CN112115087A - Universal serial bus adapter and system - Google Patents
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The application relates to a universal serial bus adapter and a system, wherein the universal serial bus adapter is provided with an audio and video signal processing circuit, a power supply processing circuit and a control circuit. The control circuit controls the working state of the power supply processing circuit according to the audio and video signals and the power supply signals in the external equipment, and the audio and video signals and the power supply signals are respectively connected to the second interface through the audio and video signal processing circuit and the power supply processing circuit, so that the audio and video signals and the power supply signals in the external equipment are separated and processed. Even when the time sequence of the audio and video equipment and the power equipment in the external equipment inserted into the first interface is changed, the control circuit can process the audio and video signals and the power signals through two different paths of the audio and video signal processing circuit and the power processing circuit respectively, so that the technical problem of poor compatibility of the conventional universal serial bus in the prior art is solved, and the compatibility of the universal serial bus is greatly improved.
Description
Technical Field
The present application relates to the field of signal connector technology, and in particular, to a universal serial bus adapter and system.
Background
Generally, electronic devices such as mobile phones, tablet computers, and notebooks are generally charged, play videos and audios, etc. by using some external devices, such as chargers, audio devices, or video devices, etc., in order to charge the electronic devices or improve the use effect of the electronic devices. At present, along with the continuous improvement of the industry standard of electronic equipment, the electronic equipment is generally provided with a Type-C interface and is connected with the electronic equipment and external equipment through a universal serial bus (USB data line). When the usb has a plurality of connection ports, different connection ports are connected to different external devices, such as a charger, an audio device, or a video device, but different signals enter the usb at different timings, which easily causes a delay or misjudgment of the internal controller of the usb on the processing of different signals, thereby causing the electronic device or the external device not to generate sound or video or not to be charged. Therefore, the compatibility of the current universal serial bus is poor.
Disclosure of Invention
In view of the above, it is necessary to provide a universal serial bus adapter and a system for solving the problem of poor compatibility of the current universal serial bus.
A universal serial bus adapter, comprising:
the first interface is used for connecting external equipment, and the external equipment comprises audio and video equipment and power supply equipment;
the second interface is used for connecting the main equipment;
the first end of the audio and video signal processing circuit is in signal connection with the first interface, the second end of the audio and video signal processing circuit is in signal connection with the second interface, and the audio and video signal processing circuit is used for mutually converting an audio and video signal input through the first interface and a high-speed signal input through the second interface and outputting the audio and video signal and the high-speed signal through the second interface and the first interface respectively;
the first end of the power supply processing circuit is electrically connected with the first interface, the second end of the power supply processing circuit is electrically connected with the second interface, and the third end of the power supply processing circuit is electrically connected with the power supply end of the audio and video signal processing circuit;
and the control circuit is respectively in signal connection with the first interface and the control end of the power supply processing circuit and is used for controlling the power supply processing circuit to work.
In one embodiment, the control circuit is used for
Under the condition that only power supply equipment is arranged in the external equipment, the power supply processing circuit is controlled to be connected with the first interface and the second interface and to be disconnected with the audio and video signal processing circuit;
under the condition that only audio and video equipment exists in the external equipment, the power supply processing circuit is controlled to be connected with the second interface and the power supply processing circuit;
and under the condition that the external equipment simultaneously comprises audio and video equipment and power supply equipment, controlling the power supply processing circuit to be connected with the first interface, the second interface and the power supply processing circuit.
In one embodiment, the power supply processing circuit includes:
a first power switch having a first end electrically connected to the first interface and a second end electrically connected to the second interface;
and the first end of the second power supply switcher is electrically connected with the third end of the first power supply switcher, and the second end of the second power supply switcher is electrically connected with the power supply end of the audio and video signal processing circuit.
In one embodiment, the power supply processing circuit further includes:
the input end of the voltage regulator is electrically connected with the third end of the first power supply switcher, the output end of the voltage regulator is respectively electrically connected with the power supply end of the audio and video signal processing circuit and the control circuit, and the voltage regulator is used for converting the voltage output by the first power supply switcher into preset voltage.
In one embodiment, the audio/video signal processing circuit includes:
the first end of the protocol processor is in signal connection with the external equipment;
and the first end of the signal converter is in signal connection with the second end of the protocol processor, the second end of the signal converter is in signal connection with the second interface, and the signal converter is used for converting the audio and video signals in the external equipment into high-speed signals.
