CN214042308U - Camera data return circuit structure in AR display equipment - Google Patents
Camera data return circuit structure in AR display equipment Download PDFInfo
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- CN214042308U CN214042308U CN202023059756.3U CN202023059756U CN214042308U CN 214042308 U CN214042308 U CN 214042308U CN 202023059756 U CN202023059756 U CN 202023059756U CN 214042308 U CN214042308 U CN 214042308U
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Abstract
The utility model relates to a camera data passback circuit structure in AR display device, include: the signal processor is connected with the camera module, and the camera data acquired by the camera module is converted into USB signals from MIPI signals through the signal processor; the USB expander is connected with the signal processor; and the PD controller is connected with the Type-c interface, and the PD controller transmits the USB signal formed by converting the signal processor to the Type-c interface. The utility model discloses a MIPI signal conversion that the signal processor who sets up gathered the camera module becomes the USB signal, is switching to through the USB expander and walks a route with other USB signals, reaches the function of sparingly walking the line, uses the data line of limited quantity to realize more functions, has reduced the signal line quantity of AR display device department, reaches simple light purpose.
Description
Technical Field
The utility model relates to a technical field of AR display device refers in particular to a camera data passback circuit structure among AR display device.
Background
At present, in order to realize the perception experience of a user, a plurality of complex functions are integrated on AR (Augmented Reality) display equipment, and due to the increase of devices, data signals between external equipment such as a mobile phone and the AR display equipment are also increased sharply, so that the number of signal lines between the external equipment and the AR display equipment is also increased, in the prior art, most of the signal lines use custom lines of manufacturers, the custom lines are integrally hardened due to the large number of the signal lines, on one hand, the difficulty is increased for wiring, on the other hand, the weight of the AR display equipment is also increased, in addition, the AR display equipment often uses high-speed signals, the stability of the custom lines is poor when the high-speed signals are transmitted, particularly, for MIPI signals collected by a camera module on the AR display equipment, when the custom lines are used for transmission, the stability is poor, the display effect after receiving by the mobile phone end is directly influenced, affecting the user's perception experience.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a camera data passback circuit structure among AR display device, solve the wiring difficulty that current customization line exists big, increase the problem of the relatively poor etc. of equipment weight and signal stability.
The technical scheme for realizing the purpose is as follows:
the utility model provides a camera data passback circuit structure among AR display device locates on AR display device's the circuit board for camera data transmission to Type-c interface that gathers the camera module, passback circuit structure includes:
the signal processor is connected with the camera module, and the camera data acquired by the camera module is converted into USB signals from MIPI signals through the signal processor;
the USB expander is connected with the signal processor; and
and the PD controller is connected with the Type-c interface, and the PD controller transmits the USB signal converted and formed by the signal processor to the Type-c interface.
The utility model discloses an effectual Type-c interface that has utilized setting on the AR display device of camera data passback circuit structure, the MIPI signal conversion who gathers through the signal processor who sets up the camera module becomes the USB signal, switch to through the USB expander and walk a route with other USB signals, reach the function of sparingly walking the line, use the data line of limited quantity to realize more functions, reduced the signal line quantity of AR display device department, reached simple light purpose. The Type-c interface is good in stability and compatibility, the problem that the stability of a customization line is poor in the prior art is solved, and good perception experience can be brought to a user.
The utility model discloses the camera data passback circuit structure in the AR display device is further improved in that, the signal processor is provided with an MIPI input pin and a USB output pin;
the MIPI input pin is connected with a camera interface of the camera module;
and the USB output pin is connected with a corresponding interface on the USB expander through a blocking capacitor and a common mode inductor.
The utility model discloses the camera data passback circuit structure in the AR display device is further improved in that the signal processor is also provided with a USB input pin;
the USB expander is provided with a first signal main port, a first conversion slave port and a second conversion slave port, and the first signal main port is in conversion connection with the first conversion slave port and the second conversion slave port;
the first conversion slave port is connected with the USB input pin through a blocking capacitor and a common mode inductor;
the first signal main port is connected with a corresponding signal pin on the Type-c interface through a 0 ohm resistor.
The utility model discloses camera data passback circuit structure's further improvement lies in among AR display device, the last signal connector of PD controller through blocking direct electric capacity with the difference walk the line the form with the signal pin that corresponds is connected on the Type-c interface.
