Winbond Electronics has patented a semiconductor memory device that automatically restores interrupted writing due to power supply fluctuations. The device features a NOR array and a variable resistance array, allowing unwritten data to be saved and later restored when power is resumed. GlobalData’s report on Winbond 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 Winbond Electronics, Magnetic RAMs was a key innovation area identified from patents. Winbond Electronics's grant share as of July 2024 was 77%. Grant share is based on the ratio of number of grants to total number of patents.
Automatic restoration of interrupted writing in memory devices
The patent US12073882B2 describes a semiconductor memory device that integrates two distinct memory cell arrays: one utilizing a NOR or NAND flash memory structure and the other employing a variable resistance memory structure. The device features a control unit responsible for managing the reading and writing processes of selected memory cells across both arrays. A key innovation is the inclusion of a first detection unit that monitors the power supply voltage. If a drop to a power-off level is detected during a writing operation, the control unit is designed to transfer unwritten data from the first memory cell array to the second memory cell array, ensuring data integrity during power interruptions.
Additionally, the semiconductor memory device incorporates a second detection unit that identifies when the power supply voltage returns to a power-on level. Upon detection, the control unit retrieves the unwritten data from the second memory cell array and writes it back into the first memory cell array. The claims further elaborate on the functionality of the control unit, which can also store addresses and commands related to the unwritten data in the second memory cell array. Furthermore, the device includes a data holding unit for external data input, which can be written into the first memory cell array while simultaneously managing unwritten data. The design also allows for the selection of data to be written into specific memory cells, enhancing the device's operational efficiency and reliability.
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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.
