Patents Assigned to SanDisk Technologies Inc.
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Publication number: 20250010293Abstract: Methods of detecting molecules using an apparatus comprising a plurality of magnetic sensors are disclosed. A method may include binding a first molecule to a proximal wall of a fluid chamber of the apparatus, and adding, to the fluid chamber, a magnetically-labeled molecule comprising a cleavable magnetic label, wherein the magnetically-labeled molecule is configured to bind to or be incorporated by the first molecule. The method may use at least one address line and at least one selector element of the apparatus to detect a characteristic of at least a portion of the plurality of magnetic sensors, wherein the characteristic indicates whether the magnetically-labeled molecule has bound to or been incorporated by the first molecule.Type: ApplicationFiled: September 18, 2024Publication date: January 9, 2025Applicants: Roche Sequencing Solutions, Inc., Sandisk Technologies, Inc.Inventors: Yann ASTIER, Patrick BRAGANCA, Juraj TOPOLANCIK
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Patent number: 12189451Abstract: The present disclosure generally relates to split, non-operational power states for a data storage device. The data storage device can transition between the split, non-operational power states without advertising the transition to the host device. The power state parameters that are advertised to the host device are adjusted such that the host device is guided to the correct power decision based on the advertised power and duration. By splitting the non-operational power states, the data storage device does not incur additional transitional energy costs for short idle durations.Type: GrantFiled: May 25, 2023Date of Patent: January 7, 2025Assignee: Sandisk Technologies, Inc.Inventors: Dmitry Vaysman, Eran Erez, Judah Gamliel Hahn, Sartaj Ajrawat
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Patent number: 12189818Abstract: A data storage device and method for token generation and parameter anonymization are provided. In one embodiment, a data storage device is provided comprising a memory and a controller. The controller is configured to receive a plurality of tokens and data comprising a plurality of data portions, which each token identifies a different set of the data portions to anonymize; create a plurality of anonymized versions of the data per the plurality of tokens; and store each of the plurality of anonymized versions of the data in different physical addresses in the memory, wherein the different physical addresses map to a same logical address in a mapping structure. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.Type: GrantFiled: May 4, 2022Date of Patent: January 7, 2025Assignee: Sandisk Technologies, Inc.Inventor: Ramanathan Muthiah
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Patent number: 12193166Abstract: In one example, the present application describes a Printed Circuit Board (PCB) that mitigates galvanic corrosion during an Organic Solderability Preservative (OSP) process used during fabrication of the PCB. The PCB includes a first metal pattern and a second metal pattern electrically coupled to each other, where the first and second metal patterns are different metals. The first metal pattern has a first area that is exposed by a solder mask layer, and the second metal pattern has a second area that is exposed by the solder mask area. A ratio of the first area to the second area is less than a threshold ratio to mitigate the galvanic corrosion of the second metal pattern exposed on the PCB during the OSP process.Type: GrantFiled: April 13, 2022Date of Patent: January 7, 2025Assignee: Sandisk Technologies, Inc.Inventors: Songtao Lu, Hsiang Ju Huang, Binbin Zheng, Cheng-Hsiung Yang, Chien-Te Chen
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Publication number: 20250004660Abstract: A process for reliably erasing data from a solid-state drive (SSD) includes first, prior to user data being stored on the drive, generating a restore image of information stored on the drive which characterizes a restore state of the drive, such as a factory image. Then, imparting energy to the drive to promote electrons representing bits in corresponding memory cells to exit the cells, such as imparting thermal energy or high-energy electromagnetic radiation to the drive. Also, generating a set of quantitative data for verifying erasure of the data for presentation to the user helps ensure trust in the data wipe process. The drive may also be electrically erased prior to imparting energy to the SSD, to provide another level of confidence in the data wipe process. The restore image may then be loaded to the necessary locations on the wiped drive to restore drive functionality.Type: ApplicationFiled: August 3, 2023Publication date: January 2, 2025Applicant: Sandisk Technologies, Inc.Inventors: Daniel J. Linnen, Ramanathan Muthiah, Preston Thomson, Kirubakaran Periyannan, Niles Nian Yang, Inez Hua, Judah Gamliel Hahn
