CN110740281B - MIPI signal transmission equipment, system and electronic equipment - Google Patents
MIPI signal transmission equipment, system and electronic equipment Download PDFInfo
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- CN110740281B CN110740281B CN201910960348.8A CN201910960348A CN110740281B CN 110740281 B CN110740281 B CN 110740281B CN 201910960348 A CN201910960348 A CN 201910960348A CN 110740281 B CN110740281 B CN 110740281B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
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Abstract
The present disclosure relates to a MIPI signal transmission apparatus, system and electronic apparatus, the MIPI signal transmission apparatus includes: the mobile industry processor interface comprises a Mobile Industry Processor Interface (MIPI) chip and a first USB interface connected with the MIPI chip; the MIPI chip is used for generating MIPI signals and transmitting the MIPI signals through the first USB interface. Therefore, the MIPI signal is transmitted through the USB interface, and the long-distance transmission of the MIPI signal can be realized.
Description
Technical Field
The present disclosure relates to the field of signal transmission technologies, and in particular, to an MIPI signal transmission device, a system, and an electronic device.
Background
The MIPI (Mobile Industry Processor Interface) is an open standard and specification established for Mobile application processors by the MIPI alliance, which defines a set of Interface standards to standardize interfaces inside Mobile devices, such as cameras, display screens, base bands, radio frequency interfaces and the like, thereby increasing design flexibility, and simultaneously reducing device cost, design complexity, power consumption, EMI (electromagnetic interference) and the like.
With the wide application of the MIPI interface, a connector for transmitting MIPI signals also comes along, but the existing connector has more defects: the structure strength is weak, the structure is easy to damage in the using process, and the requirement of transmitting MIPI signals in a long distance is difficult to meet.
Disclosure of Invention
In order to solve the above problems, the present disclosure provides an MIPI signal transmission apparatus, a system, and an electronic apparatus.
In a first aspect, the present disclosure provides an MIPI signal transmission apparatus, including: the USB interface comprises an MIPI chip and a first USB interface connected with the MIPI chip; the MIPI chip is used for generating MIPI signals and transmitting the MIPI signals through the first USB interface.
Optionally, the MIPI chip includes a MIPI interface, and the MIPI chip is connected to the first USB interface through the MIPI interface.
Optionally, the MIPI chip includes a clock channel and a data channel, and the first USB interface includes a high-speed signal channel and an ultra-high-speed data channel; a clock channel of the MIPI chip is connected with a high-speed signal channel of the first USB interface; and the data channel of the MIPI chip is connected with the ultra-high-speed data channel of the first USB interface.
Optionally, in a case that the two auxiliary channels of the first USB interface are connected, the polarities of the preset levels of the two auxiliary channels of the first USB interface are opposite.
In a second aspect, the present disclosure provides an MIPI signal transmission system, including: the mobile terminal comprises MIPI signal transmission equipment and MIPI signal receiving equipment which is in communication connection with the MIPI signal transmission equipment; the MIPI signal transmitting apparatus comprises the MIPI signal transmitting apparatus of the first aspect; the MIPI signal receiving equipment comprises a second USB interface; the MIPI signal transmission equipment is connected with a second USB interface of the MIPI signal receiving equipment through the first USB interface, and MIPI signals are transmitted to the MIPI signal receiving equipment through the first USB interface and the second USB interface.
Optionally, the first USB interface and the second USB interface are any one of a USB male interface and a USB female interface.
Optionally, the MIPI signal receiving device further includes a receiving chip, and the receiving chip is connected to the second USB interface; the receiving chip is configured to determine a connection mode of the first USB interface and the second USB interface, and receive, through the second USB interface, the MIPI signal transmitted by the MIPI signal transmission device through the first USB interface if the connection mode is forward connection.
Optionally, the MIPI signal receiving apparatus further includes: the relay chip is connected with the second USB interface and the receiving chip; the receiving chip is further configured to send a conversion instruction to the relay chip if the connection mode is reverse connection; the relay chip is used for receiving the conversion instruction sent by the receiving chip and converting the MIPI signal received by the receiving chip according to the conversion instruction.
Optionally, in a case that the two auxiliary channels of the first USB interface are connected, the polarities of the preset levels of the two auxiliary channels of the first USB interface are opposite.
