WO2011124075A1 - 一种视频处理方法及终端 - Google Patents

一种视频处理方法及终端 Download PDF

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Publication number
WO2011124075A1
WO2011124075A1 PCT/CN2010/079626 CN2010079626W WO2011124075A1 WO 2011124075 A1 WO2011124075 A1 WO 2011124075A1 CN 2010079626 W CN2010079626 W CN 2010079626W WO 2011124075 A1 WO2011124075 A1 WO 2011124075A1
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Prior art keywords
data
area
real
time
odd
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PCT/CN2010/079626
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English (en)
French (fr)
Inventor
贾蓉
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/521,063 priority Critical patent/US8693840B2/en
Priority to EP20100849311 priority patent/EP2515532B1/en
Publication of WO2011124075A1 publication Critical patent/WO2011124075A1/zh

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Classifications

    • 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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4147—PVR [Personal Video Recorder]
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8146—Monomedia components thereof involving graphical data, e.g. 3D object, 2D graphics
    • H04N21/8153—Monomedia components thereof involving graphical data, e.g. 3D object, 2D graphics comprising still images, e.g. texture, background image
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/4448—Receiver circuitry for the reception of television signals according to analogue transmission standards for frame-grabbing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a video processing method and terminal. Background technique
  • the main object of the present invention is to provide a video processing method and a terminal, so as to solve the problem that a user cannot accurately obtain a picture to be intercepted during a real-time video picture playing process.
  • the present invention provides a video processing method.
  • a real-time video image receiving terminal plays a real-time video image and receives a pre-screening instruction
  • the pre-screening process is started, and the control terminal pauses to play the real-time picture, and plays the real-time picture.
  • the screen for a while before, for the user to process the reproduced picture.
  • the process is a screenshot of the video screen.
  • the real-time video image receiving terminal stores the real-time video data into the buffer area of the memory of the terminal while playing the real-time video picture.
  • the memory is set to odd and even two buffer areas, and the data is stored in the odd area and the even area according to the frame header.
  • the first frame data of the video data is stored to the lowest bit address of the odd area, and the second frame data is stored to the lowest bit address of the even area; when the third frame data is received, the first frame data is stored in the adjacent high position Address, the third frame of data is stored in the lowest bit address of the odd area, and so on; the even area does the same operation, that is, when the fourth frame of data is received, the second frame of data is stored in its adjacent upper address, fourth The frame data is stored in the lowest address of the odd-numbered area, and so on; all real-time data is stored in the lowest-order address of the odd-numbered area or the even-numbered area, and the data of the remaining frames are sequentially stored in the incremental address according to the frame header.
  • the digital processor of the terminal stops transmitting real-time image data to the display, reads data from the buffer area, and the data of the two buffer areas are alternately updated, the first clock cycle, and the real-time data is stored.
  • the odd-numbered buffer area reads data from the highest-order address of the odd-numbered area; in the next clock cycle, the even-numbered area stores real-time data, the odd-numbered area is not updated, and data is still read from the highest-order address of the odd-numbered area; the third clock cycle The odd-numbered area stores real-time data, the even-numbered area is not updated, and the data is read from the highest-order address of the even-numbered area; in the fourth clock cycle, the real-time data is stored in the even-numbered buffer area, and the data is read from the highest-order address of the even-numbered area; By analogy, one frame of data is sent to the multimedia processor for two consecutive clock cycles.
  • the terminal After the user takes a screenshot of the screen, the terminal stores the image data in a designated area of the memory; after the captured image data is saved, the digital processor stops reading the image data from the buffer area, and sends the received real-time image data to the display screen. , resume normal playback.
  • the invention further provides a terminal, comprising a digital processor, a display and a memory, the digital processor having a screenshot control unit; the digital processor receiving real-time video data on the one hand, completing the codec processing, and sending the display to the display for display; On the other hand, the real-time data is stored in the memory of the terminal; the memory is provided with a buffer area; after receiving the pre-screening instruction, the screenshot control unit stops transmitting real-time image data to the display, and reads the time from the buffer area. The video data of the previous time period is for the user to take a screenshot.
  • the buffer area is set with two buffers of parity, and the data of the two buffer areas are alternately updated,
  • One clock cycle when the real-time data is stored in the odd buffer area, the data is read from the highest bit address of the odd area; the next clock cycle, the even area is stored in the real-time data, the odd area is not updated, and the highest bit address of the odd area is still read. Data out; the third clock cycle, the odd area is stored in the real-time data, the even area is not updated, the data is read from the highest bit address of the even area; the fourth clock cycle, the real-time data is stored in the even buffer area, from the even number The highest bit address of the area reads data; and so on, one frame of data is sent to the multimedia processor for two consecutive clock cycles.
