WO2015143935A1 - 一种智能信息传输方法、系统和装置 - Google Patents

一种智能信息传输方法、系统和装置 Download PDF

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Publication number
WO2015143935A1
WO2015143935A1 PCT/CN2015/070826 CN2015070826W WO2015143935A1 WO 2015143935 A1 WO2015143935 A1 WO 2015143935A1 CN 2015070826 W CN2015070826 W CN 2015070826W WO 2015143935 A1 WO2015143935 A1 WO 2015143935A1
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Prior art keywords
video data
information
smart information
payload
smart
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PCT/CN2015/070826
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English (en)
French (fr)
Inventor
祁金红
黄田
俞海
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杭州海康威视数字技术股份有限公司
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Priority to US15/128,369 priority Critical patent/US10032432B2/en
Priority to EP15769626.1A priority patent/EP3125543B1/en
Publication of WO2015143935A1 publication Critical patent/WO2015143935A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/12—Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2358/00—Arrangements for display data security
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/18—Use of a frame buffer in a display terminal, inclusive of the display panel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/23602—Multiplexing isochronously with the video sync, e.g. according to bit-parallel or bit-serial interface formats, as SDI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4342—Demultiplexing isochronously with video sync, e.g. according to bit-parallel or bit-serial interface formats, as SDI

Definitions

  • the present invention relates to the field of intelligent transportation, and in particular, to an intelligent information transmission method, system and device.
  • the existing intelligent transportation integrated machine generally has the functions of collecting and generating video data (ie, image data), and has the function of generating intelligent information by using an intelligent algorithm integrated by itself, and the intelligent information may include: license plate information and vehicle characteristics (such as body color, model) and illegal types.
  • the video data is transmitted to the terminal server through a digital serial interface (SDI), and the intelligent information is transmitted to the terminal server through the IP network.
  • SDI digital serial interface
  • the present invention provides an intelligent information transmission method, system and device, which can reduce implementation cost and improve security.
  • the digital serial interface SDI transmitting end determines whether there is intelligent information that satisfies the transmission condition; the intelligent information that satisfies the transmission condition includes: no transmission, and a corresponding one-frame video Intelligent information that the data has been transmitted;
  • a piece of intelligent information y that satisfies the transmission condition is embedded in a predetermined position in the video data x, and the video data x embedded in the smart information y is transmitted.
  • An intelligent information transmission system comprising:
  • the digital serial interface SDI transmitting end is configured to perform, when each frame of video data x needs to be transmitted, the following processing: determining whether there is intelligent information that satisfies the transmission condition; and the intelligent information that satisfies the transmission condition includes: not transmitting, And the corresponding intelligent information of one frame of video data has been transmitted; if yes, a smart information y that satisfies the transmission condition is embedded in a predetermined position in the video data x, and the video data x embedded in the smart information y is embedded Transfer.
  • An intelligent information transmission device comprising:
  • a first processing module configured to determine, when each frame of video data x needs to be transmitted, whether there is intelligent information that satisfies a transmission condition; the intelligent information that satisfies the transmission condition includes: not transmitting, and a corresponding one frame of video The intelligent information that the data has been transmitted; if yes, the second processing module is notified to perform its own function;
  • the second processing module is configured to embed a piece of intelligent information y that satisfies the transmission condition into a predetermined position in the video data x, and transmit the video data x embedded in the smart information y.
  • the intelligent information can be embedded into the video data for transmission, that is, the intelligent information is transmitted based on the SDI, so that the existing coaxial line can be utilized, and the IP network is not required to be disposed, thereby reducing The cost of implementation; and, compared to the IP network, SDI is relatively closed, so that the security is higher, thereby improving the security of intelligent information.
  • FIG. 1 is a flowchart of an embodiment of an intelligent information transmission method according to the present invention.
  • FIG. 2 is a schematic diagram of the first two lines and the last two lines of valid data in the video data x according to the embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a structure of a Header according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of an intelligent information processing method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an embodiment of an intelligent information transmission system according to the present invention.
  • FIG. 6 is a schematic structural diagram of an embodiment of an intelligent information transmission apparatus according to the present invention.
  • an intelligent information transmission scheme is proposed in the present invention, which can reduce implementation cost and improve security.
  • FIG. 1 is a flowchart of an embodiment of an intelligent information transmission method according to the present invention. As shown in Figure 1, the following steps are included.
  • Step 11 When it is required to transmit one frame of video data x, the SDI transmitting end determines whether there is intelligent information that satisfies the transmission condition; the satisfying transmission condition includes: no transmission is performed, and a corresponding one frame of video data has been transmitted. If yes, go to step 12, otherwise, go to step 13.
  • the video data is transmitted in units of frames and transmitted through SDI, and the SDI transmitting end may be an intelligent transportation integrated machine or the like.
  • the frame video data is transmitted first, and then the smart information corresponding to the frame video data is transmitted.
  • the intelligent information that satisfies the transmission condition described in this step needs to be intelligent information that has not been transmitted and whose corresponding one-frame video data has been transmitted.
  • the intelligent information that satisfies the transmission condition may be one, or may be multiple, or may be zero. If there is at least one or more pieces of intelligent information that satisfy the condition, step 12 is performed. Otherwise, go to step 13.
  • Step 12 The SDI transmitting end embeds a piece of intelligent information y satisfying the transmission condition into a predetermined position in the video data x, and transmits the video data x embedded in the smart information y.
  • the piece of intelligent information can be embedded in a predetermined position in the video data x. If there are multiple pieces of intelligent information satisfying the transmission condition, one piece can be selected and embedded in the video.
  • the predetermined position in the data x There is no restriction on how to select, for example, an intelligent information in which the corresponding video data is transmitted first is selected.