In a third aspect, the present disclosure provides an electronic device including the MIPI signal transmission system of the second aspect.
Through above-mentioned technical scheme, the MIPI signal transmission equipment that this disclosure provided includes: the USB interface comprises an MIPI chip and a first USB interface connected with the MIPI chip; the MIPI chip is used for generating MIPI signals and transmitting the MIPI signals through the first USB interface. Therefore, the MIPI signal is transmitted through the USB interface, and the long-distance transmission of the MIPI signal can be realized.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic structural diagram of an MIPI signal transmission apparatus provided in an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an MIPI signal transmission system according to an embodiment of the present disclosure;
FIG. 3 is a pin diagram of a male USB interface according to an embodiment of the present disclosure;
fig. 4 is a pin diagram of a USB female connector according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another MIPI signal transmission system according to an embodiment of the present disclosure;
fig. 6 is a pin diagram of an MIPI interface provided in an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a third MIPI signal transmission system according to an embodiment of the present disclosure.
Description of the reference numerals
100 MIPI signal transmission equipment 101 MIPI chip
102 first USB interface 200 MIPI signal transmission system
201 MIPI signal transmission equipment 202 MIPI signal receiving equipment
2011 MIPI chip 2012 first USB interface
2021 second USB interface 2022 receiving chip
2023 Relay chip
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
First, explain this disclosed application scene, this disclosure can be applied to MIPI signal long distance transmission's scene, for example unmanned aerial vehicle, in order to satisfy different shooting demands, need install external camera for unmanned aerial vehicle to make things convenient for the user to change the camera of different grade type according to different shooting demands, and in order to guarantee equipment to image data's processing speed, need transmit the MIPI image data that the camera was shot to unmanned aerial vehicle. At present, a chip provided with an MIPI interface can be connected with a motherboard and other devices in a Flexible Printed Circuit (FPC), a Flexible Flat Cable (FFC), a Coax (Coax) or the like manner, but the FPC, the FFC and the Coax have weak structural strength and are easily damaged in a use process; in addition, the FPC and the FFC support only short-distance transmission and can only be used for connection in equipment, and although the Coax can support long-distance transmission, the processing difficulty is high, and the price of the connector and the wire is also high.
In order to solve the above problems, the present disclosure provides a MIPI signal transmission apparatus, a system and an electronic device, wherein the MIPI signal transmission apparatus includes a MIPI chip and a first USB interface connected to the MIPI chip, and after the MIPI chip generates a MIPI signal, the MIPI signal is transmitted through the first USB interface, so that long-distance transmission of the MIPI signal can be achieved.
The present disclosure is illustrated below with reference to specific examples.
Fig. 1 is a schematic structural diagram of a MIPI signal transmission apparatus provided in an embodiment of the present disclosure, and as shown in fig. 1, the MIPI signal transmission apparatus 100 includes: a MIPI chip 101, and a first USB interface 102 connected to the MIPI chip 101;
the MIPI chip 101 is configured to generate a MIPI signal and transmit the MIPI signal through the first USB interface 102.
The MIPI chip 101 can be a chip of a camera module provided with an MIPI interface, and also can be a chip of a display screen driven by MIPI signals, and the USB can be USB Type-C, so that the method is not limited by the disclosure.
The MIPI chip 101 may include a clock channel, a data channel, and an auxiliary channel, where the clock channel is used to transmit a differential clock signal, including MIPI CLK +/, the data channel is used to transmit MIPI data, including MIPI D1+/, MIPID2+/, MIPI D3+/, MIPI D4+/, and the auxiliary channel is a spare channel, including SBU1 and SBU 2; the first USB interface 102 includes a high speed signal channel and a super speed data channel, wherein the high speed signal channel may be a USB2.0 high speed data channel, the super speed data channel may be a USB3.0 super speed data channel, the high speed signal channel is used for transmitting differential clock signals including D +/-, and the super speed data channel is used for transmitting differential data signals including SSTX1+/-, SSTX2+/-, SSRX1+/-, SSRX2 +/-.