  • the screenshot control unit of the digital processor After the user takes a screenshot of the screen, the screenshot control unit of the digital processor stores the image data in a designated area of the memory to complete the screenshot operation; after the intercepted image data is saved, the screenshot control unit of the digital processor responds to the interrupt command, and stops The buffer area reads image data, and the received real-time image data is sent to the display screen to resume normal playback.
  • the technical solution of the present invention pre-stores the video picture being played by the terminal when the user takes a screenshot, and presents the video picture of the time period before the time point to the user. Allow users to take screenshots with ease, so that they don't miss the map they want to cut due to slow response.
  • FIG. 1 is a schematic flow chart of a video processing method according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a terminal according to an embodiment of the present invention. detailed description
  • the invention provides a method and a terminal for video processing, which solves the problem that a user cannot accurately obtain a picture to be intercepted during a real-time video picture playing process.
  • the present invention provides a method and a terminal for capturing a real-time video picture.
  • the main idea is:
  • the real-time video image receiving terminal sets a pre-screening shortcut when playing a real-time image picture, if the user feels the picture Interest, you can click the pre-screening shortcut, the terminal pauses to play the real-time picture, and the screen before playing the real-time picture, the user can Take a screenshot of the replayed screen.
  • FIG. 2 it is a schematic diagram of a terminal of an embodiment of the present invention, which includes a digital processor, a display, and a memory.
  • the digital processor has a screenshot control unit.
  • the terminal receives the real-time video image signal
  • the digital processor inside the terminal receives the real-time video data on the one hand, completes the codec processing, and sends it to the display for display; on the other hand, the real-time data is stored in the memory of the terminal, and the memory sets two buffers.
  • the area, the odd area and the even area the data is stored in the odd area and the even area according to the frame header.
  • the first frame of data is stored to the lowest bit address of the odd zone, and the second frame of data is stored to the least significant address of the even zone.
  • the third frame data is received, the first frame data is stored in its adjacent upper address, the third frame data is stored in the lowest bit address of the odd area, and so on.
  • the even-numbered area does the same operation, that is, when the fourth frame of data is received, the second frame of data is stored in its adjacent upper address, the fourth frame of data is stored in the lowest-order address of the odd-numbered area, and so on. All real-time data is stored in the lowest-order address of the odd-numbered area or the even-numbered area, and the data of the remaining frames are sequentially stored in the incremental address according to the frame header.
  • the digital processor After clicking the pre-screening shortcut, the digital processor will pause to send real-time image data to the display, and alternately read the stored image data from the highest-order address of the odd-numbered buffer area and the even-numbered buffer area, and then send it to the display.
  • the user takes a screenshot according to the playback screen displayed by the terminal, and obtains a screenshot screen.
  • the digital processor After the user intercepts the picture, it is stored in the memory of the terminal, and the digital processor will continue to send the real-time image data to the display to resume normal playback.
  • FIG. 1 it is a specific implementation manner of the video processing method of the present invention.
  • the implementation of the method mainly lies in the design of the software method, which can be implemented on the existing terminal system without adding hardware cost.
  • the method can accurately intercept the video picture that the user needs.
  • the terminal receives and plays the real-time image screen.
  • the user can click the pre-screening shortcut to send a pre-screening instruction, and the terminal pauses to play the real-time image screen, and the playback is performed.
  • a picture from a while ago Presetting the odd and even buffer areas in the terminal can reduce the reading rate of the image data, that is, the frame rate by half, so that the picture can be played slowly, which is convenient for the user to successfully capture the desired picture.
  • Step 101 The terminal starts real-time video playback.
  • Step 102 The terminal determines whether to take a screenshot.
  • the terminal determines whether the user's pre-screening instruction is received. If the user selects the pre-screenshot, step 103 is performed; otherwise, step 104 is performed.
  • Step 103 The digital processor responds to the pre-screening instruction, stops transmitting real-time image data, and reads and sends the data in the memory to the display.
  • the terminal receives the real-time image data, is controlled by the digital processor, divides the data stream into two flow directions, one group is sent to the display for normal playback; the other group is sent to the terminal's memory, and a part of the memory is used as a buffer area. It is divided into an odd buffer area and an even buffer area with the same capacity. This operation is started when the terminal starts the playback software.
