Extended flash disk
A flash disk and flash unit technology, applied in memory systems, instruments, computing, etc., can solve the problems that two flash disks cannot directly exchange data, and the capacity expansion of flash disks is inconvenient, and achieves the effect of convenient capacity and convenient expansion.
Active Publication Date: 2009-02-04
NETAK TECH KO LTD
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Problems solved by technology
[0007] Therefore, the purpose of the present invention is to provide a kind of expandable flash disk that can realize capacity expansion easily, in order to overcome the inconvenience of flash disk capacity expansion in the prior art, and the problem that can't directly exchange data between two flash disks
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[0023] The present invention will be described in detail below in conjunction with the accompanying drawings, and the accompanying drawings are only for illustration, not for limiting the scope of patent protection of the present invention.
[0024] see figure 1 , the expandable flash memory disk of the present invention includes: a control unit, a flash memory unit and an external interface, the control unit is provided with firmware, the data / address line of the external interface is connected in parallel with the data line of the flash memory unit, and its control line It is connected in parallel with the control line of the flash memory unit, and the chip select pin of its external interface is connected to the control control separately. This external interface can correspond to one or more physical interfaces, and the expandable flash disk can pass through the external interface. It can be connected with another expandable flash disk, and can also be connected with an or...
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Comparing with prior art, the disclosed flash disk solves issues of not easy to expand capacity of disk, and not possible to exchange data between two flash disks directly. The disclosed flash disk includes a control unit with a firmware setup inside and a flash memory unit. Characters are that the flash disk includes external interface for connecting to the control unit and flash unit. Data line of the external interface is connected to data line of the flash unit in parallel, and control line of the external interface is connected to data line of the flash unit in parallel. Pin for chip selection is connected to end for chip selection of the control end alone. Through the said external interface, connecting to other flash disks with relevant physical interface, the disclosed flash disk can execute operations for reading and writing data from / to the connected flash disk; or the disclosed flash disk and connected flash disk together is as a whole to exchange data with host.
Description
technical field [0001] The invention relates to a data storage technology of a flash disk, in particular to an expandable flash disk and a capacity expansion method thereof. Background technique [0002] In the current market, the vast majority of flash disk products are composed of control chips, flash memory chips (Flash) and their peripheral components, and as flash disks become more and more popular, consumers need to store more and more data , large-capacity flash disks will appear, and their storage capacity is fixed, but for most of the cases, the storage capacity of flash disks is sufficient, but for users who occasionally need larger storage capacity, Large-capacity flash drives are underutilized. [0003] This phenomenon is particularly evident in the case of collective use. For example, suppose the company has 40 employees, so if you buy 40 32M flash drives, one for each employee, sometimes the capacity of 32M may not be enough. In some cases, if the data to be ...
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IPC IPC(8): G06F13/00G06F12/00
Inventor 刘宇峰成晓华
Owner NETAK TECH KO LTD