Shenzhen Dapu Microelectronics Assigned Three Patents

Binding storage device and host, and verifying storage device and host
Shenzhen Dapu Microelectronics Co., Ltd., Shenzhen, China, has been assigned a patent (11,199,981) developed by Shang, Ning, and Yang, Yafei, Shenzhen, China, for “method and system for binding storage device and host, and method and system for verifying storage device and host.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A method and system for binding and verifying between a storage device and hosts are provided. The method includes: sharing system parameters in advance with the hosts by the storage device, where the hosts are to be bound to the storage device, using a programmable read-only memory as the storage device, dividing the programmable read-only memory into m regions, completing the binding between each region and one corresponding host to be bound using the pre-shared system parameters, where m is a positive integer, verifying an identity of a bound host in accordance with the pre-shared system parameters through a zero-knowledge proof method by the storage device, if the verification is successful, starting the storage device and serving the bound host, if the verification is unsuccessful, terminating the starting of the storage device and refusing to serve the bound host.”

The patent application was filed on October 31, 2019 (16/669,519).

SSD control and learning-based SSD data access
Shenzhen Dapu Microelectronics Co., Ltd., Shenzhen, China, has been assigned a patent (11,119,694) developed by Yang, Jing, He, Haibo, and Yang, Qing, Shenzhen, China, for “solid-state drive control device and learning-based solid-state drive data access method.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The invention discloses a solid-state drive control device and a learning-based solid-state drive data access method, wherein the method comprises the steps of: presetting a hash table, the hash table comprising more than one hash value, the hash value is used to record and represent data characteristics of data pages in the solid-state drive. Obtaining an I/O data stream of the solid-state drive, and obtaining a hash value corresponding to the I/O data stream in the hash table. Predicting a sequence of data pages and/or data pages that are about to be accessed by a preset first learning model. Prefetching data is performed in the solid-state drive based on an output result of the first learning model. Through the embodiment of the present invention, when predicting prefetched data, learning can be performed in real time to adapt to different application categories and access modes through adaptive adjustment parameters, so that better data prefetching performance can be obtained.”

The patent application was filed on January 17, 2019 (16/249,897).

Solid-state hard disk and data access for use with solid-state hard disk
Shenzhen Dapu Microelectronics Co., Ltd., Shenzhen, China, has been assigned a patent (10,810,127) developed by He, Haibo, and Yang, Qing, Shenzhen, China, for “solid-state hard disk and data access method for use with solid-state hard disk.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Solid-state drives (SSD) and a data access method for SSD are provided. The method includes the following. Cache acquired data-to-be-written to a preset write cache module. Rank the data-to-be-written in the write cache module according to a least recently used page (LRU) algorithm. When data storage amount of the write cache module reaches a preset value, determine a preset number of replacement data among the infrequently used data-to-be-written according to a preset cache replacement algorithm. Write the replacement data into a flash memory of the SSD. Implementations of the present disclosure can decrease effectively the number of times of rewriting on a flash memory of the SSD, thereby reducing effectively a write amplifying problem of the SSD during data access.”

The patent application was filed on January 18, 2019 (16/251,251).