  • the received first frame data is stored in the lowest bit address of the odd buffer area; the second frame data is stored in the lowest bit address of the even buffer area; when the third frame data is received, the first frame data is stored adjacent to The upper address, the third frame of data is stored in the lower address of the buffer.
  • the even-numbered area does the same operation until both buffers are full, and the lowest-order address always holds the real-time frame data.
  • the terminal plays normally on the one hand, and the cached data is updated in the buffer area on the other hand.
  • the screenshot control unit of the digital processor stops transmitting the real-time image data to the display and reads the data from the buffer area after receiving the instruction. Two buffers of parity are set, and the data of the two buffers are updated alternately.
  • the real-time data is stored in the odd buffer area, and the data is read from the highest bit address of the odd area.
  • the even-numbered area is stored in real-time data, while the odd-numbered area is not updated, still from the odd-numbered area. The highest bit address reads the data.
  • the odd-numbered area stores real-time data, while the even-numbered area is not updated, and data is read from the highest-order address of the even-numbered area.
  • the real-time data is stored in the even-numbered buffer area, and the data is read from the highest-order address in the even-numbered area. And so on. In this way, one frame of data can be sent to the multimedia processor for two consecutive clock cycles, which is equivalent to reducing the frame rate and making the picture slower.
  • Step 104 The live video screen is played normally.
  • Step 105 The user takes a screenshot according to the screen displayed on the display.
  • the display shows the playback screen, and the user performs the screenshot operation; at this time, the display shows the image data of the buffer area, and the image frame frequency is halved, and the user can take a screenshot of the slow playback screen.
  • Step 106 Determine whether the user completes the screenshot operation. If the screenshot operation is completed and saved, step 107 is performed immediately; if no operation is performed, step 107 is performed after a time threshold; the time threshold can be set by the user. It can be set to 5 seconds or 10 seconds in this embodiment.
