Patents by Inventor Daniel Linnen

Daniel Linnen 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: 20210280559
    Abstract: A fractured semiconductor die is disclosed, together with a semiconductor device including the fractured semiconductor die. During fabrication of the semiconductor dies in a wafer, the wafer may be scored in a series of parallel scribe lines through portions of each row of semiconductor dies. The scribe lines then propagate through the full thickness of the wafer to fracture off a portion of each of the semiconductor dies. It may happen that electrical traces such as bit lines in the memory cell arrays short together during the die fracture process. These electrical shorts may be cleared by running a current through each of the electrical traces.
    Type: Application
    Filed: March 3, 2020
    Publication date: September 9, 2021
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Daniel Linnen, Kirubakaran Periyannan, Jayavel Pachamuthu, Narendhiran CR, Jay Dholakia, Everett Lyons, IV, Hoang Huynh, Dat Dinh
  • Publication number: 20210267083
    Abstract: In one embodiment, an apparatus is provided. The apparatus includes a printed circuit board. The apparatus also includes a first connector coupled to the printed circuit board. The first connector is configured to couple the apparatus to a computing device. The apparatus further includes a second connector coupled to the printed circuit board. The second connector is configured to couple the apparatus to a data storage device. The apparatus further includes a securement mechanism comprising a first portion and a second portion. The securement mechanism is movable about the apparatus between a first position and a second position. The first portion is configured to maintain the securement mechanism at the first position. The second portion is configured to secure the data storage device to the apparatus when the securement mechanism is in the first position.
    Type: Application
    Filed: February 24, 2020
    Publication date: August 26, 2021
    Inventors: Everett LYONS, Daniel LINNEN, Randy GILLESPIE
  • Publication number: 20210191796
    Abstract: A memory controller includes, in one embodiment, a memory interface and a dynamic stripe length manager circuit configured to receive a first weighted health factor associated with a first memory block of the memory, determine a first collective stripe length of the first memory block based on the first weighted health factor, set a first number of zones in the first memory block based on the first collective stripe length, monitor the memory to detect a trigger event that triggers a calculation of a second collective stripe length of the first memory block, the second collective stripe length being larger than the first collective stripe length, receive a second weighted health factor associated with the first memory block, determine the second collective stripe length based on the second weighted health factor, and set a second number of zones in the first memory block based on the second collective stripe length.
    Type: Application
    Filed: December 20, 2019
    Publication date: June 24, 2021
    Inventors: Abhijit Rao, Ramanathan Muthiah, Judah Gamliel Hahn, Gautam Ashok Dusija, Daniel Linnen
  • Patent number: 11042432
    Abstract: A memory controller includes, in one embodiment, a memory interface and a dynamic stripe length manager circuit configured to receive a first weighted health factor associated with a first memory block of the memory, determine a first collective stripe length of the first memory block based on the first weighted health factor, set a first number of zones in the first memory block based on the first collective stripe length, monitor the memory to detect a trigger event that triggers a calculation of a second collective stripe length of the first memory block, the second collective stripe length being larger than the first collective stripe length, receive a second weighted health factor associated with the first memory block, determine the second collective stripe length based on the second weighted health factor, and set a second number of zones in the first memory block based on the second collective stripe length.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: June 22, 2021
    Assignee: Western Digital Technologies, Inc.
    Inventors: Abhijit Rao, Ramanathan Muthiah, Judah Gamliel Hahn, Gautam Ashok Dusija, Daniel Linnen
  • Publication number: 20210149800
    Abstract: A system and method for a power-cycle based read scrub of a memory device is provided. A controller stores an access counter which indicates a number of times a logical block address (LBA) has been accessed. When the LBA is accessed, the LBA counter is incremented. If the LBA counter indicates a count higher than a predetermined count, data stored in the LBA is duplicated and the duplicate data is stored as backup data. Subsequent access of the LBA will show that the LBA count is higher than the predetermined count, so the backup data will be accessed rather than the original LBA, thus preventing read-induced failure of the data which may be caused by further repeated access of the same LBA.
