digital signage raspberry pi open source

Almost all current smart projections use DLP seamless splicing screen projection technology, so how much do you know about this technology? Today I will briefly analyze the working principle and characteristics of this technology. The light source hits the light on the lens to obtain usable parallel light. The parallel light passes through the color wheel to obtain a uniform rectangular spot, which is then processed by DMD, the core component of DLP seamless splicing screen projection technology. Finally, the light is hit on the projection lens and passed The lens gets the projection we need, which is the working principle of DLP seamless splicing screen projection technology. DLP seamless splicing screen display board has extremely fast response time, you can switch independent pixels many times when displaying a frame of image. In addition, the strong reflective surface of the DMD chip can eliminate the obstacles in the light path and allow more light to be projected on the screen, and maximize the use of the projector’s light source to obtain a higher contrast picture. These are DLP seamless splicing screen projections. Advantages of technology. In addition, in terms of size, the DLP seamless splicing screen chip is lighter and smaller, which is one of the reasons why DLP seamless splicing screen projection technology is widely selected for small-size products such as smart projection. In addition, at the end of last year, Texas Instruments also launched a smaller size 1080P chip for smart projection. The compression of the chip size

As a new type of identification product, digital signage has some personalized functions that traditional signs do not have. It is precisely because of these distinctive functions that it can occupy a place in the market, and now digital signage has embarked on The fast lane of rapid development. So, have we found that in different scenarios, the role and function of digital signage are different, and the way of interaction is also different. The root cause of this problem is that user needs are different, so it is necessary to customize functions according to user needs Development, now the problem is coming again. From the current digital signage on the market, what are the common functions of digital signage? Below we expand from three aspects; 1. Queuing for number collection. This function is actually a more traditional function, and it is also a function that we have more contact with. For example, when we go to public places to do business, due to the large number of people, we need to give each user a number, according to the number The order of work is done in order, so that the order is easy to maintain, and the work efficiency is high. To solve this user’s pain point, the function of digital signage self-checking is not suitable. In addition, there are some file-like materials that can also be self-printed through digital signage. In fact, many self-service terminals can be counted as digital signage.   2. Guides and guides. In