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Patent number: 12182439Abstract: A data storage device includes a memory device and a controller to the memory device. The controller is configured to receive key value (KV) pair data having a key and a value from a host device and generate a mapping in a key-to-physical (K2P) table corresponding to the received KV pair data. The mapping includes a first slot for storing a physical address corresponding to the value and a second slot for storing a physical address corresponding to metadata associated with the KV pair data. When the associated metadata is sent to the data storage device, which may be non-concurrent to transferring the KV pair data, the mapping of the associated metadata is linked to a same key as the mapping of the KV pair data. Thus, using the mapping, the key of the KV pair data is associated with the KV pair data and the associated metadata.Type: GrantFiled: September 6, 2022Date of Patent: December 31, 2024Assignee: Sandisk Technologies, Inc.Inventor: Ramanathan Muthiah
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Patent number: 12182454Abstract: A data storage device includes a memory device and a controller coupled to the memory device. The controller is configured to maintain a plurality of virtual pools, wherein each virtual pool corresponds with an logical block address (LBA) range, update a counter of a virtual pool, wherein the counter corresponds to a health of the LBA range, and select, based on the counter, the virtual pool to program data to. The controller is further configured to maintain a counter for each application having data programmed to the virtual pool, where the counter is increased for each write operation to the virtual pool. When the counter equals or exceeds a threshold value, the controller is configured to send a warning to each application associated with the virtual pool having the counter that equals or exceeds the threshold value.Type: GrantFiled: March 20, 2023Date of Patent: December 31, 2024Assignee: Sandisk Technologies, Inc.Inventors: Rotem Sela, Asher Druck
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Patent number: 12182430Abstract: Certain aspects of the present disclosure provide techniques for proving possession of data in a storage device participating in a distributed data storage network. An example storage device includes a storage circuitry and a trusted circuit. The storage circuitry is configured to store a plurality of data blocks. The trusted circuit generally has a private signing key securely stored thereon. The trusted circuit is generally configured to compute a hash over data stored in a plurality of data blocks and to generate an anonymous digital signature for the data stored in the plurality of data blocks based at least in part on the private signing key and the computed hash. The trusted circuit may be interposed on a write path to the storage circuitry such that data written to the storage circuitry is processed through the trusted circuit.Type: GrantFiled: November 29, 2021Date of Patent: December 31, 2024Assignee: Sandisk Technologies, Inc.Inventors: Shashank Agrawal, Cyril Guyot
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Patent number: 12182451Abstract: The present disclosure generally relates to improved fragment processing while command fetching is on-going. Rather than stopping command fetching, the controller uses a short fragment list, while command fetching can continue, to add a fragment. The controller first adds new fragments to the short list with the fragment information. The information is then checked for size. If the fragment information is smaller than the short fragment list, then the fragment list is updated during command fetching. As a command arrives, the controller does a binary search of a sorted fragment list. The results are stored and later scanned by the controller for matches with the short fragment list. If there are no matches in the short list, then the controller uses the stored results to update the search result. If there is a match in the short list then the controller uses the new results to update the search list.Type: GrantFiled: July 19, 2023Date of Patent: December 31, 2024Assignee: Sandisk Technologies, Inc.Inventors: Amir Segev, Shay Benisty
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Patent number: 12183386Abstract: The present disclosure generally relates to aligning non-aligned data for more efficient data reading. Data for write commands does not always perfectly align, yet the data is written in order of write command receipt. In such cases, aligned chunks of data may be split into two word lines (WLs) due to the presence of previously received smaller chunks of data. Rather than writing the data in order, the smaller chunks of data, which are non-aligned, are held in a buffer and written later to ensure that any aligned chunks of data remain aligned when written to the memory device. Once sufficient smaller chunks or data have accumulated to be aligned, or upon a need to write the smaller chunks upon reaching a threshold, the smaller chunks are written together in a single WL so as to not cause non-alignment of aligned data.Type: GrantFiled: September 6, 2022Date of Patent: December 31, 2024Assignee: Sandisk Technologies, Inc.Inventors: Alexander Bazarsky, Judah Gamliel Hahn, Michael Ionin
