Multipath 4K recording and broadcasting equipment and system based on HDBaseT transmission technology

Abstract

The utility model discloses a multipath 4K recording and broadcasting device and system based on an HDBaseT transmission technology. The recording and broadcasting device comprises a system-level chip, an HDBaseT transmission unit, a video acquisition unit, a video display unit, an audio acquisition unit, a wired network unit, a peripheral unit, a serial port unit, a USB interface unit and a processor unit. The HDBaseT transmission unit comprises a plurality of HDBaseT interfaces, a plurality of HDBaseT receiving and processing units, a POE (Power Over Ethernet) power supply unit and a PTZ (Pan / Tilt / Zoom) control unit; the HDBaseT receiving and processing unit is connected with the system-on-chip, the HDBaseT interface is connected with the HDBaseT receiving and processing unit, the POE power supply unit is connected with the HDBaseT interface, and the PTZ control unit is connected with the HDBaseT receiving and processing unit. The recording and broadcasting equipment has high resolution and a multi-channel processing function, improves the multi-channel processing performance and the video quality, and reduces the cost. The system can be widely applied to the technical field of recording and broadcasting.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of recording and broadcasting, especially to multi -channel 4K recording and broadcasting equipment and system based on HDBaseT transmission technology. BACKGROUND

[0002] 4K technology will HD high definition signal from 1920 1080 resolution, is promoted to 4096 2160 resolution, and its pixel point is more than 4 times of HD high definition signal. On 4K transmission, it needs to be transmitted in non-compressed format to ensure video quality. HDBaseT is a high-definition digital interface technology, and only one single-core network cable can transmit non-compressed high-resolution video signals, audio, Ethernet, control signals and power. The application requirement of standard classroom is that the number of video shooting is not less than 4, and with the increase of the richness of teaching content, the demand for teaching space is increasing, and the demand for the number of shooting points is also gradually increasing. However, the existing technology products are limited by image processing performance, and the use of network video stream leads to video quality loss and video delay. In the case of multi-channel processing, the resolution is low, and in the case of high resolution, the number of processing channels is small, and the chip cost is high.

[0003] In summary, the technical problems in the related art need to be improved. UTILITY MODEL CONTENT

[0004] The utility model aims at solving one of the technical problems in the related art at least to some extent.

[0005] In order to achieve the above technical purpose, the technical scheme adopted by the utility model embodiment comprises:

[0006] On the one hand, the utility model embodiment provides multi -channel 4K recording and broadcasting equipment based on HDBaseT transmission technology, which comprises:

[0007] System level chip;

[0008] HDBaseT transmission unit, the HDBaseT transmission unit includes a plurality of HDBaseT interfaces, a plurality of HDBaseT receiving processing units, a POE power supply unit and a PTZ control unit;

[0009] The HDBaseT receiving processing unit is connected with the system level chip, the HDBaseT interface is connected with the HDBaseT receiving processing unit, the POE power supply unit is connected with the HDBaseT interface, and the PTZ control unit is connected with the HDBaseT receiving processing unit.

[0010] In some embodiments, the recording and broadcasting equipment further comprises:

[0011] a video acquisition unit, the video acquisition unit comprising an input SDI interface, an SDI decoding chip, an input VGA interface, a VGA decoding chip, an input HDMI interface, and an HDMI decoding chip;

[0012] the SDI decoding chip is connected with the system-level chip, the input SDI interface is connected with the SDI decoding chip, the VGA decoding chip is connected with the system-level chip, the input VGA interface is connected with the VGA decoding chip, the HDMI decoding chip is connected with the system-level chip, and the input HDMI interface is connected with the HDMI decoding chip.

[0013] In some embodiments, the recording and broadcasting device further comprises:

[0014] a video display unit, the video display unit comprising a first output HDMI interface, an HDMI encoding chip, a second output HDMI interface, a third output HDMI interface, and an HDMI distribution chip;

[0015] the HDMI encoding chip is connected with the system-level chip, the first output HDMI interface is connected with the HDMI encoding chip, the HDMI distribution chip is connected with the system-level chip, and the second output HDMI interface and the third output HDMI interface are both connected with the HDMI distribution chip.

[0016] In some embodiments, the recording and broadcasting device further comprises:

[0017] an audio acquisition unit, the audio acquisition unit comprising an input audio interface, an output audio interface, and an audio codec chip;

[0018] the audio codec chip is connected with the system-level chip, and the input audio interface and the output audio interface are both connected with the audio codec chip.

