WO2013170765A1 - 一种传输视频信号的方法、装置、系统和终端 - Google Patents

一种传输视频信号的方法、装置、系统和终端 Download PDF

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Publication number
WO2013170765A1
WO2013170765A1 PCT/CN2013/075716 CN2013075716W WO2013170765A1 WO 2013170765 A1 WO2013170765 A1 WO 2013170765A1 CN 2013075716 W CN2013075716 W CN 2013075716W WO 2013170765 A1 WO2013170765 A1 WO 2013170765A1
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WIPO (PCT)
Prior art keywords
signal
analog
digital
digital signal
video
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PCT/CN2013/075716
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English (en)
French (fr)
Inventor
殷俊
张兴明
傅利泉
朱江明
吴军
吴坚
Original Assignee
浙江大华技术股份有限公司
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Application filed by 浙江大华技术股份有限公司 filed Critical 浙江大华技术股份有限公司
Priority to US14/391,574 priority Critical patent/US9578297B2/en
Priority to EP13791567.4A priority patent/EP2814247B1/en
Priority to KR1020147035373A priority patent/KR101659992B1/ko
Publication of WO2013170765A1 publication Critical patent/WO2013170765A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00Colour television systems
    • H04N11/06Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/143Encoding means therefor
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00Colour television systems
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00Rotary current collectors, distributors or interrupters
    • H01R39/02Details for dynamo electric machines
    • H01R39/08Slip-rings
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/698Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/18Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/77Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H04N9/78Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/01Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/143Electron beam

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a system, and a terminal for transmitting a video signal. Background technique
  • HD dome cameras In the security industry, the requirements for high-definition video images are high, especially for HD video formats such as 720p and 1080p, which have gradually become the industry standard.
  • HD dome cameras also need to meet the needs of high-definition video.
  • the HD dome camera is mainly based on the product of the network dome camera and the Serial Digital Interface (SDI) dome camera, and the movement inside the dome camera can be within 360 degrees in the horizontal direction and 90 degrees in the vertical direction. Any rotation within a degree or within 180 degrees, the movement and the main control board are connected by a conductive slip ring device, which ensures the electrical connection reliability of the movement when rotating.
  • SDI Serial Digital Interface
  • the transmission methods used mainly include the following two types:
  • the video signal output from the movement is converted into a high-definition digital component serial interface (HD-SDI) signal, which is transmitted to the control board via a conductive slip ring, but the clock frequency of the HD-SDI signal is about 1.485 GHz.
  • Digital signals with higher clock frequencies cannot be transmitted on ordinary conductive slip ring devices, and special conductive slip ring devices with expensive and complicated process complexity are required, and the signals are easily disturbed.
  • the Signaling, LVDS) signal which is transmitted to the control board via the conductive slip ring device, transmits the differential signal by using multiple channels to share the amount of data. Taking five channels as an example, the signal is transmitted at a clock frequency of 270 MHz. The frequency of the transmitted signal is still high and susceptible to interference, and the performance of the conductive slip ring device is highly demanded.
  • Due to the large increase in the number of channels and the addition of a synchronous clock it is necessary to add a plurality of transmission cables, and the volume of the conductive slip ring device is greatly increased, thereby increasing the cost. As a result, the structure of the spherical camera is limited by the volume of the conductive slip ring device, and the miniaturization design cannot be achieved.
  • the conductive slip ring device has the characteristics of discontinuous impedance and many times of switching, it has a large negative impact on the integrity of the high-frequency digital signal or analog signal, and the signal shield, thereby reducing The accuracy of transmitting video images is prone to problems such as image block, jitter, and frame loss. Also, it is possible to limit the size of the spherical camera. Summary of the invention
  • Embodiments of the present invention provide a method, apparatus, system, and terminal for transmitting a video signal, which can improve the integrity of a transmitted signal and ensure the shield of the signal.
  • An embodiment of the present invention provides a method for transmitting a video signal, including:
  • an embodiment of the present invention provides an apparatus for transmitting a video signal, including:
  • a separation module configured to separate the current original video digital signal acquired by the movement into a luminance signal and a chrominance signal
  • a conversion module configured to convert the luminance signal and the chrominance signal into a video analog signal
  • a sending module configured to send the video analog signal to the main control board through the conductive slip ring device
  • a restoration module configured to convert the video analog signal back to the current original video digital signal in the main control core board.
  • an embodiment of the present invention provides a terminal, including: the foregoing apparatus for transmitting a video signal.
  • an embodiment of the present invention provides a system for transmitting a video signal, including: a movement, an encoder, a digital-to-analog converter, a conductive slip ring device, and an analog-to-digital converter and a decoder located in the main control core board;
  • the movement is configured to acquire a current original video digital signal
  • the encoder is configured to separate the original digital signal acquired by the movement into a luminance signal and a chrominance signal; convert the luminance signal and the chrominance signal into a video analog signal in combination with the digital-to-analog converter;
  • the device transmits the video analog signal to the main control core board;
  • the analog to digital converter and decoder located in the main control board are configured to convert the video analog signal back to the current original video digital signal.
  • Embodiments of the present invention provide a method, apparatus, system, and terminal for transmitting a video signal, which are used to separate a current original video digital signal acquired by a movement into a luminance signal and a chrominance signal; and the luminance signal and the chrominance signal Converting to a video analog signal; transmitting the video analog signal to a master control board via a conductive slip ring device; converting the video analog signal back to the current raw video digital signal in the master core board.
  • the method, device, system and terminal for transmitting a video signal provided by the embodiment of the present invention obtain a video analog signal by separating the current original video digital signal into a luminance signal and a chrominance signal, and respectively performing encoding.
  • the main control board converts the video analog signal back to the original video digital signal. Thereby, the integrity of the transmitted video signal can be improved, and the shield of the video signal can be ensured.
  • FIG. 1 is a schematic flowchart of a method for transmitting a video signal according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart of a method for transmitting a video signal according to another embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of a method for transmitting a video signal according to another embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an apparatus for transmitting a video signal according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a system for transmitting a video signal according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a system for transmitting a video signal according to another embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a method for transmitting a video signal. As shown in FIG. 1, the method includes:
  • Step 101 Separating the current original video digital signal acquired by the movement into a luminance signal and a chrominance signal;
  • Step 102 converting the luminance signal and the chrominance signal into a video analog signal;
  • Step 103 Send a video analog signal to the main control core board through the conductive slip ring device;
  • Step 104 Convert the video analog signal back to the current original video digital signal in the main control board.
