USB camera externally connected with mobile phone

Abstract

The utility model relates to a universal serial bus (USB) camera externally connected with a mobile phone. The USB camera comprises a camera, a main control chip and a conversion module, the output end of the camera is connected with the input end of the main control chip, and collected images are transmitted to the main control chip; the output end of the main control chip is connected with the input end of the conversion module, and the main control chip performs video conversion on images and transmits the converted images to the conversion module; and the conversion module is in communication connection with a mobile phone USB, converts input interface data into Ethernet interface data, then converts the Ethernet interface data into USB interface data, and transmits the USB interface data to a mobile phone end. According to the USB camera externally connected with the mobile phone, an MFI authentication chip does not need to be used, display can be carried out through Android and iPhone, and the universality is good. Different connection modules do not need to be set for the Android mobile phone and the iPhone respectively, the number of hardware modules is reduced, and cost is reduced. And the external camera can be realized by directly accessing the mobile phone, so that the device is simple, practical and convenient for consumers to use.

Description

Technical Field

[0001] The utility model relates to the technical field of digital hardware equipment, in particular to a USB camera externally connected to a mobile phone. Background Art

[0002] The digital camera function of a mobile phone refers to whether the mobile phone can take still pictures or short videos through a built-in or external digital camera. As a new additional function of the mobile phone, the digital camera function of the mobile phone has developed rapidly. The original camera of the mobile phone can meet most of the daily shooting needs of users, but for some special shooting needs, such as multi-angle shooting, special lens requirements, etc., on the basis of the original camera of the mobile phone, an external camera can be used for shooting like a PC. However, the external cameras of such mobile phones on the market can only be connected to Android phones through OTG. If it is an Apple phone, an MFI-certified chip is required to connect through a specific protocol. The existing connection method is not flexible enough and cannot achieve universal connection of mobile phone systems. Utility Model Content

[0003] Based on this, it is necessary to provide a USB camera for an external mobile phone to solve the problem that the existing mobile phone external USB camera can only be connected to the mobile phone through the MFI certification chip.

[0004] This embodiment proposes a USB camera that is externally connected to a mobile phone, including a camera, a main control chip, and a conversion module; the output end of the camera is connected to the input end of the main control chip, and the collected image is transmitted to the main control chip; the output end of the main control chip is connected to the input end of the conversion module, and the image is converted into video and transmitted to the conversion module; the conversion module is connected to the mobile phone USB communication, converts the collected video data into Ethernet interface data, and then converts it into USB interface data, and transmits it to the mobile phone.

[0005] Furthermore, the conversion module includes an RMII interface to Ethernet physical layer chip and an Ethernet to USB interface chip; the output end of the main control chip is connected to the input end of the RMII interface to Ethernet physical layer chip, the output end of the RMII interface to Ethernet physical layer chip is connected to the input end of the Ethernet to USB interface chip, and the output end of the Ethernet to USB interface chip is connected to the mobile phone USB communication.

[0006] Furthermore, the main control chip is connected to the RMII interface to Ethernet physical layer chip via an RMII interface, and the RMII interface to Ethernet physical layer chip is connected to the Ethernet to USB interface chip via an Ethernet interface.

[0007] Furthermore, the RMII interface to Ethernet physical layer chip includes a chip model RTL8201F.

[0008] Furthermore, the Ethernet to USB interface chip includes a chip model RTL8152B.

[0009] Furthermore, the USB camera connected to the external mobile phone also includes a DC power chip, which transforms the input DC power to power the camera, the main control chip and the conversion module.

[0010] Furthermore, the power supply input terminal of the DC power supply chip is connected to the USB interface, and the USB interface provides DC input.

[0011] Furthermore, the camera is also provided with an LED fill light.

[0012] The USB camera for connecting to a mobile phone provided by the utility model does not need to pass the MFI certification chip, and can be displayed by both Android and Apple mobile phones, and has good versatility. There is no need to set different connection modules for Android mobile phones and Apple mobile phones respectively, which reduces the number of hardware modules and reduces costs. It can realize the external camera by directly connecting to the mobile phone, which is simple, practical and convenient for consumers to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the principle of an embodiment of a USB camera connected to a mobile phone of the utility model;

[0014] Figure 2 This is a schematic diagram of the module principle of an embodiment of a USB camera externally connected to a mobile phone of the utility model;

[0015] Figure 3 The utility model is a circuit diagram of an embodiment of a USB camera externally connected to a mobile phone.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1. Camera; 2. Main control chip; 3. RMII interface to Ethernet physical layer chip; 4. Ethernet to USB interface chip; 5. DC power chip. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the specific details described below are only part of the embodiments of the utility model, and the utility model can also be implemented in many other embodiments different from those described here. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0021] In one embodiment, see Figure 1 To Attachment Figure 3 As shown, a USB camera connected to a mobile phone includes a camera 1, a main control chip 2, and a conversion module; the output end of the camera 1 is connected to the input end of the main control chip 2, and the collected image is transmitted to the main control chip 2; the output end of the main control chip 2 is connected to the input end of the conversion module, and the image is converted into a video and transmitted to the conversion module; the conversion module is connected to the mobile phone USB communication, and the collected video data is converted into Ethernet interface data, and then converted into USB interface data, and transmitted to the mobile phone. Among them, the camera 1 of this embodiment can be a USB lens or a CMOS lens.