  • video data x is used to represent any frame of video data that needs to be transmitted
  • smart information y is used to represent a piece of smart information embedded in video data x.
  • the SDI protocol standard specifies that it supports a maximum frequency of 3.0G, a maximum resolution of 1920 ⁇ 1080, and supports lossless audio and video transmission.
  • the location in which the smart information y is embedded in the video data x may include any of the following positions: the first two lines of valid data in the video data x, and the last two lines of valid data in the video data x Frame blanking line in line, video data x.
  • 2 is a schematic diagram of the first two lines and the last two lines of valid data in the video data x of the present invention.
  • the smart information y can be embedded in the above position in the video data x in the form of a smart header + intelligent information payload (payload).
  • the Header may include: a TIME_STAMP_V field, a TIME_STAMP_I field, and a V field; the TIME_STAMP_V field carries a timestamp of the video data x, and the TIME_STAMP_I field carries a timestamp of the video data corresponding to the smart information y, and the V field carries an indication A valid identifier for the content carried in Payload; carried in Payload Intelligent information y.
  • the Header may further include: a PAYLOAD_LENGTH field, an REV field, and VMAIN, VSUB, and VMOD fields.
  • the length information of the smart information y is carried in the PAYLOAD_LENGTH field, in units of 32 bytes, that is, if the length of the smart information y is 32 bytes, the record in the field is 1, if the length of the smart information y is 64 words. Section, the record in this field is 2; REV field is reserved field for flexible expansion; VMAIN, VSUB and VMOD fields are used to distinguish smart information without version.
  • the smart information may be encapsulated in a smart information payload of a smart information element, the smart information element being embedded in a predetermined location in the video data x.
  • the smart information element includes a smart information head (Header) and a Payload.
  • the contents included in the Header and the Payload are the same as those included in the Header and the Payload in the smart information y, and are not described here.
  • Fig. 3 is a schematic view showing the structure of a header of the present invention.
  • the size of the Header can be 128 bytes, and the size of each field can be referred to as shown in the figure.
  • the Payload is usually 512 bytes at most.
  • Each row as shown in Figure 2 can theoretically support the embedding of 1920 x 2 bytes of intelligent information.
  • you want to embed the smart information y you only need to occupy one line, as shown in the 0th line in Figure 2.
  • the smart information y is large and one line is not enough, it can occupy two lines at the same time. , as shown in Figure 2, line 0 and line 1.
  • Step 13 The SDI sender performs processing in a predetermined manner.
  • the following predetermined manner may be used for processing: as shown in FIG.
  • the TIME_STAMP_V field carries the timestamp of the video data x, and the V field carries an identifier indicating that the content carried in the Payload is invalid.
  • the Payload may be empty or carry data that the location should originally transmit, such as video data, carried in other fields. Information is not limited.
  • the identifier carried in the V field indicating that the content carried in the Payload is invalid may be 0, and the identifier indicating that the content carried in the Payload is valid may be 1.
  • the SDI receiving end may be a terminal server or the like.
  • the SDI receiver After receiving the video data x, the SDI receiver can perform the following processing:
  • Step 41 Determine whether the content carried in the Payload is valid according to the identifier carried in the V field in the video data x. If yes, perform step B. Otherwise, the method may be processed according to a predetermined manner, which is not limited.
  • Step 42 Extract the smart information y in the Payload, and determine the timestamp carried in the TIME_STAMP_V field in the frame video data and the TIME_STAMP_I in the video data x for each frame of video data received except the video data x. Whether the timestamps carried in the fields are the same. If so, the frame video data is matched with the smart information y.
  • the matching refers to realizing synchronization of the smart information y and its corresponding video data at the SDI receiving end.
  • the smart information y carried in the Payload may be extracted, and the timestamp and the time carried in the TIME_STAMP_V field are searched from each received video data except the video data x.
  • a buffer pool can be established in advance.
  • the SDI receiving end can add it to the buffer pool first, and then
  • the content carried in the Payload is determined according to the identifier carried in the V field in the video data x. For example, if the identifier is 1, it indicates that the content is valid. If yes, the timestamp carried in the TIME_STAMP_V field in the frame video data and the timestamp carried in the TIME_STAMP_I field in the video data x are respectively determined for each frame of video data saved in the buffer pool except for the video data x. Is it the same? If so, the frame video data is matched with the smart information y, and the frame video data is deleted from the buffer pool.
  • the video data with the smallest timestamp carried in the TIME_STAMP_V field may be preferentially deleted.
  • the size of the buffer pool can be determined according to actual needs. It is usually not too small to prevent the case where the matching video data has been deleted when the smart information y is matched.
  • the SDI transmitting end and the SDI receiving end need to preset the embedded position of the intelligent information y, that is, the SDI transmitting end and the SDI receiving end are all known to be the same.
  • the embedded location of the smart information y is not known to be the same.
  • the method of the present invention may further include the following operations.
  • the video data x after the embedded smart information y can be transmitted.
  • the following processing is performed: for each byte in the smart information y, it is split into two bytes by bit operation, and two bytes are transmitted adjacently.
  • one bit operation bit a (1 ⁇ a ⁇ 7) can be used, and 8 bits of each byte are split into a bit and (8-a) bit, and then two bytes are generated by 0x80. Different values of a A different two bytes can be generated.
  • B0 ((A
  • 0x80) and B1 ((A>>a)
  • A represents any byte before splitting
  • ⁇ indicates a negation
  • ⁇ indicates a shift to the left.
  • Table 1 corresponds to B0 and B1 of different values respectively.
  • the SDI receiving end may further perform the following processing: each byte in the pre-split intelligent information y is restored by the inverse operation of the bit bit operation.
  • A (B1 ⁇ ⁇ a)
  • the SDI transmitting end will embed the intelligent information y.
