WO2020164314A1 - 网络摄像机及录播系统 - Google Patents

网络摄像机及录播系统 Download PDF

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Publication number
WO2020164314A1
WO2020164314A1 PCT/CN2019/127860 CN2019127860W WO2020164314A1 WO 2020164314 A1 WO2020164314 A1 WO 2020164314A1 CN 2019127860 W CN2019127860 W CN 2019127860W WO 2020164314 A1 WO2020164314 A1 WO 2020164314A1
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pin
interface
audio
chip
video
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PCT/CN2019/127860
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English (en)
French (fr)
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刘小成
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广州视源电子科技股份有限公司
广州视睿电子科技有限公司
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Publication of WO2020164314A1 publication Critical patent/WO2020164314A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/268—Signal distribution or switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • 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

Definitions

  • This application relates to the field of computer technology, such as a network camera and a recording and broadcasting system.
  • IP Camera Internet Protocol Camera
  • IPC Internet Protocol Camera
  • the current IP Camera uses a single network cable for data transmission, and can only realize Power Over Ethernet (POE) and transmit audio and video data through Ethernet.
  • POE Power Over Ethernet
  • audio and video data is transmitted via Ethernet, since the audio and video data needs to be converted into Ethernet data first, this requires an encoding process, resulting in a relatively large delay in data transmission to the remote end (usually around 200ms). For occasions with high real-time requirements (such as recording and broadcasting), there will be a problem of picture delay and poor user experience.
  • the embodiment of the present application proposes a network camera and recording and broadcasting system, which can realize low-delay transmission of audio and video data in a network cable, thereby solving the problem of picture delay.
  • the embodiments of the present application also provide a network camera, including a lens, a sensor, an audio and video processing chip, a first audio and video to advanced video transport (Advanced Video Transport, AVT) interface chip, an Ethernet chip, and a first network card interface;
  • the first network card interface includes a first pin pair, a second pin pair, and a third pin pair; the input end of the sensor is connected to the lens, and the output end of the sensor is connected to the input end of the audio and video processing chip ,
  • the first audio and video data output terminal of the audio and video processing chip is connected to the input terminal of the first audio and video to AVT interface chip; the output terminal of the first audio and video to AVT interface chip is connected to the third pin pair
  • the Ethernet data transceiver end of the audio and video processing chip is connected to the first pin pair and the second pin pair of the first network card interface through the Ethernet chip.
  • the network camera further includes a first network transformer and a power delivery management (PD) module, one end of the first network transformer is connected to the first pin pair and the second pin pair, and The other end of the first network transformer is connected to the Ethernet chip; the PD module is connected to the first network transformer.
  • PD power delivery management
  • the Ethernet chip is a 100M Ethernet physical interface transceiver (Physical interface transceiver, PHY) chip.
  • PHY Physical interface transceiver
  • the first network card interface further includes a fourth pin pair;
  • the network camera further includes a second audio and video to AVT interface chip;
  • the second audio and video data output terminal of the audio and video processing chip is connected to the The input terminal of the second audio/video to AVT interface chip;
  • the output terminal of the second audio/video to AVT interface chip is connected to the fourth pin pair.
  • the first network card interface is a Registered Jack (RJ) 45 interface; the first pin pair corresponds to the first pin and the second pin of the RJ45 interface; the second pin pair corresponds to The third pin and the sixth pin of the RJ45 interface; the third pin pair corresponds to the fourth pin and the fifth pin of the RJ45 interface; the fourth pin pair corresponds to the seventh pin and the eighth pin of the RJ45 interface.
  • RJ Registered Jack
  • the first network card interface is an RJ45 interface; the first pin pair corresponds to the first pin and the second pin of the RJ45 interface; the second pin pair corresponds to the third pin and the sixth pin of the RJ45 interface Pins; the third pin pair corresponds to the seventh pin and the eighth pin of the RJ45 interface; the fourth pin pair corresponds to the fourth pin and the fifth pin of the RJ45 interface.
  • the first audio/video to AVT interface chip is a National Semiconductor (NS) 2510 chip, an NS2520 chip or an NS2530 chip; the audio/video processing chip is a HiSilicon chip.