[0019] In some embodiments, the recording and broadcasting device further comprises:

[0020] a wired network unit, the wired network unit comprising an Ethernet PHY chip and an RJ45 interface;

[0021] the Ethernet PHY chip is connected with the system-level chip, and the RJ45 interface is connected with the Ethernet PHY chip.

[0022] In some embodiments, the recording and broadcasting device further comprises:

[0023] a peripheral unit, the peripheral unit comprising a plurality of SATA interfaces and a small liquid crystal screen communication interface;

[0024] The SATA interface is connected with the system-level chip, and the small liquid crystal screen communication interface is connected with the system-level chip.

[0025] In some embodiments, the recording and broadcasting device further comprises:

[0026] A serial port unit, comprising a plurality of serial interfaces and an RS232 level chip;

[0027] The RS232 level chip is connected with the system-level chip, and the serial interface is connected with the RS232 level chip.

[0028] In some embodiments, the recording and broadcasting device further comprises:

[0029] A USB interface unit, comprising a plurality of USB2.0 interfaces, a plurality of USB3.0 interfaces and a USB3.0 HUB chip;

[0030] The USB2.0 interface is connected with the system-level chip, the USB3.0 HUB chip is connected with the system-level chip, and the USB3.0 interface is connected with the USB3.0 HUB chip.

[0031] In some embodiments, the recording and broadcasting device further comprises:

[0032] A processor unit, comprising a plurality of DDR4 chips and a plurality of FLASH chips;

[0033] The DDR4 chip is connected with the system-level chip, and the FLASH chip is connected with the system-level chip.

[0034] The recording and broadcasting device has the following beneficial effects:

[0035] The embodiment of the utility model provides a kind of multiway 4K recording and broadcasting equipment and system based on HDBaseT transmission technology, recording and broadcasting equipment includes: system-level chip, HDBaseT transmission unit, video acquisition unit, video display unit, audio acquisition unit, wired network unit, peripheral unit, serial port unit, USB interface unit and processor unit;The HDBaseT transmission unit includes a plurality of HDBaseT interfaces, a plurality of HDBaseT receiving processing units, POE power supply unit and PTZ control unit;The HDBaseT receiving processing unit is connected with the system-level chip, the HDBaseT interface is connected with the HDBaseT receiving processing unit, the POE power supply unit is connected with the HDBaseT interface, and the PTZ control unit is connected with the HDBaseT receiving processing unit.The recording and broadcasting equipment has high resolution and multiway 4K processing function, improves multiway processing performance and video quality, and reduces cost.

[0036] In another aspect, the utility model discloses a multi -channel 4K recording broadcast system based on HDBaseT transmission technology, include:

[0037] The recording broadcast equipment described;

[0038] Power system unit, the power system unit includes power switch button, the power system unit is connected with recording broadcast equipment.

[0039] The utility model has the beneficial effect as follows:

[0040] The utility model discloses a multi -channel 4K recording broadcast system based on HDBaseT transmission technology including recording broadcast equipment and power system unit of this embodiment. Among them, the power system unit includes power switch button, and the power system unit is connected with recording broadcast equipment. This recording broadcast system has high resolution and multi -channel 4K processing function, improves multi -channel processing performance and video quality, and reduces cost.

[0041] The other features and advantages of the utility model will be described in the subsequent specification, and, part from the specification becomes apparent, or is understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structure that is specially pointed out in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical scheme in the embodiment of the present application, the drawings needed in the embodiment description will be briefly introduced below, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0043] Figure 1 It is the structural diagram of multi -channel 4K recording broadcast equipment based on HDBaseT transmission technology of the utility model embodiment;

[0044] Figure 2 It is the structural diagram of multi -channel 4K recording broadcast system based on HDBaseT transmission technology of the utility model embodiment. DETAILED DESCRIPTION

[0045] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0046] It can be understood that the terms "first", "second", and the like used in the present application can be used herein to describe various concepts, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of the present application, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "when" or "in response to determining".

[0047] The terms "at least one", "multiple", "each", "any" and the like used in the present application include one, two or more than two, multiple includes two or more than two, each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0049] Before the embodiments of the present application are described in detail, first, some nouns and terms involved in the embodiments of the present application are described, and the nouns and terms involved in the embodiments of the present application are applicable to the following explanations.

[0050] HDBaseT technology: is a high-definition digital interface technology, which can transmit uncompressed high-resolution video signals, audio, Ethernet, control signals and power through a single-core network cable.