  • the following processing may be performed: the smart information y is copied into M shares, and the M is even, so that a total of M+1 pieces of intelligent information y are obtained, which are carried in the Payload for transmission.
  • the SDI receiving end may further perform the following processing: determining whether the extracted M+1 pieces of intelligent information y are the same; if they are all the same, continuing the subsequent processing; If they are different, they are all discarded, and End processing; if the same number of copies m is greater than (M+1)/2 but less than M+1, the M+1-m shares that are different from the m shares are discarded, and the subsequent processing is continued.
  • the SDI receiving end may further perform the following processing: if the same number of copies m in the M+1 copies of the smart information y is equal to (M+1), Then, the subsequent processing is continued; if the same number of copies m is greater than (M+1)/2 but less than M+1, then M+1-m shares that are different from the m shares are discarded; if the same number of copies m is smaller than (M+1)/2, all discarded.
  • the specific value of M can be determined according to actual needs.
  • the value of M may be 2.
  • the one copy may be discarded.
  • the error correction processing at the SDI transmitting end can be performed before the pre-processing or after the pre-processing.
  • the error correction processing at the SDI receiving end can be performed before post processing or after post processing.
  • FIG. 4 is a schematic structural diagram of an embodiment of an intelligent information transmission system according to the present invention. As shown in Figure 4, it includes:
  • the SDI transmitting end is configured to: when each frame of video data x needs to be transmitted, perform the following processing: determining whether there is intelligent information that satisfies a transmission condition; and the intelligent information that satisfies the transmission condition includes: not transmitting, and corresponding thereto The smart information of one frame of video data has been transmitted; if so, an intelligent information y satisfying the transmission condition is embedded in a predetermined position in the video data x, and the video data x embedded in the smart information y is transmitted.
  • the predetermined location may include any of the following locations: the first two rows of valid data in the video data x, the last two rows of valid data in the video data x, and the frame blanking row in the video data x.
  • the SDI sender can embed the smart information y into a predetermined position in the video data x in the form of a smart header Header+Intelligent Information Load Payload;
  • the Header includes: a TIME_STAMP_V field, a TIME_STAMP_I field, and a V field;
  • the TIME_STAMP_V field carries a timestamp of the video data x
  • the TIME_STAMP_I field carries the timestamp of the video data corresponding to the smart information y
  • the V field carries the indication Payload
  • the content carried in the content is effectively identified; the Payload carries the intelligent information y.
  • the SDI sender encapsulates the smart information y in an intelligent information payload of a smart information element; embedding the smart information element at a predetermined location in the video data x.
  • the Header and the Payload in the smart information element are the same as the Header and the Payload in the smart information y, respectively, and are not described here.
  • the system shown in FIG. 4 may further include:
  • the SDI receiving end is configured to determine, according to the identifier carried in the V field, whether the content carried in the Payload is valid after receiving the video data x; if yes, extract the intelligent information y in the Payload, and for the received
  • Each frame of video data outside the video data x is determined whether the timestamp carried in the TIME_STAMP_V field in the frame video data is the same as the timestamp carried in the TIME_STAMP_I field in the video data x, and if so, the frame video data is Match with smart information y.
  • the SDI receiving end is configured to determine, according to the identifier carried in the V field, whether the content carried in the Payload is valid after receiving the video data x; if yes, extract the location in the Payload
  • the smart information y is read, and from each received video data except the video data x, the timestamp carried in the TIME_STAMP_V field is searched for the same video data as the timestamp carried in the TIME_STAMP_I field in the video data x. If found, the one frame of video data that is found is matched with the smart information y.
  • the SDI sender may be further configured to pass the bit for each byte in the smart information y before transmitting the video data x embedded in the smart information y.
  • the operation splits it into two bytes and the two bytes are transmitted adjacently;
  • the SDI sender is configured to separately transmit the split two bytes for each byte in the smart information y.
  • the SDI receiving end may further be configured to restore each byte in the pre-split smart information y by the inverse operation of the bit operation after extracting the smart information y in the Payload.
  • 0x80) and B1 ((A>>a)
  • the SDI sender may be further configured to: before the video data x embedded in the smart information y is transmitted, copy the smart information y into M shares, M is an even number, and obtain a total of M+1 pieces of intelligent information y, which are carried in the Payload. Transfer in
  • the SDI receiving end may be further configured to: after extracting the smart information y in the Payload, determine whether the extracted M+1 pieces of intelligent information y are the same, if they are all the same, continue the subsequent processing, if neither If they are the same, they are all discarded, and the processing ends. If the same number of copies m is greater than (M+1)/2 but less than M+1, the M+1-m shares that are different from the m shares are discarded, and the subsequent processing is continued. .
  • the SDI receiving end is further configured to: after extracting the smart information y in the Payload, if the same number of copies m in the M+1 copies of the smart information y is equal to (M+1), Continue the subsequent processing; if the same number of copies m is greater than (M+1)/2 but less than M+1, discard M+1-m shares that are different from the m shares, and continue the subsequent processing; if the same If the number of copies m is less than (M+1)/2, all are discarded.
  • FIG. 5 is a schematic structural diagram of an embodiment of an intelligent information transmission apparatus according to the present invention. As shown in Figure 5, it includes:
  • a first processing module configured to determine, when each frame of video data x needs to be transmitted, whether there is intelligent information that satisfies a transmission condition; the intelligent information that satisfies the transmission condition includes: not transmitting, and a corresponding one frame of video The intelligent information that the data has been transmitted; if yes, the second processing module is notified to perform its own function;
  • the second processing module is configured to embed a piece of intelligent information y that satisfies the transmission condition into a predetermined position in the video data x, and transmit the video data x embedded in the smart information y.
