Method for switching subtitle projects in different systems

A subtitle and standard technology, applied in the field of subtitles, can solve problems such as waste of manpower and material resources, and achieve the effect of reducing burden, saving resources and time

Inactive Publication Date: 2012-10-17
CHINA DIGITAL VIDEO BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] (3) Different standard environments require different subtitle projects to support. For the simultaneous broadcast of high-definition and standard-definition of the same progra

Method used

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  • Method for switching subtitle projects in different systems
  • Method for switching subtitle projects in different systems
  • Method for switching subtitle projects in different systems

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0024] Taking the standard-definition PAL system to high-definition HD1080i system as an example, explain the switching process of the graphic production system, which mainly includes the following steps:

[0025] Step 1: Terminate the rendering engine and broadcasting engine. When switching the format of the graphic system, you must first terminate the rendering engine and the broadcasting engine, and shut down the work of the system. The rendering engine is responsible for the subtitle rendering of the graphic system, and the broadcasting engine is The manager of the rendered subtitle broadcast logic.

[0026] Step 2: Close the subtitle card, close the subtitle card means to stop the output of the subtitle card.

[0027] Step 3: Use the new standard (HD1080i) to initialize the subtitle card and restore the...

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Abstract

The embodiment of the invention discloses a method for switching subtitle projects in different systems, which is capable of switching the different television systems inside a graphic and text system under the condition that a subtitle project frame is not closed, and capable of automatically switching the subtitle projects in the different systems. According to the method, when upper and lower switching modes are determined, a subtitle project file which has the optimal effect and is suitable for the novel system can be automatically generated, so that the burden of a graphic and text information producer is greatly lightened, and resources and time are saved.

Description

technical field [0001] The invention relates to the fields of subtitles and the like, in particular to a method for switching subtitle projects under different standards. Background technique [0002] The TV system is also called the TV signal standard, which is used to realize TV image signals and audio signals, or other signal transmission methods. Generally speaking, it refers to the display format of TV images and the technical standards adopted by this method and format. , The distinction of the system mainly lies in the difference of the frame frequency (field frequency), the difference of the resolution rate, the difference of the signal bandwidth and the carrier frequency, the difference of the conversion relationship of the color space and so on. Common TV systems in China include PAL, NTSC, HD 1080i 25, etc. Among them, the PAL system is interlaced scanning, its power supply frequency is 50Hz, the field frequency is 50 fields per second, the frame frequency is 25 f...

Claims

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Application Information

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IPC IPC(8): H04N5/278H04N7/01
Inventor 吕精华郭红艳廖健饶文辉
Owner CHINA DIGITAL VIDEO BEIJING
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