The utility model discloses the camera data passback circuit structure in the AR display device is further improved in that the PD controller is provided with a detection signal connector;
and the detection signal connector is connected with a corresponding signal pin on the Type-c interface through a 0 ohm resistor.
The utility model discloses camera data passback circuit structure's further improvement lies in among AR display device, signal processor is equipped with the audio signal connector.
The utility model discloses the camera data passback circuit structure in the AR display device is further improved in that the PD controller is provided with a power signal connector;
and the power signal connector is connected with a corresponding signal pin on the Type-c interface.
The utility model discloses camera data passback circuit structure's further improvement lies in among AR display device, the USB expander is equipped with the extension interface.
Drawings
Fig. 1 is a schematic diagram of the camera data return circuit structure in the AR display device of the present invention.
Fig. 2 is a circuit diagram of the interface in the AR display device of the present invention.
Fig. 3 is a circuit diagram of the signal processor in the camera data return circuit structure of the AR display device of the present invention.
Fig. 4 is a circuit diagram of the USB expander in the camera data return circuit structure of the AR display device of the present invention.
Fig. 5 is a circuit diagram of the PD controller in the camera data return circuit structure of the AR display device of the present invention.
Fig. 6 is the circuit diagram of the Type-c interface in the AR display device of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 1, the utility model provides a camera data passback circuit structure in AR display device for solve among the prior art adopt the multiple data signal among the customization line transmission AR display device and the wiring difficulty that exists, increase AR end weight and the poor problem of transmission stability. The utility model discloses a passback circuit structure converts the MIPI signal conversion that the camera module was gathered to the USB signal, and then has utilized the Type-c interface realization signal transmission of the setting on the AR display device, let camera data signal's transmission and other USB signals walk a route to reach the purpose of sparingly walking the line, reduced interconnection signal line between outside settings such as AR display device and cell-phone, reach simple light purpose, and the stability of Type-c interface is good, compatibility is good too. The camera data return circuit structure in the AR display device of the present invention is described below with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of a camera data return circuit structure in an AR display device of the present invention is shown. The camera data return circuit structure in the AR display device of the present invention is described with reference to fig. 1.
As shown in fig. 1, the utility model discloses a camera data passback circuit structure 20 in AR display device locates on AR display device's the circuit board for camera data transmission to Type-C interface 11 department that the camera module was gathered, this passback circuit structure 20 includes signal processor 21, USB expander 22 and PD controller 23, and signal processor 21 wherein is connected with the camera module for receive the camera data that the camera module was gathered and is formed. Preferably, the AR display device is provided with a camera module as a video camera for shooting and forming video data, and the video data is in the form of MIPI signals. The signal processor 21 is configured to convert the camera data collected by the camera module from the MIPI signal to the USB signal. The USB expander 22 is connected to the signal processor 21, the USB expander 22 is further connected to the PD controller 23, the USB signal converted by the signal processor 21 is transmitted to the PD controller 23 through the USB expander 22, the PD controller 23 is connected to the Type-c interface, and the PD controller 23 transmits the received USB signal to the Type-c interface. The AR display device may be connected with an external device, such as a mobile phone, through a Type-c interface, and then transmit the USB signal to the external device.
Specifically, the camera module of the AR display device transmits the camera data acquired by the MIPI signal to the signal processor 21, converts the MIPI signal into a USB signal by the signal processor 21, transmits the USB signal to the USB extender 22, transmits the USB signal to the PD controller 23, transmits the PD signal to the Type-c interface, and finally transmits the PD signal to external devices such as a mobile phone, thereby realizing data receipt. The signal processor 21, the USB expander 22 and the PD controller 23 are all integrated on a circuit board of the AR display device.