The MIPI chip 101 includes a MIPI interface and is connected to the first USB interface 102 through the MIPI interface, where a clock channel of the MIPI chip 101 may be connected to a high-speed signal channel of the first USB interface 102, and a data channel of the MIPI chip 101 may be connected to a super-speed data channel of the first USB interface 102.
It should be noted that, besides the clock channel and the data channel of the MIPI chip 101, other channels of the MIPI chip 101 may also be connected to the first USB interface 102, such as I2C (Inter Integrated Circuit), a power pin, a ground pin, and the like. Here, the other channels connected to the first USB interface 102 may be preset channels determined according to the type of the MIPI chip 101. For example, for a display screen module, only a clock channel and a data channel are generally required to be connected; for the camera module, besides the clock channel and the data channel, SCL/SDA of I2C of the camera module can be connected to CC1/2 or SBU1/2 of the first USB interface 102; the VBUS of the camera module may be connected to the POWER of the first USB interface 102, and the GND of the camera module may be connected to the GND of the first USB interface 102.
In addition, in the case where the two auxiliary channels of the first USB interface 102 are connected, the polarities of the preset levels of the two auxiliary channels of the first USB interface 102 are opposite. Here, the SBU2 of the first USB interface 102 is connected at a level opposite to the polarity of the preset level of the SBU1, that is, the SBU2 is connected at a high level when the preset level of the SBU1 is a low level, and the SBU2 is connected at a low level when the preset level of the SBU1 is a high level. Thus, the MIPI signal receiving apparatus may determine the connection state of the MIPI signal transmitting apparatus 100 and the MIPI signal receiving apparatus according to the polarity of the current level of the SBU1 of the USB interface of the receiving end, indicate that the connection state of the MIPI signal transmitting apparatus 100 and the MIPI signal receiving apparatus is connected if the polarity of the current level of the SBU1 of the USB interface of the receiving end is opposite to the polarity of the preset level of the SBU1, and indicate that the connection state of the MIPI signal transmitting apparatus 100 and the MIPI signal receiving apparatus is disconnected if the polarity of the current level of the SBU1 of the USB interface of the receiving end is the same as the polarity of the preset level of the SBU 1.
Illustratively, when the MIPI signal transmitting apparatus 100 is connected to the MIPI signal receiving apparatus, the current level of the SBU1 of the first USB interface 102 is made to coincide with the level of the SBU2, that is, the current level of the SBU1 is opposite to the polarity of the preset level of the SBU1, at this time, the current level of the SBU1 of the USB interface of the MIPI signal receiving apparatus is also opposite to the polarity of the preset level of the SBU 1; when the MIPI signal transmission apparatus 100 is disconnected from the MIPI signal reception apparatus, the current level of the SBU1 of the first USB interface 102 has the same polarity as the preset level of the SBU1, so that the current level of the SBU1 of the USB interface of the MIPI signal reception apparatus also has the same polarity as the preset level of the SBU 1.
By adopting the equipment, after the MIPI chip generates the MIPI signal, the MIPI signal is transmitted through the first USB interface, the long-distance transmission of the MIPI signal can be realized, the structural strength of the USB interface is good, and the MIPI signal is not easy to damage in the using process.
Fig. 2 is a schematic structural diagram of an MIPI signal transmission system according to an embodiment of the present disclosure, and as shown in fig. 2, the MIPI signal transmission system 200 includes: a MIPI signal transmitting device 201 and a MIPI signal receiving device 202 communicatively connected to the MIPI signal transmitting device;
the MIPI signal transmission apparatus 201 includes the MIPI signal transmission apparatus of the embodiment shown in fig. 1 described above;
the MIPI signal receiving apparatus 202 includes a second USB interface 2021;
the MIPI signal transmitting apparatus 201 is connected to the second USB interface 2021 of the MIPI signal receiving apparatus 202 through the first USB interface 2012, and transmits the MIPI signal to the MIPI signal receiving apparatus 202 through the first USB interface 2012 and the second USB interface 2021.