  • the method provided by the embodiment of the present invention converts the current original video digital signal acquired by the movement into a video analog signal for transmission.
  • the original video digital signal is first separated into a luminance signal and a chrominance signal, and then the luminance signal and the chrominance signal are converted into a video analog signal.
  • the luminance signal is processed by the digital filter, and then encoded in a baseband manner to form a luminance-encoded digital signal;
  • the chrominance signal is subjected to intermediate frequency carrier coding to form a chrominally encoded digital signal; and the luminance-encoded digital signal and the chrominance-encoded digital are used.
  • the signals are superimposed to form an encoded digital signal, they are converted into a video analog signal by digital-to-analog conversion.
  • the video analog signal is then sent to the main control board via a conductive slip ring device.
  • the main control board converts the received video analog signal back to the current original video digital signal.
  • the received video analog signal is converted into an encoded digital signal by analog-to-digital conversion; the encoded digital signal is decoded and converted back to the current original video digital signal.
  • the frequency of the video analog signal may be less than the upper limit of the electrical signal transmission of the conductive slip ring device, in order to reduce the cost and improve the reliability of the processing and transmission of the video analog signal, and avoid the wear caused by the long-term rotation of the high-rate conductive slip ring device.
  • the video analog signal in the embodiment of the present invention may be further specifically a low frequency video analog signal.
  • the brightness coded digital signal and the chrominance coded digital signal may be converted into a first analog signal and a second analog signal, respectively, and then the two analog signals are respectively converted into digital signals on the main control board end, and then superimposed, thereby
  • the video analog signal is converted back to the current original video digital signal.
  • the luminance signal is processed by the digital filter, Encoding in a baseband manner to form a luma-coded digital signal; converting the luma-coded digital signal into a first analog signal by digital-to-analog conversion; and performing IF signal encoding on the chrominance signal to form a chroma-encoded digital signal;
  • the signal is converted to a second analog signal by digital to analog conversion.
  • the first analog signal and the second analog signal are sent to the main control board through a conductive slip ring device.
  • the first analog signal is subjected to analog-to-digital conversion to be converted into a luminance-encoded digital signal; the luminance-encoded digital signal is decoded to form a luminance digital signal; and the second analog signal is subjected to analog-to-digital conversion.
  • the main control board converts the received video analog signal back to the current original video digital signal, the current original video digital signal can be sent to the main processor in the main control board for processing.
  • Step 201 Separating, from the encoder, the current original video digital signal acquired by the movement into a luminance signal and a chrominance signal;
  • Step 202 After the luminance signal is processed by the digital filter in the encoder, encoding is performed in a baseband manner to form a luminance coded digital signal; and the chrominance signal is subjected to intermediate frequency carrier coding to form a chrominance coded digital signal;
  • the movement in the HD camera can continuously acquire high-definition video in digital signal mode. Then, the movement outputs a 16-bit YCbCr format digital signal (original digital signal), and the encoder separates the current original video digital signal into a luminance signal and a chrominance signal, and processes the two signals by analog coding.
  • the luminance signal is processed by a digital filter, and then encoded in a baseband manner to form a luminance-encoded digital signal; the chrominance signal is subjected to intermediate frequency carrier coding to form a chrominally encoded digital signal.
  • the luminance signal is filtered according to the horizontal resolution of the 15 MHz digital filter, and the 18 MHz intermediate frequency carrier coding method is adopted; Format 25-frame and 30-frame HD video and 720P format 50-frame and 60-frame HD video.
  • the luminance signal is filtered according to its horizontal resolution using a 30 MHz digital filter, using a 36 MHz intermediate frequency. The way of carrier coding.
  • Step 203 The encoder superimposes the luma coded digital signal and the chroma coded digital signal to form an encoded digital signal, and sends the coded digital signal to the digital-to-analog converter. Specifically, the encoder converts the luma-encoded digital signal and color belonging to the current original video digital signal. The coded digital signals are superimposed to form an encoded digital signal.
  • Step 204 The digital-to-analog converter performs digital-to-analog conversion on the received encoded digital signal to form a video analog signal. Specifically, if the digital filter of 15 MHz and the 18 MHz intermediate frequency carrier are selected in step 202, the digital-to-analog converter is used.
  • the converted video analog signal can be up to 20MHz. Moreover, it is also possible to control the frequency of the video analog signal by selecting a digital-to-analog converter of different precision.
  • Step 205 Send an analog signal to the main control core board through the conductive slip ring device. Specifically, since the frequency of the video analog signal is low, the video analog signal is transmitted by the conductive slip ring device, and is affected by the impedance of the conductive slip ring device. The sound is small and can be neglected under ideal conditions.
  • Step 206 The analog-to-digital converter in the main control board performs analog-to-digital conversion on the received video analog signal to obtain an encoded digital signal; where the encoded digital signal is consistent with the encoded digital signal formed in step 203.
  • the analog-to-digital converter and the digital-to-analog converter have the same accuracy, which further ensures that the encoded digital signal before the digital-to-analog conversion and the analog-to-digital converted digital signal are identical.
  • Step 207 The decoder performs decoding processing on the encoded digital signal, and converts back to the current original video digital signal.
  • Step 301 Separating the original digital signal acquired by the movement into a luminance signal and a chrominance signal in the encoder.
  • Step 302 After the luminance signal is processed by the digital filter in the encoder, encoding is performed in a baseband manner to form a luminance coded digital number. a signal; performing IF carrier encoding on the chrominance signal to form a chrominally encoded digital signal;
  • the movement in the HD camera can continuously acquire high-definition video in digital signal mode. Then, the movement outputs a 16-bit YCbCr format digital signal (original digital signal), and the encoder separates the current original video digital signal into a luminance signal and a chrominance signal, and processes the two signals by analog coding.
  • the luminance signal is processed by a digital filter, and then encoded in a baseband manner to form a luminance-encoded digital signal; the chrominance signal is subjected to intermediate frequency carrier coding to form a chrominally encoded digital signal.