In a specific embodiment of the present invention, as shown in fig. 1 and 2, a camera interface 10 is disposed on the camera module, and the camera interface 10 is provided with an MIPI signal interface 101; referring to fig. 3, the signal processor 21 is connected to the camera interface 10, and specifically, the signal processor 21 is provided with an MIPI input pin 211, and the MIPI input pin 211 is connected to the MIPI signal interface 101, so that the MIPI signal collected by the camera module is input to the signal processor 21 through the MIPI signal interface 101 and the MIPI input pin 211 for signal conversion. The signal processor 21 is further provided with a USB output pin 213, the USB output pin 213 is used for outputting a USB signal, and the signal processor 21 converts the MIPI signal input by the MIPI input pin 211 into a USB signal and outputs the USB signal from the USB output pin 213. The USB output pin 213 is connected to a corresponding interface on the USB expander 22 through a dc blocking capacitor and a common mode inductor, and the USB signal is transmitted to the USB expander 22 through the USB output pin 213.
Preferably, the USB signal output pin 213 is a USB3.0 signal interface for transmitting USB3.0 signals. The signal processor 21 converts the MIPI signal into a USB3.0 signal and outputs it from the USB signal output pin 213.
Further, as shown in fig. 4, the USB expander 22 is provided with a second signal slave port 224, the second signal slave port 224 is a USB3.0 signal interface, and the second signal slave port 224 is connected to the USB signal output pin 213 and receives the USB3.0 signal converted by the signal processor 21. The USB expander 22 further includes a third conversion main port 225 and a fourth conversion main port 226, and the second signal slave port 224 is connected to the third conversion main port 225 and the fourth conversion main port 226, and transmits the received USB3.0 signal to the third conversion main port 225 and the fourth conversion main port 226. Referring to fig. 5, the third switching main port 225 is connected to the USB signal connection port 231 on the PD controller 23 to transmit the USB3.0 signal to the PD controller 23, and further to the Type-c interface 11 through the PD controller 23, and further to the external device connected to the Type-c interface 11.
In a specific embodiment of the present invention, as shown in fig. 3, the signal processor 21 is further provided with a USB input pin 212, and the USB input pin 212 is a USB2.0 signal interface; referring to fig. 4, the USB expander 22 is provided with a first signal main port 221, a first switching slave port 222 and a second switching slave port 223, the first switching slave port 222 is connected to the USB input pin 212 through a 0 ohm resistor and a common mode inductor, and the first signal main port 221 is connected to a corresponding signal pin on the Type-c interface 11 through a 0 ohm resistor. Referring to fig. 6, the Type-c interface 11 is provided with a USB2.0 signal pin 113, the USB2.0 signal pin 113 is connected to the first signal main port 221, and is configured to transmit a USB2.0 signal to the first signal main port 222, the first signal main port 221 converts the USB2.0 signal into a first conversion slave port 222 and a second conversion slave port 223, and transmits the signal to the signal processor 21 through the first conversion slave port 222, so as to implement communication between an external device and the signal processor 21, and is mainly used to implement functions such as chip online upgrade.
Further, the PD controller 23 is provided with a USB2.0 signal connection port 235, and USB2.0 signal pins 227 and 228 are connected to the USB2.0 signal connection port 235.
Preferably, as shown in fig. 1, the second switching slave port 223 and the fourth switching slave port 226 are both expansion interfaces for implementing expansion functions, and can be connected to other devices 30.
Preferably, the signal processor selects an OV580 chip for converting the MIPI signal transmitted from the camera into the USB3.0 signal transmitted through the Type-c interface, and the OV580 chip also supports a powerful audio interface and other general interfaces for controlling the camera.
The signal processor is provided with an audio signal connector and can receive external sound through the digital mic module.
In a specific embodiment of the present invention, as shown in fig. 5, the signal connection port 232 on the PD controller 23 is connected to the corresponding signal pin on the Type-c interface 11 in the form of differential wiring through the blocking capacitor. Specifically, as shown in fig. 6, the Type-c interface 11 is provided with a first USB3.0 signal pin 111 and a second USB3.0 signal pin 112, and the first USB3.0 signal pin 111 and the second USB3.0 signal pin 112 are connected to the signal connection port 232 on the PD controller 23 in the form of differential routing through a dc blocking capacitor, so as to transmit a high-speed signal, and the signal routing needs to control 90 ohm impedance due to the particularity of the signal.
In one embodiment of the present invention, as shown in fig. 5, the PD controller 23 is provided with a detection signal connector 233; the detection signal connection port 233 is connected to a corresponding signal pin on the Type-c interface 11 via a 0 ohm resistor. Specifically, as shown in fig. 6, the Type-c interface 11 is provided with a CC pin 114, the CC pin 114 is connected to the detection signal interface 233 through a 0 ohm resistor, and the transmitted signal is used for detecting the insertion of the AR display device and detecting the Type of the Type-c insertion and insertion device.
