CN210404233U - Computer peripheral assembly and its peripheral device and transmission line - Google Patents
Computer peripheral assembly and its peripheral device and transmission line Download PDFInfo
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- CN210404233U CN210404233U CN201921581552.0U CN201921581552U CN210404233U CN 210404233 U CN210404233 U CN 210404233U CN 201921581552 U CN201921581552 U CN 201921581552U CN 210404233 U CN210404233 U CN 210404233U
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- connection port
- charging current
- transmission line
- peripheral device
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Abstract
The application provides a computer peripheral component, a peripheral device and a transmission line thereof. The computer peripheral component comprises a transmission line and a peripheral device. The transmission line is used for receiving the charging current from the main device and transmitting the charging current. The transmission line comprises a first connection port, a second connection port and a first impedance component. The first impedance component is located at the first connection port. The peripheral device comprises a third connection port, a second impedance component and a control circuit. The second impedance component is coupled to the first impedance component through the third connection port to form a voltage dividing line between the voltage source and the ground terminal with the first impedance component. When the transmission line is electrically connected with the main device and the peripheral device, the control circuit determines that the charging current is the charging current with a larger current value or the charging current with a smaller current value according to the voltage division signal generated by the voltage division line.
Description
Technical Field
The present application relates to a computer peripheral device.
Background
With the progress of electronic technology, consumer electronics become a necessary tool in modern life. In the portable requirement, electronic products are charged by using a signal transmission interface (such as Universal Serial Bus (USB)) as a trend. However, if the electronic product lacks a charging protection mechanism during the charging process, the electronic product is easily overloaded and cannot operate normally.
SUMMERY OF THE UTILITY MODEL
The application provides a computer peripheral component which comprises a transmission line and a peripheral device. The transmission line is used for receiving a charging current from the main device and transmitting the charging current. The transmission line comprises a first connection port, a second connection port and a first impedance component. The second connection port is coupled to the first connection port and the first impedance element is located at the first connection port. The peripheral device comprises a third connection port, a second impedance component and a control circuit. The third connection port receives the charging current through the transmission line, and the second impedance element has two ends respectively coupled to the third connection port and a voltage source and is used for being coupled to the first impedance element through the third connection port, and the second impedance element and the first impedance element form a voltage dividing line between the voltage source and a ground terminal. The control circuit is coupled to the second impedance element and the third connection port, and when the transmission line is electrically connected to the main device and the peripheral device, the control circuit determines the charging current to be a first charging current with a larger current value or a second charging current with a smaller current value according to a voltage division signal generated by the voltage division line.
The present application further provides a peripheral device including a connection port, an impedance component and a control circuit. Two ends of the impedance component are respectively coupled with the connection port and a voltage source. The control circuit is coupled to the impedance component and the connection port, and is configured to determine whether a voltage value of the connection point meets a predetermined condition according to a connection point between the impedance component and the connection port, so as to determine whether the connection port receives a first charging current or a second charging current, where a current value of the first charging current is greater than a current value of the second charging current.
The present application further provides a transmission line including a first connection port, a conductive line, a second connection port, and an impedance element. The second connecting port is connected with the first connecting port through a lead. The impedance component is located at the first connection port.
In summary, according to the embodiments of the computer peripheral device and the transmission line thereof of the present application, the peripheral device can determine whether the connection port can bear the charging current with a larger current value, and determine to extract the charging current with a larger current value or a smaller current value to the power supplying main device according to the current bearing capability of the connection port, that is, the computer peripheral device has a protection mechanism, which can prevent the connection port and the transmission line of the power supplying main device from being unable to operate normally due to overload caused by the computer peripheral device extracting an excessive current to the power supplying main device.
Other features and embodiments of the present application will be described in detail below with reference to the drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic external view of an embodiment of a computer peripheral device according to the present application;
FIG. 2 is a block diagram illustrating an embodiment of a computer peripheral device according to the present application;
FIG. 3 is a schematic diagram of one embodiment of the first connection port of FIG. 2;
FIG. 4 is a schematic diagram of one embodiment of the second connection port of FIG. 2;
FIG. 5 is a block diagram illustrating the transmission line of FIG. 1 connected to a peripheral device in a first direction according to an embodiment;
FIG. 6 is a block diagram illustrating the transmission line of FIG. 1 connected to a peripheral device in a second direction according to an embodiment.