  • the predetermined location may include any of the following locations: the first two rows of valid data in the video data x, the last two rows of valid data in the video data x, and the frame blanking row in the video data x.

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  • Computer Hardware Design (AREA)
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Abstract

本发明公开了一种智能信息传输方法、系统和装置：当每需要传输一帧视频数据x时，SDI发送端分别进行以下处理：确定是否存在满足传输条件的智能信息；所述满足传输条件的智能信息包括：未进行传输，且其所对应的一帧视频数据已经传输完毕的智能信息；如果是，则将一条满足传输条件的智能信息y嵌入到视频数据x中的预定位置，并将嵌入智能信息y后的视频数据x进行传输。应用本发明所述方案，能够降低实现成本和提高安全性等。

Description

一种智能信息传输方法、系统和装置 技术领域
本发明涉及智能交通领域，特别涉及一种智能信息传输方法、系统和装置。
发明背景
现有的智能交通一体机通常既具有视频数据(即图像数据)采集、生成功能，又具有利用自身所集成的智能算法生成智能信息的功能，所述智能信息可包括：车牌信息、车辆特征(如车身颜色、车型)以及违章类型等。
其中，视频数据通过数字串行接口(SDI，Serial Digital Interface)传输给终端服务器，智能信息通过IP网络传输给终端服务器。
发明内容
有鉴于此，本发明提供了一种智能信息传输方法、系统和装置，能够降低实现成本和提高安全性。
为了达到上述目的，本发明的技术方案是这样实现的：
一种智能信息传输方法，
当每需要传输一帧视频数据x时，数字串行接口SDI发送端确定是否存在满足传输条件的智能信息；所述满足传输条件的智能信息包括：未进行传输，且其所对应的一帧视频数据已经传输完毕的智能信息；
如果是，则将一条满足传输条件的智能信息y嵌入到视频数据x中的预定位置，并将嵌入智能信息y后的视频数据x进行传输。
一种智能信息传输系统，包括：
数字串行接口SDI发送端，用于当每需要传输一帧视频数据x时，分别进行以下处理：确定是否存在满足传输条件的智能信息；所述满足传输条件的智能信息包括：未进行传输，且其所对应的一帧视频数据已经传输完毕的智能信息；如果是，则将一条满足传输条件的智能信息y嵌入到视频数据x中的预定位置，并将嵌入智能信息y后的视频数据x进行传输。
一种智能信息传输装置，包括：
第一处理模块，用于当每需要传输一帧视频数据x时，确定是否存在满足传输条件的智能信息；所述满足传输条件的智能信息包括：未进行传输，且其所对应的一帧视频数据已经传输完毕的智能信息；如果是，则通知第二处理模块执行自身功能；
所述第二处理模块，用于将一条满足传输条件的智能信息y嵌入到视频数据x中的预定位置，并将嵌入智能信息y后的视频数据x进行传输。
可见，采用本发明所述方案，可将智能信息嵌入到视频数据中来进行传输，即基于SDI来传输智能信息，从而可利用已有的同轴线，无需再进行IP网络的布设，进而降低了实现成本；而且，相对于IP网络来说，SDI比较封闭，从而安全性更高，进而提高了智能信息的安全性。
附图简要说明
图1为本发明智能信息传输方法实施例的流程图；
图2为本发明实施例所述视频数据x中的有效数据的前两行和后两行的示意图；
图3为本发明实施例所述Header的组成结构示意图；
图4为本发明实施例智能信息处理方法流程示意图；
图5为本发明智能信息传输系统实施例的组成结构示意图；
图6为本发明智能信息传输装置实施例的组成结构示意图。
实施本发明的方式
可见，按照现有方式，如果要传输智能信息，必须要布设有IP网络，从而使得成本相对较高，而且将智能交通一体机暴露在IP网络中，安全性较差。
针对现有技术中存在的问题，本发明中提出一种智能信息传输方案，能够降低实现成本和提高安全性等。
为了使本发明的技术方案更加清楚、明白，以下参照附图并举实施例，对本发明所述方案作进一步的详细说明。
实施例一
图1为本发明智能信息传输方法实施例的流程图。如图1所示，包括以下步骤。
步骤11：当每需要传输一帧视频数据x时，SDI发送端确定是否存在满足传输条件的智能信息；所述满足传输条件包括：未进行传输，且其所对应的一帧视频数据已经传输完毕；如果是，则执行步骤12，否则，执行步骤13。
视频数据以帧为单位进行传输，并通过SDI进行传输，所述SDI发送端可为智能交通一体机等。
本发明所述方案中，需要保证一帧视频数据对应的智能信息滞后于该帧视频数据进行传输，即先传输该帧视频数据，之后再传输该帧视频数据对应的智能信息。
因此，本步骤中所述的满足传输条件的智能信息需要是未进行过传输、且其所对应的一帧视频数据已经传输完毕的智能信息。
满足传输条件的智能信息可能是一条，也可能是多条，还可能是零条，如果存在至少一条或多条满足条件的智能信息，则执行步骤12。否则，执行步骤13。
步骤12：SDI发送端将一条满足传输条件的智能信息y嵌入到视频数据x中的预定位置，并将嵌入智能信息y后的视频数据x进行传输。
如果满足传输条件的智能信息只有一条，那么则可将该条智能信息嵌入到视频数据x中的预定位置，如果满足传输条件的智能信息有多条，则可从中选取出一条，并嵌入到视频数据x中的预定位置。如何进行选取不作限制，比如，可选取出对应的视频数据最早被传输的一条智能信息。
