We've already had an in-depth discussion about the astonishing returns from the technological innovations of the previous generation and the corresponding architectural changes, and this time we will discuss specific performance improvements and improvements for end users.
New Changes First, the Mali-D71 reduces the workloads that require GPU processing by overlay, rotate, high quality zoom, gamma / de-gamma and other advanced image processing tasks in fixed-function hardware - all in the multimedia pipeline The final phase, which means that before it sends the final output to the screen, means that the GPU does not have to be involved in these operations. In addition, it takes only once rather than twice as many times to complete these operations, thus drastically improving the system For a more specific example, to scale a 4K video layer for a 1440p device and composite it with a sophisticated immersive UI graphics layer, in contrast to using the GPU software for the same operation, the SoC can save 30% .
The Mali-D71 delivers twice the performance in the same area when operating in parallel mode compared to its predecessor. Unlike previous generations, the Mali-D71 can be used repeatedly while driving a single display Two display core resources.Thus, it can double, rotate and scale the number of layers, but does not increase the overall area.This means that in the same chip area with the previous generation, Mali- The D71 offers new enhancements such as zooming and splitting, uncompressed layer AFBC encoding, faster AFBC decoding and MMU optimization. When the Mali-D71 display processor is used with a simultaneously released CoreLink MMU-600, the integration The Translation Buffer Unit (TBU) and the tight coupling of both through the DTI interface significantly reduce MMU latency.
In addition, quadruple delay tolerance is achieved, allowing Mali-D71 to quadruple the latency of the system bus when achieving the same display performance over the previous generation Mali-DP650. The Mali-D71 achieves substantial memory subsystem Optimization. It allows doubling the number of pending requests, removes uncompressed rotation from live paths, and converts uncompressed linear layers into AFBC1.2 tiled layers for more efficient rotation. It is important to have a high-performance display process that outputs 4K frames at a frame rate of 60-120 fps.To do this, the display processor needs to make the most of the time it takes to occupy the system bus, in milliseconds Prefetch pixels for the unit to ensure that the buffer has sufficient content at all times.If the display does not receive the pixel in time, it will due to lack of content frame loss problem, resulting in glitches or obvious artifacts on the screen, affecting the quality.
Finally, the Mali-D71 doubles the pixel throughput to deliver the ultimate VR 4K120 performance, which can be achieved by driving a single display in the new parallel mode.When only one output needs to be output for one display Parallel mode splits the image in half and efficiently uses half of the image for each of the two sets of resources.For 4K60 and below workloads, parallel mode reduces the clock frequency in half to support lower voltages for power-saving performance. For 4K120 workloads, parallel mode is a mandatory requirement that doubles the pixel throughput for the same target frequency, or 4K60 if parallel mode is not used, so the ability to halve frame processing requirements through parallel processing Means that power consumption in half or double the performance.
The big thing behind the fact that Arm does not actually make physical products, it takes time for our IPs to become chips, not to mention the real devices being produced, and that means we have to stay one step ahead (at least) Focusing on the disruptive effects of the state of the art on the latest technologies will enable Arm-based products to embrace these technological trends, and some of the specific trends that emerge in the display industry are some of our plans to take advantage of the new Komeda display architecture and the overall rollout The performance and characteristics of the solutions implementation have a significant impact. For a discussion of these trends, you can click here for a more detailed introduction by one of my colleagues recently, and I'll focus on how Arm's new display solution works These challenges.
1. High Dynamic Range The first element that came up to appear in the world of display was the high dynamic range (HDR). HDR content was encoded in a wider dynamic range to provide more subtle color and contrast, Darker areas become darker and more level rich, brighter areas become brighter, sharper and more saturated, avoiding them becoming blurred as we sometimes see on the image in bright light. Many content creators use HDR to deliver the ultimate viewing experience, which is a waste of time if they can not be properly displayed. With the Mali-D71 and Assertive Display 5, from your favorite content providers like Netflix and Amazon Video Get HDR content and then display it in HDR quality on any type of panel (even SDR) The Mali-D71 itself captures the overlap of HDR video and graphical UI, blending them in a standard gamma-coded with full Gamut, and sent to Assertive Display 5 Convert to the correct color range for SDR display.
