With the rapid rise of Internet TV, many users are interested in smart TV products that can install and use software. In these smart TV products, most products are equipped with Android systems, so users enjoy the convenience of Android while also having May be plagued by problems from Android.
Recently, foreign media reported such a thing: A foreign user, Darren Cauthon, bought an LG TV with Android system in the early years. He had been using it normally but he did not know what software was installed by the family and watched the movie. Suddenly the FBI's warning screen popped up, prompting infringement of the copyrighted content and requiring payment of $500; and since this unit was not a touch screen, it could not be operated with a manipulator, and the entire television became a "mega slab".
It is understood that the FBI will not warn consumers in this way, so it can basically confirm that this is a malicious ransomware. The reply from LG Customer Service is that since the TV has passed the warranty period, it can only pay 340 US dollars to pay for repairs. At present, this Cauthon can only wait for the help of good friends or the warning is automatically eliminated.
Some industry experts have warned that there are certain loopholes or bugs in the Android system. Therefore, users of Android phones and Android TVs must not install software indiscriminately. Instead, they must download the security version of the APP software from the regular channels and carefully install third-party apps. Try to avoid the risks from Android.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
Fresnel Lens
The Fresnel lens looks like a piece of glass with numerous concentric circles (ie Fresnel zone), but it can achieve the effect of a convex lens. If the projected light source is parallel light, the brightness of all parts of the image can be kept consistent after converging and projecting. .
Fresnel lens is a kind of optical element with a wide range of applications. Its design and manufacturing design covers many technical fields, including optical engineering, polymer material engineering, CNC machining, projection display, concentrating energy, aviation and navigation, science and technology. Research, infrared detection, lighting optics, smart home, etc.
Many devices that contain Fresnel lenses allow the lamp to move back and forth at the focal point to enlarge or reduce the size of the beam. It is very suitable for use on lens projectors, rear-projection TVs, slide projectors, and collimators, not only because it passes through it The brightness of the light is higher than that of the ordinary lens, and the brightness of the whole beam of light passing through it is relatively consistent in all parts.
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Bohr Optics Co.,Ltd , https://www.bohr-optics.com