[0051] HDMI interface: High Definition Multimedia Interface.

[0052] SDI interface: the first letter abbreviation of serial digital interface.

[0053] VGA: Video Graphics Array, i.e. video graphics array.

[0054] SoC: The abbreviation of System on Chip, also known as chip-level system.

[0055] SATA interface: The abbreviation of Serial Advanced Technology Attachment, also known as SATA interface.

[0056] DDR4: DDR4 memory is a new generation of memory specification, full name is Double-Data-Rate Fourth Generation Synchronous Dynamic Random Access Memory (DDR4 SDRAM).

[0057] RJ45: It is a kind of connector for information socket (i.e. communication outlet) in wiring system, which is composed of plug (connector, crystal head) and socket (module), and the plug has 8 grooves and 8 contacts.

[0058] RS232: RS-232 standard interface (also known as EIA RS-232) is one of the commonly used serial communication interface standards.

[0059] RS485: EIA-485 (formerly called RS-485 or RS485) is a standard for 2-wire, half-duplex, balanced transmission line multipoint communication belonging to the OSI model physical layer.

[0060] POE: Power over Ethernet, also known as PoE, is a technology that can transmit power and data to devices through twisted pair wire in Ethernet.

[0061] USB: USB (Universal Serial Bus 2.0) is a new type of interface technology applied in computer field. There are four (five) kinds of USB interfaces: USB1.1, USB2.0, USB3.0 and USB3.1 (3.1 Gen 1 and 3.1 Gen2).

[0062] PTZ: In security monitoring applications, it is the abbreviation of Pan / Tilt / Zoom, which represents the pan, tilt and zoom control of the camera.

[0063] PHY (Port Physical Layer): It is a common abbreviation for the physical layer of the OSI model. PHY connects a data link layer device (MAC) to a physical medium, such as fiber or copper cable. An Ethernet PHY is a chip that can send and receive Ethernet data frames.

[0064] USB HUB: It refers to a device that can expand one USB interface into multiple and enable simultaneous use of these interfaces. USB HUB can be divided into USB2.0 HUB, USB3.0 HUB, and USB3.1 HUB according to the USB protocol.

[0065] In the related art, in the changing demand of 4K in the education application field, in addition to the fields of broadcast television, film and television entertainment, security monitoring, medical health, intelligent transportation, industrial manufacturing and the like, 4K video has many application scenarios. In the education field, the value of 4K ultra-high-definition video is also very huge. First, the ultra-high-definition picture brought by 4K technology will bring great changes from "overall high definition" to "detailed high definition" to teaching video application. Every detail in the teaching scene, such as capturing the subtle changes in the expression of teachers or students during class, and every detail of the blackboard can be captured at one time. Secondly, the great value of 4K ultra-high-definition video technology in teaching is also reflected in the future intelligent education scene. The essence of intelligent education is to use AI technology to grasp the "detailed dynamics and rules" of the classroom in real time, and to provide personalized teaching for teachers or school authorities through intelligent analysis, and to provide more accurate reference for continuously improving teaching quality. This requires more clear and accurate original classroom video data. Thirdly, 4K ultra-high-definition technology is also of great help to the safety of students. Campus safety has always been the most concerned problem for parents and teachers. However, the current video monitoring generally has relatively large pixels and low clarity, so there are many monitoring blind spots in the campus, and 4K ultra-high-definition video will greatly improve the clarity and monitoring coverage of the campus video monitoring, providing a safer "home" for students. In addition, in special professional teaching, such as medical health, industrial manufacturing and the like, not only the actual work needs the support of ultra-high-definition video, but also in teaching demonstration, the clearer the video display, the easier it is for students to master these skills. In addition, in the development of 4K non-compressed transmission technology, 4K technology will upgrade the resolution of the familiar HD high-definition signal from 1920x1080 to 4096x2160, which is more than 4 times the pixel points of the HD high-definition signal. 4K display indicates that the video resolution jumps to a new generation at a speed of four times that of 1080p. Since the data volume of 4K video transmission is increased by 4 times based on full high definition, higher requirements are put forward for the transmission capacity of video signals. In 4K transmission, in order to ensure video quality, 4K video must be transmitted in non-compressed format. At present, the main connection methods of realizing non-compressed transmission are three: SDI, HDMI and HDBaseT.