When the MIPI signal transmission device 201 is connected with the second USB interface 2021 of the MIPI signal receiving device 202 through the first USB interface 2012, if the MIPI signal transmission device 201 can be directly connected with the MIPI signal receiving device 201, the first USB interface 2012 can be directly connected with the second USB interface 2021, so as to realize the transmission of MIPI signals between the MIPI signal transmission device 201 and the MIPI signal receiving device 202; if the distance between the MIPI signal transmission device 201 and the MIPI signal reception device 202 is long, the first USB interface 2012 may be connected to the second USB interface 2021 through a USB wire, and the length of the USB wire may be determined according to the distance between the MIPI signal transmission device 201 and the MIPI signal reception device 202.
The first USB interface 2012 and the second USB interface 2021 are any one of a USB male interface and a USB female interface. Here, the type of the second USB interface 2021 may be determined according to the type of the first USB interface 2012, or the type of the first USB interface 2012 may be determined according to the type of the second USB interface 2021, for example, if the first USB interface 2012 is a male interface, the second USB interface 2021 is a female interface, and if the first USB interface 2012 is a female interface, the second USB interface 2021 is a male interface; the types of the interfaces at the two ends of the USB wire may also be determined according to the types of the first USB interface 2012 and the second USB interface 2021, if the first USB interface 2012 and the second USB interface 2021 are both male interfaces, the interfaces at the two ends of the USB wire are both female interfaces, if the first USB interface 2012 and the second USB interface 2021 are both female interfaces, the interfaces at the two ends of the USB wire are both male interfaces, if one of the first USB interface 2012 and the second USB interface 2021 is a male interface, and the other is a female interface, one end of the interfaces at the two ends of the USB wire is a female interface, and the other end is a male interface.
Fig. 3 is a schematic pin diagram of a USB male connector provided in the embodiment of the disclosure, and fig. 4 is a schematic pin diagram of a USB female connector provided in the embodiment of the disclosure, when a first USB interface 2012 is connected to a second USB interface 2021, if each pin of a high speed signal channel and a super speed data channel of the first USB interface 2012 is in one-to-one correspondence with each pin of a high speed signal channel and a super speed data channel of the second USB interface 2021, that is, D +/-of the first USB interface 2012 corresponds to D +/'of the second USB interface 2021, SSTX1 +/-of the first USB interface 2012 corresponds to SSRX1 +/' of the second USB interface 2021, SSTX2 +/-of the first USB interface 2012 corresponds to SSRX2 +/'of the second USB interface 2021, SSRX1 of the first USB interface 2012 corresponds to SSTX1 +/' of the second USB interface 2021, and SSRX2 +/-2 of the first USB interface corresponds to x2 +/'of the second USB interface 2021, each pin of the first USB interface 2012 corresponds to SSRX 353584 +/', and each, it means that the first USB interface 2012 is connected to the second USB interface 2021 in the forward direction; if each pin of the high-speed signal channel and the super-speed data channel of the first USB interface 2012 does not correspond to each pin of the high-speed signal channel and the super-speed data channel of the second USB interface 2021 one by one, D +/-of the first USB interface 2012 corresponds to D +/-of the second USB interface 2021, SSTX1 +/-of the first USB interface 2012 corresponds to SSRX2 +/-of the second USB interface 2021, SSTX2 +/-of the first USB interface 2012 corresponds to SSRX1 +/-of the second USB interface 2021, SSRX1 +/-of the first USB interface 102 corresponds to SSTX2 +/-of the second USB interface 2021, and SSRX2 +/-of the first USB interface 2012 corresponds to SSTX1 +/-of the second USB interface 2021, it indicates that the first USB interface 2012 is reversely connected to the second USB interface 2021.
Adopt above-mentioned system, MIPI signal transmission equipment passes through first USB interface and MIPI signal reception equipment's second USB interface connection to through first USB interface and second USB interface, with MIPI signal transmission to MIPI signal reception equipment, here, transmit the MIPI signal through the USB interface, can realize the long distance transmission of MIPI signal, and the structural strength of USB interface is better, and is not fragile in the use.
Fig. 5 is a schematic structural diagram of another MIPI signal transmission system according to an embodiment of the present disclosure, as shown in fig. 5, the MIPI signal receiving apparatus 202 further includes a receiving chip 2022, and the receiving chip 2022 is connected to the second USB interface 2021;
the receiving chip 2022 is configured to determine a connection mode between the first USB interface 2012 and the second USB interface 2021, and receive, through the second USB interface 2021, the MIPI signal transmitted by the MIPI signal transmission apparatus 201 through the first USB interface 2012 if the connection mode is forward connection.