  • the luminance signal is filtered according to the horizontal resolution of the 15 MHz digital filter, and the 18 MHz intermediate frequency carrier coding method is adopted; Format 25-frame and 30-frame HD video and 720P format 50-frame and 60-frame HD video.
  • the luminance signal is filtered according to its horizontal resolution using a 30 MHz digital filter, using a 36 MHz intermediate frequency. The way of carrier coding.
  • Step 303 The encoder sends the luma coded digital signal to the first digital to analog converter, and sends the chroma coded digital signal to the second digital to analog converter.
  • Step 304 The first digital-to-analog converter converts the luminance-encoded digital signal into a first analog signal; and the second digital-to-analog converter converts the chroma-coded digital signal into a second analog signal;
  • Step 305 The first analog signal and the second analog signal are respectively transmitted to the main control board through the conductive slip ring device.
  • Step 307 The decoder decodes the luminance coded digital signal to form a luminance digital signal, and decodes the chroma coded digital signal to form a chrominance digital signal.
  • Step 308 The decoder superimposes the luminance digital signal and the chrominance digital signal, and converts back to the current original video digital signal.
  • Step 309 Send the current original video digital signal to the main processor in the main control board for processing.
  • an embodiment of the present invention further provides an apparatus for transmitting a video signal, as shown in FIG. 4, including:
  • a separation module 401 configured to separate the current original video digital signal acquired by the movement into a luminance signal and a chrominance signal
  • a conversion module 402 configured to convert the luminance signal and the chrominance signal into a video analog signal
  • a sending module 403 configured to send the video analog signal to the main control board through a conductive slip ring device; and a restore module 404, configured to convert the video analog signal back to the current original in the main control core board Video digital signal.
  • the wear caused by the long-term rotation of the high-rate conductive slip ring device is avoided, resulting in signal instability, and the video analog signal can be further embodied as a low-frequency video analog signal.
  • the converting module 402 is configured to perform processing by using a digital filter to form a luma-coded digital signal in a baseband manner; and performing intermediate frequency carrier encoding on the chroma signal to form a chroma encoding.
  • Digital signal superimposing the luma coded digital signal and the chroma coded digital signal to form an encoded digital signal, and then converting to a video analog signal by a digital to analog converter.
  • the restoration module 404 is specifically configured to convert the received video analog signal into the encoded digital signal by analog-to-digital conversion; decode the encoded digital signal, and convert back to the current original video number. signal.
  • the conversion module 402 is configured to perform processing by using a digital filter to form a luminance-encoded digital signal in a baseband manner; and converting the luminance-encoded digital signal into a digital-to-analog converter.
  • An analog signal; and, the chrominance signal is subjected to intermediate frequency carrier coding to form a chrominance coded digital signal; and the chrominance coded digital signal is converted into a second analog signal by a digital to analog converter.
  • the restoration module 404 is specifically configured to: after the first analog signal is subjected to analog-to-digital conversion, form the luminance-encoded digital signal; and decode the luminance-encoded digital signal to form a luminance digital signal; Converting the second analog signal to the chrominance coded digital signal by analog-to-digital conversion; decoding the chrominance coded digital signal to form a chrominance digital signal; and arranging the luminance digital signal and the chrominance number After the signals are superimposed, they are converted back to the current original video digital signal.
  • the device further comprises:
  • the processing module 405 is configured to send the current original video digital signal to the main processor in the main control board for processing after the restoration module 404 converts back the current original video digital signal.
  • an embodiment of the present invention provides a terminal, including: the foregoing apparatus for transmitting a video signal.
  • the main control board converts the video analog signal back to the original video digital signal. Thereby, the integrity of the transmitted video signal can be improved, and the shield of the video signal can be ensured.
  • an embodiment of the present invention provides a system for transmitting a video signal.
  • the system includes: a movement 501, an encoder 502, a digital-to-analog converter 503, a conductive slip ring device 504, and a master control unit.
  • the movement 501 is configured to acquire a current original video digital signal
  • the encoder 502 is configured to separate the current original video digital signal acquired by the movement 501 into a luminance signal and a chrominance signal; and convert the luminance signal and the chrominance signal into a video analog signal according to the digital-to-analog converter; Transmitting the video analog signal to the main control board 505 through the conductive slip ring device 504;
  • the analog to digital converter 506 and the decoder 507 are located in the main control board 505 for converting the video analog signal back to the current original video digital signal.
  • the wear caused by the long-term rotation of the high-rate conductive slip ring device is avoided, resulting in signal instability, and the video analog signal can be further embodied as a low-frequency video analog signal.
  • the encoder 502 processes the luminance signals through a digital filter, and performs encoding in a baseband manner to form a luminance-encoded digital signal.
  • the chrominance signal is used. Performing intermediate frequency carrier coding to form a chroma coded digital signal; superimposing the luminance signal and the chrominance signal to form an encoded digital signal; and the digital to analog converter 503 converting the encoded digital signal into a video analog signal;
  • the encoder processes the luminance signal through a digital filter, and performs coding in a baseband manner to form a luminance code.
  • a digital signal converting the luminance coded digital signal into a first analog signal by a first digital to analog converter 5031; and performing intermediate frequency carrier coding on the chrominance signal to form a chrominance coded digital signal;
  • the encoded digital signal is converted to a second analog signal by a second digital to analog converter 5032.
  • the number of the analog-to-digital converters 506 is the same as the number of the digital-to-analog converters 503, and when the digital-to-analog converter 503 is one, the analog-to-digital converter 506 The number is one, converting the received video analog signal into the encoded digital signal; the decoder 507 performs decoding processing on the encoded digital signal, and converts back to the current original video digital signal;
  • An analog-to-digital converter 5061 converts the first analog signal into an analog-coded digital signal, and converts the second analog signal to an analog-to-digital conversion Chromatically encoding a digital signal; said decoder 507 decoding said luma encoded digital signal to form a luma digital signal; decoding said chroma encoded digital signal to form a chroma digital signal; and said luminance digital signal and After the chrominance digital signals are superimposed, they are converted back to the current original video digital signal.
  • the system further comprises:
  • the main processor after converting the current original video digital signal, sends the current original video digital signal to a main processor in the main control board for processing.
  • the method, device, system and terminal for transmitting a video signal are obtained by separating the current original video digital signal into a luminance signal and a chrominance signal, and respectively performing coding, thereby obtaining Video analog signal.