[0022] The USB camera for connecting to a mobile phone provided by the utility model does not need to pass the MFI certification chip, and can be displayed by both Android and Apple mobile phones, and has good versatility. There is no need to set different connection modules for Android mobile phones and Apple mobile phones respectively, which reduces the number of hardware modules and reduces costs. It can realize the external camera by directly connecting to the mobile phone, which is simple, practical and convenient for consumers to use.

[0023] See attached Figure 2As shown, in the embodiment of the utility model, the conversion module includes an RMII (Simplified Media Independent Interface) interface to Ethernet physical layer chip and an Ethernet to USB interface chip 4; the output end of the main control chip 2 is connected to the input end of the RMII interface to Ethernet physical layer chip 3, the output end of the RMII interface to Ethernet physical layer chip 3 is connected to the input end of the Ethernet to USB interface chip 4, and the output end of the Ethernet to USB interface chip 4 is connected to the mobile phone USB communication.

[0024] Based on this embodiment, the main control chip 2 is connected to the RMII interface to Ethernet physical layer chip 3 via the RMII interface, and the RMII interface to Ethernet physical layer chip 3 is connected to the Ethernet to USB interface chip 4 via the Ethernet interface.

[0025] Refer to the attached Figure 3 As shown, in this embodiment, further, the RMII interface to Ethernet physical layer chip 3 includes a chip of model RTL8201F and its peripheral circuits, the Ethernet to USB interface chip 4 includes a chip of model RTL8152B and its peripheral circuits, and the main control chip 2 includes a chip of model TXW81X and its peripheral circuits. Of course, the technical solution of the utility model can also use other chip models with similar functions, which are not limited to the description in this embodiment.

[0026] On the basis of this embodiment, further, the USB camera of the external mobile phone also includes a DC power chip 5, which transforms the input DC power to power the camera 1, the main control chip 2 and the conversion module. The power input end of the DC power chip 5 is connected to the USB interface, and the USB interface provides DC input. The DC power chip 5 converts the input DC5V input into a DC3.3V output, and uses DC3.3V to power the main control chip 2 and the conversion module.

[0027] In this embodiment, the camera 1 is also provided with an LED fill light for fill lighting in daily shooting.

[0028] This solution is to connect the USB camera of the mobile phone, which can display both Android and Apple phones and is compatible with Apple phones. The camera component is used for smart phones, which is lightweight and does not require a separate power supply. It only needs to use the RMII interface, which is simple and practical and easy for consumers to use.

[0029] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications, substitutions and improvements can be made without departing from the concept of the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be based on the claims.

Claims

1. A USB camera connected to a mobile phone, characterized in that: It includes a camera, a main control chip, and a conversion module; the output end of the camera is connected to the input end of the main control chip to transmit the collected image to the main control chip; the output end of the main control chip is connected to the input end of the conversion module to perform video conversion on the image and transmit it to the conversion module; the conversion module is connected to the mobile phone USB communication to convert the collected video data into Ethernet interface data, and then into USB interface data, and transmit it to the mobile phone.

2. The USB camera for connecting to a mobile phone according to claim 1, characterized in that: The conversion module includes an RMII interface to Ethernet physical layer chip and an Ethernet to USB interface chip; the output end of the main control chip is connected to the input end of the RMII interface to Ethernet physical layer chip, the output end of the RMII interface to Ethernet physical layer chip is connected to the input end of the Ethernet to USB interface chip, and the output end of the Ethernet to USB interface chip is connected to the mobile phone USB communication.

3. The USB camera for connecting to a mobile phone according to claim 2, characterized in that: The main control chip is connected to the RMII interface to Ethernet physical layer chip via an RMII interface, and the RMII interface to Ethernet physical layer chip is connected to the Ethernet to USB interface chip via an Ethernet interface.

4. The USB camera for connecting to a mobile phone according to claim 3, characterized in that: The RMII interface to Ethernet physical layer chip includes a chip model RTL8201F.

5. The USB camera for connecting to a mobile phone according to claim 3, characterized in that: The Ethernet to USB interface chip includes a chip model RTL8152B.

6. The USB camera for connecting to a mobile phone according to claim 1, characterized in that: It also includes a DC power chip, which transforms the input DC power to supply power to the camera, the main control chip and the conversion module.

7. The USB camera for connecting to a mobile phone according to claim 6, characterized in that: The power supply input end of the DC power supply chip is connected to the USB interface, and the USB interface provides DC input.

8. The USB camera for connecting to a mobile phone according to claim 1, characterized in that: The camera is also provided with an LED fill light.

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