amplifier is connected to the matching line. If an inputting signal is within the match range, a voltage of the matching line is pulled down to be equal to or lower than a predetermined level. The sense amplifier outputs a match result if the voltage of the matching line is pulled down to a predetermined level.
    Type: Application
    Filed: May 20, 2021
    Publication date: November 24, 2022
    Inventors: Po-Hao TSENG, Feng-Min LEE
  • Publication number: 20220366988
    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: Application
    Filed: May 14, 2021
    Publication date: November 17, 2022
    Inventors: Po-Hao TSENG, Yu-Hsuan LIN, Feng-Min LEE, Ming-Hsiu Lee
  • Publication number: 20220246218
    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: February 3, 2021
    Publication date: August 4, 2022
    Applicant: MACRONIX International Co., Ltd.
    Inventors: Feng-Min Lee, Po-Hao Tseng, Yu-Hsuan Lin, Ming-Hsiu Lee
  • Publication number: 20220237405
    Abstract: A data recognition apparatus and a recognition method are provided. The data recognition apparatus includes a data augmentation device, a feature extractor, and a comparator. The data augmentation device receives a plurality of target information and performs augmentation on each of the target information to generate a plurality of augmented target information. The feature extractor receives queried information and the augmented target information to extract features of the augmented target information and the queried information to respectively generate a plurality of augmented target feature values and a queried feature value. The comparator generates a recognition result according to the queried feature value and the augmented target feature values.
    Type: Application
    Filed: June 10, 2021
    Publication date: July 28, 2022
    Applicant: MACRONIX International Co., Ltd.
    Inventors: Yun-Yuan Wang, Feng-Min Lee, Po-Hao Tseng, Ming-Hsiu Lee