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22

2020-05

What Kind Of HDMI Cable Do You Need?

There’s nothing complicated about buying the right HDMI cable. If it’s long enough and not damaged, it should work. HDMI has become the default audio-video cable standard for good reason: It sends the best quality image and sound over a single cable with a moderately small connector. And there are very few things to worry about when buying a cable. There are four different types of HDMI cables, not including those for automobiles. You’ve got Standard, Standard with ethernet, High Speed, and High Speed with ethernet. Cable manufacturers are required to clearly display the type on the cable itself. Standard cables are rated for 720p and 1080i signals. They might be able to handle 1080p, but that’s not guaranteed. You’d definitely want a High Speed cable for 3D. As you can probably guess, the ethernet versions allow for data transmissions. But one thing you don’t have to worry about with cables are the numbered versions of HDMI. For instance, 3D requires HDMI 1.4, and that might be an issue with your receiver—assuming you want to daisy-chain it between your 3D-capable Blu-ray player and 3D HDTV. But it’s not an issue with the cables through which you’ll do the daisy-chaining. In fact, HDMI Licensing, the organization that controls the trademark, doesn’t currently allow manufacturers to put version numbers on their cables. And here’s two other concerns you don’t have to worry about: price and brand names. Cheap, generic HDMI cables provide just as good an image and sound as the high-priced alternatives. In an analog world, cable quality matters; in a digital one, not so much.

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23

2020-05

HDMI 2.0 Vs 1.4: What’s The Difference?

HDMI 2.0 vs 1.4: The basics HDMI cable 2.0 was announced as a standard in late 2013. It got a lot of people confused, wondering if they suddenly needed to throw away their TVs in order to get on this latest tech trend. As far as tech advancements go, HDMI 2.0 is a pretty friendly one. It’s as much a standard of software as hardware, and cables designed for HDMI 1.4 systems will work just fine with new HDMI 2.0 devices. What you need to make sure is that both ends of your entertainment chain – your TV and Blu-ray player, for example – support the standard. It’ll mean they’re geared up for the new standards we’ll dig into shortly. Some previously HDMI cable 1.4 needs nothing more than a firmware update. HDMI 2.0 is a reimagining of the interchange between your bits of home entertainment gear, one that factors in the immense amount of data required to get high-quality audio and video to something like a 4K 3D-capable TV. HDMI 2.0 itself isn’t really about resolution, though, but bandwidth. More bandwidth is what makes all of its new standards possible. HDMI 2.0 systems can transfer data at up to 18Gbps, up from 10.2Gbps in HDMI 1.4. In terms we’re all more likely to get on with, 18Gbps is 2,250MB a second. For a little more context, normal Blu-rays max out at 54Mbps, or 6.75MB per second. The HDMI pipe is wider than a dual carriageway.

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23

2020-05

USB Type-C: Fixing An Age-old Problem

The near-universal frustration over attempts to connect USB devices to computers has been a staple of nerd humor and lampooned in various ways until Intel finally found a way to take the joke quantum. Super-positioned USB USB Type-C promises to solve this problem with a universal connector that’s also capable of twice the theoretical throughput of USB 3.0 and can provide far more power. That’s why Apple is pairing up Type-C and USB 3.1 to eliminate the power connector on the MacBook. It’s a goal we agree with, even if we’re less thrilled with the company’s decision to dump USB ports altogether with that single exception. Google’s approach, in providing two USB-C and two regular USB 3.0 ports, is obviously preferable, even though it adds a bit of bulk to the machine. Apple-MacBook Type-C connectors will be shipped in a variety of passive adapters The spec provides for passive adapters with USB 3.0 / 3.1 on one end and USB Type-C on the other.

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24

2020-05

Software Support Of USB Cable

Windows 10 and Windows 10 Mobile support USB 3.1, USB-C, alternate modes, billboard device class, power delivery and USB Dual-Role support. Windows 8.1 added USB-C and billboard support in an update. Linux has supported USB 3.0 since kernel version 2.6.31 and USB version 3.1 since kernel version 4.6. OS X Yosemite supports USB 3.1, USB-C, alternate modes, and power delivery. FreeBSD released the Extensible Host Controller Interface, supporting USB 3.0, with release 8.2 Android Marshmallow works with USB 3.1 and USB-C. Chrome OS supports USB 3.1 and USB-C starting with the Chromebook Pixel 2015 and supports alternate modes, power delivery, and USB Dual-Role support. MacOS High Sierra supports USB 3.1, USB-C, and other form of power delivery and display options.

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29

2020-05

HDMI Cables Have Standards

HDMI 1.4 also has to sub versions: 1.4a and 1.4b. The former allows the cable to work with 3D televisions in 1080p 24Hz, and the latter allows it to also handle 3D 1080p at 120Hz. Neither provides any noticeable improvement if you’re using one with a 2D television. As 3D TVs aren’t especially popular anymore, and there’s not a lot of content available, you don’t really need to think too much about these two—they’ll still work just like a vanilla version 1.4 cable. What does provide an improvement is moving to Version 2.0. With this upgrade, the maximum bandwidth of the cable nearly doubles, from 10Gbps to 18Gbps. This means the cable can theoretically transmit a lot more data—like all the data needed to properly render a wider color gamut or HDR. Unfortunately, you’re still capped at 4K and 60Hz. So if you head into the big box store and they try to sell you on a fancy 4K TV capable of 120Hz, don’t necessarily feel like you need to spend the money. You will not be able to get a 4K 120Hz picture transmitted over HDMI with version 2.0 or earlier. This might be where you point to Version HDMI 2.1, which was announced back in November 2017. It doesn’t just double the bandwidth. At a theoretical max of 48Gbps, it’s almost three times faster than 2.0 and nearly five times faster than 1.4 or earlier. It can actually do 4K and 120Hz and wide color gamut and HDR all at the same time. However, because it was announced in November 2017, there are very, very few TVs with ports that support the standard, or cables made to the standard.