In one embodiment, the audio/video signal processing circuit further includes:
the first end of the signal switcher is in signal connection with the second end of the signal switcher, the second end of the signal switcher is in signal connection with the second interface, the control end of the signal switcher is in signal connection with the control circuit, and the signal switcher is used for switching the transmission direction of the high-speed signal.
In one embodiment, the method further comprises the following steps:
the controller is in signal connection with the control end of the protocol processor and is used for controlling the work of the protocol processor;
the controller is also in signal connection with the signal converter and is further used for waking up the signal converter when the signal converter is in signal dormancy.
In one embodiment, the method further comprises the following steps:
and the memory is in signal connection with the controller.
In one embodiment, the first interface includes:
the audio interface is in signal connection with the first end of the audio and video signal processing circuit;
the video interface is in signal connection with the first end of the audio and video signal processing circuit;
and the power supply interface is electrically connected with the first end of the power supply processing circuit.
A universal serial bus adapter system, comprising:
the universal serial bus adapter as described above;
the external equipment is in signal connection with the first interface;
and the main equipment is in signal connection with the second interface.
One embodiment of the application provides a universal serial bus adapter, which is provided with the audio and video signal processing circuit, the power supply processing circuit and the control circuit. The control circuit controls the working state of the power supply processing circuit according to the audio and video signals and the power supply signals in the external equipment, and the audio and video signals and the power supply signals are respectively connected to the second interface through the audio and video signal processing circuit and the power supply processing circuit, so that the audio and video signals and the power supply signals in the external equipment are separated and processed. Even when the time sequence of the audio and video equipment and the power equipment in the external equipment inserted into the first interface is changed, the control circuit can process the audio and video signals and the power signals through two different paths of the audio and video signal processing circuit and the power processing circuit respectively, so that the technical problem of poor compatibility of the conventional universal serial bus in the prior art is solved, and the compatibility of the universal serial bus is greatly improved.
Meanwhile, the universal serial bus adapter provided by the embodiment of the application is used for supplying power to the control circuit and the audio and video signal processing circuit through the power supply processing circuit so as to ensure the normal and stable work of the control circuit and the audio and video signal processing circuit.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a USB adapter according to one embodiment of the present application;
FIG. 2 is a block diagram of a USB adapter according to one embodiment of the present application;
FIG. 3 is a block diagram of a USB adapter according to one embodiment of the present application;
FIG. 4 is a block diagram of a USB adapter according to one embodiment of the present application;
fig. 5 is a block diagram of a usb adapter system according to an embodiment of the present application.
Description of reference numerals:
10. a universal serial bus adapter; 100. a first interface; 110. an audio interface; 120. a video interface; 130. a power interface; 200. a second interface; 300. an audio/video signal processing circuit; 310. a protocol processor; 320. a signal converter; 330. a signal switcher; 400. a power supply processing circuit; 410. a first power switch; 420. a second power switch; 430. a voltage regulator; 500. a control circuit; 600. a controller; 700. a memory; 20. a universal serial bus adapter system; 21. externally connecting equipment; 22. a master device.
Detailed Description
In order to make the purpose, technical solution and advantages of the present application more apparent, a usb adapter and a usb system of the present application are further described in detail by embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The embodiment of the application provides a universal serial bus adapter, which is also called a USB adapter and can be applied to signal transmission between any host equipment and external equipment. The main equipment can be a computer, a server, a tablet, a mobile phone, a single chip microcomputer and the like, and the external equipment can be audio and video equipment, power supply equipment and the like. The following embodiments specifically describe the case where the usb adapter is applied between the host device and the external device to perform signal transmission.
Referring to fig. 1, an embodiment of the present application provides a universal serial bus adapter 10, including: the audio/video signal processing circuit comprises a first interface 100, a second interface 200, an audio/video signal processing circuit 300, a power supply processing circuit 400 and a control circuit 500.
