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.
Bloomberg's Mark Gurman has high expectations for Apple's first foldable iPhone.
In his Power On newsletter today, he said the foldable iPhone will be "the most significant overhaul in the iPhone's history."
"iPhone 4, iPhone 6 and iPhone X were clearly a big deal, but this is a whole new design," he said.
Like Samsung's Galaxy Z Fold 7, the foldable iPhone will reportedly open up like ...
iOS 26.5 is now available for developers, and while it doesn't include any new Siri capabilities, there are some major changes for the European Union, and smaller tweaks for features available worldwide.
Suggested Places
In the Maps app, there's a new "Suggested Places" feature that recommends locations to visit based on trending places nearby and recent searches. When Apple launches ads in ...
New images of an alleged iPhone 18 Pro prototype and screen protectors have emerged from multiple sources, adding weight to earlier reports that Apple plans to significantly shrink the Dynamic Island later this year.
An X user called @earlyappleleaks recently shared an image purportedly showing a prototype iPhone 18 Pro with a noticeably smaller Dynamic Island. In the picture, the flashlight ...
Apple today introduced an all-new Studio Display XDR monitor with a 27-inch screen, mini-LED backlighting, 5K resolution, peak brightness of 2,000 nits for HDR content, up to a 120Hz refresh rate, Thunderbolt 5, and more.
The new Studio Display XDR replaces Apple's former Pro Display XDR, which has been discontinued. Going forward, there are now two Studio Display models.
Here are the...
Alongside the all-new, higher-end Studio Display XDR, Apple has updated the regular version of the Studio Display with some new features.
Here is what is new for the lower-end Studio Display, according to Apple:Two Thunderbolt 5 ports (up to 120Gb/s), with one upstream port (provides 96W pass-through charging) and one downstream port for connecting accessories or daisy-chaining up to four...
The new Studio Display XDR features a mini-LED display with up to a 120Hz refresh rate, but you'll need a newer Mac to get support for the full 120Hz.
According to Apple, Macs that have an M1, M1 Pro, M1 Max, M1 Ultra, M2, or M3 will only support the Studio Display XDR at 60Hz. All other features remain available.
For the full 120Hz refresh rate, you'll need to have a Mac with one of the...
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.
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.
Nonsense. Here, let me try:
$ cat > sonnet.txt Shall I compare thee to a summer's day? Thou art more lovely and more temperate. Rough winds do shake the darling buds of May, And summer's lease hath all too short a date. ^D $ zip sonnet.zip sonnet.txt $ rm sonnet.txt $ unzip sonnet.zip $ cat sonnet.txt
Hey, you scrubbed up OK!
$
Well, you learn something everyday.
Did you hear the one about a well-known photocopier manufacturer ('http://www.theregister.co.uk/2013/08/06/xerox_copier_flaw_means_dodgy_numbers_and_dangerous_designs/') who used over-zealous lossy compression on their devices until people found that it was changing the numbers in the small print on spreadsheets?
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.