Detailed Description
The positional relationship described in the following embodiments includes: the top, bottom, left and right, unless otherwise indicated, are based on the orientation of the elements in the drawings.
Referring to fig. 1, fig. 1 is an external view of an embodiment of a computer peripheral component according to the present application. As shown in FIG. 1, a computer peripheral component 1 can be connected to a host device 2, and the computer peripheral component 1 includes a transmission line 12 and a peripheral device 11. In one embodiment, the peripheral device 11 is a mouse and the main device 2 is a notebook computer, but the present application is not limited thereto, and the peripheral device 11 may be a joystick or a keyboard, and the main device 2 may be a personal computer or a tablet computer.
The peripheral device 11 has a power storage function (i.e., the peripheral device 11 can be charged), and the peripheral device 11 has a fast charging mode in which the charging speed is fast and a general charging mode in which the charging speed is slow. The transmission line 12 is electrically connected between the peripheral device 11 and the host device 2, and the transmission line 12 can transmit the charging current provided by the host device 2 to the peripheral device 11. When the transmission line 12 electrically connects the host device 2 and the peripheral device 11, the peripheral device 11 determines the charging current received from the host device 2 to be a first charging current or a second charging current, wherein the current value of the first charging current is greater than the current value of the second charging current. When the peripheral device 11 determines that the first charging current is received from the host device 2, the peripheral device 11 performs the charging operation in the fast charging mode according to the first charging current, i.e., the time required for charging the peripheral device 11 to the full state is short. When the peripheral device 11 determines that the host device 2 receives the second charging current, the peripheral device 11 performs its charging operation in the normal charging mode according to the second charging current, i.e. the time required for the peripheral device 11 to be charged to the full state is longer.
Please refer to fig. 1 and fig. 2. FIG. 2 is a block diagram of an embodiment of a computer peripheral component 1 according to the present application. The peripheral device 11 includes a connection port 111, an impedance component 112, and a control circuit 113. The connection port 111 is used for connecting the transmission line 12. The impedance device 112 has two ends respectively coupled to the connection port 111 and the voltage source VDD, and the impedance device 112 can be coupled to the transmission line 12 through the connection port 111. A connection point C is provided between the impedance device 112 and the connection port 111, and the control circuit 113 is connected to the connection point C to couple the impedance device 112 and the connection port 111. When the connection port 111 is connected to the host device 2 via the transmission line 12, the control circuit 113 determines whether the voltage value of the connection point C meets a predetermined condition according to the voltage value of the connection point C, that is, the control circuit 113 determines whether the transmission line 12 connected to the peripheral device 11 meets a predetermined type capable of carrying a larger charging current according to the voltage value of the connection point C. When the voltage value of the connection point C meets the predetermined condition, the control circuit 113 determines that the transmission line 12 can carry a predetermined type of a large charging current, and the control circuit 113 determines that the charging current received by the connection port 111 from the host device 2 is a first charging current having a large current value, so that the peripheral device 11 performs a charging operation in a fast charging mode; when the voltage value of the connection point C does not meet the predetermined condition, the control circuit 113 determines that the transmission line 12 connected to the peripheral device 11 cannot carry a predetermined type of a larger charging current, and the control circuit 113 determines that the charging current received by the connection port 111 from the host device 2 is a second charging current having a smaller current value, so that the peripheral device 11 performs a charging operation in a normal charging mode, thereby avoiding the problem that the transmission line 12 is overloaded due to the fact that the transmission line 12 cannot carry the charging current having the larger current value, which causes an abnormally high temperature or damage to the transmission line 12, and even causes the damage to the peripheral device 11.
In one embodiment, as shown in fig. 2, the transmission line 12 includes two connection ports 122 and 121 (for convenience of description, hereinafter referred to as a first connection port 121 and a second connection port 122, and the connection port 111 of the peripheral device 11 is referred to as a third connection port 111 and the connection port 21 of the host device 2 is referred to as a fourth connection port 21), and the two connection ports 122 and 121 are connected to each other via a conductive line of the transmission line 12. In an embodiment, the first connection port 121 is used for connecting the third connection port 111, the second connection port 122 is used for connecting the fourth connection port 21, the second connection port 122 can receive the aforementioned first charging current or second charging current from the main device 2 through the fourth connection port 21 and transmit the same to the first connection port 121, and the third connection port 111 is used for receiving the first charging current or second charging current from the first connection port 121.
