TW8810-PC2-GR

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Working with video requires a large number of calculations and hence dedicated video processing components are needed. The TW8810-PC2-GR is a line-based video processor from Toshiba that is designed to assist with the processing and refresh of video signals. It is categorised as a Linear – Video Processor. This article will discuss the application fields and working principles of the TW8810-PC2-GR.

Applications of the TW8810-PC2-GR

The TW8810-PC2-GR is suitable for use in various different applications and the types of signal that can be processed include NTSC (480i), PAL (576i) and HD complex resolution signals such as 1080i, 720p, and XGA. This video processor can support up to 2025 lines and can be used with both LCD and CRT displays.

The TW8810-PC2-GR is used as a video processor which refreshes images with the exact frequency the display requires, this ensures the image quality is maintained and it delivers a stable video signal output without any interference. This video processor can also be used in broadcast and videoconferencing along with video on demand applications and TV game consoles. Additionally, this processor can be used to edit and compose video for digital broadcasting.

Working Principle of the TW8810-PC2-GR

The working principle of the TW8810-PC2-GR is based around a linear type of video processing. This process essentially refreshes each frame of video individually, meaning the lines are updated in sequence from top to bottom, left to right. This type of processing is done in stages, with each stage processing a different part of the signal.

The first stage of the TW8810-PC2-GR is the ‘input interface’. This part of the processor accepts inputs which could be analogue or digital signals. The analogue signals are converted to a digital value and then sent to the next stage. The digital signals, however, are sent directly to the next stage without needing to be converted.

In the second stage of the processor, the ‘edge detection’ stage takes place. In this stage, the processor detects the edges of the frame and noise points of the input signal, before deciding which type of algorithm needs to be used for the next stage. In the next stage, ‘temporal processing’, the noise is further reduced.

The fourth stage of the processor is the ‘frame buffer’. This stage stores the current frame that is being worked on, before it is sent to the fifth stage. In the fifth stage, ‘resampling’ takes place, which is where the frequency of the video is adjusted in order to be compatible with the frequency of the display. The final stage is the ‘output interface’, which converts the image data back to an analogue or digital signal, depending on the display being used.

Summary

The TW8810-PC2-GR is a Linear – Video Processor from Toshiba. It is designed to assist with the processing and refresh of video signals and can be used for various applications, including NTSC, PAL and HD complex resolution signals. The processor works in stages, which include edge detection, temporal processing, frame buffering, resampling and output interface, in order to deliver a clear and stable video signal output.

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