    Type: Application
    Filed: November 20, 2019
    Publication date: May 20, 2021
    Applicant: Western Digital Technologies, Inc.
    Inventors: Niles Yang, Lior Avital, Mrinal Kochar, Daniel Linnen, Rohit Sehgal
  • Patent number: 11003551
    Abstract: A non-volatile storage apparatus receives first data from an entity external to the non-volatile storage apparatus, combines the first data with other data being stored in the non-volatile storage apparatus to create combined data, performs a programming process to program the first data into a first location, determines that the programming process failed, intentionally corrupts the first data programmed into the first location, recovers the first data from the combined data, and reprograms the recovered first into a second location.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: May 11, 2021
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Daniel Linnen, Ashish Ghai, Khanfer Kukkady
  • Patent number: 10991447
    Abstract: A method for detecting faults in a memory system includes performing an operation on at least one memory cell of the memory system. The method also includes receiving, during performance of the operation, a first clock cycle count for a first pulse of a charge pump associated with the at least one memory cell. The method also includes receiving, during performance of the operation, a second clock cycle count for a second pulse of the charge pump. The method also includes determining whether a fault will occur based on a difference between the first clock cycle count and the second clock cycle count.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: April 27, 2021
    Assignee: SanDisk Technologies LLC
    Inventors: Daniel Linnen, Avinash Rajagiri, Dongxiang Liao, Kirubakaran Periyannan
  • Patent number: 10943662
    Abstract: An apparatus includes non-volatile memory and a control circuit configured to program the non-volatile memory. The control circuit is configured to change a programming order. In one aspect, the control circuit changes the order in which word lines are programmed from one point in time to another. In one aspect, the control circuit uses one order for programming one set of word lines and a different order for a different set of word lines. The sets of word lines could be in different sub-blocks, memory blocks, or memory dies. Such programming order differences can improve performance of error recovery.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 9, 2021
    Assignee: Western Digital Technologies, Inc.
    Inventors: Daniel Linnen, Jayavel Pachamuthu, Kirubakaran Periyannan
  • Patent number: 10886002
    Abstract: A method for detecting defects in a memory system includes receiving a command to perform a standard erase operation on at least one memory cell of the memory system. The method also includes performing a first defect detection operation on the at least one memory cell. The method also includes setting, in response to the first defect detection operation detecting a defect, a defect status indicator. The method also includes performing the standard erase operation on the at least one memory cell. The method also includes performing a second defect detection operation on the at least one memory cell. The method also includes setting, in response to the second defect detection operation detecting a defect, the defect status indicator.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: January 5, 2021
    Assignee: SanDisk Technologies LLC
    Inventors: Daniel Linnen, Avinash Rajagiri, Yuvaraj Krishnamoorthy, Srikar Peesari, Ashish Ghai, Dongxiang Liao
  • Patent number: 10776277
    Abstract: A partial memory die comprises a memory structure that includes a first plane of non-volatile memory cells and a second plane of non-volatile memory cells. The second plane of non-volatile memory cells is incomplete. A first buffer is connected to the first plane. A second buffer is connected to the second plane. A data path circuit is connected to an input interface, the first buffer and the second buffer. The data path circuit is configured to map data received at the input interface and route the mapped data to either the first buffer or the second buffer. An inter-plane re-mapping circuit is connected to the first buffer and the second buffer, and is configured to re-map data from the first buffer and store the re-mapped data in the second buffer for programming into the second plane.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: September 15, 2020
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Daniel Linnen, Srikar Peesari, Kirubakaran Periyannan, Avinash Rajagiri, Shantanu Gupta, Jagdish Sabde, Ashish Ghai, Deepak Bharadwaj
  • Publication number: 20200104219
    Abstract: A non-volatile storage apparatus receives first data from an entity external to the non-volatile storage apparatus, combines the first data with other data being stored in the non-volatile storage apparatus to create combined data, performs a programming process to program the first data into a first location, determines that the programming process failed, intentionally corrupts the first data programmed into the first location, recovers the first data from the combined data, and reprograms the recovered first into a second location.
