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Device for controlling input and output of frames

A screen and input clock technology, applied in the field of devices that control screen input and output, can solve problems such as high costs

Active Publication Date: 2010-07-28
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the same way, to achieve the same supported image quality, using two image buffers requires a larger-capacity buffer, which will result in higher cost expenditures

Method used

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  • Device for controlling input and output of frames
  • Device for controlling input and output of frames
  • Device for controlling input and output of frames

Examples

Experimental program
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Embodiment Construction

[0027] Please refer to figure 1 , which is a block diagram of the first embodiment of the device for controlling picture input and output. The device 1 for controlling picture input and output proposed by the present invention includes: a buffer 10 , a buffer control circuit 20 and a picture writing controller 30 .

[0028] Depend on figure 1 It can be seen that the device 1 for controlling image input and output can receive the image data from the source device 2 and output the image data to the destination device 3 for display. Wherein, the image data includes a plurality of frames, and the frames can be frames or fields.

[0029] In addition, the source device 2 provides input control parameters (for example, at least one of input vertical synchronization parameters (InputVsync), input horizontal synchronization parameters (Input Hsync), input data enable parameters (Input DE) and pixel input clock information (Input Pixel Clock) to the device 1 that controls the input a...

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Abstract

The invention discloses a device and a method for controlling the input and output of frames, which are used for receiving the image data of a source device and outputting the image data to a target device, wherein the image data comprises a plurality of frames; the source device provides one or more input control signals to the device for controlling the input and output of the frames; the one or more input control signals comprise input data enabling parameters and pixel input clocks; the target device provides one or more output control signals to the device for controlling the input and output of the frames; and the one or more output control signals comprise output data enabling parameters and pixel output clocks. The device for controlling the input and output of the frames comprises a buffer, a buffer control circuit and a frame writing controller.

Description

technical field [0001] The present invention relates to a device and method for controlling screens, in particular to a device and method for controlling screen input and output. Background technique [0002] The monitor is used to display images, but sometimes the monitor encounters a situation where the input frame rate is different from the supported output frame rate. The frequency (usually 60Hz) varies. And when the frame rate between the input frame and the output frame is different, frame rate conversion (FRC) must be performed. [0003] In the frame rate conversion method, a buffer is traditionally used to temporarily store frame data, and most of the buffers can be divided into one frame buffer or two frame buffers. For a picture buffer, because the same picture buffer is input and output at the same time, when the speed difference between the picture input to the picture buffer and the picture output from the picture buffer is too large, it is easy to cause the f...

Claims

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Application Information

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IPC IPC(8): G09G5/395G09G5/00
Inventor 洪嘉隆林佐柏张贤钧周裕彬
Owner REALTEK SEMICON CORP
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