[0066] Among them, the SDI interface is a digital video interface standard formulated by the SMPTE (Society of Motion Picture and Television Engineers) organization, which is a digital component serial interface that sequentially transmits each bit of the data word and the corresponding data through a single channel. At present, SDI interface is widely used in camera industry, according to the transmission rate, SD-SDI can transmit 720*576 and below resolution signal; HD-SDI can transmit 1080P30fps signal; 3G-SDI can transmit 1080P60fps signal; 12G-SDI can transmit 4K60fps signal at the highest, 12G-SDI has three connection modes, including single-link 12G-SDI, double-link 6G-SDI and quad-link 3G-SDI. Most of the high-definition 4K professional cameras on the market use 4-way BNC to transmit 12G-SDI signal at the same time. In terms of physical performance, the maximum available video transmission bandwidth of HDMI1.4 is 8.16Gbit / s, which can theoretically support 4K / 30p(8bit) signal transmission, but if from the perspective of real-time non-compressed transmission, 4K transmission rate needs to reach 12Gbit / s, and the real representative of HDMI starting to support 4K ultra-high-definition signal transmission is HDMI2.0 standard. First of all, the HDMI2.0 standard has made a lot of breakthroughs in physical performance compared with HDMI1.4, from the original 8.16Gbit / s available video transmission bandwidth to 14.4Gbit / s, which can really meet the transmission of 4K / 60p(8bit) signal. Secondly, the HDMI2.0 standard completely supports the color gamut space standard of Rec.2020, which meets the future development trend of ultra-high-definition video technology. HDBaseT is a high-definition digital interface technology that can transmit uncompressed high-resolution video signals, audio, Ethernet, control signals and power through a single-core network cable. It is developed for the needs of the A / V market and can transmit 4K ultra-high-definition, 1080p full high-definition and 3D uncompressed video at a long distance, far exceeding the capabilities of traditional HDMI. Transmission uses ordinary CAT5e / 6 network cable for uncompressed transmission, and the connector also uses ordinary RJ45 connector, and the transmission distance reaches 100 meters. In addition, it also provides Ethernet function, 100W power supply capability (PoE) and other control signal channels.

[0067] In the practical needs of education application, a recording and broadcasting device in education connects multiple cameras in the classroom, and through a series of signal processing links such as acquisition, splicing, processing and display, realizes the real-time presentation effect of multi-directional picture combination in the same video picture, and then the teaching situation of teachers and students can be watched simultaneously from a single picture. However, most of the recording and broadcasting devices on the market are limited by the video acquisition capability and image processing capability, and can only support simultaneous processing of multiple 1080P resolution images. A small part of the device products benefit from powerful image processing capability, and use more performance resources to meet the 1 to 2 4K resolution image processing, but cannot support more image access. However, the application of standard and exquisite classroom requires at least 4 channels of camera video, and with the increasing demand for teaching space brought by the richness of teaching content, the demand for the number of shooting points will also gradually increase. The increasing demand for multi-channel 4K acquisition and processing brings a new challenge to the recording and broadcasting device in education.

[0068] At present, the cost of uncompressed 4K video transmission is too high. First, the higher the transmission rate of SDI signal, the higher the requirement for wire, and the transmission distance will also be affected. One 4K ultra-high definition signal requires 4 3G-SDI cables, which requires too high device interface; although a single 12G-SDI cable has appeared, the high cable price and the corresponding processing device cost make it far away from the practical stage. The limited transmission distance of HDMI line and the high price of professional cable greatly limit its application. In addition, the transmission of SDI and HDMI signals mainly realizes the transmission of audio and video, and cannot realize the transmission of control signal and power supply. In engineering use, additional control communication lines need to be laid to realize the control of the host on the video camera equipment. In addition, the processing performance of multi-channel 4K is limited, and the existing technical products are limited by the image processing performance. For the multi-channel video application scheme, one scheme focuses on the number of processing channels, but cannot support higher resolution images; another scheme focuses on 4K image processing, but reduces the number of processing channels; another scheme uses a higher-end image chip to realize more 4K decoding by using powerful decoding performance, but the cost of the selected chip is not low, and the image receiving mode adopts network video stream, which brings video quality loss and video delay.

[0069] The embodiment of the utility model can solve the technical implementation of 4K uncompressed real-time receiving, and can solve the technical implementation of multi-channel 4K image processing. Based on HDBaseT transmission technology, only one CAT5e / 6 network cable is needed, which can realize long-distance uncompressed transmission of power supply, control, audio and 4K video at the same time. Through reasonable design of the hardware system, the acquisition, processing and display of multi-channel HDBaseT 4K audio and video signals are completed, and the maximization goal of device cost and device performance is realized.