  • NS National Semiconductor
  • the embodiment of the present application also provides a recording and broadcasting system, including a recording and broadcasting host and the aforementioned network camera; wherein, the recording and broadcasting host includes a second network card interface; the first network card interface of the network camera is connected to the recording and broadcasting host The second network card interface of the broadcast host is connected through a network cable.
  • the recording and broadcasting host further includes an AVT interface translating audio and video chip and a second network transformer;
  • the second network card interface includes a first pin pair, a second pin pair, a third pin pair, and a fourth pin Yes; the first pin pair and the second pin pair are connected to the second network transformer; the AVT interface audio and video chip is connected to the third pin pair and the fourth pin pair.
  • the second network card interface is an RJ45 interface
  • the first pin pair corresponds to the first pin and the second pin of the RJ45 interface
  • the second pin pair corresponds to the third pin and the sixth pin of the RJ45 interface Pins
  • the third pin pair corresponds to the fourth pin and the fifth pin of the RJ45 interface
  • the fourth pin pair corresponds to the seventh pin and the eighth pin of the RJ45 interface.
  • the audio and video processing chip and the first audio and video to AVT interface chip are added, and the audio and video processing chip is connected to the first audio and video to AVT interface chip and Ethernet respectively.
  • the chip enables the configuration of the audio and video processing chip to transmit audio and video data and Ethernet data through the same network card interface and network cable. In some scenarios with relatively high real-time performance, it is not necessary to convert the audio and video data to Ethernet data first when transmitting audio and video data, avoiding the problem of large delays in data transmission to the remote end and causing picture delay. .
  • FIG. 1 is a schematic structural diagram of a network camera provided by the first embodiment of the present application.
  • Fig. 2 is a schematic structural diagram of a recording and broadcasting system provided by a second embodiment of the present application.
  • the first embodiment of the present application provides a network camera 100, including a lens 10, a sensor 20, an audio and video processing chip 30, a first audio and video to AVT interface chip 40, an Ethernet chip 50, and a first network card Interface 60; wherein, the first network card interface 60 includes a first pin pair, a second pin pair, and a third pin pair; the input end of the sensor 20 is connected to the lens 10, and the output end of the sensor 20 is connected to the The input end of the audio and video processing chip 30, the first audio and video data output end of the audio and video processing chip 30 is connected to the input end of the first audio and video to AVT interface chip 40; the first audio and video to AVT interface The output end of the chip 40 is connected to the third pin pair; the Ethernet data transceiver end of the audio and video processing chip 30 is connected to the first pin pair and the second pin of the first network card interface 60 through the Ethernet chip 50 Correct.
  • the lens 10 is configured to capture and collect images of an external scene, and generate a corresponding light signal to transmit to the sensor 20.
  • the sensor 20 is configured to convert the received optical signal into an electrical signal, and transmit the electrical signal to the audio and video processing chip 30.
  • the audio and video processing chip 30 implements data encoding, interface and protocol conversion on the electrical signal from the sensor 20, for example, it can be converted into audio and video data, and the audio and video data is passed through the first audio and video data.
  • the output terminal is output to the first audio and video to AVT interface chip 40; or the audio and video data is converted into Ethernet data through protocol conversion, and the Ethernet data is transmitted to the Ethernet chip 50 through the Ethernet data transceiver terminal .
  • the audio and video processing chip 30 may be a HiSilicon chip, which has a built-in Microcontroller Unit (MCU) processing function, and can receive configuration information from outside, such as according to configuration information sent from outside.
  • the audio and video processing chip 30 can directly transmit audio and video data to the first audio and video to AVT interface chip 40, or can switch the audio and video data to Ethernet data and send it to the Ethernet chip 50.
  • MCU Microcontroller Unit
  • the first audio and video to AVT interface chip 40 can convert audio and video data into AVT video data, and perform the AVT video data through the third pin pair of the first network card interface 60 transmission.
  • the first audio/video to AVT interface chip 40 may be a NS2510/NS2520/NS2530 chip, which has at least one pair of output differential lines (Serial Digital OUT (SDO)+ ⁇ SDO-) to respectively The two pins of the third pin pair are connected to realize the transmission of AVT video data.
  • SDO Serial Digital OUT
  • SDO- Serial Digital OUT
  • AVT technology has the advantages of an all-digital architecture and digital signal transmission.