    Type: Application
    Filed: March 22, 2019
    Publication date: April 2, 2020
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Daniel Linnen, Ashish Ghai, Khanfer Kukkady
  • Patent number: 10290354
    Abstract: A partial memory die is missing one or more components. One example of a partial memory die includes an incomplete memory structure such that the partial memory die is configured to successfully perform programming, erasing and reading of the incomplete memory structure.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: May 14, 2019
    Assignee: SanDisk Technologies LLC
    Inventors: Daniel Linnen, Srikar Peesari, Kirubakaran Periyannan, Avinash Rajagiri, Shantanu Gupta, Jagdish Sabde, Ashish Ghai, Deepak Bharadwaj, Sukhminder Singh Lobana, Shrikar Bhagath
  • Publication number: 20190129861
    Abstract: A partial memory die comprises a memory structure that includes a first plane of non-volatile memory cells and a second plane of non-volatile memory cells. The second plane of non-volatile memory cells is incomplete. A first buffer is connected to the first plane. A second buffer is connected to the second plane. A data path circuit is connected to an input interface, the first buffer and the second buffer. The data path circuit is configured to map data received at the input interface and route the mapped data to either the first buffer or the second buffer. An inter-plane re-mapping circuit is connected to the first buffer and the second buffer, and is configured to re-map data from the first buffer and store the re-mapped data in the second buffer for programming into the second plane.
    Type: Application
    Filed: October 31, 2017
    Publication date: May 2, 2019
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Daniel Linnen, Srikar Peesari, Kirubakaran Periyannan, Avinash Rajagiri, Shantanu Gupta, Jagdish Sabde, Ashish Ghai, Deepak Bharadwaj
  • Publication number: 20190130978
    Abstract: A partial memory die is missing one or more components. One example of a partial memory die includes an incomplete memory structure such that the partial memory die is configured to successfully perform programming, erasing and reading of the incomplete memory structure.
    Type: Application
    Filed: October 31, 2017
    Publication date: May 2, 2019
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Daniel Linnen, Srikar Peesari, Kirubakaran Periyannan, Avinash Rajagiri, Shantanu Gupta, Jagdish Sabde, Ashish Ghai, Deepak Bharadwaj, Sukhminder Singh Lobana, Shrikar Bhagath
  • Patent number: 10242750
    Abstract: Techniques are presented for testing the high-speed data path between the IO pads and the read/write buffer of a memory circuit without the use of an external test device. In an on-chip process, a data test pattern is transferred at a high data rate between the read/write register and a source for the test pattern, such as register for this purpose or the read/write buffer of another plane. The test data after the high-speed transfer is then checked against its expected, uncorrupted value, such as by transferring it back at a lower speed for comparison or by transferring the test data a second time, but at a lower rate, and comparing the high transfer rate copy with the lower transfer rate copy at the receiving end of the transfers.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: March 26, 2019
    Assignee: SanDisk Technologies LLC
    Inventors: Daniel Linnen, Srikar Peesari, Kirubakaran Periyannan, Shantanu Gupta, Avinash Rajagiri, Dongxiang Liao, Jagdish Sabde, Rajan Paudel
  • Publication number: 20180350445
    Abstract: Techniques are presented for testing the high-speed data path between the IO pads and the read/write buffer of a memory circuit without the use of an external test device. In an on-chip process, a data test pattern is transferred at a high data rate between the read/write register and a source for the test pattern, such as register for this purpose or the read/write buffer of another plane. The test data after the high-speed transfer is then checked against its expected, uncorrupted value, such as by transferring it back at a lower speed for comparison or by transferring the test data a second time, but at a lower rate, and comparing the high transfer rate copy with the lower transfer rate copy at the receiving end of the transfers.
    Type: Application
    Filed: May 31, 2017
    Publication date: December 6, 2018
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Daniel Linnen, Srikar Peesari, Kirubakaran Periyannan, Shantanu Gupta, Avinash Rajagiri, Dongxiang Liao, Jagdish Sabde, Rajan Paudel