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Subtitle window display device and display method thereof

一种窗口显示、字幕的技术，应用在编辑/组合图形或文字、电视、彩色电视的零部件等方向，能够解决硬件需求与成本高等问题，达到避免硬件需求与成本过高的效果

Inactive Publication Date: 2010-07-14
MSTAR SOFTWARE R&D (SHENZHEN) LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a subtitle window display device and display method, which can avoid traditional defects such as hardware requirements and high cost

Method used

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  • Subtitle window display device and display method thereof
  • Subtitle window display device and display method thereof
  • Subtitle window display device and display method thereof

Examples

Experimental program
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Embodiment Construction

[0044] Please refer to Fig. 3(a), which is a functional block diagram of a TV system capable of executing the subtitle window display method developed in this case, which includes a display 32, a TV chip 30, and a system memory 31 independent of the TV chip 30. , such as DRAM, the TV chip 30 includes a microcontroller 301 , a graphics engine 302 , a SRAM 303 , a memory interface unit 304 , a graphics output processor 305 and an offset register 306 .

[0045] Please refer to FIG. 3( b ), which is a schematic flowchart of a method for displaying a subtitle window according to a preferred embodiment of the present invention. In this embodiment, the graphics engine 302 generates a set of subtitle frame image data according to the content of a received Define Window command (step S11), and then writes the set of subtitle frame image data into the system memory 31 in a memory buffer 310 (step S12), but the size of this group of image data is not limited to the height limit of the wi...

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Abstract

The invention discloses a title window display device and a display method thereof, which can avoid the traditional loss caused by hardware requirements and over high costs. The title window display method comprises the following steps: receiving a first window definition command by a television chip, wherein the first window definition command comprises a first window size and first title contents; generating first title frame image data according to the first title contents and storing the first title frame image data in a system memory; reading and display the first part of the first title frame image data stored in the system memory according to a first offset value stored in an offset value buffer and the first window size; and modifying the first offset value stored in the offset value buffer into a second offset value after the preset time, and then reading and displaying the second part of the first title frame image data according to the second offset value and the first window size.

Description

technical field [0001] The invention relates to a subtitle window display device and display method, in particular to a subtitle window display device and display method applied to a television system. Background technique [0002] With the trend of digitization of global TV programs, the demand for digital TV is increasing day by day. At present, digital TV standards are mainly divided into two mainstreams: the European digital TV standard (DVB) and the American digital TV standard (ATSC). In the digital television standard of the United States, a subtitle specification is defined especially for hearing-impaired viewers, namely the so-called Digital Television Closed Caption (DTVCC for short). Mainly in the mute state, in addition to displaying the dialogue content of the characters, it also displays some descriptive sentences to describe what is happening in the current screen, such as the background sound in the screen, etc., thereby helping the hearing-impaired to under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/93G06T11/60
CPCH04N21/436
Inventor 李成浩
Owner MSTAR SOFTWARE R&D (SHENZHEN) LTD