The receiving chip 2022 may be a chip with a MIPI interface on a motherboard, or may be another chip with a MIPI interface, where the type of the receiving chip 2022 is not limited herein.
Fig. 6 is a pin diagram of an MIPI interface provided in the embodiment of the present disclosure, when the first USB interface 2012 is connected to the second USB interface 2021 in the forward direction, MIPI CLK +/-, MIPI D1+/-, MIPI D2+/-, MIPID3+/-, MIPI D4 +/-of the MIPI chip 2011 correspond to MIPI CLK +/-, MIPI D1+/-, MIPI D2+/-, MIPI 3+/-, MIPI D4 +/-of the receiving chip 2022; when the first USB interface 2012 is reversely connected to the second USB interface 2021, the MIPI CLK +/-, the MIPI D1+/-, the MIPI D2+/-, the MIPI D3+/-, and the MIPI D4 +/-of the MIPI chip 2011 correspond to the MIPI CLK +/-, the MIPI D2+/-, the MIPI D1+/-, the MIPI D4+/-, and the MIPI D3 +/-of the receiving chip 2022.
After the MIPI signal transmitting apparatus 201 transmits the MIPI signal to the MIPI signal receiving apparatus 202, if the receiving chip 2022 receives the MIPI signal within a preset time period, it indicates that the first USB interface 2012 is connected to the second USB interface 2021 in a forward direction, and if the receiving chip 2022 does not receive the MIPI signal within the preset time period, it indicates that the first USB interface 2012 is connected to the second USB interface 2021 in a reverse direction, where the preset time period may be 20 ms.
It should be noted that, when the I2C of the MIPI chip 2011 is connected to the first USB interface 2012, if the first USB interface 2012 is connected to the second USB interface 2021 in the forward direction, the SCL of the MIPI chip 2011 corresponds to the SCL of the receiving chip 2022, and the SDA of the MIPI chip 2011 corresponds to the SDA of the receiving chip 2022; if the first USB interface 2012 and the second USB interface 2021 are connected in reverse, the SCL of the MIPI chip 2011 corresponds to the SDA of the receiving chip 2022, and the SDA of the MIPI chip 2011 corresponds to the SCL of the receiving chip 2022. Here, when the MIPI chip 2011 is initialized, the connection manner of the first USB interface 2012 and the second USB interface 2021 is determined according to the result of the I2C communication, if the I2C communication is normal, it indicates that the first USB interface 2012 and the second USB interface 2021 are connected in the forward direction, and if the I2C communication fails, it indicates that the first USB interface 2012 and the second USB interface 2021 are connected in the reverse direction.
If the first USB interface 2012 is connected to the second USB interface 2021 in the forward direction, the MIPI signal transmitted by the MIPI signal transmission device 201 through the first USB interface 2012 is received through the second USB interface 2021; if the first USB interface 2012 and the second USB interface 2021 are connected in reverse, the MIPI signal received by the receiving chip 2022 needs to be converted according to the corresponding relationship of the data channels during the reverse connection.
Adopt above-mentioned system, MIPI signal transmission equipment passes through first USB interface and MIPI signal reception equipment's second USB interface connection to through first USB interface and second USB interface, with MIPI signal transmission to MIPI signal reception equipment, here, transmit the MIPI signal through the USB interface, can realize the long distance transmission of MIPI signal, and the structural strength of USB interface is better, and is not fragile in the use.
Fig. 7 is a schematic structural diagram of a third MIPI signal transmission system provided in the embodiment of the present disclosure, as shown in fig. 7, the MIPI signal receiving apparatus 202 further includes a relay chip 2023, and the relay chip 2023 is connected to the second USB interface 2021 and the receiving chip 2022;
the receiving chip 2022 is further configured to send a conversion instruction to the relay chip 2023 if the connection mode is reverse connection;
the relay chip 2023 is configured to receive the conversion instruction sent by the receiving chip 2022, and convert the MIPI signal received by the receiving chip 2022 according to the conversion instruction.