  • AVT technology uses a new generation of digital video compression algorithm. This algorithm is more effective than the standard Video Compress-2 Low Delay (VC-2LD) compression algorithm.
  • VC-2LD Video Compress-2 Low Delay
  • the video delay is extremely small (less than one frame of image period), which is completely imperceptible to the human eye and can be regarded as real-time.
  • the innovative rate adaptive transmission technology according to the transmission distance and signal attenuation, can adaptively adjust the digital compression ratio to achieve the best video image effect.
  • the NS2510/NS2520/NS2530 chip video input interface is compatible with 10/20bit bit width, and has multiple video formats such as BT656/1120, CEA-861, CPI, DVP, etc.
  • the maximum supported picture resolution is 1920 ⁇ 1080, and the picture is smooth It is 30 frames per second (1080progressive scan@30frame per second, 1080P@30fps), and supports digital audio interface (Sony/Philips Digital Interface, SPDIF) / integrated circuit audio (Inter-Integrated Circuit Sound, I2S) audio embedding.
  • SPDIF Nony/Philips Digital Interface
  • I2S Inter-Integrated Circuit Sound
  • the first network card interface 60 may be an RJ45 interface, for example, an RJ45 interface for data terminal equipment such as an Ethernet network card and a router Ethernet interface.
  • RJ45 interface for example, an RJ45 interface for data terminal equipment such as an Ethernet network card and a router Ethernet interface.
  • mark these 4 pairs of pins as the first pin pair (including the first pin and the second pin), the second pin pair (including the third pin and the sixth pin), and the third pin Pair (including fourth pin and fifth pin), fourth pin pair (including seventh pin and eighth pin).
  • the first pin (TX+) is set to send data +
  • the second pin (TX-) is set to send data -
  • the third pin (RX+) is set to receive data +
  • the sixth pin (RX+) is set to receive data -.
  • the remaining pins 4, 5, 7 and 8 are not used.
  • the first pin pair includes the third pin and the sixth pin
  • the second pin pair includes the first pin and the second pin
  • the third pin pair includes The seventh pin and the eighth pin
  • the fourth pin pair include the fourth pin and the fifth pin
  • the Ethernet chip 50 is configured to receive the Ethernet data sent by the audio and video processing chip 30, and realize the encoding of the Ethernet data and the transmission through the first pin pair and the second pin pair. .
  • the Ethernet chip 50 is a Fast Ethernet PHY chip.
  • the network camera 100 adds the audio and video processing chip 30 and the first audio and video to AVT interface chip 40, and makes the audio and video processing chip 30 connect to the The first audio and video are converted to the AVT interface chip 40 and the Ethernet chip 50, so that through the configuration of the audio and video processing chip 20, a network card interface and a network cable can simultaneously transmit audio and video data and Ethernet data.
  • it is not necessary to convert the audio and video data to Ethernet data first when transmitting audio and video data, avoiding the problem of large delays in data transmission to the remote end and causing picture delay. .
  • the network camera 100 further includes a first network transformer 70 and a PD module 80, one end of the first network transformer 70 is connected to the first pin pair And the second pin pair, the other end of the first network transformer 70 is connected to the Ethernet chip 50; the PD module 80 is connected to the first network transformer 70.
  • the first network transformer 70 is connected to the first pin pair and the second pin pair, and the PD module 80 is connected to the first network transformer 70 to implement Ethernet-based Of power.
  • the external device transmits Ethernet data to the network camera 100
  • it can also provide DC power supply to the network camera 100.
  • the DC power supply can be achieved through the first pin pair and the second pin pair. It is transmitted to the first network transformer 70, and then transmitted to various components via the PD module 80.
  • the first network transformer 70 has the functions of signal transmission, impedance matching, waveform repair, signal clutter suppression, and high voltage isolation.
  • the PD module 80 extracts 48V power from the first network transformer 70, and then The 48V power supply is converted into a 12V power supply, thereby supplying power to various chips or components of the network camera 100.
  • the PD module 80 may be AG5500, but other PD modules may also be selected, which is not specifically limited in this application.
