SK Hynix has been granted a patent for a PCIe interface device that facilitates communication between a host and a DMA device. The device includes a link training module, PCIe register, and controller to manage clock switching and data processing. GlobalData’s report on SK Hynix gives a 360-degree view of the company including its patenting strategy. Buy the report here.

According to GlobalData’s company profile on SK Hynix, was a key innovation area identified from patents. SK Hynix's grant share as of February 2024 was 71%. Grant share is based on the ratio of number of grants to total number of patents.

Pcie interface device with clock switching and link recovery

Source: United States Patent and Trademark Office (USPTO). Credit: SK Hynix Inc

A recently granted patent (Publication Number: US11921657B2) discloses a Peripheral Component Interconnect Express (PCIe) interface device designed to facilitate communication between a host and a Direct Memory Access (DMA) device. The device includes a PCIe layer for communication, a link training module for host link training, a PCIe register for data storage, and a PCIe controller for clock management and link recovery in case of a reset signal or reference clock failure. The controller can switch between PCIe clock and internal clock, process data, and control link recovery based on specific conditions.

Furthermore, the patent details a PCIe device with dual port functionality, allowing communication with multiple hosts through separate links. A port mode controller manages the operating mode, switching between single port mode (one port active) and dual port mode (both ports active). The controller can reset or link up the second port while the first link is active, extend lane width, reduce lane width, and perform link training based on mode change requests from the hosts. The device includes a PCIe interface device with clock switching capabilities and data processing based on internal clock, triggered by reset signals from the hosts. Overall, the patent highlights innovative features in PCIe interface devices for efficient communication and link management in complex computing environments.

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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.