[0070] As Figure 1 shown in the utility model embodiment provides a multi-channel 4K recording and broadcasting equipment based on HDBaseT transmission technology, comprising:

[0071] System level chip;

[0072] HDBaseT transmission unit, HDBaseT transmission unit includes multiple HDBaseT interface, multiple HDBaseT receiving processing unit, POE power supply unit and PTZ control unit;

[0073] HDBaseT receiving processing unit is connected with system level chip, HDBaseT interface is connected with HDBaseT receiving processing unit, POE power supply unit is connected with HDBaseT interface, and PTZ control unit is connected with HDBaseT receiving processing unit.

[0074] In some embodiments, the utility model embodiment provides a multi-channel 4K recording and broadcasting equipment based on HDBaseT transmission technology includes system level chip and HDBaseT transmission unit, wherein, HDBaseT transmission unit includes multiple HDBaseT interface, multiple HDBaseT receiving processing unit, POE power supply unit and PTZ control unit.Exemplarily, first HDBaseT interface, second HDBaseT interface, third HDBaseT interface and fourth HDBaseT interface can be provided, and first HDBaseT receiving processing unit, second HDBaseT receiving processing unit, third HDBaseT receiving processing unit and fourth HDBaseT receiving processing unit are provided.First HDBaseT interface, second HDBaseT interface, third HDBaseT interface and fourth HDBaseT interface are connected with POE power supply unit, first HDBaseT interface is connected with first HDBaseT receiving processing unit, second HDBaseT interface is connected with second HDBaseT receiving processing unit, third HDBaseT interface is connected with third HDBaseT receiving processing unit, and fourth HDBaseT interface is connected with fourth HDBaseT receiving processing unit.First HDBaseT receiving processing unit, second HDBaseT receiving processing unit, third HDBaseT receiving processing unit and fourth HDBaseT receiving processing unit are connected with system level chip.PTZ control unit is connected to first HDBaseT receiving processing unit, second HDBaseT receiving processing unit, third HDBaseT receiving processing unit and fourth HDBaseT receiving processing unit, so as to realize the multi-channel 4K HDBaseT transmission.It can be understood that the power supply of external access camera can be provided by POE power supply unit.

[0075] In some embodiments, the recording and broadcasting device further comprises:

[0076] a video acquisition unit, the video acquisition unit comprising an input SDI interface, an SDI decoding chip, an input VGA interface, a VGA decoding chip, an input HDMI interface, and an HDMI decoding chip;

[0077] the SDI decoding chip is connected with the system-level chip, the input SDI interface is connected with the SDI decoding chip, the VGA decoding chip is connected with the system-level chip, the input VGA interface is connected with the VGA decoding chip, the HDMI decoding chip is connected with the system-level chip, and the input HDMI interface is connected with the HDMI decoding chip.

[0078] In some embodiments, the recording and broadcasting device further comprises a video acquisition unit, wherein the video acquisition unit comprises an input SDI interface, an SDI decoding chip, an input VGA interface, a VGA decoding chip, an input HDMI interface, and an HDMI decoding chip. The SDI decoding chip, the VGA decoding chip, and the HDMI decoding chip are all connected with the system-level chip, the input SDI interface is connected with the SDI decoding chip, the input VGA interface is connected with the VGA decoding chip, and the input HDMI interface is connected with the HDMI decoding chip, so as to realize the video acquisition function.

[0079] In some embodiments, the recording and broadcasting device further comprises:

[0080] a video display unit, the video display unit comprising a first output HDMI interface, an HDMI encoding chip, a second output HDMI interface, a third output HDMI interface, and an HDMI distribution chip;

[0081] the HDMI encoding chip is connected with the system-level chip, the first output HDMI interface is connected with the HDMI encoding chip, the HDMI distribution chip is connected with the system-level chip, and the second output HDMI interface and the third output HDMI interface are both connected with the HDMI distribution chip.

[0082] In some embodiments, the recording and broadcasting device further comprises a video display unit, wherein the video display unit comprises a first output HDMI interface, an HDMI encoding chip, a second output HDMI interface, a third output HDMI interface, and an HDMI distribution chip. The HDMI encoding chip and the HDMI distribution chip are both connected with the system-level chip, the first output HDMI interface is connected with the HDMI encoding chip, and the second output HDMI interface and the third output HDMI interface are both connected with the HDMI distribution chip, so as to realize the video display function. It can be understood that the HDMI signal can be expanded and distributed by the HDMI distribution chip.

