If the virtual reality (VR) industry in 2015 is only the newly-emerged towering wood, in less than two years, the great extension of VR technology has made it extremely promising. Multi-line penetration in games, live broadcast, entertainment, education, medical, retail and other fields has made VR the hottest innovation technology industry. Industry giants in the global market have entered the market, and the industry explosion is just around the corner. According to the latest data released by the Speedway Research Institute, the market size of China's VR industry in 2016 was 5.66 billion yuan, a growth rate of 268.3% compared with the previous year, and it showed a trend of increasing year by year. It is expected that the virtual reality industry will be 2020. The market size will reach 55.63 billion yuan, which is double the growth in 2016, and the market potential is evident.
Figure 1. Speedway Research Institute announces China's virtual reality (VR) industry market size and forecast data
However, "the ideal is very full, the reality is very skinny", the lack of picture clarity due to lower resolution, the dizziness caused by the lower refresh rate, and the maturity of many VR products for mobile phones, PCs and software compatibility. The problem of not being high enough and the product experience is not good enough has always been a dilemma that hinders the outbreak of the VR industry. At the 6th EEVIA China ICT Media Forum and 2017 Industry and Technology Outlook Seminar, which just ended on January 17, 2017, Mr. Hu Weining, Product Manager of Analogix, Silicon Valley, was using the DisplayPort over USB-C high-speed interface. The theme of VR products and new applications in line material design, for the senior media and nearly 100 industry engineers and developers present in the field, explained the innovative application of USB type-c in the VR industry and the number of Silicon Valley How to solve the above technical problems by how to “prescribe the right medicineâ€.
Figure 2. Silicon Valley Digital Model (Analogix) Product Manager Mr. Hu Weining Forum Presentation
Double-eye 4K+120Hz refresh rate, ANX7530 boosts USB type-c to become a serious application in the VR industryAt the forum, Manager Hu introduced the SlimPort® VR chip ANX7530, which was recently “stunning†CES 2017. It is reported that this is a new product that was picked up when it was released. As the first DisplayPortTM to Quad MIPI-DSI display controller, the ANX7530 supports up to 120 frames per second (FPS) refresh rate and is primarily used in VR and AR head mounted displays (HMD).
Figure 3. Silicon Valley digital model's latest "core" product - VR / AR head-mounted display controller ANX7530
As shown in the figure above, the smartphone on the left has a full-featured USB type-c. After passing the USB cable, the ANX7530 converts the DP protocol into a MIPI signal that the VR screen can recognize and supports each. The eye receives 8 MIPI channels (16 channels in total), and then supports the left and right screens of the VR helmet through two MIPI interfaces (left and right screens). The ANX7530 can support up to 2K & TImes in one eye; 2K resolution, 4K in both eyes. Great for common VR screen resolutions.
More detailed performance metrics for the ANX7530 are as follows:
l DisplayPort 1.4 input, supporting link frequencies up to 6.75Gbps;
l HDCP 2.2 and 1.4 high-bandwidth digital content protection support to ensure secure distribution of video content;
l Its DisplayPort input adaptive equalization can achieve the best-in-class signal recovery required for interconnected VR HMD applications;
l MIPI-DSI 1.2 output, supporting link frequencies up to 1.5Gbps, receiving 4 or 8 channels per eye.
Binocular 4K resolution combined with 120Hz refresh rate, the launch of ANX7530 can be said to be the gospel of many VR equipment manufacturers, it is no wonder that from Las Vegas all the way to the mainland market. It is reported that ANX7530 is extremely hot at present, mobile phone manufacturers at home and abroad and major VR helmet manufacturers are also extremely interested, and the supply schedule of Silicon Valley digital model is very demanding.
Since the ANX7530 does not have CC (Logical Sense and Control) and PD (Power Delivery) functions, it needs to be used in conjunction with the ANX7402 chip with a USB-C port controller and PD. Therefore, this is currently a two-chip solution. Program.
In addition to the ANX7530, Manager Hu introduced another chip at the scene – the AX7440 with integrated 10 Gbps retimer (Re-TImer) and USB-C switch for DisplayPort over USB Type-C port. Attenuation of the signal when the cable distance is long. As shown below, the left picture shows the actual signal without the ANX7440, and the right picture shows the actual eye pattern after the ANX7440. Manager Hu even joked at the scene, "There is no harm without comparison." In the future, simply add ANX7440 to the wire and you can support the VR helmet with no longer cable length. This is for PC VR (connecting VR device with PC) The form) is more prominent.
Figure 4. Comparison of the eye diagrams of the Silicon Valley digital-analog ANX7440 (the left side is not through the ANX7440, the right side is opposite)
Standardization is the cornerstone of ecological construction, USB type-c has gradually become a standard VRCurrently, VR application devices mainly present two mainstream forms, one is PC VR, that is, a PC is connected to a VR device, such as an Oculus Rift; the other is a smart phone VR, that is, a smart phone is connected to a VR device, such as Samsung Gear. Unlike the PC-VR format, the portability of smartphones connected to VR devices is a significant advantage, and the biggest advantage of this solution is that smartphones have become the standard for everyone, and the advantages of low cost are close at hand. The USB Type-C, a multi-function interface that carries video output, power, and data transfer, makes this even easier, and Silicon Valley digital models are more focused on VR applications that connect to mobile phones.
Even with the form of PC VR, the USB Type-C interface can also be "subtracted", which is different from connecting HDMI and USB with two cables. USB Type-C "wins first line".
In fact, not only VR, USB Type-C is a big ecology, its emergence has changed the connection in many fields, flat and thin notebooks are the earliest applications of USB Type-C, with the release of a new generation in early 2015 The Macbook, the USB Type-C term, is well known. Apple seems to have pushed the USB Type-C to the "altar". In the past two years, the USB Type-C has been blushing at an incredible rate.
Smartphones are the main market and growth driver of USB Type-C. The high-end flagship models of mainstream smartphone brands for 16 years, such as Huawei P9 and Glory V8, Samsung Galaxy Note 7, Xiaomi 5, LeTV Max, LG G5, Meizu, and HTC 10 are all equipped with USB Type-C, and the high-level to low-end penetration is the development path of USB Type-C in smart phones. At present, the newly released mainstream flagship models on the market have started to use the USB Type-C interface.
Next, because USB Type-C integrates high-speed data, fast charging, audio and video integration, it is most suitable for VR/AR equipment VR/AR requirements for HD, large bandwidth, low latency and human-computer interaction. Therefore, USB Type-C also It will be the ultimate solution for connecting VR/AR devices to PCs and mobile phones. In the future, USB Type-C will become an important interface choice in digital headsets, flat-panel TVs, automobiles and Internet of Things terminals.
Manager Hu believes that the rapid development of USB Type-C is entirely due to its standardization. Standardization is the cornerstone of the USB Type-C ecosystem. In the future, VR devices and smartphones from different vendors can be interconnected, and this is standardized. Superiority. There are many forms of technology for life, but convenience is always at the core. It is believed that 2017 will become a high-profile year for USB Type-C applications.
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