为便于表述，本实施例以及后续各实施例中，用视频数据x来表示需要传输的任意一帧视频数据，用智能信息y来表示嵌入到视频数据x中的一条智能信息。
SDI协议标准规定了其支持的最大频率为3.0G，最大分辨率为1920×1080，并支持无损的音视频传输。
在一个实施方式中，将智能信息y嵌入到视频数据x中的位置可包括如下位置中的任一位置：视频数据x中的有效数据的前两行、视频数据x中的有效数据的后两行、视频数据x中的帧消隐行。图2为本发明所述视频数据x中的有效数据的前两行和后两行的示意图。
相应地，可将智能信息y以智能信息头(Header)+智能信息负载(Payload)的形式嵌入到视频数据x中的上述位置。
其中，Header中可包括：TIME_STAMP_V字段、TIME_STAMP_I字段和V字段；TIME_STAMP_V字段中携带有视频数据x的时间戳，TIME_STAMP_I字段中携带有智能信息y对应的视频数据的时间戳，V字段中携带有指示Payload中携带的内容有效的标识；Payload中携带有 智能信息y。
另外，在实际应用中，Header中还可进一步包括：PAYLOAD_LENGTH字段、REV字段以及VMAIN、VSUB和VMOD字段。
其中，PAYLOAD_LENGTH字段中携带有智能信息y的长度信息，以32字节为单位，即如果智能信息y的长度为32字节，则该字段中记录为1，如果智能信息y的长度为64字节，则该字段中记录为2；REV字段为保留字段，用于灵活扩展；VMAIN、VSUB和VMOD字段用于区分不用版本的智能信息。
在一个实施方式中，可以将所述智能信息封装在智能信息元素的智能信息负载(Payload)中，将所述智能信息元素嵌入到视频数据x中的预定位置。
其中，所述智能信息元素包括智能信息头(Header)、Payload。其中，Header、Payload所包括的内容分别与上述智能信息y中Header、Payload所包括的内容相同，此处不再赘述。
图3为本发明所述Header的组成结构示意图。如图3所示，Header的大小可为128个字节，各字段的大小可参照图中所示，Payload最大通常为512个字节。
如图2中所示的每一行理论上可支持嵌入1920×2个字节的智能信息。通常来说，如果要嵌入智能信息y，只需要占用一行就可以了，如图2中所示的第0行，特殊地，如果智能信息y较大，一行不够用，则可同时占用两行，如图2中所示的第0行和第1行。
步骤13：SDI发送端按照预定方式进行处理。
在一个实施方式中，如果步骤12中的确定结果为不存在满足传输条件的智能信息，那么可采用以下预定方式进行处理：在图3中所示的 TIME_STAMP_V字段中携带视频数据x的时间戳，在V字段中携带指示Payload中携带的内容无效的标识，Payload中可为空或携带该位置原本应该传输的数据如视频数据，其它各字段中携带的信息不限。
在一个实施方式中，V字段中携带的指示Payload中携带的内容无效的标识可为0，指示Payload中携带的内容有效的标识可为1。
实施例二
以上介绍的是SDI发送端的处理方式，以下对SDI接收端的处理方式进行说明。在一个实施方式中，SDI接收端可为终端服务器等。
SDI接收端接收到视频数据x之后，可进行以下处理：
步骤41、根据视频数据x中的V字段中携带的标识，确定Payload中携带的内容是否有效，如果是，则执行步骤B，否则，可按照预定方式进行处理，具体为何种方式不作限制。
步骤42、提取出Payload中的智能信息y，并针对已接收到的除视频数据x外的每帧视频数据，确定该帧视频数据中的TIME_STAMP_V字段中携带的时间戳与视频数据x中的TIME_STAMP_I字段中携带的时间戳是否相同。如果是，则将该帧视频数据与智能信息y进行匹配。
所述匹配即指实现智能信息y与其对应的视频数据在SDI接收端的同步。
在一个实施方式中，可以提取出所述Payload中携带的所述智能信息y，从已接收到的除所述视频数据x外的每帧视频数据中，查找TIME_STAMP_V字段中携带的时间戳与所述视频数据x中的TIME_STAMP_I字段中携带的时间戳相同的视频数据，如果查找到，则将该查找到的一帧视频数据与智能信息y进行匹配。
在实际应用中，为加快处理速度，可预先建立一个缓存池。这样，SDI接收端在接收到视频数据x后，可先将其加入到缓存池中，然后再 根据视频数据x中的V字段中携带的标识确定Payload中携带的内容是否有效，比如标识为1则表示有效。如果是，则针对缓存池中所保存的除视频数据x外的每帧视频数据，分别确定该帧视频数据中的TIME_STAMP_V字段中携带的时间戳与视频数据x中的TIME_STAMP_I字段中携带的时间戳是否相同。如果是，则将该帧视频数据与智能信息y进行匹配，并将该帧视频数据从缓存池中删除。
当缓存池中已满时，可优先删除TIME_STAMP_V字段中携带的时间戳最小的视频数据，即最早接收到的视频数据。
缓存池的空间大小可根据实际需要而定。通常不会太小，以防止出现当对智能信息y进行匹配时，与其相匹配的视频数据已经被删除的情况。
需要说明的是，为了保证智能信息的正确接收，本发明所述方案中，SDI发送端和SDI接收端需要预先设定智能信息y的嵌入位置，即保证SDI发送端与SDI接收端都获知相同的智能信息y的嵌入位置。
实施例三
以上分别对SDI发送端和SDI接收端的处理方式进行了介绍，在此基础上，本发明所述方法还可以包括如下操作。
1)前处理和后处理