Furthermore, the transmission line 12 includes an impedance element 123 (hereinafter, the impedance element 123 of the transmission line 12 is referred to as a first impedance element 123 and the impedance element 112 of the peripheral device 11 is referred to as a second impedance element 112), and the first impedance element 123 is located at the first connection port 121. When the second connection port 122 is connected to the fourth connection port 21 and the first connection port 121 is connected to the third connection port 111, the second impedance element 112 of the peripheral device 11 is coupled to the first impedance element 123 of the transmission line 12 through the third connection port 111, and the second impedance element 112 and the first impedance element 123 are coupled to the ground terminal of the host device 2 through the second connection port 122 and the fourth connection port 21. Thus, the second impedance element 112 and the first impedance element 123 form a voltage dividing line between the voltage source VDD and the ground in the host device 2. The control circuit 113 determines the charging current to be a first charging current with a larger current value or a second charging current with a smaller current value according to the voltage dividing signal generated by the voltage dividing line. In detail, based on the voltage value of the voltage source VDD and the impedance values of the second impedance element 112 and the first impedance element 123, the connection point C on the voltage dividing line generates a voltage dividing signal, and the control circuit 113 determines whether the voltage value of the voltage dividing signal meets the predetermined condition. When the control circuit 113 determines that the voltage value of the divided voltage signal meets the predetermined condition, it indicates that the two connection ports 122 and 121 of the transmission line 12 can carry the charging current with a larger current value. At this time, when the control circuit 113 determines that the voltage value of the divided voltage signal does not meet the predetermined condition, it indicates that the two connection ports 122 and 121 of the transmission line 12 cannot carry the charging current with a larger current value.
Therefore, no matter the transmission line 12 does not include the first impedance element 123 and does not form the voltage value of the divided voltage signal generated by the connection point C due to the voltage dividing line, or the transmission line 12 includes the first impedance element 123 and does not form the voltage dividing line, the control circuit 113 can determine that the two connection ports 122 and 121 cannot carry the charging current with a larger current value, the control circuit 113 determines that the main device 2 receives the second charging current, and the peripheral device 11 is in the normal charging mode. When the transmission line 12 includes the first impedance element 123 and the impedance value of the first impedance element 123 makes the voltage value generated at the connection point C meet the predetermined condition, the control circuit 113 determines that the main device 2 receives the first charging current, and the peripheral device 11 is in the fast charging mode.
In one embodiment, the voltage source VDD has a voltage value of 3.3V, the second impedance element 112 and the first impedance element 123 are resistors, respectively, and the second impedance element 112 and the first impedance element 123 have the same resistance value, for example, the resistance values of the second impedance element 112 and the first impedance element 123 may be 1M Ω (ohm). Therefore, according to the voltage division law, the predetermined condition may be 1.65V, or the predetermined condition may be a voltage range, for example, ± 10% of 1.65V, so that the predetermined condition is in the range of 1.48V to 1.81V, and the control circuit 113 may determine whether the voltage value of the connection point C is 1.65V or 1.48V to 1.81V.
In an embodiment, the second connection port 122 and the first connection port 121 of the transmission line 12 conform to the same specification of USB3.0 or more, for example, the second connection port 122 and the first connection port 121 both conform to the specification of USB3.0 Type a, or the second connection port 122 and the first connection port 121 both conform to the specification of USB Type-C. In another embodiment, the second connection port 122 and the first connection port 121 may also conform to different specifications of USB3.0 or more, for example, the second connection port 122 conforms to the specification of USB3.0 Type a, and the first connection port 121 conforms to the specification of USB Type-C. Therefore, when the voltage value of the connection point C meets the predetermined condition, the current value of the first charging current determined by the control circuit 113 is 900mA because the second connection port 122 and the first connection port 121 meet the specification of USB3.0 or more, and when the voltage value of the connection point C does not meet the predetermined condition, the current value of the second charging current determined by the control circuit 113 is 500mA based on the specification of USB3.0 or less, for example, the specification of USB 2.0.
