Must see before purchase: Five issues that smart projector can't ignore
I believe many 80,90 have this kind of memory: summer evening evening open space, a white screen cloth rises, a few meters in front of the curtain placed a machine with two iron rings, it emits the contents of the light beam Let us be amazed and intoxicated. This is the old-fashioned film screening. With the development of the times and the advancement of technology, projectors that are smaller, more powerful, and even more intelligent have begun to enter the work and life of ordinary people and become the assistants of office entertainment.
Thus, in recent years, domestic netizens have seen more and more smart projectors for the consumer market. Although the projector is "highly high" in terms of price, compared with smart TVs promoted by manufacturers such as LeTV and Xiaomi, the price/performance ratio does not occupy the slightest advantage. But it still has the advantage that the latter can't match: it can give consumers a near-theater shock experience. Therefore, behind the smart projection there are many high-end users who seek to enjoy the experience. What needs to be pointed out is that smart TVs appear to be more prosperous than the more mature smartphone market, and they are still in the "Warring States Period" of "big fights." Unclear consumers are often bewildered by the manufacturers' rhetorical and scary parameters when purchasing products, and finally “enter the pitâ€.
In view of this, HD Vantage has combed on the key parameters of smart projection, trying to write a "smart projection purchase basic rules" to guide the general consumers want to buy. The article will not be very complicated and has a simple context. It is like buying a car to look at "chassis, engine and gearbox". It is not wrong for us to buy smart projectors to follow this path.
First, projection
Just like smart phones, if even the most basic "work" of their own work cannot be done, then what is the "intelligence" based on this? Similarly, the same applies to smart projection. First of all, we must pay attention to the nature of its work "projection." After doing a basic job, we talk about "smart" again.
Brightness and color
From the LCD technology of the 1970s, to the more contrasting DLP technology of the end of the century. 3LCD technology (developed from LCD technology) and DLP technology have become two of the most commonly used technologies in the mainstream projector market in the 21st century. Until the advent of LED projection technology in recent years.
At present, smart projectors generally adopt more advantageous color sequence (sequence) LED technology (RGB-LED), that is, time-sequentially illuminating the display device with red, green, and blue LED light sources, and utilizing the characteristics of the persistence of human vision to realize the time. Color mixing to achieve the principle of color imaging. This mixed light is more than 3 times wider than the color gamut of traditional white light, and the color purity of RGB LED light is very high. The projected image is bright and vivid, and the color range is as high as 120% NTSC or more.
More and more ordinary users are beginning to realize the importance of brightness, but manufacturers often shirk their posts when they advertise. For example, when a brand advertises a product, it claims that "brightness is as high as 3750 lumens." One of the more useful items is actually ANSI brightness (optimized brightness). That is, the brightness performance measured under normal screen display conditions is the standard to consider. Many brands in the market are considering commercial peaks, but the peak value is actually marked, and the ANSI lumen value is about 4-5 times lower than the peak value. Currently, there are a few 1080P micro projectors on the market that have an ANSI brightness of around 900 ANSI, but many still maintain 500 ANSI up and down. The low brightness means that the user experience is limited. The lower the ANSI lumens are, the darker the viewing environment is when using the projector. Therefore, the daytime window can only be watched at night. This is a common complaint among domestic users.
Service life
Readers may wish to go to Jingdong Mall and look at the top smart projectors in domestic sales. Almost every one of them claims that their own projectors can reach XXX hours of life, how to niubility, and cool. In fact, the advantage of LED light source is stability, long life is one of the benefits. Compared to traditional projectors, LED light projectors have the advantage of not requiring frequent bulb replacements, and their lamp life is between 10,000 and 20,000 hours or even longer.
However, it should be pointed out that the brightness of the LED light source will still be attenuated at high temperatures, but it is not as noticeable as the attenuation of the brightness of the conventional projector. As the saying goes, "Whether or not Xiao Cheng will fail", although traditional projectors have rapid brightness decay, they allow users to purchase light bulbs to replace them. However, smart projectors are not easy to change because the brightness of LED light sources does not attenuate.