由于SDI发送端在内同步模式下不能传输0x00和0xff这样的特殊数据，因此为了避免出现智能信息y中包括0x00和0xff的情况，可在将嵌入智能信息y后的视频数据x进行传输之前，先进行以下处理：针对智能信息y中的每个字节，分别通过比特位操作将其拆分为两个字节，且两个字节相邻传输。
具体地，可采用一个比特位操作位数a(1＜a＜7)，将每个字节的8bit拆分成a bit和(8-a)bit，然后或上0x80生成二个字节，不同取值的a 可生成不同的二个字节。
即：分别计算B0＝((A|(～(0xff＜＜a)))|0x80)和B1＝((A＞＞a)|0x80)。其中，A表示拆分前的任一字节，B0和B1表示将A进行拆分后得到的两个字节，|表示按位或运算，～表示取反，＜＜表示向左移位，＞＞表示向右移位。
以A＝0xff为例，当a取不同的值时，得到的B0和B1分别如表一所示：
a B0 B1
2 0x83 0xbf
3 0x8e 0x9f
4 0x8f 0x8f
5 0x9f 0x8e
6 0xbf 0x83
表一不同取值的a分别对应的B0和B1
相应地，SDI接收端在提取出Payload中的智能信息y之后，可进一步进行以下处理：通过比特位操作的逆操作，还原出拆分前智能信息y中的每个字节。
即可按照以下方式还原出A：A＝(B1＜＜a)|(B0&(～(0xff＜＜a)))，&表示按位与运算。
2)纠错处理
由于SDI传输是单向的，一旦传输中出现错误，SDI接收端是不能再请求传输的，因此为了达到一定的纠错处理，从而提高数据传输的成功率，SDI发送端在将嵌入智能信息y后的视频数据x进行传输之前，可先进行以下处理：将智能信息y复制M份，M为偶数，从而共得到M+1份智能信息y，均携带在Payload中进行传输。
在一个实施方式中，SDI接收端在提取出Payload中的智能信息y之后，可进一步进行以下处理：确定提取出的M+1份智能信息y是否都相同；如果都相同，则继续后续处理；如果各不相同，则全部丢弃，并 结束处理；如果相同的份数m大于(M+1)/2但小于M+1，则丢弃与这m份不相同的M+1-m份，并继续后续处理。
在另一个实施方式中，SDI接收端在提取出Payload中的智能信息y之后，可进一步进行以下处理：如果所述M+1份智能信息y中相同的份数m等于(M+1)，则继续后续处理；如果相同的份数m大于(M+1)/2但小于M+1，则丢弃与这m份不相同的M+1-m份；如果所述相同的份数m小于(M+1)/2，则全部丢弃。
M的具体取值可根据实际需要而定。在一个实施方式中，M取值可为2.这样，如果3份智能信息y中有2份相同，另1份不相同，则可丢弃这1份不相同的。
SDI发送端的纠错处理可在前处理之前进行，也可在前处理之后进行。类似地，SDI接收端的纠错处理可在后处理之前进行，也可在后处理之后进行。
基于上述介绍，图4为本发明智能信息传输系统实施例的组成结构示意图。如图4所示，包括：
SDI发送端，用于当每需要传输一帧视频数据x时，分别进行以下处理：确定是否存在满足传输条件的智能信息；所述满足传输条件的智能信息包括：未进行传输，且其所对应的一帧视频数据已经传输完毕的智能信息；如果是，则将一条满足传输条件的智能信息y嵌入到视频数据x中的预定位置，并将嵌入智能信息y后的视频数据x进行传输。
其中，所述预定位置可包括如下位置中的任一位置：视频数据x中的有效数据的前两行、视频数据x中的有效数据的后两行、视频数据x中的帧消隐行。
另外，SDI发送端可将智能信息y以智能信息头Header+智能信息负载Payload的形式嵌入到视频数据x中的预定位置；
其中，Header中包括：TIME_STAMP_V字段、TIME_STAMP_I字段和V字段；TIME_STAMP_V字段中携带有视频数据x的时间戳，TIME_STAMP_I字段中携带有智能信息y对应的视频数据的时间戳，V字段中携带有指示Payload中携带的内容有效的标识；Payload中携带有智能信息y。
在一个实施方式中，所述SDI发送端将所述智能信息y封装在智能信息元素的智能信息负载(Payload)中；将所述智能信息元素嵌入到视频数据x中的预定位置。其中该智能信息元素中的Header和Payload分别与智能信息y中的Header和Payload相同，此处不再赘述。
图4所示系统中还可进一步包括：
SDI接收端，用于当接收到视频数据x后，根据V字段中携带的标识确定Payload中携带的内容是否有效；如果是，则提取出Payload中的智能信息y，并针对已接收到的除视频数据x外的每帧视频数据，分别确定该帧视频数据中的TIME_STAMP_V字段中携带的时间戳与视频数据x中的TIME_STAMP_I字段中携带的时间戳是否相同，如果是，则将该帧视频数据与智能信息y进行匹配。
在一个实施方式中，SDI接收端，用于当接收到视频数据x后，根据所述V字段中携带的标识确定Payload中携带的内容是否有效；如果是，则提取出所述Payload中的所述智能信息y，并从已接收到的除视频数据x外的每帧视频数据中，查找TIME_STAMP_V字段中携带的时间戳与所述视频数据x中的TIME_STAMP_I字段中携带的时间戳相同的视频数据，如果查找到，则将该查找到的一帧视频数据与智能信息y进行匹配。
另外，SDI发送端还可进一步用于，在将嵌入智能信息y后的视频数据x进行传输之前，针对智能信息y中的每个字节，分别通过比特位 操作将其拆分为两个字节，且两个字节相邻传输；
所述SDI发送端用于针对所述智能信息y中的每个字节，分别将所述拆分后的两个字节相邻传输。
相应地，SDI接收端还可进一步用于，在提取出Payload中的智能信息y之后，通过比特位操作的逆操作，还原出拆分前智能信息y中的每个字节。