Here, after the receiving chip 2022 receives the MIPI signal, the connection state between the first USB interface 2012 and the second USB interface 2021 is obtained, if the first USB interface 2012 and the second USB interface 2021 are reversely connected, the receiving chip 2022 sends a conversion instruction to the relaying chip 2023, and the relaying chip 2023 converts the MIPI signal received by the receiving chip 2022 according to the conversion instruction and the corresponding relationship between the MIPI chip 2011 and the data channel of the receiving chip 2022 when the first USB interface 2012 and the second USB interface 2021 are reversely connected, that is, recombines the MIPI signal received by the receiving chip 2022, for example, if the MIPI signal transmitting device 201 transmits the MIPI signal through 4 data channels, the relaying chip 2023 may swap the data of the MIPI D1 +/-and the MIPI D2 of the receiving chip 2022, swap the data of the MIPI D3 and the MIPI D4 of the receiving chip 2022, and then recombines the data of the swapped 4 channels, and obtaining the converted MIPI signal.
It should be noted that, if the forward connection between the first USB interface 2012 and the second USB interface 2021 is used as a reference, the MIPI signal received by the receiving chip 2022 can be converted when the first USB interface 2012 and the second USB interface 2021 are connected in the reverse direction; if the first USB interface 2012 and the second USB interface 2021 are connected in the reverse direction as a reference, the MIPI signal received by the receiving chip 2022 may also be converted when the first USB interface 2012 and the second USB interface 2021 are connected in the forward direction.
Considering that different MIPI signal transmission devices 201 can be connected according to actual requirements for the MIPI signal receiving device 202, for example, for an unmanned aerial vehicle, according to a shooting scene, a shooting target, a shooting speed, and the like, a corresponding camera can be selected, for example, when shooting a night scene, a camera with a better night shooting effect can be selected, and when shooting a landscape, a camera with a panoramic function can be selected, so that a better shooting effect can be achieved; in addition, for unmanned aerial vehicle equipment manufacturers, in the unmanned aerial vehicle test phase, various cameras need to be adapted for debugging. Therefore, the MIPI signal receiving device 202 needs to acquire the connection state of the MIPI signal transmitting device 201, and complete corresponding processing operations according to the connection state, for example, when the MIPI signal transmitting device 201 is disconnected from the MIPI signal receiving device 202, the MIPI signal receiving device 202 needs to store the image data that has been captured, and when the MIPI signal transmitting device 201 is reconnected to the MIPI signal receiving device 202, the MIPI signal receiving device 202 needs to trigger an initialization operation on the MIPI chip 2011. In this case, when the MIPI signal transmission apparatus 201 is disconnected or connected to the MIPI signal reception apparatus 202, the disconnected or connected state needs to be transmitted to the MIPI signal reception apparatus 202.
In the case where the two auxiliary channels of the first USB interface 2012 are connected, the polarities of the preset levels of the two auxiliary channels of the first USB interface 2012 are opposite. Here, the SBU2 of the first USB interface 2012 is connected at a level opposite to the polarity of the preset level of the SBU1, i.e., when the preset level of the SBU1 is low, the SBU2 is connected at high, and when the preset level of the SBU1 is high, the SBU2 is connected at low.
In this way, the MIPI signal receiving apparatus 202 can determine the connection state of the MIPI signal transmitting apparatus 201 and the MIPI signal receiving apparatus 202 according to the polarity of the current level of the SBU1 of the second USB interface 2021. Illustratively, when the MIPI signal transmitting apparatus 201 is connected to the MIPI signal receiving apparatus 202, the current level of the SBU1 of the first USB interface 2012 is consistent with the level of the SBU2, that is, the current level of the SBU1 is opposite to the polarity of the preset level of the SBU1, so that the current level of the SBU1 of the second USB interface 2021 of the MIPI signal receiving apparatus 202 is also opposite to the polarity of the preset level of the SBU1, indicating that the connection state of the MIPI signal transmitting apparatus 201 and the MIPI signal receiving apparatus 202 is connection; when the MIPI signal transmission device 201 is disconnected from the MIPI signal reception device 202, the current level of the SBU1 of the first USB interface 2012 is the same as the polarity of the preset level of the SBU1, and the current level of the SBU1 of the second USB interface 2021 of the MIPI signal reception device 202 is also the same as the polarity of the preset level of the SBU1, which indicates that the connection state of the MIPI signal transmission device 201 and the MIPI signal reception device 202 is disconnected. Here, the connection relationship between the MIPI signal transmitting device 201 and the MIPI signal receiving device 202 is determined according to the two auxiliary channels of the first USB interface, so that the hot plug function of the MIPI signal transmitting device can be realized.
