Patents by Inventor Yi Song

Yi Song 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: 11935593
    Abstract: An apparatus includes a control circuit configured to connect to memory cells connected in series in NAND strings. Each NAND string includes a plurality of data memory cells coupled to a plurality of data word lines in series with a plurality of dummy memory cells connected to a plurality of dummy word lines. The control circuit configured to apply a first dummy word line voltage to one or more dummy word lines of the plurality of dummy word lines in a verify step of a program operation to program data memory cells. The control circuit is configured to apply a second dummy word line voltage to the one or more dummy word lines in a read operation to read the data memory cells.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: March 19, 2024
    Assignee: SanDisk Technologies LLC
    Inventors: Yi Song, Jiahui Yuan, Xiang Yang
  • Publication number: 20240086074
    Abstract: An apparatus includes a control circuit configured to connect to NAND strings that are connected to bit lines, where each bit line is connected to a plurality of NAND strings in a corresponding plurality of regions of a block. The control circuit is configured to apply a read voltage in read operations directed to NAND strings of the plurality of regions of the block and subsequently adjust the read voltage by a first predetermined amount for read operations directed to NAND strings of a first region of the block. The control circuit is further configured to adjust the read voltage by a second predetermined amount for read operations directed to NAND strings of a second region of the block. The first and second predetermined amounts are based on respective locations of the first and second regions in the block.
    Type: Application
    Filed: September 8, 2022
    Publication date: March 14, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Yi Song, Jiahui Yuan, Yanjie Wang
  • Publication number: 20240081056
    Abstract: A double patterning method of manufacturing select gates and word lines is provided in the present invention, including forming first string patterns composed of word line patterns and select gate patterns on a target layer, forming a conformal spacer layer on first string patterns, wherein the spacer layer forms trenches between first string patterns, forming a fill layer filling up the trenches on the spacer layer, removing fill layer outside of the trenches, so that fill layer in the trenches forms second string patterns, wherein the second string patterns and the first string patterns are spaced apart, removing exposed spacer layer, so that the first string patterns and the second string patterns constitute target patterns spaced apart from each other on the target layer, and performing an etching process using those target patterns as a mask to remove exposed target layer, so as to form word lines and select gates.
    Type: Application
    Filed: April 25, 2023
    Publication date: March 7, 2024
    Applicant: Powerchip Semiconductor Manufacturing Corporation
    Inventors: Yi-Yeh Chuang, Zih-Song Wang, Li-Ta Chen, Shun-Yu Gao
  • Publication number: 20240056998
    Abstract: Described herein is a system with a first network element and a second network element. The first network element contains a processor configured to synchronize with the second network element; and maintain synchronization with the second network element. The first network element is a small cell eNB and the second network element is one of the following: a macro cell enhanced node-B (eNB); or a small cell eNB.
    Type: Application
    Filed: October 23, 2023
    Publication date: February 15, 2024
    Inventors: Hua Xu, Shiwei Gao, Yajun Zhu, Zhijun Cai, Chandra Sekhar Bontu, Yi Song
  • Patent number: 11902350
    Abstract: This application provides a video processing method and apparatus. The method includes: adding, by a server, perception attribute information of an object and spatial location information of the object to a video bitstream or a video file, and encapsulating the video bitstream or the video file, where the perception attribute information is used to indicate a property presented when the object is perceived by a user; and obtaining, by a terminal device, the video bitstream or the video file that carries the perception attribute information of the object and the spatial location information of the object, and performing perception rendering on a perception attribute of the object based on behavior of the user, the perception attribute information of the object and the spatial location information of the object.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: February 13, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yi Song, Peiyun Di, Xuhong Zeng, Maozheng Liu, Jun Zha, Jiantong Zhou
  • Publication number: 20240046996
    Abstract: In a non-volatile memory, to achieve a shallow and tight erased threshold voltage distribution, a process is performed that includes erasing a group of non-volatile memory cells, identifying a first set of the bit lines that are connected to non-volatile memory cells of the group that are erased past a lower limit for erased non-volatile memory cells and identifying a second set of the bit lines that are connected to non-volatile memory cells of the group that are not erased past the lower limit for erased non-volatile memory cells, and applying programming to non-volatile memory cells connected to the first set of bit lines while inhibiting programming for non-volatile memory cells connected to the second set of bit lines.
    Type: Application
    Filed: August 5, 2022
    Publication date: February 8, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Yi Song, Yanjie Wang, Jiahui Yuan
  • Publication number: 20240047000
    Abstract: An erase process for a group of non-volatile memory cells comprises applying doses of erasing to the group and performing erase verify between pairs of successive doses of erasing. The time needed to complete the erase process can be reduced by optimizing the order of performing erase verify. For example, erase verify can be performed by separately performing erase verify for multiple portions of the group in order from previously determined slowest erasing portion of the group to previously determined fastest erasing portion of the group, and aborting the performing of erase verify prior to completion of erase verify for all of the portions of the group in response to a number erase errors exceeding a limit.