The first interface 100 is used for connecting an external device 21, and is in signal connection with the external device 21 when in use, and the external device 21 comprises audio and video equipment and power supply equipment. The first interface 100 includes an audio/video input/output interface and a power interface. For example, in the external device 21, under the condition that an audio/video signal flows to the main device 22 through the first interface 100, the first interface 100 is an audio/video input interface; under the condition that the audio and video signals flow from the main device 22 to the external device 21, the first interface 100 is an audio and video output interface. The audio and video equipment can be earphones, a microphone, a projector, a television, a display and the like, and can generate or play audio signals or video signals or audio signals and video signals when working. The power device may be a battery, a charger, or other device with a charging function, and the power device may generate a power signal to power other electronic devices or circuits in the usb adapter 10 during operation. The first interface 100 may include a video interface, an audio interface, or an audio/video interface, the video interface may be DP, HDMI, VGA, DVI, AV, RF, DisplayPort, or the like, the audio interface may be a PS/2 interface, USB, or the like, in this embodiment, no limitation is imposed on the specific type, number, and the like of the first interface 100, and the first interface may be specifically selected according to an actual situation, and only the function of accessing and outputting audio/video signals and power signals may be implemented.
The second interface 200 is used for connecting with a main device 22, and is in signal connection with the main device 22 when in use, and the main device 22 may be a computer, a server, a tablet, a mobile phone, a single chip microcomputer, or the like. When the audio/video signal flows to the main device 22, the main device 22 converts the audio/video signal into a video picture or sound and performs visual playing. When the external device 21 includes a sound device, a headset, etc., the high-speed signal generated in the main device 22 is processed and then transmitted to the sound device or the headset, so as to be played to the user. The second interface 200 may be a VGA display interface, a USB interface, etc., and this embodiment is not particularly limited, and may be specifically selected according to actual situations.
The first end of the audio/video signal processing circuit 300 is in signal connection with the first interface 100, the second end of the audio/video signal processing circuit 300 is in signal connection with the second interface 200, and the audio/video signal processing circuit 300 is used for mutually converting an audio/video signal input through the first interface 100 and a high-speed signal input through the second interface 200, and outputting the audio/video signal through the second interface 200 and the first interface 100 respectively. In other words, the audio/video signal processing circuit 300 is configured to perform signal conversion, convert the audio/video signal input through the first interface 100 into a high-speed signal, and output the high-speed signal to the main device 22 through the second interface 200, or convert the high-speed signal input through the second interface 200 into an audio/video signal, and output the audio/video signal to the external device 21 through the first interface 100. The audio/video processing circuit may be any circuit that can realize the interconversion between the audio/video signal and the high-speed signal, and this embodiment is not particularly limited.
The first end of the power supply processing circuit 400 is electrically connected to the first interface 100, the second end of the power supply processing circuit 400 is electrically connected to the second interface 200, and the third end of the power supply processing circuit 400 is electrically connected to the power supply end of the audio/video signal processing circuit 300. The power supply processing circuit 400 is configured to supply power to the audio/video signal processing circuit 300 and the control circuit 500, so as to ensure normal operation of the audio/video signal processing circuit 300 and the control circuit 500. The power supply of the power supply processing circuit 400 is selected, for example, by controlling a power supply device in the external device 21 to supply power to the audio/video signal processing circuit 300 and the control circuit 500, or by controlling the main device 22 to supply power to the audio/video signal processing circuit 300 and the control circuit 500. Meanwhile, the power processing circuit 400 may further process the electric energy from the main device 22 or the external device 21 to supply the audio/video signal processing circuit 300 and the control circuit 500 with the electric energy, and simultaneously provide the audio/video signal processing circuit 300 and the control circuit 500 with the optimal working voltage and working current to ensure the working stability of the audio/video signal processing circuit 300 and the control circuit 500.
The control circuit 500 is respectively connected to the first interface 100 and the control terminal of the power processing circuit 400 through signals, and the control circuit 500 is used for controlling the operation of the power processing circuit 400, for example, controlling whether the power processing circuit 400 operates or not, and controlling the power supply source and the power transmission path of the power processing circuit 400. The control circuit 500 may include a microcontroller or a control chip, etc., and the implementation is not limited in any way and may be specifically selected according to actual situations.