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Patent number: 12181961Abstract: Apparatus, media, methods, and systems for data storage systems and methods for autonomously adapting data storage system performance, lifetime, capacity and/or operational requirements. A data storage system may comprise a controller and one or more non-volatile memory devices. The controller is configured to determine a category for a workload of one or more operations being processed by the data storage system using a machine-learned model. The controller is configured to determine an expected degradation of the one or more non-volatile memory devices. The controller is configured to adjust, based on the expected degradation and an actual usage of physical storage of the data storage system by a host system, an amount of physical storage of the data storage system available to the host system.Type: GrantFiled: October 4, 2022Date of Patent: December 31, 2024Assignee: Sandisk Technologies, Inc.Inventors: Jay Sarkar, Cory Peterson
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Patent number: 12184307Abstract: The present disclosure generally relates to improving data transfer in a data storage device. In double data rate (DDR) systems that include a data bus inversion (DBI) functionality, bit flip events can be more prevalent. To mitigate the effect of enhanced erroneous bit flip rate related to DBI bit flip events, the DBI bit can stay static for a predetermined number of consecutive clock cycles, the error correction module can be informed of reduced reliability due to active DBI bit events, the DBI bit can be set to 0, or combinations thereof. Setting the DBI bit to 0 effectively cancels DBI functionality. Informing the error correction module permits a more robust error correction to occur. Forcing the DBI bit to remain static reduces the probability of an unrecognized bit flip event of a full byte. In so doing, data transfer reliability is improved when using DBI functionality.Type: GrantFiled: December 29, 2021Date of Patent: December 31, 2024Assignee: Sandisk Technologies, Inc.Inventors: Shay Benisty, Judah Gamliel Hahn, Ariel Navon
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Publication number: 20240427521Abstract: A data storage device includes a memory device and a controller coupled to the memory device. The controller includes a decoder multiplexer (mux) module, a plurality of request/response channels coupled to the decoder mux module, an arithmetic pipeline module coupled to the plurality of request/response channels, an arbiter module coupled to the plurality of request/response channels and the arithmetic pipeline module, a mux/arbiter module coupled to the arithmetic pipeline module, a random access memory (RAM) access module coupled to the decoder mux module and the mux/arbiter module, and a RAM coupled to the mux/arbiter module. The controller is configured to determine a pipeline depth value and a calculation parallelism value of the arithmetic pipeline module and configure the arithmetic pipeline module based on the determining.Type: ApplicationFiled: September 3, 2024Publication date: December 26, 2024Applicant: Sandisk Technologies, Inc.Inventors: Yuri RYABININ, Shay BENISTY
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Publication number: 20240427407Abstract: The present disclosure generally relates to ensuring a data storage device consumes as little power as possible. Different HW modules in the data storage device can operate at different frequencies to ensure any bottleneck HW modules operate at as fast a frequency as possible, while non-bottleneck HW modules operate at slower frequencies and hence, consume less power. The frequency for each HW modules is dynamic and is adjusted based upon detected bottlenecks so that the data storage device can operate as efficiently as possible and consume as little power as possible.Type: ApplicationFiled: September 3, 2024Publication date: December 26, 2024Applicant: Sandisk Technologies, Inc.Inventor: Refael BEN-RUBI
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Patent number: 12175119Abstract: A storage system includes one or more data storage devices, a PCIe switch coupled to the one or more data storage devices, and a controller unit coupled to the PCIe switch. The one or more data storage devices are DRAM-less. The controller unit includes a dynamic random access memory (DRAM) host memory buffer (HMB) controller and a DRAM pool or a controller memory buffer (CMB) controller, a root complex/port, and the DRAM pool. The DRAM pool includes one or more DRAM devices. The one or more data storage devices are configured to interact with the controller unit and store data to a DRAM of the DRAM pool of the controller unit.Type: GrantFiled: April 29, 2022Date of Patent: December 24, 2024Assignee: Sandisk Technologies, Inc.Inventors: Judah Gamliel Hahn, Avichay Haim Hodes, Shay Benisty, Michael James
