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Image-text superposing method and device

A superimposition method and a technology of layer superposition, applied in image communication, selective content distribution, electrical components, etc., can solve the problems of large number of equipment, high cost, loss of video quality, etc., to ensure quality, reduce production costs, and save The effect of the number of devices

Inactive Publication Date: 2017-09-26
成都德芯数字科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the subtitle machine converts the video signal through AD / DA, thus losing the video quality
Moreover, in the existing method, the number of equipment is large and the cost is high when building the system

Method used

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  • Image-text superposing method and device
  • Image-text superposing method and device
  • Image-text superposing method and device

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0051] It should be noted that like numerals and let...

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Abstract

The invention provides an image-text superposing method and device which are applied to an image-text superposing terminal. The method comprises the following steps: converting received video stream data into a digital video stream; acquiring image-text data; performing layer superposition on the converted digital video stream and the acquired image-text data, so as to generate an image-text data-containing digital video stream; performing compressed encoding on the image-text data-containing digital video stream, so as to generate image-text data-containing TS stream data. According to the image-text superposing scheme provided by the invention, by layer superposition of the input video stream data and the acquired image-text data, then compressed encoding of the image-text data-containing video stream and final video outputting, the image-text superposing scheme improves the system integration degree, so that the quality of a video signal is guaranteed, the quantity of equipment is reduced, and the production cost is lowered.

Description

technical field [0001] The present invention relates to the technical field of radio and television, in particular to a method and device for overlaying images and texts. Background technique [0002] With the development of science and technology and the improvement of people's living standards, video has become an irreplaceable and important way for people to work, study, socialize, and entertain. At present, in the video editing system, the commonly used graphics and text superimposition coding scheme is to first process the video signal through the subtitle machine or the editing system for graphics and text superposition processing, and then send the video signal to the encoder through the SDI and HDMI interface. The encoder encodes the processed video for transmission. Among them, the subtitle machine converts the video signal through AD / DA, thereby losing the video quality. Moreover, in the existing method, the number of devices is large when building the system, an...

Claims

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Application Information

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IPC IPC(8): H04N21/236H04N21/43H04N21/431H04N21/488H04N21/8547
CPCH04N21/23608H04N21/4305H04N21/4307H04N21/4314H04N21/4884H04N21/8547
Inventor 唐俊辉李俊
Owner 成都德芯数字科技股份有限公司
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