Contact us

A new window will open A new window will open

Bright, Beautiful, Great and Small - Displays Compression Algorithms Address Device Diversity

Bright, Beautiful, Great and Small - Displays Compression Algorithms Address Device Diversity

Items of consumer electronics equipment are now being supplied in an expansive array of different form factors (from large high-definition flat panel televisions, through to tablet computers and smartphones, right down to smaller formats like smart watches). The sort of activities that users want to engage in, whether it is interacting on social media, sharing photos or playing games, need to be equally applicable regardless of the device employed. Most importantly of all users want to be able watch video material from whatever device they chose, wherever they are without having to compromise on the quality of the experience. As a result, design engineers face a major challenge. They need to deal the increasing device diversity now being witnessed, by developing flexible ways of rendering high-definition content so that it can be accessed via a wide range of display types and sizes.

Users have increasingly high expectations and satisfying them can prove difficult. To deliver the sharp and vibrant graphics that are being demanded means the display link, which connects the host system to the display panel, must to be implemented with maximum effectiveness. It should be noted that the elevated interface data rates needed to support high display resolutions and rapid screen refresh rates have a detrimental effect on the power consumption of the system. This is something that must be avoided in portable electronics goods, as it will shorten the time between recharges and thus be extremely inconvenient for the user.

The display data rates for video content delivery are accelerating as each new generation of television is introduced (HD, 4K and 8K). Simultaneously the resolutions of smartphone displays are continuing to increase at a phenomenal pace. The pressures that are going to thereby be placed onto the display system resources of portable electronics devices in the near future will be enormous. Employment of visually lossless compression algorithms - such as display stream compression (DSC) - presents one method of solving this growing problem.

DSC can help to reduce pixel data rates (by as much as 66%) and thus mitigate the impact on both link bandwidth and system power. Such compression also has benefits in terms of lowering latency levels and requiring less data storage. As yet, however, through there are is a very strong case for standardising the display interface, application processors currently being specified for modern portable electronics designs do not always support DSC. Conversely, some processors will have DSC capabilities, but won’t have enough DSC lanes available to connect directly to the commoditised off-the-shelf display modules that are most commonly utilised.

Highly advanced bridge ICs, where DSC functionality has been embedded, are now being brought to the market. Through these chips, the compression needed to fully address the pixel data rate and system power budget issues discussed (as well as other concerns, such as bill of materials costs) can be achieved.

To learn more about DSC compression click here:

Click here to learn more about DSC compression

To Top
·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.