The working principle of the universal serial bus adapter 10 provided by the embodiment of the application is as follows:
the universal serial bus adapter 10 provided in the embodiment of the present application includes an audio/video signal processing circuit 300, a power supply processing circuit 400, and a control circuit 500. When the external device 21 is connected with an audio/video device, an audio/video signal generated by the audio/video device is input to the audio/video signal processing circuit 300 through the first interface 100, the audio/video signal processing circuit 300 converts the audio/video signal to form a high-speed signal, and the high-speed signal is input to the main device 22 through the second interface 200 to be played. Meanwhile, when the external device 21 includes a device without a power supply, the control circuit 500 controls the power supply processing circuit 400 to input the electricity in the main device 22 to the audio/video signal processing circuit 300 and the control circuit 500 through the second interface 200 in sequence, so as to supply power to the audio/video signal processing circuit 300 and the control circuit 500. When the external device 21 does not include a power device, that is, there is no power signal, the power signal is input to the power processing circuit 400 through the first interface 100, and the power processing circuit 400 guides the power signal to the main device 22, the audio/video signal processing circuit 300, and the control circuit 500, and simultaneously supplies power to the main device 22, the audio/video signal processing circuit 300, and the control circuit 500. The power signal and the audio/video signal enter the second interface 200 through different processing paths, and are input to the main device 22 through the second interface 200 for playing.
An embodiment of the present application provides a universal serial bus adapter 10, which is provided with the audio/video signal processing circuit 300, the power processing circuit 400 and the control circuit 500. The control circuit 500 controls the working state of the power processing circuit 400 according to the audio/video signal and the power signal in the external device 21, and the audio/video signal and the power signal are respectively connected to the second interface 200 through the audio/video signal processing circuit 300 and the power processing circuit 400, so that the audio/video signal and the power signal in the external device 21 are separated and processed. Even when the audio and video device and the power device in the external device 21 are inserted into the first interface, the control circuit can process the audio and video signal and the power signal through two different paths of the audio and video signal processing circuit 300 and the power processing circuit 400, so that the technical problem of poor compatibility of the current universal serial bus in the prior art is solved, and the compatibility of the universal serial bus is greatly improved.
Meanwhile, the embodiment of the present application provides the usb adapter 10, through the power processing circuit 400, to the control circuit 500 and the audio/video signal processing circuit 300, so as to ensure the normal and stable operation of the control circuit 500 and the audio/video signal processing circuit 300.
In one embodiment, the control circuit 500 is further configured to perform the following functions:
under the condition that only power equipment is arranged in the external equipment 21, the power processing circuit 400 is controlled to be connected with the first interface 100 and the second interface 200, the power processing circuit 400 is also controlled to be connected with the audio and video signal processing circuit 300, and power is supplied to the main equipment 22 and the control circuit 500 through the power equipment.
Under the condition that only audio and video equipment exists in the external equipment 21, the power supply processing circuit 400 is controlled to be connected with the second interface 200 and the power supply processing circuit 400, and the main equipment 22 supplies power to the audio and video signal processing circuit 300 and the control circuit 500 through the second interface 200, so that the audio and video signal processing circuit 300 and the control circuit 500 can work normally.
Under the condition that the external device 21 simultaneously comprises an audio/video device and a power device, the power processing circuit 400 is controlled to be electrically connected with the first interface 100, the second interface 200 and the power processing circuit 400. The power supply device supplies power to the main device 22, the audio and video signal processing circuit 300 and the control circuit 500, so as to ensure the normal operation of the audio and video signal processing circuit 300 and the control circuit 500.
Referring to fig. 2, in one embodiment, the power processing circuit 400 includes: a first power switch 410, a second power switch 420, and a voltage regulator 430.
The first end of the first power switch 410 is electrically connected to the first interface 100, the second end of the first power switch 410 is electrically connected to the second interface 200, the third end of the first power switch 410 is electrically connected to the first end of the second power switch 420, and the first power switch 410 is used for switching the power supply to the audio/video signal processing circuit 300 and the control circuit 500. For example, the present embodiment includes two power supplies: when the external device 21 is connected to the main device 22, the first power switch 410 switches the connection mode to: the audio and video signal processing circuit is connected with the external device 21, the main device 22 and the audio and video signal processing circuit 300, and the external device 21 supplies power to the main device 22, the control circuit 500 and the audio and video signal processing circuit 300 so as to ensure the normal work of the audio and video signal processing circuit 300 and the control circuit 500. The first power switch 410 can be three electronic switches, three electronic switches include three connection ports, three electronic switch's of opening control end with control circuit 500 signal connection, through control circuit 500 control three electronic switch's break-make, thereby realize external device 21 main device 22 with the electricity between the audio and video signal processing circuit 300 three-terminal is connected. In this embodiment, the specific type, model, etc. of the first power switch 410 are not limited at all, and may be specifically selected or set according to actual situations, and only the requirement that the electrical connection relationship among the three ends of the first interface 100, the main device 22, and the audio/video signal processing circuit 300 can be switched is satisfied.