  • the network camera 100 further includes a second audio and video to AVT interface chip 90; the second audio and video data output terminal of the audio and video processing chip 30 is connected The input terminal of the second audio/video to AVT interface chip 90; the output terminal of the second audio/video to AVT interface chip 90 is connected to the fourth pin pair.
  • two or more channels of audio and video data need to be transmitted at the same time.
  • a second audio and video to AVT interface chip 70 can be added and connected to the fourth pin pair in the idle state. So as to realize the transmission of two channels of audio and video data.
  • the two channels of audio and video data can be respectively passed through the first audio and video to AVT interface chip 40 and the second audio and video to AVT interface
  • the chip 70 and its corresponding pin pairs perform transmission.
  • the network camera 100 provided in the embodiment of the present application can be applied to a recording and broadcasting system, a monitoring system, and the like. Take the recording system as an example:
  • the second embodiment of the present application also provides a recording and broadcasting system.
  • the recording and broadcasting system includes a recording and broadcasting host 200 and the network camera 100 according to any one of the above embodiments; wherein, the recording and broadcasting system
  • the host 200 includes a second network card interface 210; the first network card interface 10 of the network camera 100 and the second network card interface 210 of the recording and broadcasting host 200 are connected through a network cable 300.
  • the real-time requirements of the screen are relatively high, because the network camera 100 in the above embodiment does not need to convert audio and video data into Ethernet data, which greatly reduces the screen delay The problem.
  • the recording and broadcasting host 200 further includes an AVT interface translating audio and video chip 220 and a second network transformer 230;