In an embodiment, taking the aforementioned first connection port 121 conforming to type C and the aforementioned second connection port 122 conforming to USB3.0 type a specification as an example, as shown in fig. 3, the first connection port 121 includes a ground pin a1 and a ground pin B1 (hereinafter referred to as a first ground pin a1 and a second ground pin B1, respectively), the first ground pin a1 supports the transmission line 12 to be connected to the third connection port 111 of the peripheral device 11 in the first direction in which the transmission line is inserted in the forward direction, the second ground pin B1 supports the transmission line 12 to be connected to the third connection port 111 of the peripheral device 11 in the second direction in which the transmission line is inserted in the reverse direction, the first ground pin a1 and the second ground pin B1 are located on the left and right sides of the first connection port 121, respectively, and the first ground pin a1 and the second ground pin B1 are coupled to the first impedance component 123. As shown in fig. 4, the second connection port 122 includes a ground pin 122G (hereinafter referred to as a third ground pin 122G) for providing a ground for a high speed (super) data signal, and the third ground pin 122G is coupled to the first impedance element 123 of the first connection port 121 via a conductive line of the transmission line 12.
Accordingly, the third connection port 111 of the peripheral device 11 includes a ground line corresponding to the first ground pin a1 and the second ground pin B1; corresponding to the third ground pin 122G, the fourth connection port 21 of the host device 2 includes a ground line. When the first connection port 121 is connected to the third connection port 111 of the peripheral device 11 in the first direction, as shown in fig. 5, the first ground pin a1 of the first connection port 121 is connected to the ground line of the third connection port 111; when the first connection port 121 is connected to the third connection port 111 of the peripheral device 11 in the second direction, as shown in fig. 6, the second ground pin B1 of the first connection port 121 is connected to the ground line of the third connection port 111. When the first connection port 121 is connected to the third connection port 111 and the second connection port 122 is connected to the fourth connection port 21, the third ground pin 122G of the second connection port 122 is connected to the ground line of the fourth connection port 21, the second impedance element 112 is coupled to the first impedance element 123 through the first ground pin a1 or the second ground pin B1, the first impedance element 123 is coupled to the ground terminal inside the host device 2 through the third ground pin 122G and the ground line of the fourth connection port 21, and the second impedance element 112 and the first impedance element 123 form a voltage dividing line between the voltage source VDD inside the peripheral device 11 and the ground terminal inside the host device 2. Taking the aforementioned preset condition as 1.65V as an example, when the voltage value of the voltage source VDD is 3.3V and the impedance elements 112 and 123 have the same impedance value, the control circuit 113 determines that the voltage value of the connection point C meets the preset condition according to the voltage value of the connection point C, and the control circuit 113 determines that the main device 2 draws the first charging current with a larger current value.
In one embodiment, as shown in FIG. 3, the first port 121 conforming to type C specification includes 24 pins A1-A12 and B1-B12 that are symmetrical to each other; as shown in FIG. 4, the second port 122 conforming to the USB3.0 type A specification includes nine pins 122A-122I. The ground pin 122D (hereinafter, referred to as a fourth ground pin 122D) provides a charging current (such as the aforementioned first charging current or the second charging current) to ground, and the fourth ground pin 122D and the third ground pin 122G are a fourth pin (GND) and a seventh pin (GND _ DRAIN) of the second connection port 122, respectively.
In an embodiment, as shown in fig. 2, the control circuit 113 includes a Microcontroller (MCU)1131 and a charging control chip (charge IC)1132, the microcontroller 1131 determines whether the voltage value of the connection point C meets a predetermined condition, the microcontroller 1131 sends a determination result to the charging control chip 1132, and the charging control chip 1132 determines to draw the first charging current or the second charging current from the host device 2. When the microcontroller 1131 determines that the voltage value of the connection point C meets the preset condition, the charge control chip 1132 determines to extract a first charging current from the main device 2, and when the microcontroller 1131 determines that the voltage value of the connection point C does not meet the preset condition, the charge control chip 1132 determines to extract a second charging current from the main device 2.
In summary, according to an embodiment of the computer peripheral device and the transmission line thereof of the present application, the peripheral device can determine whether the connection port can bear the charging current with a larger current value, and determine to extract the charging current with a larger current value or a smaller current value to the power supply main device according to the current bearing capability of the connection port, that is, the computer peripheral device has a protection mechanism, so that the connection port and the transmission line thereof cannot normally operate due to overload caused by the computer peripheral device extracting an excessive current to the power supply main device.
The above-described embodiments and/or implementations are only for illustrating the preferred embodiments and/or implementations of the technology of the present application, and are not intended to limit the implementations of the technology of the present application in any way, and those skilled in the art can make modifications or changes to other equivalent embodiments without departing from the scope of the technology disclosed in the present application, but should be construed as technology or implementations substantially the same as the present application.