  • the image data can be stored in a designated area of the memory to complete the screenshot operation. If the image is not manipulated after the screenshot has passed the threshold time, it will be considered as completing the screenshot operation.
  • Step 107 The digital processor receives the interrupted signal of the screenshot, stops reading the data in the memory buffer, and performs step 104.
  • the screenshot control unit of the digital processor stops reading the image data from the buffer area in response to the interrupt command, and sends the received real-time image data to the display to resume normal playback.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Graphics (AREA)
  • Television Signal Processing For Recording (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

本发明公开了一种视频处理方法及终端，方法包括：实时视频图像接收终端在播放实时图像画面时，设置一个预截图快捷方式，若用户对画面感兴趣，可以点击预截图快捷方式；终端收到预截图指令时，暂停播放实时画面，而播放实时画面之前一段时间的画面，用户可以对重放的画面进行截图。通过本发明，在用户截图时，对终端正在播放的视频画面进行预存储处理，将该时间点之前的一段时间的视频画面慢放呈现给用户，使用户可以从容截图，以至于不会由于反应迟缓，错过自己想要截的图。

Description

一种视频处理方法及终端 技术领域
本发明涉及无线通信技术领域， 更具体地， 涉及一种视频处理方法及 终端。 背景技术
近年来， 随着通讯技术的迅速发展， 用户可通过电脑、 手机等终端接 收观看各种实时视频节目。 在实时图像数据播放时， 用户若对画面感兴趣 而需要截图， 但由于人的感官上的延迟性， 当用户去截取画面时， 很可能 刚才想要获取的画面已经一闪而过， 无法成功截取。 因此， 有必要提出一 种新的视频处理方法来解决上述问题。 发明内容
有鉴于此， 本发明的主要目的在于提供一种视频处理方法及终端， 以 解决用户在实时视频画面播放过程中， 无法准确获得想要截取画面的问题。
为实现上述目的， 本发明提出一种视频处理方法， 实时视频图像接收 终端在播放实时视频画面， 并收到预截图指令时， 启动预截图处理， 控制 终端暂停播放实时画面， 播放所述实时画面之前一段时间的画面， 供用户 对重放的画面进行处理。
所述处理是对视频画面的截图。
实时视频图像接收终端在播放实时视频画面的同时， 将实时视频数据 存入终端的存储器的緩存区。
所述存储器设为奇、 偶两个緩存区， 数据则根据帧头分别存入奇数区 和偶数区。 所述视频数据的第一帧数据存储到奇数区的最低位地址， 第二帧数据 存储到偶数区的最低位地址； 当接收到第三帧数据时， 第一帧数据存入其 相邻高位地址， 第三帧数据存入奇数区的最低位地址， 依此类推； 偶数区 做同样的操作， 即当接收到第四帧数据时， 第二帧数据存入其相邻高位地 址， 第四帧数据存入奇数区的最低位地址， 依此类推； 所有的实时数据都 是存入奇数区或偶数区的最低位地址， 其余帧的数据根据帧头， 依次存入 递增地址。
当用户启动预截图处理时， 终端的数字处理器停止向显示器发送实时 图像数据， 从緩存区中读出数据， 所述两个緩存区的数据交替更新， 第一 个时钟周期， 实时数据存入奇数緩存区的同时， 从奇数区最高位地址读出 数据； 下一个时钟周期， 偶数区存入实时数据， 奇数区不作更新， 仍从奇 数区的最高位地址读出数据； 第三个时钟周期， 奇数区存入实时数据， 偶 数区不作更新， 从偶数区的最高位地址读出数据； 第四个时钟周期， 实时 数据存入偶数緩存区的同时， 从偶数区最高位地址读出数据； 依次类推， 将一帧数据连续两个时钟周期送入多媒体处理器。
在用户对画面进行截图后， 所述终端将图像数据存入存储器的指定区 域； 截取图像数据保存后， 数字处理器停止从緩存区读取图像数据， 将接 收的实时图像数据送入显示屏显示， 恢复正常播放。