    Type: Application
    Filed: July 26, 2022
    Publication date: February 8, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Yi Song, Lito De La Rama, Xiaochen Zhu
  • Patent number: 11894071
    Abstract: A system has been described that performs differential temperature compensation based on a differential between the temperature at time of programming and temperature at time of reading for a set of data. Differential temperature compensation is useful for bulk programming/reading (e.g., many pages of data) and/or programming/reading super pages of data (multiple pages residing on different memory die).
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: February 6, 2024
    Assignee: SanDisk Technologies LLC
    Inventors: Yi Song, Dengtao Zhao, Sarath Puthenthermadam, Jiahui Yuan
  • Publication number: 20240038315
    Abstract: An apparatus is provided that includes a block including a word line coupled to a plurality of memory cells, and a control circuit coupled to the word line. The control circuit is configured to program the plurality of memory cells by applying program pulses to the word line in a plurality of program loops, determining a first count of a number of the program loops used to complete programming a first subset of the plurality of memory cells to a first programmed state, first comparing the first count to a corresponding first lower limit and a corresponding first upper limit, and determining whether programming the plurality of memory cells has failed based on a result of the first comparing step.
    Type: Application
    Filed: July 26, 2022
    Publication date: February 1, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Yi Song, Sarath Puthenthermadam, Jiahui Yuan
  • Patent number: 11887674
    Abstract: A memory apparatus and method of operation is provided. The apparatus includes memory cells each connected to one of a plurality of word lines. The memory cells are disposed in strings coupled to one of a plurality of bit lines and are configured to retain a threshold voltage corresponding to one of a plurality of data states. A control means is configured to read each of the memory cells in a read operation. For each one of the memory cells, the control means is also configured to offset at least one of a bit line settling time and a kick voltage during the read operation based on a probability of at least one neighboring one of the plurality of bit lines being coupled to the memory cells retaining the threshold voltage corresponding to a different one of the plurality of data states than the one of the memory cells.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: January 30, 2024
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Yanjie Wang, Guirong Liang, Xiaoyu Che, Yi Song
  • Publication number: 20240029804
    Abstract: An apparatus is provided that includes a block of memory cells and a control circuit coupled to the block of memory cells. The control circuit is configured to perform an erase operation on the block of memory cells by determining a first count of a number of times that the block of memory cells previously has been programmed and erased, determining a threshold number based on the first count, and determining whether the erase operation passed or failed based on the threshold number.
    Type: Application
    Filed: July 20, 2022
    Publication date: January 25, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Yi Song, Xiaochen Zhu, Jiahui Yuan, Lito De La Rama
  • Patent number: 11876136
    Abstract: Embodiments of the invention are directed to a semiconductor device structure that includes a first channel region over a substrate, a second channel region over the first channel region, and a merged source or drain (S/D) region over the substrate and adjacent to the first channel region and the second channel region. The merged S/D region is communicatively coupled to the first channel region and the second channel region. A wrap-around S/D contact is configured such that it is on a top surface, sidewalls, and a bottom surface of the merged S/D region.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: January 16, 2024
    Assignee: International Business Machine Corporation
    Inventors: Yi Song, Praveen Joseph, Andrew Greene, Kangguo Cheng
  • Publication number: 20240006002
    Abstract: To remedy short term data retention issues, a system creates a gate to channel voltage differential for non-volatile memory cells between programming and verifying in order to accelerate the effects of the short term data retention issue. That is, the gate to channel voltage differential will accelerate the migrating of electrons out of shallow traps. In some embodiments, the gate to channel voltage differential comprises a higher voltage at the channel in comparison to the gate. In some embodiments, the programming comprises applying doses of a programming signal and the gate to channel voltage differential is only created for a subset of the time periods between doses of the programming signal.
    Type: Application
    Filed: June 29, 2022
    Publication date: January 4, 2024
    Applicant: SanDisk Technologies LLC
    Inventors: Yi Song, Jiacen Guo, Jiahui Yuan
  • Publication number: 20230410906
    Abstract: An apparatus includes a control circuit configured to connect to memory cells connected in series in NAND strings. Each NAND string includes a plurality of data memory cells coupled to a plurality of data word lines in series with a plurality of dummy memory cells connected to a plurality of dummy word lines. The control circuit configured to apply a first dummy word line voltage to one or more dummy word lines of the plurality of dummy word lines in a verify step of a program operation to program data memory cells. The control circuit is configured to apply a second dummy word line voltage to the one or more dummy word lines in a read operation to read the data memory cells.