  • the video analog signal is transmitted through the conductive slip ring device, although the impedance of the conductive slip ring device is discontinuous, the influence of the video analog signal on the video analog signal is negligible due to the low frequency of the video analog signal.
  • the main control board converts the video analog signal back to the original video digital signal. Thereby, the integrity of the transmitted video signal can be improved, and the shield of the video signal can be ensured.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions are provided for implementing one or more processes and/or block diagrams in the flowchart The steps of the function specified in the box or in multiple boxes.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Color Television Systems (AREA)

Abstract

本发明涉及通信领域技术,尤其涉及传输视频信号的方法、装置、系统和终端,该方法包括:将机芯获取的当前原始视频数字信号分离为亮度信号和色度信号;将所述亮度信号和色度信号转换为视频模拟信号;通过导电滑环装置将所述视频模拟信号发送到主控芯板;在所述主控芯板中将所述视频模拟信号转换回所述当前原始视频数字信号。使用本发明实施例提供的传输视频信号的方法、装置、系统和终端,可以提高传输视频信号的完整性,确保视频信号的质量。

Description

一种传输视频信号的方法、 装置、 系统和终端 本申请要求在 2012年 5月 16日提交中国专利局、 申请号为 201210156042.5、发明名称 为"一种传输视频信号的方法、 装置、 系统和终端"的中国专利申请的优先权, 其全部内容 通过引用结合在本申请中。 技术领域
本发明涉及通信领域技术, 尤其涉及一种传输视频信号的方法、 装置、 系统和终端。 背景技术
在安防行业, 针对高清视频图像的要求较高, 尤其是对 720p、 1080p等高清格式视频 的要求, 逐步成为行业标准。 目前, 高清球型摄像机也需要满足高清视频的需求。 高清球 型摄像机以网络球机、 数字分量串行接口 ( Serial Digital Interface, SDI )球机的产品形态 为主, 且为了实现球型摄像机内部的机芯可以在水平方向 360度内、 垂直方向 90度内或 180度内的任意旋转, 机芯和主控板间使用导电滑环装置连接, 这样确保了机芯在旋转时 的电气连接可靠性。 目前, 针对高清视频, 包括 720p、 1080p等高清格式的视频, 釆用的 传输方法主要包括以下两种:
一、 将机芯输出的视频信号转成高清数字分量串行接口 (HD-SDI )信号, 经导电滑环 传输至控制板, 但由于高清 HD-SDI信号的时钟频率大约为 1.485GHz。 具有较高时钟频率 的数字信号无法在普通的导电滑环装置上传输, 需要定制昂贵、 工艺复杂度的专用导电滑 环装置, 且传输信号时很容易受千扰。
二、 将机芯输出的视频信号转成多通道的低压差分信号 (Low-Voltage Differential
Signaling, LVDS )信号, 该信号经导电滑环装置传输至控制板时, 通过使用多个通道传输 该差分信号, 以便分担数据量。 以 5个通道为例, 釆用 270MHz时钟频率传输该信号, 传 输信号的频率仍然很高、 易受千扰, 并且对导电滑环装置性能有较高要求。 此外, 由于通 道数量的大幅增加、 外加同步时钟, 需要增加多条传输线缆, 而且也会导电滑环装置的体 积大幅增加, 进而增加成本。 由此, 导致球性摄像机的结构受导电滑环装置体积的限制, 无法实现小型化设计。
综上, 由于导电滑环装置存在阻抗不连续、 转接次数较多的特点, 其对高频率的数字 信号或模拟信号的完整性、 信号盾量等方面存在较大的负面影响, 由此降低了传输视频图 像的准确性, 从而容易出现图像花块、 抖动、 丢帧等问题。 并且, 有可能限制球性摄像机 的体积。 发明内容
本发明实施例提供了一种传输视频信号的方法、 装置、 系统和终端, 可以提高传输信 号的完整性, 确保信号的盾量。
本发明实施例提供了一种传输视频信号的方法, 包括:
将机芯获取的当前原始视频数字信号分离为亮度信号和色度信号;
将所述亮度信号和色度信号转换为视频模拟信号;
通过导电滑环装置将所述视频模拟信号发送到主控芯板;
在所述主控芯板中将所述视频模拟信号转换回所述当前原始视频数字信号。
相应的, 本发明实施例提供了一种传输视频信号的装置, 包括:
分离模块, 用于将机芯获取的当前原始视频数字信号分离为亮度信号和色度信号; 转换模块, 用于将所述亮度信号和色度信号转换为视频模拟信号;
发送模块, 用于通过导电滑环装置将所述视频模拟信号发送到主控芯板;
还原模块, 用于在所述主控芯板中将所述视频模拟信号转换回所述当前原始视频数字 信号。
相应的, 本发明实施例提供了一种终端, 包括: 上述传输视频信号的装置。
相应的, 本发明实施例提供了一种传输视频信号的系统, 包括: 机芯、 编码器、 数模 转换器、 导电滑环装置以及位于主控芯板中的模数转换器和解码器;
所述机芯, 用于获取当前原始视频数字信号;
