Tuesday, 6 October 2015

iPhone 6S home button gets too hot to touch, complain some users

It has been barely a fortnight since the Apple iPhone 6S went on sale in some markets across the globe and some have already started facing issues. According to some users, Apple iPhone 6S’s Touch ID button gets very hot, thereby making it unusable.
Many users have complained about the same on Apple forumsA user going by the name JazzieFay wrote this on the forums, “i have had my phone since Friday, and this morning when I woke up the home button was burning hot and the screen is just black. I went to bed with it working just fine last night, plugged it in to charge, and now it won’t work. Nothing else is hot, not even the charging port, just the home button is on fire. I have had the phone unplugged for an hour and the button is still on fire.”
According to International Business Times, freelance designer Jonnie Hallman stated on October 5 on his Twitter account that his iPhone 6S shut down even though 50% of battery was still remaining and the home button became unbearably hot. This despite the fact that the device was in his pocket the entire day.
Another user named Hudmonkey had this solution to the issue, “I had the same problem today. I can’t tell you why it happened, but what fixed my phone was to hold the home button and the power button for about 10 seconds. The apple symbol popped-up and looked like a reboot. I plan to send an email to Apple Support as a follow-up, but hopefully that will get your phone back on for now.”
Apple has however, acknowledged that this was the first hardware related issue with the new iPhones. It has said that a software update would be released to fix some of these issues. It also went on to say that users can also get their hardware replaced in case the problems persisted.

Apple iPhone 6s, iPhone 6s Plus listed on Flipkart, retailer confirms pricing

Although Apple has not officially introduced the brand new iPhones – iPhone 6s, 6s Plus in India, the devices have already been spotted online with e-commerce players such as Flipkart, at exorbitant prices.
The iPhone 6s for the 16GB variant is priced at 64,836, 64GB variant at Rs 74,117 and the 128GB variant at Rs 83,401 respectively and will be available in Gold, Rose Gold, Silver, and Space Grey colour variants. The iPhone 6s Plus for the 16GB variant is priced at Rs 74,117, 64GB variant at Rs 83,401 and the 128GB variant at Rs 88,478 respectively.
However, these devices are not set to pre-order but are in fact, available for purchase. Even though Apple has not unveiled India pricing for the devices, it is expected that the devices will be priced almost the same as listed on Flipkart.
Image: Technology Personalized
In addition, a report by Technology Personalized states that Apple has sent out a circular to the re-sellers with updated pricing of other existing models as well. The iPhone 6 will now start at Rs 52,000, while the iPhone 6 Plus will start at Rs 62,000. iPhone 5s will be the starting model at price of Rs 35,000 for the 16GB.
The iPhone 6s and 6s Plus will rollout on 16 October in India. This will be the fastest iPhone rollout ever for the Indian market, coming less than a month after the latest models became available globally.
According to Ingram Micro India Pvt. Ltd, the iPhone 6s and iPhone 6s Plus will be available beginning 12:01am local time on Friday, October 16 in over 2,500 retail locations across India. The launch event is also said to be held at over 80 cities across India.
A senior executive with a leading mobile retail brand said, “Except for the iPhone 6 16GB, the rest of the numbers are relevant. The iPhone 6 16GB is selling for around Rs 48500. Prices for the new phones are upward. The trend is similar to a commodity, and are fluctuating.”