本发明还提出一种终端， 包括数字处理器、 显示器和存储器， 所述数 字处理器具有截图控制单元； 所述数字处理器一方面接收实时视频数据， 完成编解码处理， 再送到显示器进行显示； 另一方面， 将实时数据存入终 端的存储器中； 所述存储器设置有緩存区； 所述截图控制单元接收到预截 图指令后， 停止向显示器发送实时图像数据， 从緩存区中读出该时间之前 一个时间段的视频数据供用户截图。
所述緩存区设置了奇偶两个緩存区， 两个緩存区的数据交替更新， 第 一个时钟周期， 实时数据存入奇数緩存区的同时， 从奇数区最高位地址读 出数据； 下一个时钟周期， 偶数区存入实时数据， 奇数区不作更新， 仍从 奇数区的最高位地址读出数据； 第三个时钟周期， 奇数区存入实时数据， 偶数区不作更新， 从偶数区的最高位地址读出数据； 第四个时钟周期， 实 时数据存入偶数緩存区的同时， 从偶数区最高位地址读出数据； 依次类推， 将一帧数据连续两个时钟周期送入多媒体处理器。
在用户对画面进行截图后， 数字处理器的截图控制单元将图像数据存 入存储器的指定区域， 完成截图操作； 所述截取图像数据保存后， 数字处 理器的截图控制单元响应中断命令， 停止从緩存区读取图像数据， 将接收 的实时图像数据送入显示屏显示， 恢复正常播放。
综上所述， 与现有技术相比较， 本发明技术方案在用户截图时， 对终 端正在播放的视频画面进行预存储处理， 将该时间点之前的一段时间的视 频画面慢放呈现给用户， 使用户可以从容截图， 以至于不会由于反应迟緩， 错过自己想要截的图。 附图说明
图 1是本发明实施例视频处理方法流程示意图；
图 2是本发明实施例终端结构示意图。 具体实施方式
本发明提出一种对视频处理的方法及终端， 解决用户在实时视频画面 播放过程中， 无法准确获得想要截取画面的问题。
为了解决上述问题， 本发明提出了一种对实时视频画面截图的方法及 终端， 其主要思想是： 实时视频图像接收终端在播放实时图像画面时， 设 置一个预截图快捷方式， 若用户对画面感兴趣， 可以点击预截图快捷方式， 终端暂停播放实时画面， 而播放实时画面之前一段时间的画面， 用户可以 对重放的画面进行截图。
下面结合附图和具体实施例对本发明做详细叙述。
如图 2所示， 是本发明实施例终端的示意图， 其包括数字处理器、 显 示器和存储器。 所述数字处理器具有截图控制单元。
终端接收实时视频图像信号， 终端内部的数字处理器一方面接收实时 视频数据， 完成编解码处理， 再送到显示器进行显示； 另一方面， 将实时 数据存入终端的存储器中， 存储器设置两个緩存区， 奇数区和偶数区， 数 据则根据帧头分别存入奇数区和偶数区。 第一帧数据存储到奇数区的最低 位地址， 第二帧数据存储到偶数区的最低位地址。 当接收到第三帧数据时， 第一帧数据存入其相邻高位地址， 第三帧数据存入奇数区的最低位地址， 依此类推。 偶数区做同样的操作， 即当接收到第四帧数据时， 第二帧数据 存入其相邻高位地址， 第四帧数据存入奇数区的最低位地址， 依此类推。 所有的实时数据都是存入奇数区或偶数区的最低位地址， 其余帧的数据根 据帧头， 依次存入递增地址。
点击预截图快捷方式后， 数字处理器将暂停向显示器发送实时图像数 据， 而从奇数緩存区和偶数緩存区的最高位地址交替读出存储的图像数据， 再送入显示器显示。
用户根据终端显示的重放画面进行截图， 得到截图画面。
用户截取画面后， 存储到终端的存储器中， 数字处理器将继续发送实 时图像数据到显示器， 恢复正常播放。
如图 1 所示， 是本发明视频处理方法的具体实施方式， 此方法的实现 主要在于软件方法的设计， 可以在现有终端系统上实现， 无需增加硬件成 本。 本方法能够准确的截取用户所需要的视频图片。
终端接收并播放实时图像画面， 用户需要对画面进行截图时， 可以点 击预截图快捷方式发送预截图指令， 终端暂停播放实时图像画面， 重放之 前一段时间的画面。 在终端预设奇、 偶两个緩存区， 可以使图像数据的读 取速率即帧频降低一半， 使画面实现慢播放， 便于用户成功截取到想要的 画面。
如图 1所示， 上述方法的具体流程如下：
步骤 101 : 终端启动实时视频播放。
在终端上打开实时视频播放软件。
步骤 102: 终端判断是否进行截图。
终端判断是否收到了用户的预截图指令， 若用户选择预截图则执行步 骤 103 , 否则执行步骤 104。
步骤 103: 数字处理器响应预截图指令， 停止发送实时图像数据， 将存 储器中的数据读出并发送到显示屏。
终端接收实时图像数据， 由数字处理器控制， 将数据流分为两个流向， 一组送入显示器显示， 进行正常播放； 另一组送入终端的存储器， 将存储 器的一部分区域作为緩存区， 并分为容量相同的奇数緩存区和偶数緩存区。 此操作在终端启动播放软件时就开始执行。 接收到的第一帧数据， 存入奇 数緩存区的最低位地址； 第二帧数据存入偶数緩存区的最低位地址； 接收 到第三帧数据时， 将第一帧数据存入至相邻高位地址， 第三帧数据存入緩 存区低位地址。 依次类推， 偶数区也做同样的操作， 直至两个緩存区都存 满， 最低位的地址始终保存实时帧数据。
若用户没有选择截图操作， 则终端一方面正常播放， 另一方面在緩存 区中更新緩存数据。 当用户选择了截图操作， 则数字处理器的截图控制单 元接收到该指令后， 停止向显示器发送实时图像数据， 而从緩存区中读出 数据。 设置了奇偶两个緩存区， 两个緩存区的数据交替更新。 第一个时钟 周期， 实时数据存入奇数緩存区的同时， 从奇数区最高位地址读出数据。 下一个时钟周期， 偶数区存入实时数据， 而奇数区不作更新， 仍从奇数区 的最高位地址读出数据。 第三个时钟周期， 奇数区存入实时数据， 而偶数 区不作更新， 从偶数区的最高位地址读出数据。 第四个时钟周期， 实时数 据存入偶数緩存区的同时， 从偶数区最高位地址读出数据。 依次类推。 这 样可以将一帧数据连续两个时钟周期送入多媒体处理器， 作用等同于降低 帧频， 使画面达到慢放的效果。