所述编码器, 用于将机芯获取的原始数字信号分离为亮度信号和色度信号; 结合所述 数模转换器将所述亮度信号和色度信号转换为视频模拟信号; 通过导电滑环装置将所述视 频模拟信号发送到主控芯板;
所述位于主控芯板中的模数转换器、 解码器, 用于将所述视频模拟信号转换回所述当 前原始视频数字信号。
本发明实施例提供了一种传输视频信号的方法、 装置、 系统和终端, 用于将机芯获取 的当前原始视频数字信号分离为亮度信号和色度信号; 将所述亮度信号和色度信号转换为 视频模拟信号; 通过导电滑环装置将所述视频模拟信号发送到主控芯板; 在所述主控芯板 中将所述视频模拟信号转换回所述当前原始视频数字信号。 使用本发明实施例提供的传输 视频信号的方法、 装置、 系统和终端, 通过将当前原始视频数字信号分离为亮度信号和色 度信号, 并分别进行编码, 进而获得视频模拟信号。 该视频模拟信号通过导电滑环装置传 输时, 虽然导电滑环装置的阻抗不连续, 但是由于视频模拟信号的频率较低, 其对视频模 拟信号的影响可以忽略不计。 相应的, 主控芯板再将视频模拟信号转换回原始视频数字信 号。 由此, 可以提高传输视频信号的完整性, 确保视频信号的盾量。 附图说明
图 1为本发明实施例中传输视频信号的方法流程示意图;
图 2为本发明另一实施例中传输视频信号的方法流程示意图;
图 3为本发明另一实施例中传输视频信号的方法流程示意图;
图 4为本发明实施例中传输视频信号的装置示意图;
图 5为本发明实施例中传输视频信号的系统示意图;
图 6为本发明另一实施例中传输视频信号的系统示意图。 具体实施方式
下面结合各个附图对本发明实施例技术方案的主要实现原理、 具体实施方式及其对应 能够达到的有益效果进行详细地阐述。
为了解决现有技术存在的问题, 本发明实施例提供了一种传输视频信号的方法, 如图 1所示, 该方法包括:
步骤 101、 将机芯获取的当前原始视频数字信号分离为亮度信号和色度信号; 步骤 102、 将亮度信号和色度信号转换为视频模拟信号;
步骤 103、 通过导电滑环装置将视频模拟信号发送到主控芯板;
步骤 104、 在主控芯板中将视频模拟信号转换回当前原始视频数字信号。
针对现有技术存在的缺点, 本发明实施例提供的方法将机芯获取的当前原始视频数字 信号转换为视频模拟信号进行传输。 其中, 先将原始视频数字信号分离为亮度信号和色度 信号, 然后将亮度信号和色度信号转换为视频模拟信号。 具体的, 将亮度信号通过数字滤 波器处理后,以基带方式进行编码形成亮度编码数字信号;将色度信号进行中频载波编码, 形成色度编码数字信号; 将亮度编码数字信号和色度编码数字信号进行叠加形成编码数字 信号后, 通过数模转换转换为视频模拟信号。 然后, 通过导电滑环装置将该视频模拟信号 发送到主控芯板。相应的,主控芯板将接收的视频模拟信号转换回当前原始视频数字信号。 具体的, 将接收的视频模拟信号通过模数转换, 转换为编码数字信号; 对编码数字信号进 行解码处理, 转换回当前原始视频数字信号。
其中, 视频模拟信号的频率只要小于导电滑环装置的电信号传输上限即可, 为了降低 成本并提高视频模拟信号处理和传输的可靠性, 避免高速率导电滑环装置长时间转动造成 的磨损, 导致信号不稳定, 本发明实施例中的视频模拟信号可以进一步具体为低频视频模 拟信号。
上述亮度编码数字信号和色度编码数字信号可以分别转换为第一模拟信号和第二模 拟信号, 然后在主控芯板端将该两个模拟信号分别转换为数字信号后再进行叠加, 从而将 视频模拟信号转换回当前原始视频数字信号。具体的,将亮度信号通过数字滤波器处理后, 以基带方式进行编码形成亮度编码数字信号; 将亮度编码数字信号通过数模转换转换为第 一模拟信号; 并且, 将色度信号进行中频载波编码, 形成色度编码数字信号; 将色度编码 数字信号通过数模转换转换为第二模拟信号。 通过导电滑环装置将该第一模拟信号和第二 模拟信号发送到主控芯板。 相应的, 在主控芯板端, 将第一模拟信号经过模数转换, 转换 为亮度编码数字信号; 对亮度编码数字信号进行解码, 形成亮度数字信号; 将第二模拟信 号通过模数转换, 转换为色度编码数字信号; 对色度编码数字信号进行解码, 形成色度数 字信号; 将亮度数字信号和色度数字信号进行叠加后, 转换回当前原始视频数字信号。 主 控芯板将接收到的视频模拟信号转换回当前原始视频数字信号之后 , 可以将当前原始视频 数字信号发送到主控芯板中的主处理器进行处理。
下面通过具体实施例对上述内容进行详细描述, 将当前原始视频数字信号转换为一路 模拟信号通过导电滑环装置发送到主控芯板时, 如图 2所示, 包括以下步骤:
步骤 201、 在编码器内将机芯获取的当前原始视频数字信号分离为亮度信号和色度信 号;
步骤 202、 在编码器内将亮度信号通过数字滤波器处理后, 以基带方式进行编码形成 亮度编码数字信号; 将色度信号进行中频载波编码, 形成色度编码数字信号;
具体的, 高清摄像机中的机芯可以不断获取数字信号模式的高清视频。 然后, 机芯输 出 16比特位的 YCbCr格式数字信号(原始数字信号), 编码器将当前原始视频数字信号分 离为亮度信号和色度信号, 并釆用模拟编码的方式对这两种信号进行处理。 例如, 将亮度 信号通过数字滤波器处理后, 以基带方式进行编码形成亮度编码数字信号; 将色度信号进 行中频载波编码, 形成色度编码数字信号。 其中, 针对 720P格式的 25帧和 30帧高清视 频, 为了得到视频模拟信号, 根据其水平分辨率釆用 15MHz 的数字滤波器对该亮度信号 进行滤波, 釆用 18MHz中频载波编码的方式; 针对 1080P格式的 25帧和 30帧高清视频 以及 720P格式的 50帧和 60帧高清视频, 为了得到视频模拟信号, 根据其水平分辨率釆 用 30MHz的数字滤波器对该亮度信号进行滤波, 釆用 36MHz中频载波编码的方式。
步骤 203、 编码器将亮度编码数字信号和色度编码数字信号进行叠加形成编码数字信 号, 并发送到数模转化器; 具体的, 编码器将属于当前原始视频数字信号的亮度编码数字 信号和色度编码数字信号叠加在一起, 形成编码数字信号。
