Phison Electronics has filed a patent for a memory management method for rewritable non-volatile memory modules. The method involves grouping physical erasing units into management units, with each unit containing a smaller number of physical erasing units than the total number in the memory module. This method aims to improve memory management efficiency. GlobalData’s report on Phison Electronics gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Phison Electronics, Memory management was a key innovation area identified from patents. Phison Electronics's grant share as of September 2023 was 70%. Grant share is based on the ratio of number of grants to total number of patents.
Memory management method for rewritable non-volatile memory module
A recently filed patent (Publication Number: US20230297233A1) describes a memory management method for a rewritable non-volatile memory module. The module consists of multiple dies, each containing multiple planes, and each plane containing multiple physical erasing units. The method involves grouping these physical erasing units into management units, with each management unit containing a smaller number of physical erasing units compared to the total number in the module.
In the first claim, the patent describes the grouping of physical erasing units into management units, where each unit belongs to different planes. The second claim introduces the concept of replacing a bad physical erasing unit with a replacement unit from the same plane. This replacement information is recorded in a management table. The third claim highlights the use of this management table to access the replacement unit when accessing the management unit. Additionally, the table records information about all bad physical erasing units and their replacements in the module.
The patent also describes a memory storage device in the eighth claim, which includes a connection interface unit, a rewritable non-volatile memory module, and a memory control circuit unit. The memory control circuit unit is responsible for grouping the physical erasing units into management units and replacing bad units with replacements from the same plane. It also records replacement information in a management table.
The patent further introduces a memory control circuit unit in the fifteenth claim, which controls the rewritable non-volatile memory module. This unit includes a host interface, a memory interface, and a memory management circuit. The memory management circuit performs the same functions as the memory control circuit unit in the memory storage device, including grouping physical erasing units, replacing bad units, and recording replacement information in a management table.
Overall, this patent presents a memory management method and related devices for a rewritable non-volatile memory module. The method involves grouping physical erasing units into management units and replacing bad units with replacements from the same plane. The use of a management table allows for efficient access to replacement units and records information about all bad units and their replacements in the module.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