[0083] In some embodiments, the recording and broadcasting device further comprises:

[0084] an audio acquisition unit, the audio acquisition unit comprising an input audio interface, an output audio interface, and an audio codec chip;

[0085] The audio codec chip is connected with the system-level chip, and the input audio interface and the output audio interface are both connected with the audio codec chip.

[0086] In some embodiments, the recording and broadcasting device further comprises an audio acquisition unit, wherein the audio acquisition unit comprises an input audio interface, an output audio interface, and an audio codec chip. The audio codec chip is connected with the system-level chip, and the input audio interface and the output audio interface are both connected with the audio codec chip, thereby realizing the audio acquisition function.

[0087] In some embodiments, the recording and broadcasting device further comprises:

[0088] a wired network unit, the wired network unit comprising an Ethernet PHY chip and an RJ45 interface;

[0089] The Ethernet PHY chip is connected with the system-level chip, and the RJ45 interface is connected with the Ethernet PHY chip.

[0090] In some embodiments, the recording and broadcasting device further comprises a wired network unit, wherein the wired network unit comprises an Ethernet PHY chip and an RJ45 interface. The Ethernet PHY chip is connected with the system-level chip, and the RJ45 interface is connected with the Ethernet PHY chip, thereby realizing the wired network connection.

[0091] In some embodiments, the recording and broadcasting device further comprises:

[0092] a peripheral unit, the peripheral unit comprising a plurality of SATA interfaces and a small liquid crystal screen communication interface;

[0093] The SATA interfaces are connected with the system-level chip, and the small liquid crystal screen communication interface is connected with the system-level chip.

[0094] In some embodiments, the recording and broadcasting device further comprises a peripheral unit, wherein the peripheral unit comprises a plurality of SATA interfaces and a small liquid crystal screen communication interface. Exemplarily, a first SATA interface and a second SATA interface can be provided. The first SATA interface and the second SATA interface are both connected with the system-level chip, and the small liquid crystal screen communication interface is connected with the system-level chip, thereby being capable of providing an access interface for an external device. Further, the small liquid crystal screen communication interface can be connected with a device small liquid crystal screen component to realize the display of device state information.

[0095] In some embodiments, the recording and broadcasting device further comprises:

[0096] a serial port unit, the serial port unit comprising a plurality of serial interfaces and an RS232 level chip;

[0097] The RS232 level chip is connected with the system level chip, and the serial interface is connected with the RS232 level chip.

[0098] In some embodiments, the recording and broadcasting device further comprises a serial port unit, wherein the serial port unit comprises a plurality of serial interfaces and an RS232 level chip. For example, a first serial interface, a second serial interface, a third serial interface, a fourth serial interface, a fifth serial interface and a sixth serial interface can be provided. The first serial interface, the second serial interface, the third serial interface, the fourth serial interface, the fifth serial interface and the sixth serial interface are connected with the RS232 level chip, and the RS232 level chip is connected with the system level chip, so as to provide an access interface for the signal transmission line.

[0099] In some embodiments, the recording and broadcasting device further comprises:

[0100] a USB interface unit, the USB interface unit comprising a plurality of USB2.0 interfaces, a plurality of USB3.0 interfaces and a USB3.0 HUB chip;

[0101] The USB2.0 interfaces are connected with the system level chip, the USB3.0 HUB chip is connected with the system level chip, and the USB3.0 interfaces are connected with the USB3.0 HUB chip.

[0102] In some embodiments, the recording and broadcasting device further comprises a USB interface unit, wherein the USB interface unit comprises a plurality of USB2.0 interfaces, a plurality of USB3.0 interfaces and a USB3.0 HUB chip. For example, a first USB2.0 interface, a second USB2.0 interface, a first USB3.0 interface, a second USB3.0 interface, a third USB3.0 interface and a fourth USB3.0 interface can be provided. The first USB2.0 interface and the second USB2.0 interface are connected with the system level chip. The first USB3.0 interface, the second USB3.0 interface, the third USB3.0 interface and the fourth USB3.0 interface are connected with the USB3.0 HUB chip, and the USB3.0 HUB chip is connected with the system level chip, so as to provide an access interface for the external USB device. It can be understood that the expansion of one-in-four-out of the USB3.0 signal can be realized through the USB3.0 HUB chip.