步骤 204、 数模转化器将接收的编码数字信号进行数模转换, 形成视频模拟信号; 具 体的, 若步骤 202内选用 15MHz的数字滤波器和 18MHz中频载波编码的方式, 则经过数 模转化器转换后输出的视频模拟信号可以达到 20MHz 以内。 而且, 还可以通过选用不同 精度的数模转化器, 进而控制视频模拟信号的频率。
步骤 205、 通过导电滑环装置将模拟信号发送到主控芯板; 具体的, 由于视频模拟信 号的频率较低 , 因此视频模拟信号通过导电滑环装置传输时, 受到导电滑环装置阻抗的影 响较小, 在理想状态下可以忽略不计。
步骤 206、 主控芯板中的模数转换器对接收的视频模拟信号进行模数转换, 获得编码 数字信号; 此处的编码数字信号与步骤 203中形成的编码数字信号一致。 较佳的, 该模数 转换器和上述数模转换器的精度相同, 这样可以进一步确保通过数模转换前的编码数字信 号和模数转换后的编码数字信号一致。
步骤 207、 解码器对编码数字信号进行解码处理, 转换回上述当前原始视频数字信号; 步骤 208、 主处理器对当前原始视频数字信号进行后续处理。
将原始数字信号转换为两路视频模拟信号通过导电滑环装置发送到主控芯板时, 如图 3所示, 包括以下步骤:
步骤 301、 在编码器内将机芯获取的原始数字信号分离为亮度信号和色度信号; 步骤 302、 在编码器内将亮度信号通过数字滤波器处理后, 以基带方式进行编码形成 亮度编码数字信号; 将色度信号进行中频载波编码, 形成色度编码数字信号;
具体的, 高清摄像机中的机芯可以不断获取数字信号模式的高清视频。 然后, 机芯输 出 16比特位的 YCbCr格式数字信号(原始数字信号), 编码器将当前原始视频数字信号分 离为亮度信号和色度信号, 并釆用模拟编码的方式对这两种信号进行处理。 例如, 将亮度 信号通过数字滤波器处理后, 以基带方式进行编码形成亮度编码数字信号; 将色度信号进 行中频载波编码, 形成色度编码数字信号。 其中, 针对 720P格式的 25帧和 30帧高清视 频, 为了得到视频模拟信号, 根据其水平分辨率釆用 15MHz 的数字滤波器对该亮度信号 进行滤波, 釆用 18MHz中频载波编码的方式; 针对 1080P格式的 25帧和 30帧高清视频 以及 720P格式的 50帧和 60帧高清视频, 为了得到视频模拟信号, 根据其水平分辨率釆 用 30MHz的数字滤波器对该亮度信号进行滤波, 釆用 36MHz中频载波编码的方式。
步骤 303、 编码器将亮度编码数字信号发送到第一数模转换器, 将色度编码数字信号 发送到第二数模转换器;
步骤 304、 第一数模转换器将亮度编码数字信号转换为第一模拟信号; 第二数模转换 器将色度编码数字信号转换为第二模拟信号;
步骤 305、 通过导电滑环装置将第一模拟信号和第二模拟信号分别传输到主控芯板; 步骤 306、 主控芯板中的第一模数转换器将第一模拟信号转换为亮度编码数字信号, 第二模数转换器将第二模拟信号转换为色度编码数字信号;
步骤 307、 解码器对亮度编码数字信号进行解码, 形成亮度数字信号; 对色度编码数 字信号进行解码, 形成色度数字信号;
步骤 308、 解码器将亮度数字信号和色度数字信号进行叠加后, 转换回当前原始视频 数字信号;
步骤 309、 将当前原始视频数字信号发送到主控芯板中的主处理器进行处理。 通过上述描述, 可以看出, 使用本发明实施例提供的传输视频信号的方法, 通过将当 前原始视频数字信号分离为亮度信号和色度信号, 并分别进行编码, 进而获得视频模拟信 号。 该视频模拟信号通过导电滑环装置传输时, 虽然导电滑环装置的阻抗不连续, 但是由 于视频模拟信号的频率较低, 其对视频模拟信号的影响可以忽略不计。 相应的, 主控芯板 再将视频模拟信号转换回原始视频数字信号。 由此, 可以提高传输视频信号的完整性, 确 保视频信号的盾量。
基于同一发明构思, 本发明实施例还提供了一种传输视频信号的装置, 如图 4所示, 包括:
分离模块 401 ,用于将机芯获取的当前原始视频数字信号分离为亮度信号和色度信号; 转换模块 402, 用于将所述亮度信号和色度信号转换为视频模拟信号;
发送模块 403 , 用于通过导电滑环装置将所述视频模拟信号发送到主控芯板; 还原模块 404, 用于在所述主控芯板中将所述视频模拟信号转换回所述当前原始视频 数字信号。
进一步, 为了降低成本并提高视频模拟信号处理和传输的可靠性, 避免高速率导电滑 环装置长时间转动造成的磨损, 导致信号不稳定, 视频模拟信号可以进一步具体为低频视 频模拟信号。
较佳的, 所述转换模块 402, 用于将所述亮度信号通过数字滤波器处理后, 以基带方 式进行编码形成亮度编码数字信号; 将所述色度信号进行中频载波编码, 形成色度编码数 字信号; 将所述亮度编码数字信号和所述色度编码数字信号进行叠加形成编码数字信号 后, 通过数模转换器转换为视频模拟信号。 较佳的, 所述还原模块 404, 具体用于将接收 的视频模拟信号通过模数转换, 转换为所述编码数字信号; 对所述编码数字信号进行解码 处理, 转换回所述当前原始视频数字信号。
较佳的, 所述转换模块 402, 用于将所述亮度信号通过数字滤波器处理后, 以基带方 式进行编码形成亮度编码数字信号; 将所述亮度编码数字信号通过数模转换器转换为第一 模拟信号; 并且, 将所述色度信号进行中频载波编码, 形成色度编码数字信号; 将所述色 度编码数字信号通过数模转换器转换为第二模拟信号。 较佳的, 所述还原模块 404, 具体 用于将所述第一模拟信号经过模数转换后, 形成所述亮度编码数字信号; 对所述亮度编码 数字信号进行解码, 形成亮度数字信号; 将所述第二模拟信号通过模数转换, 转换为所述 色度编码数字信号; 对所述色度编码数字信号进行解码, 形成色度数字信号; 将所述亮度 数字信号和所述色度数字信号进行叠加后, 转换回所述当前原始视频数字信号。
较佳的, 该装置还包括:
处理模块 405 , 用于所述还原模块 404转换回所述当前原始视频数字信号之后, 将所 述当前原始视频数字信号发送到所述主控芯板中的主处理器进行处理。 基于同一发明构思, 本发明实施例提供了一种终端, 包括: 上述传输视频信号的装置。 通过上述描述, 可以看出, 使用本发明实施例提供的传输视频信号的装置, 通过将当 前原始视频数字信号分离为亮度信号和色度信号, 并分别进行编码, 进而获得视频模拟信 号。 该视频模拟信号通过导电滑环装置传输时, 虽然导电滑环装置的阻抗不连续, 但是由 于视频模拟信号的频率较低, 其对视频模拟信号的影响可以忽略不计。 相应的, 主控芯板 再将视频模拟信号转换回原始视频数字信号。 由此, 可以提高传输视频信号的完整性, 确 保视频信号的盾量。