  • the second network card interface 210 includes a first pin pair, a second pin pair, and a third pin pair And a fourth pin pair; the first pin pair and the second pin pair are connected to the second network transformer 230;
  • the AVT interface audio and video chip 220 is connected to the third pin pair and the fourth pin pair.
  • the second network card interface 210 is an RJ45 interface, which is similar or consistent in structure with the first network card interface 10.
  • the first pin pair corresponds to the first pin and the second pin of the RJ45 interface
  • the second pin pair corresponds to the third pin and the sixth pin of the RJ45 interface
  • the third pin pair corresponds to the fourth pin of the RJ45 interface Pin and fifth pin
  • the fourth pin pair corresponds to the seventh pin and the eighth pin of the RJ45 interface.
  • the AVT interface to audio and video chip 220 can be NS2511/NS2521/NS25 chip, NS2511/NS2521/NS25 chip as a decoding chip paired with NS2510/NS2520/NS2530 chip, not only fully supports NS2510/NS2520/NS2530 chip format, And it can receive two signals at the same time.

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Abstract

本申请公开了一种网络摄像机及录播系统，网络摄像机包括镜头、传感器、音视频处理芯片、第一音视频转先进视频传输AVT接口芯片、以太网芯片以及第一网卡接口；其中，所述第一网卡接口包括第一针脚对、第二针脚对以及第三针脚对；所述传感器的输入端连接所述镜头，所述传感器的输出端连接所述音视频处理芯片的输入端，所述音视频处理芯片的第一音视频数据输出端连接所述第一音视频转AVT接口芯片的输入端；所述第一音视频转AVT接口芯片的输出端连接所述第三针脚对；所述音视频处理芯片的以太网数据收发端通过所述以太网芯片连接所述第一网卡接口的第一针脚对以及第二针脚对。

Description

网络摄像机及录播系统
本申请要求在2019年2月15日提交中国专利局、申请号为201920199134.9的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及计算机技术领域，例如涉及一种网络摄像机及录播系统。
背景技术
网络摄像机(Internet Protocol Camera，IP Camera)(或简称为IPC)，是由网络编码模块和模拟摄像机组合而成。网络编码模块将模拟摄像机采集到的模拟视频信号编码压缩成数字信号，从而可以直接通过网线接入网络交换及路由设备。
目前的IP Camera利用单根网线进行数据的传输，只能实现基于以太网的供电(Power Over Ethernet，POE)以及通过以太网传输音视频数据。但通过以太网传输音视频数据时，由于音视频数据需先转成以太网数据，这需要一个编码的过程，从而导致数据传输到远端的延时会比较大(一般在200ms左右)，这样对于实时性要求比较高的场合(比如录播)，会出现画面延迟的问题，用户体验不佳。
发明内容
本申请实施例提出了一种网络摄像机及录播系统，能在网线中实现音视频数据的低延时传输，从而解决了画面延迟的问题。
本申请实施例还提供了一种网络摄像机，包括镜头、传感器、音视频处理芯片、第一音视频转先进视频传输(Advanced Video Transport，AVT)接口芯片、以太网芯片以及第一网卡接口；其中，所述第一网卡接口包括第一针脚对、第二针脚对以及第三针脚对；所述传感器的输入端连接所述镜头，所述传感器的输出端连接所述音视频处理芯片的输入端，所述音视频处理芯片的第一音视频数据输出端连接所述第一音视频转AVT接口芯片的输入端；所述第一音视频转AVT接口芯片的输出端连接所述第三针脚对；所述音视频处理芯片的以太网 数据收发端通过所述以太网芯片连接所述第一网卡接口的第一针脚对以及第二针脚对。
