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Method and device for superposition processing of image data or audio data

A technology of audio data and image data, applied in the direction of electrical digital data processing, various digital computer combinations, instruments, etc., can solve the problems of CPU resource occupation, high power consumption, slow processing speed, etc., and achieve convenient implementation and low power consumption , the effect of simple method

Active Publication Date: 2011-05-18
FUZHOU ROCKCHIP SEMICON
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the image overlay and audio overlay operations are all processed by the system processors of the audio and video equipment. The processing method is: the CPU performs image overlay operations and audio overlay operations respectively, which will take up a lot of CPU resources, and the processing speed is slow. high power consumption

Method used

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  • Method and device for superposition processing of image data or audio data
  • Method and device for superposition processing of image data or audio data
  • Method and device for superposition processing of image data or audio data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1. Superposition of image data only

[0048] The processing flow of the main controller 41 is:

[0049] Step 11, read the starting flag bit from register 42, judge whether to start, yes: jump to step 12; No: carry out step 11 again;

[0050] Step 12, read out the start address (being called address variable A) of two groups of image data A and B that will carry out overlay processing from register 42 0 and address variable B 0 ) and the address stored after the operation (called the variable C 0 );

[0051] Step 13. Determine whether FIFO-1 is full? Yes: skip to the next step; No: access the memory controller 2 through the main device bus interface 45, read a piece of image data A from the memory and store it in FIFO-1, and store the address variable A 0 Add the read length, and generate in the new address variable A 0 , for the next read;

[0052] Step 14. Determine whether FIFO-2 is full? Yes: skip to the next step; No: access the memory controller ...

Embodiment 2

[0060] Embodiment 2, superposition of audio data only

[0061] The processing flow of the main controller 41 is:

[0062] Step 11, read the starting flag bit from register 42, judge whether to start, yes: jump to step 12; No: carry out step 11 again;

[0063] Step 12, read out from register 42 the initial address (being called address variable A) of two groups of audio data A and B that will carry out overlay processing 0 and address variable B 0 ) and the address stored after the operation (called the variable C 0 );

[0064] Step 13. Determine whether FIFO-1 is full? Yes: skip to the next step; No: access the memory controller 2 through the main device bus interface 45, read a piece of audio data A from the memory and store it in FIFO-1, and store the address variable A 0 Add the read length, and generate in the new address variable A 0 , for the next read;

[0065] Step 14. Determine whether FIFO-2 is full? Yes: skip to the next step; No: access the memory controlle...

Embodiment 3

[0073] Embodiment 3, superposition of image data and audio data

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Abstract

The invention provides a method and device for superposition processing of image data or audio data. The method is implemented by a superposition processor which is arranged on a master apparatus and connected with a bus. The device mainly comprises a main controller part and an operator part, wherein the main controller part is mainly used for reading the data to be superposed and storing in twoFIFOs (first in first out); the operator extracts and operates the data and then stores in another FIFO; and the main controller writes the data of FIFO-3 into memory. The method is simple and convenient to implement; the superposition processor is arranged on an SOC (system on chip) and operates independently without occupying system resources or influencing the processing speed of the system, and the power consumption is low.

Description

technical field [0001] The invention relates to a method and device for processing image data or audio data in audio and video equipment, which are used for superposition operation of image data or audio data. Background technique [0002] Devices with image output must use the superposition operation of image data, and devices with audio output must also use the superposition operation of audio data, and audio and video equipment also involve the operation of image superposition and audio superposition respectively. At present, the image overlay and audio overlay operations are all processed by the system processors of the audio and video equipment. The processing method is: the CPU performs image overlay operations and audio overlay operations respectively, which will take up a lot of CPU resources, and the processing speed is slow. High power consumption. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an ima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/18G06F15/16
CPCY02B60/1228Y02B60/1235Y02D10/00
Inventor 洪锦坤
Owner FUZHOU ROCKCHIP SEMICON
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