Patent Application
20160147625
This application claims priority to Chinese Patent Application No. 201410666882.5 filed on Nov. 20, 2014, the contents of which are incorporated by reference herein.
The present invention relates to a detecting device for detecting a USB 2.0 specification and an electronic apparatus with the detecting device.
Universal Serial Bus (USB) is an industry standard that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computers and electronic apparatus. The USB 3.0 specification increases data transfer rate, decrease power consumption, increase power output, relative to USB 2.0 specification, and can be backwards-compatible with USB 2.0.
Implementations of the present technology will now be described, by way of example only, with reference to the attached figures.
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts may be exaggerated to better illustrate details and features of the present disclosure.
Several definitions that apply throughout this disclosure will now be presented.
The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like.
The electronic apparatus includes a south bridge 100 and a detecting circuit.
The south bridge 100 can be used to exchange data from the USB storage device. The south bridge 100 includes a USB 3.0 chip and a USB 2.0 chip. The USB 3.0 chip includes a pin 21, a pin 22, a pin 23, and a pin 24. The USB 2.0 chip includes a pin 25 and a pin 26.
The detecting circuit includes a USB interface chip 10 and a USB detecting circuit 50.
The USB interface chip 10 includes a pin 1, a pin 2, a pin 3, and a pin 4. The pin 1 is coupled to a USB power. The pin 2 and the pin 3 are one pair and are defined as USB 2.0 pins to transmit data under USB 2.0 specification. The pin 4 is grounded. When a USB storage device under USB 2.0 specification is coupled to the USB interface chip 10, the USB storage device under USB 2.0 specification can only transmit data through pin 2 and pin 3.
The USB interface chip 10 further includes a pin 5, a pin 6, a pin 7, a pin 8, and a pin 9. The pin 5 and pin 6, and the pin 8 and pin 9 are two pairs and are defined as USB 3.0 pins to transmit data under USB 3.0 specification. The pin 7 is grounded. The pin 5 and pin 6 are coupled to the pin 24 and the pin 23 of the USB 3.0 chip of the south bridge 100. The pin 8 and pin 9 are coupled to the pin 22 and the pin 21 of the USB 3.0 chip of the south bridge 100. When a USB storage device under USB 3.0 specification is coupled to the USB interface chip 10, the USB storage device under USB 3.0 specification can transmit data through the pin 5 and pin 6, and the pin 8 and pin 9.
The USB detecting circuit 50 includes a USB 2.0 detecting circuit 60 and a prompting circuit 70. The USB 2.0 detecting circuit 60 includes two input pins and a control pin. The two input pins of the USB 2.0 detecting circuit 60 are coupled to the pin 2 and pin 3. The control pin of the USB 2.0 detecting circuit 60 is coupled to the prompting circuit 70. The USB 2.0 detecting circuit 60 can detect data exchange requirement from the input pins and send a control signal through the control pin.
The prompting circuit 70 includes a Metal Oxide Semiconductor Field Effect Transistor (MOSEFT) 75 and a sound producing device 77. The MOSEFT 75 can be an N-channel MOSEFT 75. The MOSEFT 75 can control the sound producing device 77 to beep when receives the control signal from the USB 2.0 detecting circuit 60. A source electrode of the MOSEFT 75 is coupled to the sound producing device 77. A drain electrode of the MOSEFT 75 is coupled to a power. A grid electrode of the MOSEFT 75 is coupled to the USB 2.0 detecting circuit 60. A positive electrode of the sound producing device 77 is coupled to the source electrode of the MOSEFT 75. A negative electrode of the sound producing device 77 is grounded. The control signal can be a high level signal. When the grid electrode of the MOSEFT 75 receives the high level signal, the drain electrode and source electrode of the MOSEFT 75 are on. The sound producing device 77 is powered and beeps.
In use, when the USB interface chip 10 is coupled to a USB storage device. When the USB storage device works under USB 3.0 specification, the USB storage device send data exchange requirement through the pin 5 and pin 6, and the pin 8 and pin 9. The USB 2.0 detecting circuit 60 gets no data from the USB interface chip 10. When the USB storage device works under USB 2.0 specification, the USB storage device send data exchange requirement through the pin 2 and pin 3. The USB 2.0 detecting circuit 60 gets data from the USB interface chip 10 and send control signal to the prompt circuit 70. The sound producing device 77 beeps.