Tuesday, 4 August 2015

This Computer Worm Could Break Into Your Apple Without You Even Knowing

There's a new type of worm that can break into Apple computers without being detected — and the creators say virtually the only way to get rid of it is to throw your laptop in the garbage.
Known as Thunderstrike 2, the worm was developed by security experts Xeno Kovah and Corey Kallenberg to raise awareness about Apple's security flaws. They say the worm is capable of spreading from one Mac to another, even if the computers don't share a network.
"[The attack is] really hard to detect… it's really hard to get rid of," Kovah told Wired, explaining that the worm embeds itself in a computer's firmware, the software that comes pre-installed and loads the operating system. "It's really hard to protect against something that's running inside the firmware… for most users that's really a throw-your-machine-away kind of situation," he said.
The problem is that Thunderstrike 2 can't be removed with software or traditional anti-malware programs; cleaning a machine requires programming the computer's chip. "Most people and organizations don't have the wherewithal to physically open up their machine and electrically reprogram the chip," Kovah said.
What makes Thunderstrike 2 so insidious is that it can spread between computers that aren't connected on the same network. To spread the worm, an attacker must first undermine the firmware on a Mac by sending malware through a phishing email or link. The malware could be programmed to infect the firmware — known as the Option ROM— of anything that's plugged into the computer, such as an Ethernet adapter. If that adapter were plugged into another computer, the malware would spread. When the second machine is turned on, the worm would spread to its firmware and become undetectable.
Kovah and Kallenberg say the implications of their discovery could have wide-ranging implications.
"Let's say you're running a uranium refining centrifuge plant and you don't have it connected to any networks, but people bring laptops into it and perhaps they share Ethernet adapters or external SSDs to bring data in and out," Kovah said. "Those SSDs have Option ROMs that could potentially carry this sort of infection. Perhaps because it's a secure environment they don't use Wi-Fi, so they have Ethernet adapters. Those adapters also have option ROMs that can carry this malicious firmware."
Kovah and Kallenberg say that the worm was developed to showcase vulnerabilities in Apple devices. They've notified Apple of their discovery, and the company has already fully patched one type of vulnerability and partially patched another, but three still remain unresolved.
This isn't the first time that Kovah and Kallenberg have revealed a gaping hole in computer security. Last year, they test a series of major PCs for a similar vulnerability and found that 80 percent — including brands like Dell, Lenovo, Samsung, and HP — were vulnerable to firmware worms.
"It turns out almost all of the attacks we found on PCs are also applicable to Macs," Kovah explained.
Kovah and Kallenberg plan to unveil their discovery in more detail on August 6 at the Black Hat security conference in Las Vegas. The goal is to push tech companies to take security more seriously.
"Some vendors like Dell and Lenovo have been very active in trying to rapidly remove vulnerabilities from their firmware," Kovah said.
"Most other vendors, including Apple as we are showing here, have not," he added. "We use our research to help raise awareness of firmware attacks, and show customers that they need to hold their vendors accountable for better firmware security."

Monday, 3 August 2015

Govt on porn ban: Did not mean to curtail internet freedom

As reactions to the government’s move to block porn sites rose to a crescendo on Monday, top communications ministry officials said it was merely meant to comply with the Supreme Court’s observations and not to curtail internet freedom.
“We are not a control-freak government and strongly object to the word Talibanisation,” communications minister Ravi Shankar Prasad said. “On the contrary, we are pushing for higher levels of internet use through Digital India.”
The Opposition had raised the T word to liken the restriction on porn sites to the ways of Afghanistan’s oppressive grouping.
According to data from Pornhub, one of the world’s biggest porn sites, India ranks in fifth place for the most daily visitors to the website. The website saw a total of 78.9 billion video views globally in 2014.
Prasad refused to go into the details of the action being taken, but a communications ministry official said an ombudsman could not be ruled out. “The ombudsman can hold discussions with parents’ associations, NGOs, journalists and other stakeholders on the issue,” said the official.
The Supreme Court, slated to take up the matter on August 10, had however issued no direction to block or ban porn sites. On the last date of hearing on July 8, a bench headed by Chief Justice of India HL Dattu had only asked the government to clarify its stand on a petition seeking to ban pornographic websites across India on the ground that they fuel crime against women.
“Such interim orders cannot be passed by this court. Somebody can come to the court and say, ‘Look, I am an adult and how can you stop me from watching it within the four walls of my room? It is a violation of Article 21 (right to personal liberty) of the Constitution.’ Yes, the issue is serious and some steps need to be taken… the Centre has to take a stand... let us see what stand the Centre will take,” Justice Dattu had observed.
Appearing for the Centre, additional solicitor general Pinky Anand had told the court the government was willing to take action against the “offending websites”.
The matter has been pending before the court since 2013. In an affidavit filed in August last year, the department of telecommunications had told the court it had constituted a cyber regulation advisory committee under the Information Technology Act to look into the issue.
Earlier, the Centre had expressed its inability to clamp down on such sites, saying it was technologically impossible.
It could well be."It is extremely easy to circumvent these blocks, using virtual private networks and proxies that anonymise your traffic," said Pranesh Prakash, policy director at the Centre for Internet and Society in Bengaluru.
A cursory Google search on how to unblock porn websites throws up millions of how-to and guides. These make a users’ web traffic anonymous by routing it through foreign servers.
The government can try to keep up with proxies and block them, too. But proxies change every day and there are dozens of functioning proxies to choose from.
But is it legal to circumvent blocks put in place by authorities by using VPNs and proxies? There is no law in India that prohibits viewing pornography, experts say. Section 67 of the Information Technology Act only deals with "publishing obscene information in electronic form".
This has been interpreted as a measure to criminalise the posting of pornographic content online. However, accessing that content privately – such as in one’s home – is not illegal, say experts.