步骤 104： 正常播放实时视频画面。
步骤 105: 用户根据显示屏上显示的画面进行截图。
显示器显示重放的画面， 用户进行截图操作； 此时显示器显示的是緩 存区的图像数据， 图像帧频减半， 用户可对慢放画面进行截图。
步骤 106: 判断用户是否完成截图操作， 若完成了截图操作且进行了保 存则立即执行步骤 107; 若未进行操作， 则经过一个时间阔值后再执行步骤 107; 这个时间阔值可以由用户设定， 在该实施例中可设置为 5秒或 10秒。
用户对画面进行截图后， 可将图像数据存入存储器的指定区域， 完成 截图操作。 若截图后经过阔值时间没有对图像进行操作， 也将被认为是完 成了截图操作。
步骤 107: 数字处理器收到截图完毕的中断信号， 停止读取存储器緩存 区中的数据， 执行步骤 104。
所截取图像数据保存后， 数字处理器的截图控制单元响应中断命令， 将停止从緩存区读取图像数据， 而将接收的实时图像数据送入显示器显示 , 恢复正常播放。
当然， 本发明还可有多种实施方式， 在不背离本发明精神及其实质的 化， 但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， 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种视频处理方法， 其特征在于： 实时视频图像接收终端在播放实 时视频画面， 并收到预截图指令时， 启动预截图处理， 控制终端暂停播放 实时画面， 播放所述实时画面之前一段时间的画面， 供用户对重放的画面 进行处理。
2、 如权利要求 1所述的方法， 其特征在于： 所述处理是对视频画面的 截图。
3、 如权利要求 1所述的方法， 其特征在于： 实时视频图像接收终端在 播放实时视频画面的同时， 将实时视频数据存入终端的存储器的緩存区。
4、 如权利要求 3所述的方法， 其特征在于： 所述存储器设为奇、 偶两 个緩存区， 数据则根据帧头分别存入奇数区和偶数区。
5、 如权利要求 4所述的方法， 其特征在于： 所述视频数据的第一帧数 据存储到奇数区的最低位地址， 第二帧数据存储到偶数区的最低位地址； 当接收到第三帧数据时， 第一帧数据存入其相邻高位地址， 第三帧数据存 入奇数区的最低位地址， 依此类推； 偶数区做同样的操作， 即当接收到第 四帧数据时， 第二帧数据存入其相邻高位地址， 第四帧数据存入奇数区的 最低位地址， 依此类推； 所有的实时数据都是存入奇数区或偶数区的最低 位地址， 其余帧的数据根据帧头， 依次存入递增地址。
6、如权利要求 4所述的方法，其特征在于： 当用户启动预截图处理时， 终端的数字处理器停止向显示器发送实时图像数据， 从緩存区中读出数据 , 所述两个緩存区的数据交替更新， 第一个时钟周期， 实时数据存入奇数緩 存区的同时， 从奇数区最高位地址读出数据； 下一个时钟周期， 偶数区存 入实时数据， 奇数区不作更新， 仍从奇数区的最高位地址读出数据； 第三 个时钟周期， 奇数区存入实时数据， 偶数区不作更新， 从偶数区的最高位 地址读出数据； 第四个时钟周期， 实时数据存入偶数緩存区的同时， 从偶 数区最高位地址读出数据； 依次类推， 将一帧数据连续两个时钟周期送入 多媒体处理器。
7、如权利要求 6所述的方法，其特征在于： 在用户对画面进行截图后， 所述终端将图像数据存入存储器的指定区域； 截取图像数据保存后， 数字 处理器停止从緩存区读取图像数据， 将接收的实时图像数据送入显示屏显 示， 恢复正常播放。
8、 一种终端， 其特征在于： 包括数字处理器、 显示器和存储器， 所述 数字处理器具有截图控制单元； 所述数字处理器一方面接收实时视频数据， 完成编解码处理， 再送到显示器进行显示； 另一方面， 将实时数据存入终 端的存储器中； 所述存储器设置有緩存区； 所述截图控制单元接收到视频 预截图指令后， 停止向显示器发送实时图像数据， 从緩存区中读出该时间 之前一个时间段的视频数据供用户截图。
9、 如权利要求 8所述的终端， 其特征在于： 所述緩存区设置了奇偶两 个緩存区， 两个緩存区的数据交替更新， 第一个时钟周期， 实时数据存入 奇数緩存区的同时， 从奇数区最高位地址读出数据； 下一个时钟周期， 偶 数区存入实时数据， 奇数区不作更新， 仍从奇数区的最高位地址读出数据； 第三个时钟周期， 奇数区存入实时数据， 偶数区不作更新， 从偶数区的最 高位地址读出数据； 第四个时钟周期， 实时数据存入偶数緩存区的同时， 从偶数区最高位地址读出数据； 依次类推， 将一帧数据连续两个时钟周期 送入多媒体处理器。
10、 如权利要求 9所述的终端， 其特征在于： 在用户对画面进行截图 后， 数字处理器的截图控制单元将图像数据存入存储器的指定区域， 完成 截图操作； 所述截取图像数据保存后， 数字处理器的截图控制单元响应中 断命令， 停止从緩存区读取图像数据， 将接收的实时图像数据送入显示屏 显示， 恢复正常播放。
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