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Projector capable playing captions and caption playing method

A technology for projectors and subtitles, which is applied to projection devices, components of color TVs, components of TV systems, etc., can solve the problems of inconvenient use, bulky projection equipment, and increase the cost of projection equipment, etc. small investment

Active Publication Date: 2009-07-22
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method causes the projection equipment to be bulky and inconvenient to use, and also increases the cost of the projection equipment

Method used

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  • Projector capable playing captions and caption playing method
  • Projector capable playing captions and caption playing method
  • Projector capable playing captions and caption playing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment one: subtitle storage module 3 is the intrinsic module inside the present invention, also can be provided with a region on the non-volatile memory of the present invention, makes it can store subtitle data information, subtitle information and OSD (on-screen display, namely The Char data needed in the screen menu) is stored together, but, in the present embodiment, the non-volatile memory space is generally not enough to store all the characters.

[0070] The embedded system run by each module in this embodiment does not directly support the display of characters, but needs to first store the characters to be displayed as graphics, and then display them in the form of dot matrix graphics.

[0071] Since the non-volatile memory space is limited, when setting the projector OSD, make full use of the non-volatile memory space of the embedded system, and convert as many characters as possible into graphics and store them on the non-volatile memory. In addition to ...

Embodiment 2

[0078] Embodiment 2: Aiming at the deficiencies in Embodiment 1, some modifications are made in this embodiment.

[0079] The projector does not load the character graphics that may be used in subtitles into the non-volatile memory when setting the OSD, but converts the characters used in the subtitles into corresponding graphic data when making subtitles, and then converts the subtitles Graphics data, subtitle character index data, and subtitle control data are loaded together into nonvolatile memory.

[0080] The advantage of this embodiment is that it can break through the limitation of subtitle production caused by loading character graphics data first, but due to the limited space of non-volatile memory, the length of subtitles is still subject to certain restrictions, that is, subtitles exceeding a certain length cannot be made and cannot Make subtitles with characters exceeding the limit.

Embodiment 3

[0081] Embodiment 3: To address the shortcomings of the above two embodiments, some modifications are made in this embodiment.

[0082] The subtitle file is not loaded to the projector at one time, but loaded several times at a certain amount each time. That is, when making subtitles, determine the limit of subtitle length and number of characters, and divide the entire character into multiple paragraphs. Always connect the computer while the projector is working. When displaying subtitles, first load a section of subtitles on the projector, and then load the next section of subtitles to the projector after this section of subtitles is displayed or after the display is completed, so that subtitles without length and character number restrictions can be realized.

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PUM

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Abstract

This invention discloses a title-playing projector and the method how to play it, the projector was made up with several units: the electrical supply unit, the order inputting unit, the video inputting connecting port unit, the video handling unit, the display outputting unit, the central controlling unit, the title memory unit and the title handling unit. The method was that: the central control unit receives the information from the order inputting unit, and controls the title handling unit to read the information of the title memory unit. And at the same time the central control unit controls the video handling unit to read and processes the information from the video inputting port unit, later sends the treating information to the display outputting unit. The display outputting unit receives the title graphical information and makes it superimposed with the video information, finally outputs the display figure.

Description

technical field [0001] The invention relates to a projector and a control method thereof, in particular to a projector capable of playing subtitles and a method for the projector to play subtitles. Background technique [0002] A projector is a commonly used display device, which can process various input video signals and display them on the screen by projection, so as to realize large-size, high-quality image display at a lower cost. Because the projector has the characteristics of high brightness, large screen size, low cost of upgrading the screen size, small size, and easy to move, projection display equipment has become the best display equipment for conferences, teaching, exhibitions and other occasions. [0003] As attached to the manual figure 1 As shown, the current projector mainly includes a command input module, a power supply module, a central control module, a video input interface module, a video processing module, and a display output module. [0004] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/00H04N5/278
Inventor 王振华
Owner LENOVO (BEIJING) LTD