Claims (13)
1. A computer peripheral component adapted for a host device, the computer peripheral component comprising:
a transmission line to receive a charging current from the master device and to deliver the charging current, the transmission line comprising:
a first connection port;
a wire;
a second connection port connected to the first connection port through the wire; and
the first impedance component is positioned at the first connection port; and
a peripheral device, comprising:
a third connection port for receiving the charging current via the transmission line;
a second impedance element having two ends respectively coupled to the third connection port and a voltage source, and configured to be coupled to the first impedance element via the third connection port; and
a control circuit coupled to the second impedance element and the third connection port,
when the transmission line is electrically connected with the main device and the peripheral device, the first impedance component and the second impedance component form a voltage division line between the voltage source and a grounding end of the main device, and the control circuit determines the charging current to be a first charging current or a second charging current according to a voltage division signal generated by the voltage division line, wherein the current value of the first charging current is greater than that of the second charging current.
2. The computer peripheral component of claim 1, wherein the second connection port receives the charging current from the host device and transmits the charging current to the first connection port, and the third connection port is configured to connect to the first connection port to receive the charging current.
3. The computer peripheral device according to claim 1, wherein the control circuit determines whether a voltage value of the voltage division signal satisfies a predetermined condition, and determines the charging current as the first charging current when the voltage value satisfies the predetermined condition, and determines the charging current as the second charging current when the voltage value does not satisfy the predetermined condition.
4. The computer peripheral component of claim 1, wherein the control circuit is connected to a connection point between the second impedance element and the third connection port, the connection point being located on the voltage dividing line and the connection point generating the voltage dividing signal.
5. The computer peripheral component of claim 1, wherein the first connection port comprises:
the first grounding pin is used for connecting the transmission line with the peripheral device in a first direction; and
the second grounding pin is used for connecting the transmission line with the peripheral device in a second direction;
the first and second grounding pins are respectively located at two sides of the first connection port, and the first impedance component is coupled to the first and second grounding pins.
6. The computer peripheral component of claim 5, wherein the second connection port comprises:
a third ground pin coupled to the first impedance element for providing a high-speed data signal ground; and
and the fourth grounding pin is used for providing the charging current to be grounded.
7. The computer peripheral component of claim 1, wherein the first port conforms to USB Type-C specification and the second port conforms to USB3.0 Type a specification.
8. The computer peripheral device according to claim 3, wherein the control circuit comprises a microcontroller and a charging control chip, the microcontroller determines whether the voltage value meets the predetermined condition, and the charging control chip determines whether the charging current is the first charging current or the second charging current according to the determination result of the microcontroller.
9. A peripheral device, comprising:
a connection port;
the two ends of the impedance component are respectively coupled with the connection port and the voltage source; and
the control circuit is coupled to the impedance component and the connection port and used for judging whether a voltage value of a connection point between the impedance component and the connection port meets a preset condition or not so as to determine whether the connection port receives a first charging current or a second charging current, wherein a current value of the first charging current is larger than a current value of the second charging current.
10. A transmission line, comprising:
a first connection port:
a wire;
a second connection port connected to the first connection port through the wire; and
and the impedance component is positioned at the first connection port.
11. The transmission line of claim 10, wherein the first connection port includes a first ground pin and a second ground pin, the first ground pin and the second ground pin being respectively located on opposite sides of the first connection port, the impedance element being coupled to the first ground pin and the second ground pin.
12. The transmission line of claim 11, wherein the second connection port includes a third ground pin coupled to the impedance component.
13. The transmission line of claim 10, wherein the first connection port conforms to the USB Type-C specification and the second connection port conforms to the USB3.0 Type a specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921581552.0U CN210404233U (en) | 2019-09-23 | 2019-09-23 | Computer peripheral assembly and its peripheral device and transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921581552.0U CN210404233U (en) | 2019-09-23 | 2019-09-23 | Computer peripheral assembly and its peripheral device and transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210404233U true CN210404233U (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921581552.0U Active CN210404233U (en) | 2019-09-23 | 2019-09-23 | Computer peripheral assembly and its peripheral device and transmission line |
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| Country | Link |
|---|---|
| CN (1) | CN210404233U (en) |
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2019
- 2019-09-23 CN CN201921581552.0U patent/CN210404233U/en active Active
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