[0103] In some embodiments, the recording and broadcasting device further comprises:

[0104] a processor unit, the processor unit comprising a plurality of DDR4 chips and a plurality of FLASH chips;

[0105] The DDR4 chips are connected with the system level chip, and the FLASH chips are connected with the system level chip.

[0106] In some embodiments, the recording and broadcasting device further comprises a processor unit, wherein the processor unit comprises a plurality of DDR4 chips and a plurality of FLASH chips. Exemplarily, a first DDR4 chip, a second DDR4 chip, a third DDR4 chip, a fourth DDR4 chip, a first FLASH chip and a second FLASH chip can be provided. The first DDR4 chip, the second DDR4 chip, the third DDR4 chip and the fourth DDR4 chip are all connected with the system chip. The first FLASH chip and the second FLASH chip are both connected with the system chip, so as to realize multi-processor parallel computing.

[0107] In some embodiments, the present embodiment supports a maximum of 4-way HDBaseT interface, supports POE power supply and PTZ control at the same time, and supports uncompressed transmission of 4K image, meets the multi-view video acquisition demand of recording and broadcasting teaching scene, and meets the demand of 4K input video of teaching application. Higher resolution acquisition accuracy and more view angle image acquisition can truly restore the teaching scene and teaching details. The present embodiment supports a maximum of 1-way HDMI input and VGA input, meets the input acquisition demand of teacher's computer or projector in the recording and broadcasting teaching scene. A maximum of 1-way SDI input is supported, which meets the input acquisition demand of board writing lens in the recording and broadcasting teaching scene. A maximum of 3-way video output is supported, which meets the director display and live display demand. The design of multiple output fully meets the viewing demand of synchronous display in the observation room. The present embodiment integrates an audio acquisition unit, has audio processing capabilities such as noise reduction and gain, and meets the use requirements of audio input and output in the recording and broadcasting teaching scene. The present embodiment designs rich peripheral interfaces, supports a maximum of 6 serial interfaces, meets the RS232 communication standard, supports interconnection communication with external devices meeting the communication interface standard. A maximum of 2 USB2.0 interfaces and 4 USB3.0 interfaces are supported, which supports USB2.0 and USB3.0 communication standards, supports the access of U disk, mouse, keyboard, wireless remote control and higher speed USB storage peripherals. A maximum of 2 SATA interfaces are supported, which supports built-in hard disk connection and meets the large file storage of real-time recording in the teaching process. In addition, the present embodiment adopts HDBaseT transmission technology, which can simultaneously transmit video signals, PTZ control signals and power supply in one transmission medium, the transmission bandwidth meets the transmission requirements of uncompressed 4K image signals, and the transmission distance meets the implementation requirements of long-distance wiring in the teaching scene.

[0108] The beneficial effects of implementing the embodiment of the present application include: the embodiment of the present application provides a multi-channel 4K recording and broadcasting device and system based on HDBaseT transmission technology, and the recording and broadcasting device comprises: a system-level chip, an HDBaseT transmission unit, a video acquisition unit, a video display unit, an audio acquisition unit, a wired network unit, an external unit, a serial port unit, a USB interface unit and a processor unit; the HDBaseT transmission unit comprises a plurality of HDBaseT interfaces, a plurality of HDBaseT receiving and processing units, a POE power supply unit and a PTZ control unit; the HDBaseT receiving and processing unit is connected with the system-level chip, the HDBaseT interface is connected with the HDBaseT receiving and processing unit, the POE power supply unit is connected with the HDBaseT interface, and the PTZ control unit is connected with the HDBaseT receiving and processing unit. The recording and broadcasting device has high resolution and multi-channel 4K processing function, improves multi-channel processing performance and video quality, and reduces cost.

[0109] As shown in Figure 2 the embodiment of the present application also provides a multi-channel 4K recording and broadcasting system based on HDBaseT transmission technology, which comprises:

[0110] the recording and broadcasting device 201 of the embodiment;

[0111] a power system unit 202, the power system unit comprises a power switch button, and the power system unit is connected with the recording and broadcasting device.

[0112] In some embodiments, the embodiment of the present application also provides a multi-channel 4K recording and broadcasting system based on HDBaseT transmission technology, which comprises the recording and broadcasting device 201 and the power system unit 202 of the embodiment. The power system unit comprises a power switch button, and the power on-off control can be realized through the power switch button. The power system unit is connected with the recording and broadcasting device, and the working power supply for the recording and broadcasting device of the embodiment can be provided through the power system unit.