基于同一发明构思, 本发明实施例提供了一种传输视频信号的系统, 如图 5所示, 包 括: 机芯 501、 编码器 502、 数模转换器 503、 导电滑环装置 504以及位于主控芯板 505中 的模数转换器 506和解码器 507;
所述机芯 501 , 用于获取当前原始视频数字信号;
所述编码器 502 , 用于将机芯 501获取的当前原始视频数字信号分离为亮度信号和色 度信号; 结合所述数模转换器将所述亮度信号和色度信号转换为视频模拟信号; 通过导电 滑环装置 504将所述视频模拟信号发送到主控芯板 505 ;
所述位于主控芯板 505 中的模数转换器 506、 解码器 507 , 用于将所述视频模拟信号 转换回所述当前原始视频数字信号。
进一步, 为了降低成本并提高视频模拟信号处理和传输的可靠性, 避免高速率导电滑 环装置长时间转动造成的磨损, 导致信号不稳定, 视频模拟信号可以进一步具体为低频视 频模拟信号。
较佳的, 所述数模转换器 503的数目为一时, 所述编码器 502将所述亮度信号通过数 字滤波器处理后, 以基带方式进行编码形成亮度编码数字信号; 将所述色度信号进行中频 载波编码, 形成色度编码数字信号; 将所述亮度信号和所述色度信号进行叠加形成编码数 字信号; 所述数模转换器 503将所述编码数字信号转换为视频模拟信号;
如图 6所示, 在图 5的基础上, 所述数模转换器的数目为二个时, 所述编码器将所述 亮度信号通过数字滤波器处理后, 以基带方式进行编码形成亮度编码数字信号; 将所述亮 度编码数字信号通过第一数模转换器 5031 转换为第一模拟信号; 并且, 将所述色度信号 进行中频载波编码, 形成色度编码数字信号; 将所述色度编码数字信号通过第二数模转换 器 5032转换为第二模拟信号。
较佳的,如图 5所示,所述模数转换器 506的数目与所述数模转换器 503的数目相同, 所述数模转换器 503为一个时, 所述模数转换器 506的数目为一个, 将接收的视频模拟信 号转换为所述编码数字信号; 所述解码器 507对所述编码数字信号进行解码处理, 转换回 所述当前原始视频数字信号;
如图 6所示, 当所述数模转换器的数目为二个时, 所述模数转换器的数目为二个, 第 一模数转换器 5061 将所述第一模拟信号经过模数转换, 转换为所述亮度编码数字信号; 第二模数转换器 5062将所述第二模拟信号通过模数转换, 转换为所述色度编码数字信号; 所述解码器 507对所述亮度编码数字信号进行解码, 形成亮度数字信号; 对所述色度编码 数字信号进行解码, 形成色度数字信号; 将所述亮度数字信号和所述色度数字信号进行叠 加后, 转换回所述当前原始视频数字信号。
较佳的, 该系统还包括:
主处理器, 用于转换回所述当前原始视频数字信号之后, 将所述当前原始视频数字信 号发送到所述主控芯板中的主处理器进行处理。
通过上述描述, 可以看出, 使用本发明实施例提供的传输视频信号的方法、 装置、 系 统和终端, 通过将当前原始视频数字信号分离为亮度信号和色度信号, 并分别进行编码, 进而获得视频模拟信号。 该视频模拟信号通过导电滑环装置传输时, 虽然导电滑环装置的 阻抗不连续,但是由于视频模拟信号的频率较低 ,其对视频模拟信号的影响可以忽略不计。 相应的, 主控芯板再将视频模拟信号转换回原始视频数字信号。 由此, 可以提高传输视频 信号的完整性, 确保视频信号的盾量。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产 品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实 施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介盾 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上实施的计算机程 序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种传输视频信号的方法, 其特征在于, 包括:
将机芯获取的当前原始视频数字信号分离为亮度信号和色度信号;
将所述亮度信号和色度信号转换为视频模拟信号;
通过导电滑环装置将所述视频模拟信号发送到主控芯板;
在所述主控芯板中将所述视频模拟信号转换回所述当前原始视频数字信号。
2、 如权利要求 1 所述的方法, 其特征在于, 所述视频模拟信号具体为: 低频视频模 拟信号。
3、 如权利要求 2 所述的方法, 其特征在于, 将所述亮度信号和色度信号转换为视频 模拟信号, 包括:
将所述亮度信号通过数字滤波器处理后, 以基带方式进行编码形成亮度编码数字信 号;
将所述色度信号进行中频载波编码, 形成色度编码数字信号;
将所述亮度编码数字信号和所述色度编码数字信号进行叠加形成编码数字信号后, 通 过数模转换转换为视频模拟信号。
4、 如权利要求 3 所述的方法, 其特征在于, 在所述主控芯板中将所述模拟信号转换 回所述当前原始视频数字信号, 包括:
将接收的视频模拟信号通过模数转换, 转换为所述编码数字信号;
对所述编码数字信号进行解码处理, 转换回所述当前原始视频数字信号。
5、 如权利要求 2 所述的方法, 其特征在于, 将所述亮度信号和色度信号转换为视频 模拟信号, 包括:
将所述亮度信号通过数字滤波器处理后, 以基带方式进行编码形成亮度编码数字信 号; 将所述亮度编码数字信号通过数模转换转换为第一模拟信号;
并且, 将所述色度信号进行中频载波编码, 形成色度编码数字信号; 将所述色度编码 数字信号通过数模转换转换为第二模拟信号。
6、 如权利要求 5 所述的方法, 其特征在于, 在所述主控芯板中将所述模拟信号转换 回所述当前原始视频数字信号, 包括:
将所述第一模拟信号经过模数转换, 转换为所述亮度编码数字信号; 对所述亮度编码 数字信号进行解码, 形成亮度数字信号;
将所述第二模拟信号通过模数转换, 转换为所述色度编码数字信号; 对所述色度编码 数字信号进行解码, 形成色度数字信号;
将所述亮度数字信号和所述色度数字信号进行叠加后, 转换回所述当前原始视频数字 信号。
7、 如权利要求 2或 4或 6所述的方法, 其特征在于, 所述在所述主控芯板中将所述 视频模拟信号转换回所述当前原始视频数字信号之后 , 该方法还包括:
将所述当前原始视频数字信号发送到所述主控芯板中的主处理器进行处理。
8、 一种传输视频信号的装置, 其特征在于, 包括:
分离模块, 用于将机芯获取的当前原始视频数字信号分离为亮度信号和色度信号; 转换模块, 用于将所述亮度信号和色度信号转换为视频模拟信号;
发送模块, 用于通过导电滑环装置将所述视频模拟信号发送到主控芯板;
还原模块, 用于在所述主控芯板中将所述视频模拟信号转换回所述当前原始视频数字 信号。
9、 如权利要求 8 所述的装置, 其特征在于, 所述视频模拟信号具体为: 低频视频模 拟信号。
10、 如权利要求 9所述的装置, 其特征在于, 所述转换模块具体用于: 将所述亮度信 号通过数字滤波器处理后, 以基带方式进行编码形成亮度编码数字信号; 将所述色度信号 进行中频载波编码, 形成色度编码数字信号; 将所述亮度编码数字信号和所述色度编码数 字信号进行叠加形成编码数字信号后, 通过数模转换器转换为视频模拟信号。
11、 如权利要求 10所述的装置, 其特征在于, 所述还原模块具体用于: 将接收的视频 模拟信号通过模数转换, 转换为所述编码数字信号; 对所述编码数字信号进行解码处理, 转换回所述当前原始视频数字信号。
12、 如权利要求 9所述的装置, 其特征在于, 所述转换模块具体用于: 将所述亮度信 号通过数字滤波器处理后, 以基带方式进行编码形成亮度编码数字信号; 将所述亮度编码 数字信号通过数模转换器转换为第一模拟信号; 并且,将所述色度信号进行中频载波编码, 形成色度编码数字信号; 将所述色度编码数字信号通过数模转换器转换为第二模拟信号。
13、 如权利要求 12 所述的装置, 其特征在于, 所述还原模块具体用于: 将所述第一 模拟信号经过模数转换后, 形成所述亮度编码数字信号; 对所述亮度编码数字信号进行解 码, 形成亮度数字信号; 将所述第二模拟信号通过模数转换, 转换为所述色度编码数字信 号; 对所述色度编码数字信号进行解码, 形成色度数字信号; 将所述亮度数字信号和所述 色度数字信号进行叠加后, 转换回所述当前原始视频数字信号。
14、 如权利要求 9或 11或 13所述的装置, 其特征在于, 该装置还包括:
处理模块, 用于在所述还原模块在所述主控芯板中将所述视频模拟信号转换回所述当 前原始视频数字信号之后, 将所述当前原始视频数字信号发送到所述主控芯板中的主处理 器进行处理。
15、 一种终端, 其特征在于, 包括: 如权利要求 8-14中任一所述的传输视频信号的装 置。
16、 一种传输视频信号的系统, 其特征在于, 包括: 机芯、 编码器、 数模转换器、 导 电滑环装置以及位于主控芯板中的模数转换器和解码器;
所述机芯, 用于获取当前原始视频数字信号;
所述编码器, 用于将机芯获取的当前原始视频数字信号分离为亮度信号和色度信号; 结合所述数模转换器将所述亮度信号和色度信号转换为视频模拟信号; 通过导电滑环装置 将所述视频模拟信号发送到主控芯板;
所述位于主控芯板中的模数转换器、 解码器, 用于将所述视频模拟信号转换回所述当 前原始视频数字信号。
17、 如权利要求 16 所述的系统, 其特征在于, 所述视频模拟信号具体为: 视频模拟 信号。
18、 如权利要求 17 所述的系统, 其特征在于, 当该系统包括一个数模转换器时, 所 述编码器将所述亮度信号通过数字滤波器处理后, 以基带方式进行编码形成亮度编码数字 信号; 将所述色度信号进行中频载波编码, 形成色度编码数字信号; 将所述亮度信号和所 述色度信号进行叠加形成编码数字信号; 所述数模转换器将所述编码数字信号转换为视频 模拟信号;
当该系统包括两个数模转换器时, 所述编码器将所述亮度信号通过数字滤波器处理 后, 以基带方式进行编码形成亮度编码数字信号; 将所述亮度编码数字信号通过第一数模 转换器转换为第一模拟信号; 并且, 将所述色度信号进行中频载波编码, 形成色度编码数 字信号; 将所述色度编码数字信号通过第二数模转换器转换为第二模拟信号。
19、 如权利要求 18 所述的系统, 其特征在于, 所述模数转换器的数目与所述数模转 换器的数目相同;
当该系统包括一个数模转换器和一个模数转换器时, 所述模数转换器将接收的视频模 拟信号转换为所述编码数字信号; 所述解码器对所述编码数字信号进行解码处理, 转换回 所述当前原始视频数字信号;
当该系统包括两个数模转换器和两个模数转换器时, 第一模数转换器将所述第一模拟 信号经过模数转换, 转换为所述亮度编码数字信号; 第二模数转换器将所述第二模拟信号 通过模数转换, 转换为所述色度编码数字信号; 所述解码器对所述亮度编码数字信号进行 解码, 形成亮度数字信号; 对所述色度编码数字信号进行解码, 形成色度数字信号; 将所 述亮度数字信号和所述色度数字信号进行叠加后, 转换回所述当前原始视频数字信号。
20、 如权利要求 18所述的系统, 其特征在于, 该系统还包括:
主处理器, 用于在所述位于主控芯板中的模数转换器、 解码器将所述视频模拟信号转 换回所述当前原始视频数字信号之后 , 将所述当前原始视频数字信号发送到所述主控芯板 中的主处理器进行处理。
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CN102724517B (zh) 2014-06-04
US9578297B2 (en) 2017-02-21
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US20150070589A1 (en) 2015-03-12

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