在一实施例中，该网络摄像机还包括第一网络变压器以及电源传输管理(Power Delivery，PD)模块，所述第一网络变压器的一端连接所述第一针脚对以及第二针脚对，所述第一网络变压器的另一端连接所述以太网芯片；所述PD模块与第一所述网络变压器连接。
在一实施例中，所述以太网芯片为百兆以太网物理接口收发器(Physical interface transceiver，PHY)芯片。
在一实施例中，所述第一网卡接口还包括第四针脚对；所述网络摄像机还包括第二音视频转AVT接口芯片；所述音视频处理芯片的第二音视频数据输出端连接所述第二音视频转AVT接口芯片的输入端；所述第二音视频转AVT接口芯片的输出端连接所述第四针脚对。
在一实施例中，所述第一网卡接口为注册的插座(Registered Jack，RJ)45接口；所述第一针脚对对应RJ45接口的第一针脚和第二针脚；所述第二针脚对对应RJ45接口的第三针脚和第六针脚；所述第三针脚对对应RJ45接口的第四针脚和第五针脚；所述第四针脚对对应RJ45接口的第七针脚和第八针脚。
在一实施例中，所述第一网卡接口为RJ45接口；所述第一针脚对对应RJ45接口的第一针脚和第二针脚；所述第二针脚对对应RJ45接口的第三针脚和第六针脚；所述第三针脚对对应RJ45接口的第七针脚和第八针脚；所述第四针脚对对应RJ45接口的第四针脚和第五针脚。
在一实施例中，所述第一音视频转AVT接口芯片为美国国家半导体(National Semiconductor，NS)2510芯片、NS2520芯片或者NS2530芯片；所述音视频处理芯片为海思芯片。
本申请实施例还提供了一种录播系统，包括录播主机以及如上述的网络摄像机；其中，所述录播主机包括第二网卡接口；所述网络摄像机的第一网卡接口与所述录播主机的第二网卡接口通过网线连接。
在一实施例中，所述录播主机还包括AVT接口转音视频芯片以及第二网络变压器；所述第二网卡接口包括第一针脚对、第二针脚对、第三针脚对以及第四针脚对；所述第一针脚对以及所述第二针脚对连接所述第二网络变压器；所 述AVT接口转音视频芯片连接所述第三针脚对以及第四针脚对。
在一实施例中，所述第二网卡接口为RJ45接口；所述第一针脚对对应RJ45接口的第一针脚和第二针脚；所述第二针脚对对应RJ45接口的第三针脚和第六针脚；所述第三针脚对对应RJ45接口的第四针脚和第五针脚；所述第四针脚对对应RJ45接口的第七针脚和第八针脚。
上述一个实施例中，通过增加了所述音视频处理芯片以及所述第一音视频转AVT接口芯片，并且使得所述音视频处理芯片分别连接所述第一音视频转AVT接口芯片以及以太网芯片，使得通过音视频处理芯片的配置可以通过同一个网卡接口和网线传输音视频数据和以太网数据。在一些对实时性比较高的场景下，不需要在传输音视频数据时先将音视频数据需先转成以太网数据，避免了数据传输到远端的延时比较大而导致画面延迟的问题。
附图说明
图1是本申请第一实施例提供的网络摄像机的结构示意图；
图2是本申请第二实施例提供的录播系统的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。
请参阅图1，本申请第一实施例提供了一种网络摄像机100，包括镜头10、传感器20、音视频处理芯片30、第一音视频转AVT接口芯片40、以太网芯片50以及第一网卡接口60；其中，所述第一网卡接口60包括第一针脚对、第二针脚对以及第三针脚对；所述传感器20的输入端连接所述镜头10，所述传感器20的输出端连接所述音视频处理芯片30的输入端，所述音视频处理芯片30的第一音视频数据输出端连接所述第一音视频转AVT接口芯片40的输入端；所述第一音视频转AVT接口芯片40的输出端连接所述第三针脚对；所述音视频处理芯片30的以太网数据收发端通过所述以太网芯片50连接所述第一网卡接口60的第一针脚对以及第二针脚对。
在本实施例中，所述镜头10设置为对外部景物的图像捕捉采集，并产生对应的光信号后传输给所述传感器20。
在本实施例中，所述传感器20设置为将接收到的光信号转化为电信号，并将电信号传输给音视频处理芯片30。
在本实施例中，所述音视频处理芯片30实现对来自于传感器20的电信号进行数据编码，接口及协议转换，如可转换为音视频数据，并将音视频数据通过第一音视频数据输出端输出至第一音视频转AVT接口芯片40；或者将所述音视频数据进行协议转换，转换成以太网数据，并通过以太网数据收发端将所述以太网数据传输给以太网芯片50。
在一实施例中，所述音视频处理芯片30可为海思芯片，其内置微控制单元(Microcontroller Unit，MCU)处理功能，并可以接收来自于外部的配置信息，如根据外部发送的配置信息，所述音视频处理芯片30可以将音视频数据直接传输给所述第一音视频转AVT接口芯片40，也可以将所述音视频数据切换为以太网数据，并发送给所述以太网芯片50。
