The Video Electronics Standards Association yesterday formally announced its new DisplayPort 1.4 standard, setting the stage for improved video quality and color for external display connections over both DisplayPort and USB-C connectors.
Rather than an increase in actual bandwidth, the improvements in DisplayPort 1.4 come due to improved compression, taking advantage of VESA's new Display Stream Compression 1.2 standard to support High Dynamic Range (HDR) video up to either 8K resolution at 60 Hz or 4K resolution at 120 Hz.
DSC version 1.2 transport enables up to 3:1 compression ratio and has been deemed, through VESA membership testing, to be visually lossless. Together with other new capabilities, this makes the latest version of DP ideally suited for implementation in high-end electronic products demanding premier sound and image quality.
In addition to video-related improvements, DisplayPort 1.4 also expands audio capabilities with support for 32 channels, 1536kHz sample rates, and broader support for "all known" audio formats.
The approval of DisplayPort 1.4 comes even though consumers are still awaiting the arrival of devices supporting the previous DisplayPort 1.3 standard. Intel had been expected to support DisplayPort 1.3 in its current Skylake generation of chips, but the company instead opted to offer dual DisplayPort 1.2 support. As we detailed earlier this year, the lack of DisplayPort 1.3 support in Skylake could lead Apple to hold off on releasing a new 5K Thunderbolt Display until next year when chips supporting the standard become available.
Intel hasn't laid out its DisplayPort support plans beyond Skylake, so it's unknown whether the company will first move to DisplayPort 1.3 or if it can jump straight to the new DisplayPort 1.4 standard. Either way, we're unlikely to see Macs supporting DisplayPort 1.4 until 2017 at the earliest.
Wednesday April 23, 2025 8:31 am PDT by Joe Rossignol
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices.
Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025:
Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
Thursday April 24, 2025 2:14 am PDT by Tim Hardwick
If you missed the video showing dummy models of Apple's all-new super thin iPhone 17 Air that's expected later this year, Sonny Dickson this morning shared some further images of the device in close alignment with the other dummy models in the iPhone 17 lineup, indicating just how thin it is likely to be in comparison.
The iPhone 17 Air is expected to be around 5.5mm thick – with a thicker ...
Thursday April 24, 2025 8:24 am PDT by Joe Rossignol
While the so-called "iPhone 17 Air" is not expected to launch until September, there are already plenty of rumors about the ultra-thin device.
Overall, the iPhone 17 Air sounds like a mixed bag. While the device is expected to have an impressively thin and light design, rumors indicate it will have some compromises compared to iPhone 17 Pro models, including only a single rear camera, a...
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
Tuesday April 22, 2025 10:22 am PDT by Juli Clover
Apple plans to release an all-new super thin iPhone this year, debuting it alongside the iPhone 17, iPhone 17 Pro, and iPhone 17 Pro Max. We've seen pictures of dummy models, cases, and renders with the design, but Lewis Hilsenteger of Unbox Therapy today showed off newer dummy models that give us a better idea of just how thin the "iPhone 17 Air" will be.
The iPhone 17 Air is expected to be ...
Thursday April 24, 2025 10:15 am PDT by Joe Rossignol
Starting today, April 24, Apple Stores around the world are giving away a special pin for free to customers who request one, while supplies last.
Photo Credit: Filip Chudzinski
The enamel pin's design is inspired by the Global Close Your Rings Day award in the Activity app, which Apple Watch users can receive by closing all three Activity rings today. The limited-edition pin is the physical...
Apple's $570 million fine from the EU has triggered a sharp rebuke from the White House, which called the fine a form of economic extortion, Reuters reports.
The fine was announced on Wednesday by the European Commission, following a formal investigation into Apple's compliance with the bloc's Digital Markets Act (DMA), a landmark piece of legislation aimed at curbing the market dominance of ...
Thursday April 24, 2025 12:09 pm PDT by Joe Rossignol
When an iPad running iPadOS 19 is connected to a Magic Keyboard, a macOS-like menu bar will appear on the screen, according to the leaker Majin Bu.
This change would further blur the lines between the iPad and the Mac. Bloomberg's Mark Gurman previously claimed that iPadOS 19 will be "more like macOS," with unspecified improvements to productivity, multitasking, and app window management,...
Compression is never lossless. It may be imperceptible to the ear or eye, but it is still compressed at some level.
Excuse me, but this is complete nonsense. Indeed there is true lossless compression (though I cannot say for sure that "lossless" in this article truly means lossless). Just think about zip compression, you compress a text file by zipping it and get the exact same file with all data back when unzipping it. That's exactly what happens also with audio or video, when talking about lossless compression, though algorithms may differ.
Jesus. Never in my life would I have believed this is how people actually think. Dude, I don't want to mock you but you are so wrong, so UTTERLY ignorant about this subject, it's not funny.
Let me simply point out that LOSSLESS compression is a well-defined mathematical field, it is built upon probability theory, like all CS it consists of theorems and algorithms, and it applies to all random processes (think "data streams") regardless of whether they are text, video, sensor data, or anything else. It has NOTHING to do with "rephrasing" and use of "shorter words". Your comment is the sort of thing I'd expect EE's to send each other on April Fools' day as a joke.
Compression is never lossless. It may be imperceptible to the ear or eye, but it is still compressed at some level.
And compressing a file in the form of a ZIP 'archive' is also never lossless. If you zip a text file, the text will be shortened by slight rephrasing and the use of shorter words. This may be imperceptible to the reader but it is still compressed at some level.
Compression is never lossless. It may be imperceptible to the ear or eye, but it is still compressed at some level.
No - there are plenty of lossless compression algorithms. E.g. LZW compression used by GIF, some types of TIFF and ".zip" files (using lossy compression on executables and data files is not a good idea), Apple Lossless ('https://en.wikipedia.org/wiki/Apple_Lossless') audio, FLAC ('https://en.wikipedia.org/wiki/FLAC') audio, .png files...
Lossless compression works by finding a more efficient way to pack the data. E.g. replacing frequently occurring patterns with short codes or 'run length encoding' (e.g. if there is a row of 1000 white pixels just send 'white' and '1000'). Morse code is another example (frequently occurring letters are given the shortest code rather than ASCII which uses 8 bits for every single character - Huffman encoding is the algorithmic equivalent).
With lossless compression, you get back exactly what you put in. You don't get the sort of 100x compression you see with lossy compression, but 2-3x is feasible.
However, "visually lossless" is either a redundancy (if its lossless, of course there's no visual difference) or weasel words.
Intel hasn't laid out its DisplayPort support plans beyond Skylake, so it's unknown whether the company will first move to DisplayPort 1.3 or if it can jump straight to the new DisplayPort 1.4 standard. Either way, we're unlikely to see Macs supporting DisplayPort 1.4 until 2017 at the earliest.
Knowing Intel, we might see 1.4 sometime around 2025. :rolleyes:
And compressing a file in the form of a ZIP 'archive' is also never lossless. If you zip a text file, the text will be shortened by slight rephrasing and the use of shorter words. This may be imperceptible to the reader but it is still compressed at some level.
Jesus. Never in my life would I have believed this is how people actually think. Dude, I don't want to mock you but you are so wrong, so UTTERLY ignorant about this subject, it's not funny.
Let me simply point out that LOSSLESS compression is a well-defined mathematical field, it is built upon probability theory, like all CS it consists of theorems and algorithms, and it applies to all random processes (think "data streams") regardless of whether they are text, video, sensor data, or anything else. It has NOTHING to do with "rephrasing" and use of "shorter words". Your comment is the sort of thing I'd expect EE's to send each other on April Fools' day as a joke.
