According to foreign media reports, for a mature technology that can be traced back to the 1920s, television has never stopped developing, and it has developed the most rapidly in the past decade. From 480i to 720p and the current 1080p, the next generation of 4K UHD TVs will have dazzling picture quality and large screen size. But what is it? What can you do? how to work? The author summarizes the following guide to help users better understand 4K Ultra HD TV. "4K" and "Ultra HD", are they different? No, in fact they are the same. What people see is just two different terms that describe the same technology. The manufacturer just cannot agree on how to call it. Basically, 4K or Ultra HD is 4 times the existing 1080P resolution, which technically supports 4096 x 2160 pixels, or 2160P, although the actual pixel level is lower than this, which is 3840 x 2160. Recently, the Consumer Electronics Association has decided that in order to end confusion and ease of marketing and promotion, UHD will become the official name of a new generation of resolution standards. Unfortunately, it has been too long for people to call 4K making the transition to Ultra HD not smooth. Some manufacturers, such as Sony, insist on calling it 4K. Do people need 4K? No, the 1080P HD TVs people use now will continue to be used for a long time. And there is currently no plan to stop the commonly used high-definition broadcasting. However, once people sit in front of 4K ultra-high-definition TV, they still can't help but want to upgrade. What are the benefits of 4K? The main benefit is better picture quality. The higher resolution of 4K means that, compared to the 20 million pixels of 1080P, 80 million pixels will be displayed on the screen. If people think that 1080 high-definition TV is already sharp and detailed, 4K can make this feeling further because the pixels are 4 times smaller than before. This is part of the reason why 4K Ultra HD technology is being pushed to larger screens-the impact of extra pixels on the large screen is more obvious. More pixels does not mean better picture quality on the big screen. Higher pixels may make it difficult to see individual pixels when sitting close to the TV. What 4K Ultra HD TVs can I buy now? Sony, LG, Samsung, and Toshiba have all launched 84-inch giant 4K HD TVs (Samsung's 85-inch actually), but they are all expensive-any one is priced from $ 20,000 to $ 40,000. A small number of manufacturers have introduced smaller and cheaper models, but they are still expensive compared to current 1080P TVs. Best Buy has started selling Sony's small 4K ultra-high-definition TVs, which are priced at $ 5,000 for 55 inches and $ 7,000 for 65 inches. More models will follow, and all major TV manufacturers now agree to move to 4K. Since Blu-ray and high-definition multimedia interface (HDMI) issues will be resolved by the end of this year, autumn and holidays are probably the most likely promotion season. Can HDMI handle 4K video? HDMI is the standard AV cable for existing high-definition televisions, but the current 1.4a / b version of HDMI cannot handle 4K video at 30 frames per second. In other words, 4K movies can be played smoothly (because it was shot at 24 frames per second.), But some games or TV shows may have problems. The current game renders up to 60 frames per second, and some programs broadcast on 720P TV are also broadcast at 60 frames per second. People do not yet know what the future rendering technology will be, or whether TV stations will try to broadcast 4K content at 60 frames per second, but if they do, HDMI 1.4a / b will become its bottleneck. Ultimately, 4K UHD TVs need to be equipped with HDMI 2.0-which will be available later this year-or some other wired or wireless cable that can handle greater data throughput. Can 4K UHD TV play standard or high definition content? If so, how effective? Yes, but not all TVs are made the same in this respect. Upgrade low-resolution signals to make them look better on high-resolution screens. For example, standard definition TV resolution is 480i and DVD is 480p. When 720p and 1080p appeared, TV manufacturers increased the operation panel upgrade function and some Blu-ray players. This makes standard-definition TV and DVD signals look better on 720p or 1080p TVs, even though they are not true high-definition signals. The solution for 4K UHD TV is no different, except that the existing HD 720p or 1080p signal is upgraded to 4K. Cheap 4K Ultra HD TVs are impeccable when playing 4K content, but the effect is poor when playing upgraded standard signals or HD signals. The lack of local 4K content makes the consideration of this point crucial. Currently, customers are seeing 1080p HD, 1080i or 720p content on 4K TVs. If the TV does not do a good job in upgrading, the quality of almost all the content seen will be significantly lower than that of 4K. Speaking of local 4K content, where can people get it? There are not many options yet, but the wheels seem to start rolling. Some channels in Europe and South Korea have already started broadcasting 4K signals, and at the same time, the British BBC has planned to broadcast some documentaries at this resolution. When broadcasters seek their own way, the owners and providers of program content are looking for other ways. This year, this will not include Blu-ray discs, because manufacturers and media companies have not yet decided what to do, or the disc will be compatible with existing ones. Blu-ray player. These decisions must be made at least later this year, so 4K Blu-ray discs will not be available until 2014. How about Sony's Mastered in 4K Blu-ray Disc? This Blu-ray disc released just a few weeks ago really confuses consumers. To be precise, this is not a 4K Blu-ray, but a 1080p Blu-ray movie converted by 4K Mastere to work on existing Blu-ray players. Users can play them on 4K UHD TVs on existing players, but this does not mean that you are seeing 4K images. How about 8K? Is 4K about to become obsolete? The resolution of 8K is four times that of 4K and 16 times that of 1080p, reaching 7680 x 4320 pixels or 4320p. Although this may seem difficult to understand, the technology already exists, and the manufacturer can put it into the product in just four years. This raises doubts about the long-term survival of 4K, because it may become a stepping stone to 8K development, just as 720p is quickly replaced by 1080p. NHK, the national radio and television station in Japan, has been working to promote 8K. At the 2012 London Olympics, the BBC filmed a considerable amount of good content in 8K.
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Important factors to consider when choosing a Window 7 Pos System:
Initial setup cost (time and money)
Payment processing costs (e.g., % of sale + charge per transaction)
Other monthly processing fees (e.g., PCI-compliance fee, chargeback fees)
Equipment costs/rental fees
Pos Software fees
PCI compliance (i.e., how you process payments, connect your systems, and manage customers` data securely)
Level of mobility
Ability to accept EMV chip cards
Ability to accept NFC payments like Apple Pay, Android Pay, and contactless cards
POS software features (e.g., invoices, ability to store customer data safely, inventory management, customer loyalty programs, appointment management)
Benefits of using a Window 7 Pos System for credit card processing
While you can take card payments using a standard credit card processor, there are a lot of benefits to using a small business Window 7 Pos System. For starters, every time you take a payment using a Window 7 Pos System, all the data from the sale is tracked and recorded in the system. This is key for inventory management, which a small business Window 7 Pos System helps you keep track of.
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