The first end of the second power switch 420 is electrically connected to the third end of the first power switch 410, and the second end of the second power switch 420 is electrically connected to the power source end of the audio/video signal processing circuit 300. The second power switch 420 is used for controlling the connection and disconnection between the first power switch 410 and the audio/video signal processing circuit 300. When only a power device is provided in the external device 21 and no audio/video device is connected, the control circuit 500 controls the second power switch 420 to be turned off, so as to cut off power supply to the audio/video signal processing circuit 300. The second power switch 420 may be a dual-switch electronic switch, one end of which is electrically connected to the audio/video signal processing circuit 300, and the other end of which is electrically connected to the third end of the first power switch 410. In this embodiment, the specific type and model of the second power switch 420 are not limited, and may be specifically selected according to actual situations, and only the function of controlling the electrical connection between the audio/video signal processing circuit 300 and the first power switch 410 needs to be satisfied.
The input end of the voltage regulator 430 is electrically connected to the third end of the first power switch 410, and the output end of the voltage regulator 430 is electrically connected to the power supply end of the audio/video signal processing circuit 300 and the control circuit 500, respectively. The voltage regulator 430 is configured to convert the voltage output by the first power switch 410 into a preset voltage, and provide an optimal working current and an optimal working voltage for the audio/video signal processing circuit 300 and the control circuit 500, so as to ensure optimal working performance of the audio/video signal processing circuit 300 and the control circuit 500. The voltage regulator 430 may be a DC-DC converter or any other electronic device with a voltage regulation function, and this embodiment is not particularly limited, and may be specifically selected according to actual situations.
Referring to fig. 3, in an embodiment, the audio/video signal processing circuit 300 includes: a protocol processor 310, a signal converter 320, and a signal switch 330.
The first end of the protocol processor 310 is in signal connection with the external device 21. The protocol processor 310 is configured to perform protocol processing on the audio/video signal input through the first interface 100, and form a pulse code modulation signal, that is, perform interconversion between an analog signal and a digital signal, and transmit the analog signal to the first interface, and transmit the digital signal to the signal converter 320, so as to facilitate subsequent processing of the signal converter 320 and the master device 22, and the external device 21 can recognize and receive the audio/video signal. For example, the protocol processor 310 may perform protocol processing on the DAC-OUT PCM signal and the ADC-IN PCM signal to modulate the audio pulse code to form a digital signal. The protocol processor 310 may perform processing of a PD protocol, a QC protocol, a BC1.2 protocol, and the like, and the encoding processing type and the like of the protocol processor 310 are not limited in this embodiment at all, and may be specifically selected or set according to an actual situation, and the present embodiment is not limited in this embodiment.
A first terminal of the signal converter 320 is in signal connection with a second terminal of the protocol processor 310, and a second terminal of the signal converter 320 is in signal connection with the second interface 200. The signal converter 320 is configured to convert the audio/video signal in the external device 21 into a high-speed signal, so as to facilitate analysis and processing of the main device 22. Or the high-speed signal in the main device 22 is converted into an audio/video signal, so as to facilitate the receiving and processing of the external device 21. The signal converter 320 starts the relevant protocol to work only after receiving the second detection signal and reporting the second detection signal to the host device 22 through the second interface 200, so as to implement the working stability of the usb adapter 10 according to this embodiment. The signal converter 320 may be any electronic device having a function of converting an audio/video signal and a high-speed signal, and this embodiment is not particularly limited, and may be specifically selected according to an actual situation.
The first terminal of the signal switch 330 is connected to the second terminal of the signal converter 320, the second terminal of the signal switch 330 is connected to the second interface 200, the control terminal of the signal switch 330 is connected to the control circuit 500, the control circuit 500 directly controls the signal switch 330 to operate, and the signal processing efficiency is higher. The signal switch 330 is configured to switch a transmission direction of the high-speed signal, for example, the high-speed signal output from the host device 22 is input to the signal converter 320 through the signal switch 330 and further processed into the audio/video signal, or the high-speed signal output from the signal converter 320 is output to the second interface 200 through the signal switch 330 and input to the host device 22 through the second interface 200. In this embodiment, the specific type and model of the signal switch 330 are not limited at all, and may be specifically selected or set according to actual situations, and is only limited to the function of switching the transmission direction of the high-speed signal.