    Type: Application
    Filed: May 25, 2022
    Publication date: December 21, 2023
    Applicant: SanDisk Technologies LLC
    Inventors: Yi Song, Jiahui Yuan, Xiang Yang
  • Publication number: 20230395157
    Abstract: In order to achieve tight and uniform erased threshold voltage distributions in a non-volatile memory system that includes non-volatile memory cells arranged in blocks that have multiple sub-blocks and has an erase process using gate induced drain leakage (GIDL) to generate charge carriers that change threshold voltage of the memory cells, the magnitude of the GIDL is adjusted separately for the sub-blocks.
    Type: Application
    Filed: June 3, 2022
    Publication date: December 7, 2023
    Applicant: SanDisk Technologies LLC
    Inventors: Yi Song, Jiahui Yuan, Yanjie Wang
  • Patent number: 11832201
    Abstract: Described herein is a system with a first network element and a second network element. The first network element contains a processor configured to synchronize with the second network element; and maintain synchronization with the second network element. The first network element is a small cell eNB and the second network element is one of the following: a macro cell enhanced node-B (eNB); or a small cell eNB.
    Type: Grant
    Filed: June 13, 2022
    Date of Patent: November 28, 2023
    Assignee: MALIKIE INNOVATIONS LIMITED
    Inventors: Hua Xu, Shiwei Gao, Yajun Zhu, Zhijun Cai, Chandra Sekhar Bontu, Yi Song
  • Publication number: 20230368846
    Abstract: Technology is disclosed herein for a memory system that compensates for different programming speeds in two sets of memory cells when reading those two sets of memory cells. The memory system programs a group of the memory cells to one or more data states. In one aspect, the memory cells are not verified during programming. The group has a first set of memory cells that program at a first speed and a second set of memory cells that program at a second speed. The memory system reads the first set of the memory cells with a first set of read parameters and reads the second set of the memory cells with a second set of read parameters. The first set of read parameters are different from the second set of read parameters to compensate for the different programming speeds.
    Type: Application
    Filed: May 10, 2022
    Publication date: November 16, 2023
    Applicant: SanDisk Technologies LLC
    Inventors: Jiacen Guo, Xiaochen Zhu, Xiang Yang, Lito De La Rama, Yi Song, Jiahui Yuan
  • Publication number: 20230348311
    Abstract: A method of performing 3D printing of a silicon component includes adding powdered silicon to a 3D printing tool. For each the powdered silicon, forming a layer of the powder bed to a pre-determined thickness, directing a high-powered beam in a pre-determined pattern into the powder-bed to melt the powdered silicon. After no further layers are needed, the silicon component is cooled at a pre-determined temperature ramp-down rate. In a fully dense printing method, buffer layers of silicon are initially printed on a steel substrate, and then layers of silicon for the actual component are printed on top of the buffer layers using a double printing method. In a fully dense and crack free printing method, one or more heaters and thermal insulation are used to minimize temperature gradient during Si printing, in-situ annealing, and cooling.
    Type: Application
    Filed: April 26, 2021
    Publication date: November 2, 2023
    Inventors: Seyedalireza TORBATISARRAF, Abhinav Shekhar RAO, Jihong CHEN, Yi SONG, Jerome HUBACEK, Vijay NITHIANANTHAN
  • Patent number: 11791001
    Abstract: A memory system reads data from non-volatile memory cells using a set of read compare voltages to determine which data state the memory cells are in, where each data state is associated with predetermined data values. The read compare voltages are determined dynamically based on a difference between memory cell current at time of programming and memory cell current at time of reading.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: October 17, 2023
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Yi Song, Jiahui Yuan, Dengtao Zhao
  • Publication number: 20230319272
    Abstract: This application provides encoding and decoding methods and apparatuses for an enhancement layer. The encoding method includes: an encoder obtains a reconstructed block of a base layer of a to-be-encoded picture block; calculates a difference between corresponding pixels in the to-be-encoded picture block and the reconstructed block of the base layer to obtain a residual block of an enhancement layer of the to-be-encoded picture block; determines a transform-block partitioning manner of the residual block of the enhancement layer; and performs transformation on the residual block of the enhancement layer based on the transform-block partitioning manner. This application can simplify a processing procedure for the encoder and improve encoding efficiency of the encoder. In addition, compression efficiency of the residual block can be improved more effectively by using an adaptive TU partitioning method.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Inventors: Yi SONG, Peiyun DI, Shaolin CHEN, Yixuan ZHANG