Friday, 31 July 2015

OnePlus 2 invite registrations cross one million mark in mere 72 hours

OnePlus launched the much talked about OnePlus 2 in the world’s first virtual reality launch event on July 27. The Chinese company has promoted over a million people to register for the new device in a mere 72 hours. At the launch event, the company had stated that it sold 1.5 million OnePlus One smartphones since its launch. In comparison, then new phone has already received such a huge number of registrations or an invite to purchase the latest OnePlus 2.
OnePlus will be hosting a pop-up event in New York, San Francisco, London, Paris, Berlin, Milan, New Delhi, Bangalore, and Jakarta on July 31 where fans can experience the new OnePlus 2 smartphone.
Image: OnePlus

The 64GB OnePlus 2 will be available for purchase with an invite in India starting August 11, exclusively on Amazon. The 16GB OnePlus 2 with 3GB LPPDR4 RAM will be available later this year.  The company has also taken out the logo from the front. It sports a 5.5-inch 1080p display. As promised, the smartphone also comes with a fingerprint scanner and USB Type-C port. The fingerprint scanner is faster than the iPhone TouchID and lets you save up to five fingerprints, says OnePlus.
On the camera front, it comes with a 13-megapixel snapper. It also gets a new camera and a new solution that allows you to take 50MP photos and there’s also the slow motion mode. It comes powered by Snapdragon 810 coupled with 4GB of RAM.
It runs OxygenOS, and says it isn’t your pure Android. It comes with some significant changes. It allows you drastically change the look and feel of the device with a single switch. The colour mode will let you select custom accents colours, or even use dark mode. The OnePlus 2 has a 3300mAh battery.
A recent report suggests that after the launch of OnePlus 2, the company plans to offer a price drop for the OnePlus One. In conversation with Business Today, Vikas Agarwal, General Manager, OnePlus-India confirmed that the company will not discontinue any storage variant of the OnePlus One. However, he stated that consumers can expect a price drop for the OnePlus One in the coming days.

Tuesday, 7 July 2015

iPhone 6S to support twice the LTE speeds of iPhone 6

As is Apple’s typically strategy, this year’s iPhone will have the same outward appearance as last year’s model. Recent leaks seem to confirm that. Those leaks do, however, also point to a different logic board internally. One of these improvements should give the iPhone 6s double the LTE speeds compared to the iPhone 6.

According to 9to5Mac and images they were provided, the new iPhone logic board includes a Qualcomm MDM9635M chip. This chip, introduced in 2013, was designed to be backwards compatible with slower networks while still supporting newer LTE options. All of this is in a design that is also supposed to optimize power usage. For iPhone users, this can mean improved battery life, though with the current iPhone 6 battery life, we can also assume Apple will put those savings into powering some other new feature.

In terms of speeds, the chip has a potential download speed of 300 Mbps thanks to LTE Advanced. Upload speeds are no slouch, either, at 50 Mbps. In real world situations, users should expect to see download speeds closer to 225 Mbps. That’s still faster than what users typically would see at home on their wifi. Of course, even in areas where there is no LTE Advanced coverage, users can still get great speeds thanks to support of dual carrier HSUPA and dual band multi-carrier HSPA+.

