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 October 23, 2024 9:38 am PDT by Joe Rossignol
Apple suppliers will begin mass production of the fourth-generation iPhone SE in December, supply chain analyst Ming-Chi Kuo said today in a blog post.
The fourth-generation iPhone SE is expected to have a similar design as the base iPhone 14, with rumored features including a 6.1-inch OLED display, Face ID, a newer A-series chip, a USB-C port, a single 48-megapixel rear camera, 8GB of RAM...
Tuesday October 22, 2024 11:39 am PDT by Juli Clover
Apple today released a new firmware update for the original AirPods Pro, the AirPods 2, the AirPods 3, and the Lightning version of the AirPods Max headphones. The new firmware is version 6F21, up from the prior 6A326 firmware that these devices were previously running.
There is no word on what's included in the firmware, but given that these are all older models, it is likely that the new...
Wednesday October 23, 2024 6:55 am PDT by Tim Hardwick
Apple's Mac mini has long been a powerhouse in a compact form, offering impressive performance in a small package. With rumors swirling about a completely overhauled new model that is likely just days away from being announced, anticipation is building for what Apple has in store.
From enhanced connectivity to major hardware upgrades, the upcoming Mac mini promises to bring significant...
Apple has abruptly reduced production of the Vision Pro headset and could stop making the current version of the device completely by the end of 2024, The Information reports.
Citing multiple people "directly involved" in making components for the headset, the report says that the scaling back of production began in the early summer. This indicates that Apple now has a sufficient number of...
Wednesday October 23, 2024 1:41 pm PDT by Joe Rossignol
In select U.S. states, residents can add their driver's license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps.
Below, we outline which U.S. states offer the feature, and additional states that have committed to rolling it out in the feature in...
Monday October 21, 2024 1:44 am PDT by Tim Hardwick
Apple is expected to release iOS 18.1 on Monday, October 28, bringing the first set of Apple Intelligence features to iPhone 15 Pro and iPhone 16 models. This update marks the first significant step forward in Apple's AI integration, offering a new Siri contextually-aware experience and a range of additional capabilities powered by on-device machine learning and large language models. There are a ...
Thursday October 24, 2024 9:19 am PDT by Juli Clover
Apple's Greg Joswiak today made it clear that Apple plans to reveal new products next week, teasing refreshed Macs. In a social media post, Joswiak said to "Mac your calendars" because there's an exciting week of announcements that start on Monday morning.
With Joswiak's announcement, it appears that there will not be a dedicated October event for Macs this year, with Apple instead...
Thursday October 24, 2024 10:36 am PDT by Joe Rossignol
Apple's marketing chief Greg Joswiak today teased that the company has an "exciting week of announcements" planned next week. Joswiak said to "Mac" your calendars, and the post includes an animated icon for the Finder app on the Mac, so it is clear that at least some of next week's announcements will be related to the Mac.
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Monday October 21, 2024 8:21 am PDT by Joe Rossignol
The Wall Street Journal's Ben Cohen this summer interviewed Apple CEO Tim Cook about the Vision Pro, innovation, Apple Intelligence, and more.
Image Credit: Vanity Fair
Cook admitted that the Vision Pro headset is not a mass-market product due to its high price.
"At $3,500, it's not a mass-market product," said Cook. "Right now, it's an early-adopter product. People who want to have...
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.
The iPhone 16 and iPhone 16 Pro are Apple's newest iPhones and follow last year's iPhone 15 and iPhone 15 Pro, but how different are the two latest models, and what exactly does a "Pro" device offer?
