Providing device parameters

A device parameter and device technology, which is applied in the field of device parameters of non-volatile memory devices, can solve the problems of increasing costs, etc.

Inactive Publication Date: 2011-02-09
SANDISK TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding EEPROM to the device adds considerable expense

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0024] Architecture overview

[0025] figure 1 One embodiment of a non-volatile memory device 100 is depicted having a card reader controller 102 and a memory controller 104 that provide external access to the non-volatile memory 120 via different external interfaces. In one embodiment, device 100 is a portable memory card that can be inserted into various host electronic devices. For example, device 100 may be inserted into a digital camera to store digital images in non-volatile memory 120 . Device 100 may also be inserted into a handheld computer, personal digital assistant (PDA), global positioning satellite (GPS) device, music player, camcorder, smart phone, and the like. The device 100 can also be connected to an external host via a cable such as a USB cable. Device 100 may be used to store digital data from or transmit digital data to a computer system, such as a personal computer.

[0026] The device 100 can be electrically connected to an external host through the...

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PUM

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Abstract

A non-volatile storage device has first and second controllers that provide external access to non-volatile memory using different protocols. In response to a request from the first controller, the second controller retrieves parameters from the non-volatile memory and provides the retrieved parameters to the first controller. In one embodiment, the device parameters are USB descriptors, which may include a vendor ID, a product ID, a product string, and / or a serial number. The first controller may be a Universal Serial Bus (USB) card reader controller. Examples of the second controller include a Secure Digital (SD) controller, a CompactFlash (CF) controller, a MemoryStick controller, or a different type of controller that is able to provide external access to the non-volatile memory. The first controller provides the device parameters to a host during enumeration of the non-volatile storage device. The device parameters may be used to establish settings for the first controller.

Description

technical field [0001] The present invention relates to providing device parameters pertaining to non-volatile memory devices. Background technique [0002] Peripheral devices such as non-volatile memory devices often have a need to provide device parameters pertaining to the device. For example, when a peripheral device is initially attached to a host (eg, a computer or other device), the host may request device parameters. As a specific example, when a USB device is initially attached to a host computer system and powered on, the host will request device parameters from the USB device during the enumeration process. [0003] A USB device reports its device parameters to the host using USB descriptors, which are data structures that describe information such as what the device is, which vendor made the device, and which version of the USB protocol the device supports. Examples of USB descriptor types include Device Descriptor, String Descriptor, Configuration Descriptor, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/10G06F9/06G06F12/00G06F15/00
CPCG06F13/385
Inventor 卡·I·扬史蒂文·斯普劳斯达瓦尔·帕里克内森·拉帕波特
Owner SANDISK TECH LLC
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