In one embodiment of the present invention, as shown in fig. 5, the PD controller 23 is provided with a control connection port 234; the control connection port 234 is connected to a corresponding signal pin on the Type-c interface 11 in a differential direction by a dc blocking capacitor. Specifically, as shown in fig. 6, the Type-c interface 11 is provided with a control pin 115, and the control pin 115 is connected to the control connection port 234 of the PD controller 23 in the form of differential routing through a dc blocking capacitor, so as to be used for controlling and identifying the AR display device, and the impedance of 100 ohms needs to be controlled when the routing is performed due to the particularity of the signal.
In one embodiment of the present invention, as shown in fig. 5, the PD controller 23 is provided with a power signal connection port 236; the power signal connectors 236 are connected to corresponding signal pins on the Type-c interface 11. Specifically, as shown in fig. 6, the Type-c interface 11 is provided with a power pin 116, the power pin 116 is connected to the power signal connection port 236, and the external device supplies power to the PD controller 23 and the chip on the AR display device.
The utility model discloses a camera data passback circuit structure in AR display device, through the MIPI signal conversion that gathers the camera module for the USB3.0 signal of the normal transmission of Type-c interface, rethread USB expander switches to same route, has practiced thrift the line of walking, makes the data line of limited quantity realize more functions.
The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.
Claims (8)
1. The utility model provides a camera data passback circuit structure among AR display device, locates on AR display device's the circuit board for camera data transmission to Type-c interface that gathers the camera module, its characterized in that, passback circuit structure includes:
the signal processor is connected with the camera module, and the camera data acquired by the camera module is converted into USB signals from MIPI signals through the signal processor;
the USB expander is connected with the signal processor; and
and the PD controller is connected with the Type-c interface, and the PD controller transmits the USB signal converted and formed by the signal processor to the Type-c interface.
2. The AR display device camera data backhaul circuit architecture of claim 1, wherein said signal processor is provided with a MIPI input pin and a USB output pin;
the MIPI input pin is connected with a camera interface of the camera module;
and the USB output pin is connected with a corresponding interface on the USB expander through a blocking capacitor and a common mode inductor.
3. The camera data backhaul circuit structure of claim 1, wherein said signal processor further comprises a USB input pin;
the USB expander is provided with a first signal main port, a first conversion slave port and a second conversion slave port, and the first signal main port is in conversion connection with the first conversion slave port and the second conversion slave port;
the first conversion slave port is connected with the USB input pin through a blocking capacitor and a common mode inductor;
the first signal main port is connected with a corresponding signal pin on the Type-c interface through a 0 ohm resistor.
4. The camera data backhaul circuit structure of claim 1, wherein a signal connection port on the PD controller is connected to a corresponding signal pin on the Type-c interface in the form of a differential trace via a dc blocking capacitor.
5. The camera data backhaul circuit structure of an AR display device according to claim 1, wherein said PD controller is provided with a detection signal connection port;
and the detection signal connector is connected with a corresponding signal pin on the Type-c interface through a 0 ohm resistor.
6. The structure of camera data backhaul circuit in AR display device according to claim 1, wherein said signal processor is provided with an audio signal connection port.
7. The camera data backhaul circuit structure of claim 1, wherein said PD controller is provided with a power signal connection port;
and the power signal connector is connected with a corresponding signal pin on the Type-c interface.
8. The camera data backhaul circuit structure of claim 1, wherein said USB extender is provided with an extension interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023059756.3U CN214042308U (en) | 2020-12-17 | 2020-12-17 | Camera data return circuit structure in AR display equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023059756.3U CN214042308U (en) | 2020-12-17 | 2020-12-17 | Camera data return circuit structure in AR display equipment |
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| Publication Number | Publication Date |
|---|---|
| CN214042308U true CN214042308U (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023059756.3U Active CN214042308U (en) | 2020-12-17 | 2020-12-17 | Camera data return circuit structure in AR display equipment |
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| CN (1) | CN214042308U (en) |
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- 2020-12-17 CN CN202023059756.3U patent/CN214042308U/en active Active
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