In one embodiment, the usb adapter 10 further includes: controller 600, memory 700.
The memory 700 is in signal connection with the controller 600, the memory 700 is used for storing information from the host device 22 or customized information and information preset in advance such as program codes, and the memory 700 can also be used for storing other information, such as an operation state or a fault state of the control circuit 500 during operation. The memory 700 may be a memory chip, etc., and this embodiment is not particularly limited, and may be specifically selected or set according to an actual situation, and only needs to satisfy the function of realizing storage.
The controller 600 is in signal connection with the control end of the protocol processor 310, and the controller 600 is used for controlling the operation of the protocol processor 310. The controller 600 may be an MUC controller, and the customized information stored in the memory 700 is processed by the MUC controller, and is input to the protocol processor 310, and is further processed and played by the main device 22 or the external device 21. Meanwhile, the controller 600 is further in signal connection with the signal converter 320, and the controller 600 is further configured to wake up the signal converter 320 when the signal converter 320 is in signal sleep. The controller 600 may also be any chip or other electronic device with other specific control functions, and the embodiment is not limited in particular.
Referring to fig. 4, in one embodiment, the first interface 100 includes: an audio interface 110, a video interface 120, and a power interface 130.
The audio interface 110 is in signal connection with a first end of the audio/video signal processing circuit 300, and the audio interface 110 is used for connecting audio equipment, such as a headset, a sound, and the like. The audio interface 110 may be a PS/2 interface, a USB interface, or the like.
The video interface 120 is in signal connection with the first end of the audio/video signal processing circuit 300 and is used for connecting equipment, the video interface 120 can be interfaces such as DP, HDMI, VGA, DVI, AV, RF, DisplayPort, USB, and the like, and the embodiment does not limit the number, the model and the like of the video interface 120, can be specifically selected or set according to actual conditions, and only needs to satisfy the function of connecting the video equipment.
The power interface 130 is electrically connected to the first end of the power processing circuit 400, the power interface 130 is used for connecting an external power source or a charger, and the power interface 130 may be a USB interface. In this embodiment, the number, the type, and the like of the power interfaces 130 are not limited at all, and may be specifically selected or set according to actual situations.
Referring to fig. 5, an embodiment of the present application provides a usb adapter system 20, including:
as for the usb adapter 10, the beneficial effects of the usb adapter 10 are described in detail in the above embodiments, and are not described herein again.
The external device 21 is in signal connection with the first interface 100, and the external device 21 may include multiple types, such as a video device, an audio device, and a power device.
The main device 22 is in signal connection with the second interface 200, and the main device 22 may be a computer, a server, a tablet, a mobile phone, a single chip, or the like.
In one embodiment, the control circuit 500 is respectively in signal connection with the first interface 100 and the second interface 200, the first interface 100 is in signal connection with the external device 21, and the second interface 200 is in signal connection with the main device 22. The control circuit 500 determines the type of the external device 21 according to the signal inputted through the first interface 100, for example, if the master device 22 detects a first detection signal (DFP _ CC1& DFP _ CC2) in the power interface 130, it determines that a power device is connected, and inputs the first detection signal to the master device 22 through the second interface 200. The master device 22 determines that a power device is connected through the first detection signal, so as to generate a first control signal, and transmits the first control signal to the control circuit 500, and the control circuit 500 controls the operating state of the power processing circuit 400 based on the first control signal. On the contrary, if the first detection signal is not detected, it is determined that no power device is connected, and the control circuit 500 controls the power processing circuit 400 to supply power to the audio/video signal processing circuit 300 and the control circuit 500 through the main device 22.
Similarly, the first interface 100 is in signal connection with the signal converter, and when a second detection signal JD is detected in the first interface 100, the control circuit 500 transmits the second detection signal to the host device 22 through the second interface 200. The master device 22 determines that an audio/video device is accessed through the second detection signal, so as to generate a second control signal, and the control circuit 500 controls the signal converter 320 to start up through the second control signal, so as to enter a working state. Otherwise, the master device 22 determines that the non-audio video device is accessed, and controls the signal converter 320 to enter the sleep state through the control circuit 500.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A universal serial bus adapter, comprising:
the first interface is used for connecting external equipment, and the external equipment comprises audio and video equipment and power supply equipment;
the second interface is used for connecting the main equipment;
the first end of the audio and video signal processing circuit is in signal connection with the first interface, the second end of the audio and video signal processing circuit is in signal connection with the second interface, and the audio and video signal processing circuit is used for mutually converting an audio and video signal input through the first interface and a high-speed signal input through the second interface and outputting the audio and video signal and the high-speed signal through the second interface and the first interface respectively;
the first end of the power supply processing circuit is electrically connected with the first interface, the second end of the power supply processing circuit is electrically connected with the second interface, and the third end of the power supply processing circuit is electrically connected with the power supply end of the audio and video signal processing circuit;
and the control circuit is respectively in signal connection with the first interface and the control end of the power supply processing circuit and is used for controlling the power supply processing circuit to work.
