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USB shared storage device

Inactive Publication Date: 2021-04-06
CORIGINE (SHANGHAI) INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can only be used by a single host. If one copy of data is applied to two hosts, the data needs to be backed up on the two computers respectively.

Method used

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  • USB shared storage device
  • USB shared storage device

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Embodiment Construction

[0020] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0021] A USB shared storage device, comprising several upstream USB ports, characterized in that several of the upstream USB ports are respectively connected to several USB host terminals, enumerated into several USB storage devices, and each of the USB storage devices is set There are USB device controllers, which are used to work independently to realize the enumeration of USB storage devices. Several of the USB device controllers are connected to the memory main control module, and the memory main control module is connected to some shared memories through memory interfaces. A memory master is installed in the shared memory.

[0022] The memory interface includes a SATA interface or an M2 interface.

[0023] A method for reading and writing a USB shared storage device, comprising the following steps:

[0024] S1. The USB host sends a...

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PUM

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Abstract

The invention discloses a USB shared storage device, which comprises a plurality of uplink USB ports, and is characterized in that the plurality of uplink USB ports are respectively connected to a plurality of USB host ends to enumerate a plurality of USB storage devices, and a USB device controller is arranged in each USB storage device and is used for independently working to enumerate the USB storage devices; the plurality of USB device controllers are connected with the memory main control module, the memory main control module is connected with a plurality of shared memories through memory interfaces, and memory main controllers are installed in the shared memories. Compared with the prior art, the invention is suitable for large-capacity storage requirements, and the problem of maximum utilization of large-capacity storage resources is solved; according to the invention, a plurality of host devices can share and access the USB storage device, so that the USB device is prevented from being repeatedly plugged and unplugged among the hosts; by adding the custom request, the current storage state of the shared memory is synchronized, so that simultaneous reading and writing are realized, and the phenomenon of synchronization exception is avoided.

Description

technical field [0001] The invention relates to the field of USB equipment, in particular to a USB shared storage device. Background technique [0002] As a general-purpose bus, USB is becoming more and more popular. Now USB has developed to USB4.0 version, among the most commonly used USB devices, USB storage devices have been widely used. U disks, mobile hard disks, USB-based extended hard disks, and USB-based hard disk enclosures on the market are all very commonly used. However, due to design reasons, a storage device can only be connected to one host. Such a large-capacity memory data cannot be shared on two hosts, and needs to be copied, two copies, wasting storage space. [0003] If frequent transfers are required, data needs to be frequently exchanged, and it is not very convenient to plug and unplug storage between two hosts. For embedded engineers, a common scenario is that a computer compiles the code, copies it into a USB flash drive, inserts the USB flash dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F13/16G06F13/42
CPCG06F3/0604G06F3/0655G06F3/0629G06F13/1668G06F13/4282G06F2213/0042
Inventor 程凯卢笙陈盈安姜欣肖骁
Owner CORIGINE (SHANGHAI) INC
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