In addition, the projector is not a product that only looks at the light source. It is impossible to reach the realm of "One person is not hungry to feed the family". It is also necessary to consider peripheral components such as optical machines, chips, and driving circuits. An LED light source can be really powerful for five years, but the components that turn around it can be less "longevity."
interface
In the current smart projection market, the “light and thin†style has become increasingly popular. Vendors have also started to advertise their efforts to show how their own products are portable, but this is really at the expense of interfaces. Prior to this, the smart phone industry has caused a "light and thin" style, and the smaller and smaller cell phone batteries make consumers complain.
The compact and intelligent projector interface is simplified, making many brand products only with HDMI interface and USB interface, as commonly used VGA interface is often cut off. Some brand flagship products, may also join RJ-5 network port and S / PDIF interface, a little low-end (of course, the price is not cheap) is an HDMI interface, a USB2.0, plus power interface and headphone jack . Of course, it's not difficult to understand why vendors do this. One is limited by the size of the product and cannot be added to the larger VGA port; the other is the cost reason. After all, there is only one interface to save a sum of money.
In addition, in fact, the intelligent pico projector has certain problems for the optimization of the interface. The same white screen, output through the HDMI interface and smart system through the U disk to read the picture, the output brightness is different. The brightness of the white screen output from the HDMI interface is low. Therefore, for a user who wants to use a smart pico projector for business work, the brightness of the picture will be discounted.
Second, intelligence
Under the wave of the Internet, the word "smart", a vocabulary that was supposed to be rigorous and technological, was gradually being used up. Manufacturers scramble to publicize how smart their own products are, as if not publicizing embarrassment to greet people. But their products are actually just a mobile phone APP. How can it be smart?
So smart projection is true intelligence or empty gimmick?
System intelligence
If only on the system, smart projection is veritable. The current mainstream smart projections on the market are all based on the depth customization of the Android system. The UI interface adopts large color blocks according to the user's habits. At the same time, the operation logic is intuitive and simple, and with the built-in remote controller with rich sensors, it can realize functions such as wireless Internet access, web browsing, online video playback, and game play, allowing users to have a good experience. Before this, Win 7 was also applied to the projection, but it was eventually abandoned.
But only the UI is not enough. Content is the most important thing. In general, regular brands will choose to cooperate with sites with many sources, such as Mango TV and iQiyi, and will also receive VIP membership cards to ensure the provision of quality and rich content. Some irregular forces will choose to incorporate certain types of aggregation software. Although they have broken through some restrictions, they cannot guarantee quality and clarity.
Projection function intelligent
In the daily use of the projector, the position of the projector should be at right angles to the projection screen as much as possible to ensure the projection effect. If the two cannot be guaranteed to be perpendicular, the screen will be trapezoidal. In this case, the projector needs to have a "keystone correction" function to correct the trapezoid and ensure that the screen is a standard rectangle. Automatic trapezoidal correction Projector can adjust its own height in the vertical direction. The trapezoidal shape produced by the projector can be trapezoidal corrected in the vertical direction by the projector, which can make the picture rectangle, so as to solve the trapezoidal distortion problem very well. The practicality is very high. Strong.
The smart projector application scene is more abundant than the traditional projector, living room, bedroom and office are all its useless areas, and different application scenarios will bring different projection distances, so the focus distance needs to be adjusted. At this time, smart projection is required to have an auto focus function: When the user adjusts the position of the projector and the screen during use, the auto focus can sense the distance between the lens and the wall to complete the autofocus function, and perform real-time adjustment according to the change of the distance. Focal length adjustment, this is a powerful peace of mind and humane intelligence.
TOPNOTCH INTERNATIONAL GROUP LIMITED , https://www.mic11.com