Adopt above-mentioned system, MIPI signal transmission equipment passes through first USB interface and MIPI signal reception equipment's second USB interface connection to through first USB interface and second USB interface, with MIPI signal transmission to MIPI signal reception equipment, here, transmit the MIPI signal through the USB interface, can realize the long distance transmission of MIPI signal, and the structural strength of USB interface is better, and is not fragile in the use.
The present disclosure also provides an electronic device including the MIPI signal transmission system provided in the above embodiment.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure. It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (9)
1. An MIPI signal transmission apparatus, characterized by comprising: the mobile industry processor interface comprises a Mobile Industry Processor Interface (MIPI) chip and a first USB interface connected with the MIPI chip;
the MIPI chip is used for generating MIPI signals and transmitting the MIPI signals through the first USB interface;
the MIPI chip comprises an MIPI interface, and the MIPI chip is connected with the first USB interface through the MIPI interface;
the MIPI chip comprises a clock channel and a data channel, the first USB interface comprises a high-speed signal channel and an ultra-high-speed data channel, the clock channel and the high-speed signal channel are used for transmitting differential clock signals, and the data channel and the ultra-high-speed data channel are used for transmitting MIPI data.
2. The apparatus of claim 1,
a clock channel of the MIPI chip is connected with a high-speed signal channel of the first USB interface;
and the data channel of the MIPI chip is connected with the ultra-high-speed data channel of the first USB interface.
3. The device according to claim 1, wherein the polarities of the preset levels of the two auxiliary channels of the first USB interface are opposite in case that the two auxiliary channels of the first USB interface are connected.
4. An MIPI signal transmission system, comprising: the mobile terminal comprises MIPI signal transmission equipment and MIPI signal receiving equipment which is in communication connection with the MIPI signal transmission equipment;
the MIPI signal transmission apparatus includes the MIPI signal transmission apparatus described in any one of the above claims 1 to 3;
the MIPI signal receiving equipment comprises a second USB interface;
the MIPI signal transmission equipment is connected with a second USB interface of the MIPI signal receiving equipment through the first USB interface, and MIPI signals are transmitted to the MIPI signal receiving equipment through the first USB interface and the second USB interface.
5. The system according to claim 4, wherein the first USB interface and the second USB interface are any one of a USB male interface and a USB female interface.
6. The system of claim 4, wherein the MIPI signal receiving apparatus further comprises a receiving chip, the receiving chip being connected with the second USB interface;
the receiving chip is configured to determine a connection mode of the first USB interface and the second USB interface, and receive, through the second USB interface, the MIPI signal transmitted by the MIPI signal transmission device through the first USB interface if the connection mode is forward connection.
7. The system of claim 6, wherein the MIPI signal receiving apparatus further comprises: the relay chip is connected with the second USB interface and the receiving chip;
the receiving chip is further configured to send a conversion instruction to the relay chip if the connection mode is reverse connection;
the relay chip is used for receiving the conversion instruction sent by the receiving chip and converting the MIPI signal received by the receiving chip according to the conversion instruction.
8. The system according to claim 4, wherein the polarities of the preset levels of the two auxiliary channels of the first USB interface are opposite in case that the two auxiliary channels of the first USB interface are connected.
9. An electronic device, characterized by comprising the MIPI signal transmission system according to any one of claims 4 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN112306929A (en) * | 2020-03-20 | 2021-02-02 | 北京字节跳动网络技术有限公司 | Method, device and system for transmitting data |
| CN113111023B (en) * | 2021-05-11 | 2023-02-28 | 读书郎教育科技有限公司 | Intelligent device and method for externally connecting mipi camera through usb |
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| CN110740281A (en) | 2020-01-31 |
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