在本实施例中，所述第一音视频转AVT接口芯片40可将音视频数据转换为AVT视频数据，并将所述AVT视频数据通过所述第一网卡接口60的第三引脚对进行传输。
其中，所述第一音视频转AVT接口芯片40可为NS2510/NS2520/NS2530芯片，其具有至少一对输出差分线(串行数据输出(Serial Digital OUT，SDO)+\SDO-)，以分别连接所述第三引脚对的两个引脚来实现AVT视频数据的传输。
其中，AVT技术具有全数字架构和数字信号传输的优点。为了克服由于数字信号在传输线缆上的衰减所带来的传输距离上的限制，AVT技术采用了新一代数字视频压缩算法。这种算法比标准的视频压缩低延迟(Video Compress-2Low Delay，VC-2LD)压缩算法更为有效。而且，视频延迟极小(小于一帧图像周期)，人眼完全察觉不到，可以认为就是实时的。不仅如此，创新的速率自适应传输技术，根据传输的距离和信号的衰减，可以自适应调整数字压缩比例，以达到最佳的视频图像效果。
其中，NS2510/NS2520/NS2530芯片视频输入接口兼容10/20bit位宽，且具BT656/1120、CEA-861、CPI、DVP等多种视频格式，最大支持画面分辨率为1920×1080，画面流畅度为每秒30帧(1080progressive scan@30frame per second， 1080P@30fps)，同时支持数字音频接口(Sony/Philips Digital Interface，SPDIF)/集成电路内置音频(Inter—Integrated Circuit Sound，I2S)音频嵌入。
其中，所述第一网卡接口60可为RJ45接口，例如，为用于以太网网卡、路由器以太网接口等数据终端设备类型的RJ45接口。其中，RJ45接口内至有4对引脚对(8个引脚)，以分别对应连接网线的4对双绞线(8条线芯)。其中，标记这4对引脚对为第一引脚对(包含第一引脚和第二引脚)、第二引脚对(包含第三引脚和第六引脚)、第三引脚对(包含第四引脚和第五引脚)、第四引脚对(包含第七引脚和第八引脚)。根据目前的定义，在传输以太网数据时，第一引脚(TX+)设置为发送数据+，第二引脚(TX-)设置为发送数据-，第三引脚(RX+)设置为接收数据+，第六引脚(RX+)设置为接收数据-。而剩下的第四、五、七、八引脚则未使用。
在本申请的其他实施例中，也可定义第一引脚对包含第三引脚和第六引脚，第二引脚对包含第一引脚和第二引脚，第三引脚对包含第七引脚和第八引脚)、第四引脚对包含第四引脚和第五引脚，这些方案均在本申请的包含范围之内。
在本实施例中，所述以太网芯片50设置为接收所述音视频处理芯片30发送的以太网数据，并实现以太网数据的编码及通过第一引脚对以及第二引脚对进行传输。
在一实施例中，所述以太网芯片50为百兆以太网PHY芯片。
综上所述，本实施例提供的网络摄像机100，通过增加了所述音视频处理芯片30以及所述第一音视频转AVT接口芯片40，并且使得所述音视频处理芯片30分别连接所述第一音视频转AVT接口芯片40以及以太网芯片50，从而通过音视频处理芯片20的配置可以使得一个网卡接口和网线同时传输音视频数据和以太网数据。在一些对实时性比较高的场景下，不需要在传输音视频数据时先将音视频数据需先转成以太网数据，避免了数据传输到远端的延时比较大而导致画面延迟的问题。
在第一实施例的基础上，在一个可选实施例中，所述网络摄像机100还包括第一网络变压器70以及PD模块80，所述第一网络变压器70的一端连接所述第一针脚对以及第二针脚对，所述第一网络变压器70的另一端连接所述以太 网芯片50；所述PD模块80与第一所述网络变压器70连接。
在本实施例中，所述第一网络变压器70连接所述第一引脚对以及所述第二引脚对，而所述PD模块80连接所述第一网络变压器70，以实现基于以太网的受电。
在本实施例中，外部的设备在为所述网络摄像机100传输以太网数据的同时，还能为所述网络摄像机100提供直流供电，直流供电可通过第一引脚对和第二引脚对传输至第一网络变压器70，再经由所述PD模块80传输给各个元件。其中，所述第一网络变压器70有信号传输、阻抗匹配、波形修复、信号杂波抑制和高电压隔离等作用，所述PD模块80从所述第一网络变压器70中抽取得到48V电源，然后将48V电源转换为12V电源，从而为网络摄像机100的各个芯片或部件供电。
其中，所述PD模块80可为AG5500，但也可以选择其他PD模块，本申请不做具体限定。
在第一实施例的基础上，在一个可选实施例中，所述网络摄像机100还包括第二音视频转AVT接口芯片90；所述音视频处理芯片30的第二音视频数据输出端连接所述第二音视频转AVT接口芯片90的输入端；所述第二音视频转AVT接口芯片90的输出端连接所述第四针脚对。
在一些情况下，需要同时传输两路或者更多路的音视频数据，则此时，可以进一步在增加第二音视频转AVT接口芯片70，并连接到处于空闲状态的第四引脚对，从而实现两路音视频数据的传输。
例如，对于网络摄像机100传输的同时包含全景的音视频数据以及包含特写的音视频数据，可将这两路音视频数据分别通过第一音视频转AVT接口芯片40以及第二音视频转AVT接口芯片70及其对应的引脚对进行传输。