The south bridge 101 can be used to exchange data from the USB storage device. The south bridge 101 includes a USB 3.0 chip and a USB 2.0 chip. The USB 3.0 chip includes a pin 21, a pin 22, a pin 23, and a pin 24. The USB 2.0 chip includes a pin 25 and a pin 26.
The detecting circuit includes a USB interface chip 11 and a USB detecting circuit 51.
The USB interface chip 11 includes a pin 1, a pin 2, a pin 3, and a pin 4. The pin 1 is coupled to a USB power. The pin 2 and the pin 3 are one pair and are defined as USB 2.0 pins to transmit data under USB 2.0 specification. The pin 4 is grounded. When a USB storage device under USB 2.0 specification is coupled to the USB interface chip 11, the USB storage device under USB 2.0 specification can only transmit data through pin 2 and pin 3.
The USB interface chip 11 further includes a pin 5, a pin 6, a pin 7, a pin 8, and a pin 9. The pin 5 and pin 6, and the pin 8 and pin 9 are two pairs and are defined as USB 3.0 pins to transmit data under USB 3.0 specification. The pin 7 is grounded. The pin 5 and pin 6, are coupled to the pin 24 and the pin 23 of the USB 3.0 chip of the south bridge 100. The pin 8 and pin 9 are coupled to the pin 22 and the pin 21 of the USB 3.0 chip of the south bridge 101. When a USB storage device under USB 3.0 specification is coupled to the USB interface chip 11, the USB storage device under USB 3.0 specification can transmit data through the pin 5 and pin 6, and the pin 8 and pin 9.
The USB detecting circuit 51 includes a switch circuit 30, a USB 2.0 detecting circuit 61 and a prompting circuit 71. The switch circuit 30 is coupled to the pin 2 and pin 3 at a first terminal, and is coupled to the USB 2.0 detecting circuit 61 and the pin 25 and pin 26 of the USB 2.0 chip of the south bridge 101 at a second terminal. The switch circuit 30 can switch at the second terminal between the USB 2.0 detecting circuit 61 and the pin 25 and pin 26 of the south bridge 101. The switch circuit 30 can be switched by electronic control or manual control. The USB 2.0 detecting circuit 61 includes two input pins and a control pin. The two input pins of the USB 2.0 detecting circuit 61 are coupled to the pin 2 and pin 3. The control pin of the USB 2.0 detecting circuit 61 is coupled to the prompting circuit 71. The USB 2.0 detecting circuit 61 can detect data exchange requirement from the input pins and send a control signal through the control pin.
The prompting circuit 71 includes a MOSEFT 76 and a sound producing device 78. The MOSEFT 76 can be an N-channel MOSEFT 76. The MOSEFT 76 can control the sound producing device 78 to beep when receives the control signal from the USB 2.0 detecting circuit 61. A source electrode of the MOSEFT 76 is coupled to the sound producing device 78. A drain electrode of the MOSEFT 76 is coupled to a power. A grid electrode of the MOSEFT 76 is coupled to the USB 2.0 detecting circuit 61. A positive electrode of the sound producing device 78 is coupled to the source electrode of the MOSEFT 76. A negative electrode of the sound producing device 76 is grounded. The control signal can be a high level signal. When the grid electrode of the MOSEFT 76 receives the high level signal, the drain electrode and source electrode of the MOSEFT 76 are on. The sound producing device 78 is powered and beeps.
When to detect the USB specification of a USB storage device, a second terminal of the switch circuit 30 is switched to the USB 2.0 detecting circuit 61. When the USB storage device works under USB 3.0 specification, the USB storage device send data exchange requirement through the pin 5 and pin 6, and the pin 8 and pin 9. The USB 2.0 detecting circuit 61 gets no data from the USB interface chip 11. When the USB storage device works under USB 2.0 specification, the USB storage device send data exchange requirement through the pin 2 and pin 3. The USB 2.0 detecting circuit 61 gets data from the USB interface chip 11 and send control signal to the prompt circuit 71. The sound producing device 78 beeps.
In other embodiments, the prompt can include display or indicate light to prompt the detected USB specification.
The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of a detecting device. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the details, including in matters of shape, size and arrangement of the parts within the principles of the present disclosure up to, and including, the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the embodiments described above may be modified within the scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201410666882.5 | Nov 2014 | CN | national |
