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Universal serial bus interface and circuit thereof and USB flash disk

A universal serial bus and interface circuit technology, applied in the storage field, can solve the problems of low efficiency and high cost, and achieve the effect of high efficiency and low cost

Active Publication Date: 2017-08-29
SHENZHEN DAMAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a universal serial bus interface and its circuit, and a USB flash disk, aiming to solve the problems of high cost and low efficiency in the existing method for distinguishing the connection objects of the USB interface

Method used

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  • Universal serial bus interface and circuit thereof and USB flash disk
  • Universal serial bus interface and circuit thereof and USB flash disk

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] It should be noted that the term "comprising" and any variations thereof in the description and claims of the present invention are intended to cover non-exclusive inclusion. For example, a system, product or device comprising a series of units is not limited to the listed units, but optionally also includes steps or units not listed, or optionally also includes other units inherent to the product or device . In addition, the terms "first", "second", and "third", etc. are used to distinguish different objects, not to describe a specific order.

[0015] The embodiment of the present inventi...

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Abstract

The invention is suitable for the technical field of storage, and provides a universal serial bus interface and a circuit thereof and a USB flash disk. The universal serial bus interface includes an interface unit, a first switch unit, a first main control chip, a second switch unit and a second main control chip, the interface unit can be connected with a computer or an adapter, a power supply output end of the interface unit is connected with a power supply input end of the first switch unit and a power supply input end of the second switch unit, the output end of the first switch unit is connected with a power supply pin of the first main control chip, a control pin of the first main control chip is connected with a controlled end of the second switch unit, and the output end of the second switch unit is connected with a power supply pin of the second main control chip. Connecting objects of the universal serial bus interface are distinguished through hardware, according to the different connecting objects, the different main control chips are started, it is unnecessary to use a single-chip computer, the connecting objects of the universal serial bus interface can be distinguished simply through a simple circuit structure, and the universal serial bus interface has the advantages of being low in cost and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of storage, and in particular relates to a universal serial bus interface and its circuit, and a USB flash disk. Background technique [0002] USB (Universal Serial Bus) is an external bus standard used to regulate the connection and communication between computers and external devices. There are more and more various external devices using the USB interface, such as mobile hard disks, flash disks, digital cameras and other products. These products using the USB interface need to open the corresponding working circuit when connecting to the computer through the USB interface. An additional operating circuit needs to be opened when the interface is connected to the adapter. At present, many products using the USB interface do not distinguish the connection object, that is, they do not distinguish whether they are connected to the computer or the adapter, and open two working circuits at the same time, which ...

Claims

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Application Information

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IPC IPC(8): G06F13/38G06F13/42G06K19/077
CPCG06F13/385G06F13/4282G06F2213/0042G06K19/07732
Inventor 王诗凡
Owner SHENZHEN DAMAI TECH
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