[0113] The beneficial effects of implementing the embodiment of the present application include: the embodiment of the present application provides a multi-channel 4K recording and broadcasting system based on HDBaseT transmission technology, which comprises the recording and broadcasting device and the power system unit of the embodiment. The power system unit comprises a power switch button, and the power system unit is connected with the recording and broadcasting device. The recording and broadcasting system has high resolution and multi-channel 4K processing function, improves multi-channel processing performance and video quality, and reduces cost.

[0114] In the description of the present specification, the description referring to the terms "one embodiment", "another embodiment" or "certain embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0115] The preferred embodiments of the application are described above with reference to the accompanying drawings, and are not limited to the scope of the application. Any modifications, equivalent replacements and improvements made by those skilled in the art without departing from the scope and essence of the application should be within the scope of the application.

Claims

1. A multi-channel 4K recording and broadcasting device based on HDBaseT transmission technology, characterized in that, Comprise: System on chip; HDBaseT transmission unit, comprising a plurality of HDBaseT interfaces, a plurality of HDBaseT receiving processing units, a POE power supply unit and a PTZ control unit; The HDBaseT receiving processing unit is connected with the system on chip, the HDBaseT interface is connected with the HDBaseT receiving processing unit, the POE power supply unit is connected with the HDBaseT interface, and the PTZ control unit is connected with the HDBaseT receiving processing unit.

2. The capture device of claim 1, wherein, The recording and broadcasting equipment further comprises: Video acquisition unit, comprising input SDI interface, SDI decoding chip, input VGA interface, VGA decoding chip, input HDMI interface and HDMI decoding chip; The SDI decoding chip is connected with the system on chip, the input SDI interface is connected with the SDI decoding chip, the VGA decoding chip is connected with the system on chip, the input VGA interface is connected with the VGA decoding chip, the HDMI decoding chip is connected with the system on chip, and the input HDMI interface is connected with the HDMI decoding chip.

3. The capture device of claim 1, wherein, The recording and broadcasting equipment further comprises: Video display unit, comprising first output HDMI interface, HDMI encoding chip, second output HDMI interface, third output HDMI interface and HDMI distribution chip; The HDMI encoding chip is connected with the system on chip, the first output HDMI interface is connected with the HDMI encoding chip, the HDMI distribution chip is connected with the system on chip, and the second output HDMI interface and the third output HDMI interface are connected with the HDMI distribution chip.

4. The capture device of claim 1, wherein, The recording and broadcasting equipment further comprises: Audio acquisition unit, comprising input audio interface, output audio interface and audio codec chip; The audio codec chip is connected with the system on chip, and the input audio interface and the output audio interface are connected with the audio codec chip.

5. The capture device of claim 1, wherein, The recording and broadcasting equipment further comprises: Wired network unit, comprising Ethernet PHY chip and RJ45 interface; The Ethernet PHY chip is connected with the system on chip, and the RJ45 interface is connected with the Ethernet PHY chip.

6. The capture device of claim 1, wherein, The recording and broadcasting equipment further comprises: Peripheral unit, comprising a plurality of SATA interfaces and small liquid crystal screen communication interface; The SATA interface is connected with the system on chip, and the small liquid crystal screen communication interface is connected with the system on chip.

7. The capture device of claim 1, wherein, The recording and broadcasting equipment further comprises: Serial port unit, comprising a plurality of serial interfaces and RS232 level chip; The RS232 level chip is connected with the system on chip, and the serial interface is connected with the RS232 level chip.

8. The capture device of claim 1, wherein, The recording and broadcasting equipment further comprises: USB interface unit, comprising a plurality of USB2.0 interfaces, a plurality of USB3.0 interfaces and USB3.0 HUB chip; The USB2.0 interface is connected with the system chip, the USB3.0 HUB chip is connected with the system chip, and the USB3.0 interface is connected with the USB3.0 HUB chip.

9. The capture device of claim 1, wherein, The recording and broadcasting device further comprises: A processor unit comprising a plurality of DDR4 chips and a plurality of FLASH chips; The DDR4 chips are connected with the system chip, and the FLASH chips are connected with the system chip.

10. A multi-channel 4K recording and broadcasting system based on HDBaseT transmission technology, characterized in that, Comprise: The recording and broadcasting device according to any one of claims 1-9; A power system unit comprising a power switch button, the power system unit being connected with the recording and broadcasting device.

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