在本申请实施例中提供的所述网络摄像机100可以应用于录播系统、监控系统等。以录播系统为例：
请参阅图2，本申请第二实施例还提供了一种录播系统，所述录播系统包括录播主机200以及如上述任一实施例所述的网络摄像机100；其中，所述录播主机200包括第二网卡接口210；所述网络摄像机100的第一网卡接口10与所述录播主机200的第二网卡接口210通过网线300连接。
在本实施例中，对于录播场景，其对画面的实时性要求比较高，因为采用上述实施例的网络摄像机100，在传输音视频数据可无需转换为以太网数据，大大减轻了画面延时的问题。
在本实施例中，所述录播主机200还包括AVT接口转音视频芯片220以及第二网络变压器230；所述第二网卡接口210包括第一针脚对、第二针脚对、第三针脚对以及第四针脚对；所述第一针脚对以及所述第二针脚对连接所述第二网络变压器230；所述AVT接口转音视频芯片220连接所述第三针脚对以及第四针脚对。
其中，所述第二网卡接口210为RJ45接口，其与所述第一网卡接口10的结构类似或一致。例如，所述第一针脚对对应RJ45接口的第一针脚和第二针脚；所述第二针脚对对应RJ45接口的第三针脚和第六针脚；所述第三针脚对对应RJ45接口的第四针脚和第五针脚；所述第四针脚对对应RJ45接口的第七针脚和第八针脚。
其中，所述AVT接口转音视频芯片220可为NS2511/NS2521/NS25芯片，NS2511/NS2521/NS25芯片作为解码芯片与NS2510/NS2520/NS2530芯片配对使用，不仅全面支持NS2510/NS2520/NS2530芯片格式，而且可同时接收两路信号。

Claims (10)

  1. 一种网络摄像机，包括镜头、传感器、音视频处理芯片、第一音视频转先进视频传输AVT接口芯片、以太网芯片以及第一网卡接口；其中，所述第一网卡接口包括第一针脚对、第二针脚对以及第三针脚对；所述传感器的输入端连接所述镜头，所述传感器的输出端连接所述音视频处理芯片的输入端，所述音视频处理芯片的第一音视频数据输出端连接所述第一音视频转AVT接口芯片的输入端；所述第一音视频转AVT接口芯片的输出端连接所述第三针脚对；所述音视频处理芯片的以太网数据收发端通过所述以太网芯片连接所述第一网卡接口的第一针脚对以及第二针脚对。
  2. 根据权利要求1所述的网络摄像机，还包括：第一网络变压器以及电源传输管理PD模块，所述第一网络变压器的一端连接所述第一针脚对以及第二针脚对，所述第一网络变压器的另一端连接所述以太网芯片；所述PD模块与第一所述网络变压器连接。
  3. 根据权利要求1所述的网络摄像机，其中，所述以太网芯片为百兆以太网物理接口收发器PHY芯片。
  4. 根据权利要求1所述的网络摄像机，其中，所述第一网卡接口还包括第四针脚对；所述网络摄像机还包括第二音视频转AVT接口芯片；所述音视频处理芯片的第二音视频数据输出端连接所述第二音视频转AVT接口芯片的输入端；所述第二音视频转AVT接口芯片的输出端连接所述第四针脚对。
  5. 根据权利要求4所述的网络摄像机，其中，所述第一网卡接口为注册的插座RJ45接口；所述第一针脚对对应RJ45接口的第一针脚和第二针脚；所述第二针脚对对应RJ45接口的第三针脚和第六针脚；所述第三针脚对对应RJ45接口的第四针脚和第五针脚；所述第四针脚对对应RJ45接口的第七针脚和第八针脚。
  6. 根据权利要求4所述的网络摄像机，其中，所述第一网卡接口为RJ45接口；所述第一针脚对对应RJ45接口的第一针脚和第二针脚；所述第二针脚对对应RJ45接口的第三针脚和第六针脚；所述第三针脚对对应RJ45接口的第七针脚和第八针脚；所述第四针脚对对应RJ45接口的第四针脚和第五针脚。
  7. 根据权利要求1至6任意一项所述的网络摄像机，其中，所述第一音视频转AVT接口芯片为美国国家半导体NS2510芯片、NS2520芯片或者NS2530 芯片；所述音视频处理芯片为海思芯片。
  8. 一种录播系统，包括录播主机以及如权利要求1至7任意一项所述的网络摄像机；其中，所述录播主机包括第二网卡接口；所述网络摄像机的第一网卡接口与所述录播主机的第二网卡接口通过网线连接。
  9. 根据权利要求8所述的录播系统，其中，所述录播主机还包括先进视频传输AVT接口转音视频芯片以及第二网络变压器；所述第二网卡接口包括第一针脚对、第二针脚对、第三针脚对以及第四针脚对；所述第一针脚对以及所述第二针脚对连接所述第二网络变压器；所述AVT接口转音视频芯片连接所述第三针脚对以及第四针脚对。
  10. 根据权利要求9所述的录播系统，其中，所述第二网卡接口为注册的插座RJ45接口；所述第一针脚对对应RJ45接口的第一针脚和第二针脚；所述第二针脚对对应RJ45接口的第三针脚和第六针脚；所述第三针脚对对应RJ45接口的第四针脚和第五针脚；所述第四针脚对对应RJ45接口的第七针脚和第八针脚。
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