2. The USB adapter as claimed in claim 1, wherein the control circuit is configured to control the USB adapter to operate in a USB mode
Under the condition that only power supply equipment is arranged in the external equipment, the power supply processing circuit is controlled to be connected with the first interface and the second interface and to be disconnected with the audio and video signal processing circuit;
under the condition that only audio and video equipment exists in the external equipment, the power supply processing circuit is controlled to be connected with the second interface and the power supply processing circuit;
and under the condition that the external equipment simultaneously comprises audio and video equipment and power supply equipment, controlling the power supply processing circuit to be connected with the first interface, the second interface and the power supply processing circuit.
3. The universal serial bus adapter as recited in claim 1 wherein said power processing circuitry comprises:
a first power switch having a first end electrically connected to the first interface and a second end electrically connected to the second interface;
and the first end of the second power supply switcher is electrically connected with the third end of the first power supply switcher, and the second end of the second power supply switcher is electrically connected with the power supply end of the audio and video signal processing circuit.
4. The universal serial bus adapter as recited in claim 3 wherein said power processing circuit further comprises:
the input end of the voltage regulator is electrically connected with the third end of the first power supply switcher, the output end of the voltage regulator is respectively electrically connected with the power supply end of the audio and video signal processing circuit and the control circuit, and the voltage regulator is used for converting the voltage output by the first power supply switcher into preset voltage.
5. The universal serial bus adapter as claimed in claim 1, wherein said audio-video signal processing circuit comprises:
the first end of the protocol processor is in signal connection with the external equipment;
and the first end of the signal converter is in signal connection with the second end of the protocol processor, the second end of the signal converter is in signal connection with the second interface, and the signal converter is used for converting the audio and video signals in the external equipment into high-speed signals.
6. The universal serial bus adapter as claimed in claim 5, wherein said audio video signal processing circuit further comprises:
the first end of the signal switcher is in signal connection with the second end of the signal switcher, the second end of the signal switcher is in signal connection with the second interface, the control end of the signal switcher is in signal connection with the control circuit, and the signal switcher is used for switching the transmission direction of the high-speed signal.
7. The universal serial bus adapter according to claim 5, further comprising:
the controller is in signal connection with the control end of the protocol processor and is used for controlling the work of the protocol processor;
the controller is also in signal connection with the signal converter and is further used for waking up the signal converter when the signal converter is in signal dormancy.
8. The universal serial bus adapter according to claim 7, further comprising:
and the memory is in signal connection with the controller.
9. The universal serial bus adapter according to claim 1, wherein said first interface comprises:
the audio interface is in signal connection with the first end of the audio and video signal processing circuit;
the video interface is in signal connection with the first end of the audio and video signal processing circuit;
and the power supply interface is electrically connected with the first end of the power supply processing circuit.
10. A universal serial bus adapter system, comprising:
the universal serial bus adapter of any of claims 1-9;
the external equipment is in signal connection with the first interface;
and the main equipment is in signal connection with the second interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209041.3A CN112115087A (en) | 2020-11-03 | 2020-11-03 | Universal serial bus adapter and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209041.3A CN112115087A (en) | 2020-11-03 | 2020-11-03 | Universal serial bus adapter and system |
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| CN112115087A true CN112115087A (en) | 2020-12-22 |
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| CN202011209041.3A Pending CN112115087A (en) | 2020-11-03 | 2020-11-03 | Universal serial bus adapter and system |
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| CN113489312A (en) * | 2021-06-29 | 2021-10-08 | 百富计算机技术（深圳）有限公司 | PD supply circuit and POS machine |
| TWI829240B (en) * | 2022-07-08 | 2024-01-11 | 和碩聯合科技股份有限公司 | Electronic device |
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