较佳地，所述比特位操作包括：B0＝((A|(～(0xff＜＜a)))|0x80)和B1＝((A＞＞a)|0x80)；其中，A表示拆分前的任一字节，B0和B1表示将A进行拆分后得到的两个字节，|表示按位或运算，～表示取反，＜＜表示向左移位，＞＞表示向右移位；
所述比特位操作的逆操作包括：A＝(B1＜＜a)|(B0&(～(0xff＜＜a)))，&表示按位与运算。
SDI发送端还可进一步用于，在将嵌入智能信息y后的视频数据x进行传输之前，将智能信息y复制M份，M为偶数，共得到M+1份智能信息y，均携带在Payload中进行传输；
相应地，SDI接收端还可进一步用于，在提取出Payload中的智能信息y之后，确定提取出的M+1份智能信息y是否均相同，如果均相同，则继续后续处理，如果均不相同，则全部丢弃，并结束处理，如果相同的份数m大于(M+1)/2但小于M+1，则丢弃与这m份不相同的M+1-m份，并继续后续处理。
在一个实施方式中，所述SDI接收端进一步用于，在提取出Payload中的智能信息y之后，如果所述M+1份智能信息y中相同的份数m等于(M+1)，则继续后续处理；如果相同的份数m大于(M+1)/2但小于M+1，则丢弃与这m份不相同的M+1-m份，并继续后续处理；如果所述相同的份数m小于(M+1)/2，则全部丢弃。
图5为本发明智能信息传输装置实施例的组成结构示意图。如图5所示，包括：
第一处理模块，用于当每需要传输一帧视频数据x时，确定是否存在满足传输条件的智能信息；所述满足传输条件的智能信息包括：未进行传输，且其所对应的一帧视频数据已经传输完毕的智能信息；如果是，则通知第二处理模块执行自身功能；
第二处理模块，用于将一条满足传输条件的智能信息y嵌入到视频数据x中的预定位置，并将嵌入智能信息y后的视频数据x进行传输。
其中，所述预定位置可包括如下位置中的任一位置：视频数据x中的有效数据的前两行、视频数据x中的有效数据的后两行、视频数据x中的帧消隐行。
通过以上的实例的描述，本领域的技术人员可以清楚地了解到可借助软件加必需的通用硬件平台的方式来实现上述实例，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个非短暂的存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行上述各个实例所述的方法。
综上所述，以上仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (18)

  1. 一种智能信息传输方法，其特征在于，
    当需要传输一帧视频数据x时，数字串行接口SDI发送端确定是否存在满足传输条件的智能信息；所述满足传输条件的智能信息包括未进行传输，且其所对应的一帧视频数据已经传输完毕的智能信息；
    如果是，则将一条满足传输条件的智能信息y嵌入到所述视频数据x中的预定位置，并将所述嵌入的智能信息y后的视频数据x进行传输。
  2. 根据权利要求1所述的方法，其特征在于，
    所述预定位置包括如下位置中的任一位置：所述视频数据x中的有效数据的前两行、所述视频数据x中的有效数据的后两行、所述视频数据x中的帧消隐行。
  3. 根据权利要求1所述的方法，其特征在于，所述将所述智能信息y嵌入到所述视频数据x中的预定位置包括：
    将所述智能信息y封装在智能信息元素的智能信息负载(Payload)中；
    将所述智能信息元素嵌入到视频数据x中的预定位置；
    其中，所述智能信息元素包括智能信息头(Header)、Payload，其中，所述Header包括：TIME_STAMP_V字段、TIME_STAMP_I字段和V字段；所述TIME_STAMP_V字段中携带有所述视频数据x的时间戳，所述TIME_STAMP_I字段中携带有所述智能信息y对应的视频数据的时间戳，所述V字段中携带有指示所述Payload中携带的内容有效的标识；所述Payload中携带有所述智能信息y。
  4. 根据权利要求3所述的方法，其特征在于，
    该方法进一步包括：当不存在所述满足传输条件的智能信息时，所 述TIME_STAMP_V字段中携带有所述视频数据x的时间戳，V字段中携带有指示所述Payload中携带的内容无效的标识。
  5. 根据权利要求4所述的方法，其特征在于，所述将所述嵌入智能信息y后的所述视频数据x进行传输之后，进一步包括：
    SDI接收端接收到所述视频数据x后，根据所述V字段中携带的标识，确定所述Payload中携带的内容是否有效；
    如果是，则提取出所述Payload中携带的所述智能信息y，从已接收到的除所述视频数据x外的每帧视频数据中，查找TIME_STAMP_V字段中携带的时间戳与所述视频数据x中的TIME_STAMP_I字段中携带的时间戳相同的视频数据，如果查找到，则将该查找到的一帧视频数据与智能信息y进行匹配。
  6. 根据权利要求5所述的方法，其特征在于，
    所述根据V字段中携带的标识确定Payload中携带的内容是否有效之前，进一步包括：将视频数据x加入到预先建立的缓存池中；
    所述已接收到的除所述视频数据x外的每帧视频数据包括：所述缓存池中所保存的除所述视频数据x外的每帧视频数据；
    所述将该帧视频数据与智能信息y进行匹配之后，进一步包括：将所述查找到的该帧视频数据从缓存池中删除。
  7. 根据权利要求5或6所述的方法，其特征在于，
    所述将嵌入智能信息y后的视频数据x进行传输之前，进一步包括：针对所述智能信息y中的每个字节，分别通过比特位操作将其拆分为两个字节；
    所述将所述嵌入的智能信息y后的视频数据x进行传输包括：
    针对所述智能信息y中的每个字节，分别将所述拆分后的两个字节相邻传输；
