CN101990125A - Method for dynamically capturing screen of digital television in real time - Google Patents

Abstract

The invention provides a method for dynamically capturing a screen of a digital television in real time. A set top box performs video frame decoding on photo-electric scanner (PES) data streams through a video decoder to form video frame data in a red, green and blue (RGB) format, captures currently played video frame data to be converted into RGB 24-bit data, and samples, compresses and quantizes the data so as to form a picture in a certain format. The method has substantive help for the maintenance and update of set top box products, and can greatly reduce unnecessary production cost and operating time.

Description

The method of the real-time active screen sectional drawing of Digital Television

[technical field]

The present invention relates to a kind of technical field of digital television set-top, relate in particular to the method for the real-time active screen sectional drawing of a kind of Digital Television.

[background technology]

At present, along with the development of Digital Television, top box of digital machine is promoted in each corner in the world and is popularized.Along with function is constantly perfect, the polytropy of digital TV picture, the variation of menu interface, intellectuality, people need store and appreciate some close friend, excellent picture, want to keep fine moment here, thereby dynamic real-time video interception technology are used and gone out; Because the increase of set-top box quantity, when the variety of issue that machine occurs (such as abnormal signal, upgrading failure, manual operation is unusual or the like) will cause very big maintenance, difficulty is very big.At present, set-top box functionality on the market is constantly perfect, can't realize that but active screen sectional drawing function stores with the picture form, for use in design, and purposes such as maintenance.By the function of screenshot capture, can be with video, menu interface is preserved with the picture form, the operating procedure of problem is expressed with the picture form, be sent to the technical staff, the maintenance and the renewal of product had substantial help, can reduce unnecessary cost and time in a large number.

[summary of the invention]

The technical problem to be solved in the present invention, be to provide the method for the real-time active screen sectional drawing of a kind of Digital Television, realization is preserved video, menu interface with the picture form, maintenance and the renewal to product has substantial help like this, can reduce unnecessary cost and time in a large number.

The present invention is achieved in that the method for the real-time active screen sectional drawing of a kind of Digital Television, it is characterized in that: comprise the steps:

Step 10, set-top box receive the PES data flow in the multimedia by Video Decoder, and the PES data flow is carried out the frame of video decoding, form the video requency frame data of rgb format;

Step 20, with the view data of set-top box OSD menu interface, by set-top box view data is analyzed and is handled, convert the view data of rgb format to, and integrate with described video requency frame data and to be stored in the set-top box OSD internal storage data buffering area;

Step 30, set-top box are carried out real-time and dynamic and are refreshed the set-top box menu screen, play the video requency frame data of integrating the every frame in back one by one;

Step 40, user are provided with the size of the picture in the video requency frame data in playing, the parameter of picture clarity according to the menu function of set-top box, and intercept current displaying video frame data by above-mentioned steps, are converted into 24 bit data of RGB;

Step 50, set-top box are according to the parameter acquiring message bit pattern head of the picture size in 24 bit data of the RGB after changeing, pixel, color, again according to bitmap file head, described message bit pattern head, color table, data bitmap in the data, by coded system 24 bit data are sampled, compress, quantize to form picture, the form of described picture comprises jpg, bmp, png;

Step 60, described picture-storage is stored in the External memory equipment in the flash of set-top box store memory or by the usb interface.

The present invention has following advantage: by set-top box OSD layer the set-top box screen is carried out real-time sectional drawing, and the picture that is cut stored with the jpg form, reduced set-top box flash store memory space like this, the present invention has substantial help to the maintenance and the renewal of set-top box product, can improve production cost and operating efficiency.

[description of drawings]

Fig. 1 is the inventive method schematic flow sheet.

[embodiment]

The present invention is further illustrated in conjunction with the embodiments below with reference to Fig. 1.

The method of the real-time active screen sectional drawing of a kind of Digital Television is characterized in that: comprise the steps:

Step 10, set-top box are passed through Video Decoder, receive the PES data flow in the multimedia, the PES data flow is carried out the frame of video decoding, the video requency frame data that forms rgb format (generally forms the RGB565 form, the efficient of set-top box processes is than higher like this, also can convert RGB888, RGB1555 etc. to);

Step 20, with the view data of set-top box OSD menu interface, by set-top box view data is analyzed and is handled, convert the view data of rgb format to, and integrate with described video requency frame data and to be stored in the set-top box OSD internal storage data buffering area;

Step 30, set-top box are carried out real-time and dynamic and are refreshed the set-top box menu screen, play the video requency frame data of integrating the every frame in back one by one;

Step 40, user are provided with (can form that select to store picture be set by this) according to the menu function of set-top box to the size of the picture in the video requency frame data in playing, the parameter of picture clarity, and intercept current displaying video frame data by above-mentioned steps, 24 bit data that are converted into RGB (generally form 24 bit data of RGB888 form, also can convert RGB565, RGB1555 etc. to);

Step 50, set-top box are according to the parameter acquiring message bit pattern head of the picture size in 24 bit data of the RGB after changeing, pixel, color, again according to bitmap file head, described message bit pattern head, color table, data bitmap in the data, by coded system 24 bit data are sampled, compress, quantize to form picture, the form of described picture comprises (generally being the jpg forms) such as jpg, bmp, png herein;

Step 60, described picture-storage is stored in the External memory equipment in the flash of set-top box store memory or by the usb interface.

In a word, the present invention carries out real-time sectional drawing by set-top box OSD layer to the set-top box screen, and the picture that is cut is stored, and the operating procedure of problem is expressed with the picture form, be sent to the technical staff, the maintenance and the renewal of product had substantial help.

The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.

Claims (1)

1. the method for the real-time active screen sectional drawing of Digital Television is characterized in that: comprise the steps:

Step 10, set-top box receive the PES data flow in the multimedia by Video Decoder, and the PES data flow is carried out the frame of video decoding, form the video requency frame data of rgb format;

Step 20, with the view data of set-top box OSD menu interface, by set-top box view data is analyzed and is handled, convert the view data of rgb format to, and integrate with described video requency frame data and to be stored in the set-top box OSD internal storage data buffering area;

Step 30, set-top box are carried out real-time and dynamic and are refreshed the set-top box menu screen, play the video requency frame data of integrating the every frame in back one by one;

Step 40, user are provided with the size of the picture in the video requency frame data in playing, the parameter of picture clarity according to the menu function of set-top box, and intercept current displaying video frame data by above-mentioned steps, are converted into 24 bit data of RGB;

Step 50, set-top box are according to the parameter acquiring message bit pattern head of the picture size in 24 bit data of the RGB after changeing, pixel, color, again according to bitmap file head, described message bit pattern head, color table, data bitmap in the data, by coded system 24 bit data are sampled, compress, quantize to form picture, the form of described picture comprises jpg, bmp, png;

Step 60, described picture-storage is stored in the External memory equipment in the flash of set-top box store memory or by the usb interface.

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