Method for quickly displaying 8-bit map under 16-bit display mode of set top box

A display mode and set-top box technology, applied in image communication, color TV components, TV system components, etc., can solve problems such as long time spent and memory buffer occupation

Inactive Publication Date: 2010-12-22
FUJIAN NEWLAND COMM SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process of converting data takes a lon

Method used

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  • Method for quickly displaying 8-bit map under 16-bit display mode of set top box
  • Method for quickly displaying 8-bit map under 16-bit display mode of set top box
  • Method for quickly displaying 8-bit map under 16-bit display mode of set top box

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Experimental program
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Embodiment 1

[0015] Embodiment 1: This embodiment provides a method for quickly displaying an 8-bit image in a 16-bit display mode in a 565 format of a set-top box. figure 1 Further explanation of its steps:

[0016] Step 10. First put the 256 32-bit swatch data in the 8-bit swatch image data as Figure 5 shown, according to the formula Rn=(Xn&0x00ff0000)>>16; Gn=(Xn&0x0000ff00)>>8; Bn=(Xn&0x000000ff); the corresponding red, green and blue component values ​​Rn, Gn, Bn, Among them, Xn is one of 256 32-bit color palette data, and then according to the formula Mn=((Rn>>3)>3)>3); Convert the three color components to 16-bit swatch data, where Mn is the converted 16-bit swatch data in 565 format such as image 3 shown;

[0017] Step 20, read the data of all pixels in the 8-bit color palette picture data and read, and use the read value as an index to search in the converted 16-bit color palette data of the 565 format;

[0018] Step 30: Display the found 16-bit color palette data on the scr...

Embodiment 2

[0019] Embodiment 2: Provide a method for quickly displaying an 8-bit image in a 16-bit display mode of the set-top box 1555 format, combined with figure 2 Further explanation of its steps:

[0020] Step 10. First put the 256 32-bit swatch data in the 8-bit swatch image data as Figure 5 shown, according to the formula Rn=(Xn&0x00ff0000)>>16; Gn=(Xn&0x0000ff00)>>8; Bn=(Xn&0x000000ff); the corresponding red, green and blue component values ​​Rn, Gn, Bn, Among them, Xn is one of 256 32-bit swatch data, and then according to the formula Mn=0x8000|((Rn>>3)>3)>3 ); convert the three color components into 16-bit swatch data, where Mn is the converted 16-bit swatch data in 1555 format such as Figure 4 shown;

[0021] Step 20, read the data of all pixels in the 8-bit swatch image data and read, and use the read value as an index to search in the converted 16-bit swatch data of the 1555 format;

[0022] Step 30: Display the found 16-bit color palette data on the screen menu adjus...

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Abstract

The invention discloses a method for quickly displaying an 8-bit map in a 16-bit display mode of a set top box. The method is characterized by comprising the following steps of: converting 256 32-bit color plate data in 8-bit color plate picture data into 16-bit color plate data by a formula and simultaneously reading data values of all pixels and 16-bit color plate data in the 8-bit color plate picture data and searching; and displaying the searched 16-bit color plate data by a screen menu adjusting mode of the set top box through drawing point data of the set top box. The invention avoids the use of a memory buffer area so as to save large memory space and can quickly realize that the 8-bit picture data is displayed in the 16-bit display mode.

Description

【Technical field】 [0001] The invention relates to an embedded technology, in particular to a method for rapidly displaying an 8-bit image in a 16-bit display mode of a set-top box, and in particular belongs to the technology in the field of set-top boxes. 【Background technique】 [0002] With the gradual promotion of digital TV and the improvement of people's display requirements, the display of digital TV set-top boxes as digital TV terminal products has gradually transitioned from the 8-bit color panel display mode to the more outstanding 16-color true color display mode. Due to the limitation of the storage medium of the TV set-top box itself, a large number of interface elements are still composed of 8-bit bitmaps with swatches. At the same time, because gif files are widely used on the set-top box, the gif file itself has an 8-bit image storage mode with swatches. Therefore, 8-bit swatch image data must be converted to be displayed in 16-bit display mode. When the tradi...

Claims

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Application Information

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IPC IPC(8): H04N5/00H04N5/445
Inventor 方立
Owner FUJIAN NEWLAND COMM SCI TECH
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