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04

2020-06

Knowing When To Trash A HDMI Cable

How do you know if the HDMI cables you already have are worthless? There typically aren’t any markers on the cable you can trust to accurately tell you. So if you don’t want to chuck all the cables you currently own and go buy all new ones, you’ll need to check a few things. First, look at the manual for you TV and see what version of HDMI each port supports. Many TVs, especially cheaper ones, might only have Version 2.0 or higher on one port! That means there’s only one port that can handle 4K and HDR and all the stuff the TV bragged about having when you bought it. So locate a Version 2.0 port on your TV and plug in a device that supports 4K and HDR. Now, confirm that HDR is enabled on the TV. You’ll need to check you manual as every TV confirms HDR differently. If HDR is enabled then you’re probably good to go! But if it is enabled and you notice the picture is pixelating or stuttering, then it means the cable can’t handle all the data and should be replaced. This is especially common with cables over 6 feet that are attempting to transmit 4K 60Hz picture with wide color gamut and HDR. For that reason, it’s rarely a good idea to buy a cable that is longer than 6 feet. As good certified cables can be found at places like Amazon and Monoprice for under $10, there’s really no reason not to double-check and replace your cables if needed. You spent all that money on a good picture, so why waste it because of a cheap cable?

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07

2020-06

IPhone Missed USB-C? Apple's New Patent: Future Lightning Interface Can Waterproof

Recently, the U.S. Patent and Trademark Office has exposed a new patent application filed by Apple. The patent application can be seen that Apple intends to innovate the lightning cable. According to foreign media reports, Apple filed a new patent on Thursday to show the design of several waterproof Lightning and USB-C connectors. From the perspective of the patent map, the new type of lightning connector focuses on the waterproof function. The Lightning connector features a new trapezoidal design and a rubber gasket design that can be "unfolded" after being inserted into the iPhone or iPad to create a relatively sealed condition that increases the resistance of the liquid to the device. The application describes this way: "A tight seal will be formed between the accessory and the electronic device to prevent liquid intrusion, which will allow the accessory to function properly in a wet, dirty environment."

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13

2020-06

USB-C, USB 3.1 Not Always Hooked Together

The Type-C plug can be used with previous standards of USB, which means manufacturers don’t automatically have to adopt expensive 3.1 hardware if they want to include it in mobile devices. Apple, to be clear, is offering USB 3.1 on the new MacBook, though the company hasn’t disclosed which third party vendor is providing the actual chipset support. The disconnect between USB 3.1’s performance standard and the USB Type-C connector is going to inevitably cause confusion. One reason the shift from USB 2.0 to 3.0 was relatively painless is because coloring both the cables and plugs bright blue made it impossible to mistake one type of port for the other. The upside to decoupling USB 3.1 from USB-C, however, is that companies can deploy the technology on mobile phones and tablets without needing to opt for interfaces that inevitably consume more power. Then again, some might argue that this would be a moot point — the USB controller can be powered down when it isn’t active, and when it is active, the device should be drawing power off the PC or charging port anyway. Heat dissipation could theoretically remain a concern — higher bandwidth inevitably means higher heat, and in devices built to 3-4W specifications, every tenth of a watt matters. The 100W power envelope on USB 3.1 will actually be of more practical value than the 10Gbps bandwidth capability. While it’s true that USB 3.1 will give external SSD enclosures more room to stretch their legs, the existing standard still allows conventional mechanical drives to run at full speed, while SSDs can hit about 80% of peak performance for desktop workloads. It might not be quite as good, but it’s a far cry from the days when using USB 2.0 for an external hard drive was achingly slow compared to SATA. Signal overhead is also expected to drop significantly, thanks to a switch to a 128-bit and 132-bit encoding scheme, similar to that used in PCI-Express 3.0.

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13

2020-06

USB Type-C Adds HDMI

Future Trends USB Type-C, the latest revision of the popular standard, is becoming the standard for high-speed data communication in consumer devices such as laptops and smartphones. Taking advantage of USB’s Alternate Mode capability, HDMI is the latest high-speed data standard to issue a specification defining its use in a USB Type-C environment. Designers can expect to see other popular video standards join DisplayPort, Thunderbolt, MHL, and HDMI, in jumping on the Alternate Mode bandwagon. Since HDMI is such a popular standard, expect to see HDMI-specific Alternate Mode chipsets make their appearance soon.

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13

2020-06

What Does USBPD Win?

Fast charging standards are not uniform, and the incompatibility of standards is the pain point in the fast charge field. The USB organization introduced USBPD to solve this problem. Strong compatibility PD2.0 supports fixed-block charging, PD3.0 supports PPS charging (low-voltage fast charging mode is also called direct charging mode), so that the different fast charging standards on the market are unified in the USBPD category, as long as the USBPD3.0 charger is met. Both are compatible with the terminal. Whether it is a high-pressure fast charge based on Qualcomm or a low-voltage direct charge represented by OPPO, it can be covered by USBPD3.0. Charging is safer and more flexible USBPD3.0 supports PPS mode, which has two advantages compared to the current more common high-pressure fast charge: - During high-power charging, the battery temperature will not increase significantly and charging is safer; - USBPD adopts a special CC line for communication to communicate through data packets. It is more reliable and flexible to determine the state of charge compared to high-voltage fast detection by detecting D+/D-level changes.

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