This means that if you're using just a normal display processor, content creators are simply wasting their time designing their designs in HDR 10. With the Mali-D71, you can reproduce the equally awe-inspiring HDR quality, the lower specifications of the display is no exception, the full retention of these elements of art originality.
2. VR As we discussed many times before, Mobile VR poses yet another technical challenge. It has been difficult for the display processor and the rest of the system to meet just the real-time latency and data throughput requirements, Not to mention the display device near the eyes, the pixel quality has higher requirements here to talk about the delay tolerance we mentioned earlier, as well as parallel mode power saving and performance improvement.However, The Mali-D71 comes in handy with the new CoreLink MMU-600. The MMU-600 is optimized for memory subsystems that allow the Mali-D71 to take advantage of optimized memory subsystems to drive the highest performance VR The display reaches a level of 4K120fps, allowing longer delays on the system bus.
3. Multi-window display As people use mobile phones more and more high, then our demand for multi-tasking is also getting higher and higher.The current desktop has been able to help us to sit in front of the computer, half of the display To show online meetings and on the other email or Facebook content, and now we want to be able to do the same amount of multitasking on a mobile device, which means that the display subsystem needs to be more powerful in order to make these differences Of the previous generations of display processors can handle up to 4 layers of data, the Mali-D71 doubled, can be handled in a single display mode 8 Android superimposed layers plus the ability to split the screen, which It means that the Mali-D71 can handle your UI, navigation bar, status information, and several completely different applications without any hassle. 4. Many things in the screen, screen, screen, and technology industries, Is king .To adjust your applications and games, so that they run on multiple platforms, it is difficult .Display panel as well, the display panel based There are so many points in performance and performance that it's really hard to tell the display processor that it might need to get that information from the display panel and vice versa, but that's where the Arm ecosystem comes in. By working with a wide variety of experts in the industry, we can lock in a variety of panel suppliers, ensuring that our display solutions have access to the information they can use to optimize content and deliver the best viewing experience across a wide range of panels.
Showing ecosystems gives us an unprecedented opportunity to work with experts to create the best experience for our users.
The VR and HDR usage scenarios require WQHD + and 4K resolutions and a 90/120 frame rate, presenting new challenges for the consumer electronics market in terms of power, cost and time to market. The Arm's Mali-D71 Display Processor And Synopsys' DesignWare MIPI DSI Host Controller IP and MIPI D-PHY IPs, which are chip-verified and configured with VESA DSC encoders, provide a complete display solution that seamlessly integrates these key IP components into different data transfer modes and display panels Features on the application processor - Synopsys senior product marketing manager Hezi Saar
The Mali-D71 delivers unprecedented 4K120 pixel throughput for a new generation of display-based mobile products such as AR / VR helmets.Using the Mali-D71 and Hardent's VESA DSC combination solution, Within a range of 3x less transmission bandwidth through visual lossless compression, enabling Alain Legault, the company's vice president of IP products, to experience what makes users feel more immersive.
Arm and Analogix are actively working together to develop an agreement for head-mounted VR / AR-enabled processors and display driver ICs to optimize workloads with the ultimate goal of delivering the performance, cost and power of an entire AR / VR system Etc. - Zhu Ning, CTO of Analogix
Arm Complete Display Solution Today we released the first complete Arm display solution to support all the latest usage scenarios running on the next generation of high end devices.While these products are very functional, Sample products to work together to achieve the performance point we discussed before in order to achieve maximum benefits.The new architecture, coupled with the pre-optimized software stack and integrated CoreLink MMU-600 and Assertive Display 5 technology, the future of the display on the device will Will shine.