Nowadays, a lot of news about VR has always attracted everyone's attention. Many digital people are mad about VR. There are research head-mounted devices, VR heads, VR glasses that we know, and then VR. One machine and VR helmet. So what is the difference between the three?
VR machine
The VR all-in-one is a VR head display (virtual reality head-mounted display device) with an independent processor. It has the functions of independent operation, input and output. The function is not as powerful as the external VR head, but there is no connection and the degree of freedom is higher.
VR helmet
Virtual reality helmet, VR head display (virtual reality head-mounted display device). In the early days, there were also VR glasses and VR helmets. VR head display is a kind of head-mounted display that closes the person's visual and auditory sense to the outside world and guides the user to create a feeling in the virtual environment. The head-mounted display is the earliest virtual reality display. The display principle is that the left and right eye screens respectively display the images of the left and right eyes, and the human eye obtains such a difference information and generates a stereoscopic effect in the mind.
VR glasses
That is VR head display, virtual reality head-mounted display device. Since there is no concept of head display in the early stage, VR glasses, VR eye masks, VR helmets and the like are not known according to the appearance. The VR head display uses a head-mounted display device to close the person's visual and auditory sense to the outside world and guide the user to create a feeling in the virtual environment. The display principle is that the left and right eye screens respectively display the images of the left and right eyes, and the human eye obtains such a difference information and generates a stereoscopic effect in the mind.
The difference between VR machine, VR helmet and VR glasses
VR glasses case VR machine is different · two products, VR machine can put high-end mobile phone into a head-mounted device, the space becomes bigger, no longer worry about heat dissipation, and the price is particularly fair The experience is very good. Moreover, the experience of the VR machine is much higher than that of the VR glasses. First of all, the clarity should be much clearer, because the VR machine is equipped with an Android system, so there is no need to put the phone in, so its weight is also better than VR. The glasses are much lighter, and the VR all-in-one can switch 2D/3D freely when watching movies.
VR all-in-one does not require a mobile phone or a computer connection. As long as it is connected via WIFI and Bluetooth, you can watch VR movies, play VR games and experience various 360° panoramic videos at any time. You can enjoy a better mobile VR experience, so they There will be disparity in prices, but the VR machine is indeed the arrival of a new era.
Hardware, price difference: The composition of VR glasses mainly relies on the lens as the technical core. With the external device of the mobile phone, the user's eyes can be visually experienced in a black enclosed space. The VR helmet hardware constitutes the VR helmet, which is a tool that does not require the peripheral of the mobile phone. There are many components, such as sensors, Bluetooth, wireless signals and other hardware. Of course, because the former is simple in hardware configuration (generally only one outer casing and one headband and two convex lenses), VR helmets (generally more than a thousand yuan) are generally much higher in price than VR glasses (less than cheap) 10 yuan).
The visual range is different: As far as VR glasses are concerned, the size of the screen when the VR glasses are watching the video is determined by the size of the mobile phone. In addition, the visual effect of the feedback is that there are black borders on the upper and lower sides, which greatly reduces the experience. Compared with VR helmets, wearing helmets has no dead ends in the visible range of the eyes, and the angle of view is between 86-120° depending on the helmet products produced by different manufacturers. The VR glasses use a manual adjustment of the viewing distance. The helmet is equipped with advanced technology for 54-74mm adaptive line-of-sight adjustment.
Clarity: There is no special comparability in terms of clarity. At present, the maximum resolution of mobile phones is 1920*1080, and the top helmet resolution that has been known so far has reached the level of 1200*1080. So it seems that the average of the eyes is still quite high. But from the actual effect, the helmet is obviously grainy, but the mobile phone does not.
Dizziness: Because the gyroscope directly affects the stun effect of the user watching the movie, if the poor gyroscope is used, the user will feel vomiting. This personal experience is relatively good for the VR helmet.
Having said that, in fact, for mass consumers, the most direct way to distinguish between VR glasses and VR helmets is to see if the device can be loaded with mobile phones!
USB4 specifies tunneling of:
USB 3.2 ("Enhanced Superspeed") Tunneling
DisplayPort 1.4a -based Tunneling
PCI Express (PCIe)-based Tunneling
Main Benefits of USB 4
The new USB 4 standard has three main benefits over prior versions of USB.
40 Gbps Maximum Speed: By using two-lane cables, devices are able to operate at up to 40 Gbps, the same speed as Thunderbolt 3. The data is transmitted in two sets of four bidirectional lanes.
DisplayPort Alt Mode 2.0: USB 4 supports DisplayPort 2.0 over its alternative mode. DisplayPort 2.0 can support 8K resolution at 60 Hz with HDR10 color. DisplayPort 2.0 can use up to 80 Gbps, which is double the amount available to USB data, because it sends all the data in one direction (to the monitor) and can thus use all eight data lanes at once.
Better Resource Allocation for Video, PCIe: In lieu of alternative mode where the other interface takes over the connection, USB 4 devices can use a process called "protocol tunneling" that sends DisplayPort, PCIe and USB packets at the same time while allocating bandwidth accordingly.
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