    所述提取出所述Payload中的所述智能信息y之后，进一步包括：通过比特位操作的逆操作，还原出拆分前智能信息y中的每个字节。
  8. 根据权利要求7所述的方法，其特征在于，
    所述比特位操作包括：分别计算B0＝((A|(～(0xff＜＜a)))|0x80)和B1＝((A＞＞a)|0x80)；其中，A表示拆分前的任一字节，B0和B1表示将A进行拆分后得到的两个字节，|表示按位或运算，～表示取反，＜＜表示向左移位，＞＞表示向右移位；
    所述比特位操作的逆操作包括：计算A＝(B1＜＜a)|(B0&(～(0xff＜＜a)))，&表示按位与运算。
  9. 根据权利要求5或6所述的方法，其特征在于，
    所述将嵌入所述智能信息y后的所述视频数据x进行传输之前，进一步包括：将所述智能信息y复制M份，M为偶数，将得到M+1份智能信息y，携带在所述Payload中进行传输；
    所述提取出Payload中的智能信息y之后，进一步包括：如果所述M+1份智能信息y中相同的份数m等于(M+1)，则继续后续处理；如果相同的份数m大于(M+1)/2但小于M+1，则丢弃与这m份不相同的M+1-m份；如果所述相同的份数m小于(M+1)/2，则全部丢弃。
  10. 一种智能信息传输系统，其特征在于，包括：
    数字串行接口SDI发送端，用于当每需要传输一帧视频数据x时，分别进行以下处理：确定是否存在满足传输条件的智能信息；所述满足传输条件的智能信息包括：未进行传输，且其所对应的一帧视频数据已经传输完毕的智能信息；如果是，则将一条满足传输条件的智能信息y嵌入到所述视频数据x中的预定位置，并将嵌入所述智能信息y后的所述视频数据x进行传输。
  11. 根据权利要求10所述的系统，其特征在于，
    所述预定位置包括如下位置中的任一位置：所述视频数据x中的有效数据的前两行、所述视频数据x中的有效数据的后两行、所述视频数据x中的帧消隐行。
  12. 根据权利要求10所述的系统，其特征在于，所述SDI发送端将所述智能信息y封装在智能信息元素的智能信息负载(Payload)中；将所述智能信息元素嵌入到视频数据x中的预定位置；
    其中，所述智能信息元素包括智能信息头(Header)、Payload，其中，所述Header中包括：TIME_STAMP_V字段、TIME_STAMP_I字段和V字段；所述TIME_STAMP_V字段中携带有视频数据x的时间戳，所述TIME_STAMP_I字段中携带有智能信息y对应的视频数据的时间戳，所述V字段中携带有指示所述Payload中携带的内容有效的标识；Payload中携带有智能信息y。
  13. 根据权利要求12所述的系统，其特征在于，
    所述系统中进一步包括：
    SDI接收端，用于当接收到视频数据x后，根据所述V字段中携带的标识确定Payload中携带的内容是否有效；如果是，则提取出所述Payload中的所述智能信息y，并从已接收到的除视频数据x外的每帧视频数据中，查找TIME_STAMP_V字段中携带的时间戳与所述视频数据x中的TIME_STAMP_I字段中携带的时间戳相同的视频数据，如果查找到，则将该查找到的一帧视频数据与智能信息y进行匹配。
  14. 根据权利要求13所述的系统，其特征在于，
    所述SDI发送端进一步用于，在将嵌入所述智能信息y后的视频数据x进行传输之前，针对所述智能信息y中的每个字节，分别通过比特位操作将其拆分为两个字节；
    所述SDI发送端用于针对所述智能信息y中的每个字节，分别将所 述拆分后的两个字节相邻传输；
    所述SDI接收端进一步用于，在提取出Payload中的智能信息y之后，通过比特位操作的逆操作，还原出拆分前智能信息y中的每个字节。
  15. 根据权利要求14所述的系统，其特征在于，
    所述比特位操作包括：B0＝((A|(～(0xff＜＜a)))|0x80)和B1＝((A＞＞a)|0x80)；其中，A表示拆分前的任一字节，B0和B1表示将A进行拆分后得到的两个字节，|表示按位或运算，～表示取反，＜＜表示向左移位，＞＞表示向右移位；
    所述比特位操作的逆操作包括：A＝(B1＜＜a)|(B0&(～(0xff＜＜a)))，&表示按位与运算。
  16. 根据权利要求13所述的系统，其特征在于，
    所述SDI发送端进一步用于，在将嵌入智能信息y后的视频数据x进行传输之前，将智能信息y复制M份，M为偶数，共得到M+1份智能信息y，均携带在Payload中进行传输；
    所述SDI接收端进一步用于，在提取出Payload中的智能信息y之后，如果所述M+1份智能信息y中相同的份数m等于(M+1)，则继续后续处理；如果相同的份数m大于(M+1)/2但小于M+1，则丢弃与这m份不相同的M+1-m份，并继续后续处理；如果所述相同的份数m小于(M+1)/2，则全部丢弃。
  17. 一种智能信息传输装置，其特征在于，包括：
    第一处理模块，用于当需要传输一帧视频数据x时，确定是否存在满足传输条件的智能信息；所述满足传输条件的智能信息包括：未进行传输，且其所对应的一帧视频数据已经传输完毕的智能信息；如果是，则通知第二处理模块执行自身功能；
    所述第二处理模块，用于将一条满足传输条件的所述智能信息y嵌 入到所述视频数据x中的预定位置，并将嵌入所述智能信息y后的所述视频数据x进行传输。
  18. 根据权利要求17所述的装置，其特征在于，
    所述预定位置包括如下位置中的任一位置：所述视频数据x中的有效数据的前两行、所述视频数据x中的有效数据的后两行、所述视频数据x中的帧消隐行。
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