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Patent number: 12175281Abstract: A data storage device includes a memory device and a controller coupled to the memory device. The controller is configured to issue an unaligned transaction, determine that there is a transfer failure indication for the unaligned transaction, and retry the unaligned transaction with either a different alignment or a different transfer size. The different alignment or the different transfer size is used for another unaligned transaction from a same address range upon successful retry of the unaligned transaction.Type: GrantFiled: January 5, 2022Date of Patent: December 24, 2024Assignee: Sandisk Technologies, Inc.Inventors: Shay Benisty, Judah Gamliel Hahn
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Patent number: 12175114Abstract: Adding a bypass module and a pattern detector module to a data path of a controller will increase the efficiency of both sanitize block erase audit and sanitize crypto erase audit operations. The sanitize crypto erase audit skips an end to end (E2E) protection module to provide decrypted data to a static random access memory (SRAM) buffer and ultimately a host device through a direct memory access (DMA) module. The sanitize block erase audit utilizes the pattern detector module to provide a known pattern to the SRAM buffer and host through the DMA module. The bypass module and pattern detector module feed into a multiplexer (Mux) prior to the SRAM buffer.Type: GrantFiled: July 17, 2023Date of Patent: December 24, 2024Assignee: Sandisk Technologies, Inc.Inventors: Amir Segev, Judah Gamliel Hahn
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Patent number: 12175752Abstract: Systems, methods, and data storage devices for improved classifier training using a video object tracker to determine video data samples are described. A group classifier may be trained using machine learning to classify image objects, based on a set of machine learning parameters, and assign them a group identifier. A retraining data set may be determined based on video data that was assigned that group identifier based on an object tracker. The group classifier may be retrained using the retraining data set to determine an updated set of machine learning parameters and the group classifier may be updated with those parameters.Type: GrantFiled: April 26, 2022Date of Patent: December 24, 2024Assignee: Sandisk Technologies, Inc.Inventor: Shaomin Xiong
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Patent number: 12174736Abstract: A controller maintains logical block address (LBA) to physical block address (PBA) mappings as mSets in a storage address table (SAT). Because the SAT may include many mappings, and, consequently, have a large size, the SAT may be stored in a distanced memory from the controller, such as a non-volatile memory device of the data storage device or a host memory buffer of a host device that is coupled to the data storage device. In order to optimize performance, a portion of the SAT may be stored as a compressed address table (CAT) in an internal memory of the controller or another volatile memory of the data storage device. During operation, the controller maintains an active range of mSets in the CAT by adding mSets to the CAT based on whether the LBA is sequential to the active range and a hit count of the active range.Type: GrantFiled: July 6, 2023Date of Patent: December 24, 2024Assignee: Sandisk Technologies, Inc.Inventors: Nava Singer, Jonathan Journo
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Patent number: 12175751Abstract: Systems, methods, and data storage devices using a video group classifier based on an object tracker are described. A group classifier may be trained using machine learning to classify image objects from a video frame and assign a classifier identifier. An object tracker and the group classifier may be used to determine correspondence between tracker identifiers and classifier identifiers for assigning group identifiers. The object tracker may then be used to determine image objects, assign tracker identifiers, and track the movement of those image objects through a video data stream to associate tracker identifiers with the video frames. The tracker identifier may be used to assign a group identifier to each video frame based the correspondence between the tracker identifier and the classifier identifier.Type: GrantFiled: April 26, 2022Date of Patent: December 24, 2024Assignee: Sandisk Technologies, Inc.Inventors: Shaomin Xiong, Toshiki Hirano