OnePlus 2 will be priced below $450, Promises CEO Pete Lau

The latest buzz is around OnePlus’ upcoming smartphone – the OnePlus 2. While we’ve been hearing about its build and specs, the newest tidbit is about is pricing.
The company’s CEO Pete Lau has now confirmed on Twitter that the new smartphone won’t cost more than $450. This works out to approximately Rs 28,500.

The device is slated to launch on 27 July and the expected price was touted to be more than $322 that is approximately Rs 20,500. So, this piece of news isn’t really surprising. Many tech enthusiasts are assuming it will be priced at $449. However, this would mean a way higher pricing tag than the One that carried a base price of $299 that translates to roughly Rs 19,000.
It was recently known that the OnePlus 2 may feature a metal build. The company has already confirmed Qualcomm Snapdragon 810 v2.1 SoC, USB Type-C port, and fingerprint sensor. In a recent post, OnePlus also claims that the fingerprint sensor will be better thanApple’s implementation of TouchID.
After a successful launch of the OnePlus One flagship device and an exclusive agreement with Cyanogen, OnePlus is now trying out new and innovative ways of marketing its next flagship. The company has announced that the One Plus 2 would be launched on 27 July via the world’s first VR product launch. At Rs 99, OnePlus Cardboard VR headset is up for grab

Sunday, 5 July 2015

Will LG build the next Google phone, the Nexus 5 (2015)?

Google has just announced a price drop on its Nexus 6 handsets and rumours are flying around that Huawei will be making the next Nexus flagship device. These points hint at an apparent new Nexus device launch. But according to AndroidPIT, LG may be making the next Nexus phone, tentatively called Nexus 5 (2015).

According to the report, the LG Nexus 5 (2015) design will not be based on the LG G4. In fact, LG will work from scratch for the new Nexus design. There were reports that Google is planning to launch two Nexus devices this year.
Considering the LG made Nexus 5 was quite popular in comparison to the Motorola made Nexus 6, it is not surprising that LG has been chosen to make the next Nexus device. Although neither Google nor LG have confirmed the same. Google’s next mobile OS – Android M – is set for an August release date, so it should not be stretch to imagine a phone launch around that time.
According to a report by Android Police, the device manufactured by Huawei will be codenamed Bullhead and will sport a 5.7-inch display, while LG’s device is dubbed Angler and will feature a 5.2-inch display. The Angler is also expected to sport Qualcomm Snapdragon 808 SoC and a 2,700mAh battery. The company’s flagship tablet Nexus 9, will continue to run for another cycle which implies that there will be no new addition to the tablet series, as of now.

Wednesday, 22 April 2015

WhatsApp free voice-calling comes to iOS

Apple iPhone users will now have the option of voice-calling on WhatsApp as well. The feature had already been rolled-out to Android users.
According to the Apple itunes store, the latest iOS version of WhatsApp, version 2.12.1 brings voice-calling to the app. The itunes store description reads, “Call your friends and family using WhatsApp for free, even if they’re in another country. WhatsApp calls use your phone’s Internet connection rather than your cellular plan’s voice minutes.Data charges may apply. Note: WhatsApp Calling is rolling out slowly over the next several weeks.”
While we updated the app, the voice-calling option hasn’t yet gone live for us on the app, so it could take several weeks for the complete roll-out to take place.
The other interesting feature of this update is that WhatsApp is now finally making use of iOS 8’s Extensions, which means that you can now directly share a photo, video, links to WhatsApp from the Camera, Photos app in iOS.
Users can also edit contacts directly from WhatsApp itself. The other feature is the ability to send multiple videos and to crop and rotate the videos before sharing them. We also saw that you can add a caption to a video before sending them to a user.
The latest update comes soon after WhatsApp co-founder and CEO Jan Koum announced on Facebook that the messaging app now has 800 million users.
Koum wrote on Facebook, “WhatsApp – now serving 800,000,000 monthly active users. Reminder for the press out there: active and registered users are not the same thing.”

This is a big milestone for WhatsApp, since the company had announced in January that it had the 700 million monthly active users. That means in a span of over 4 months, they added another 100 million monthly active users.

Friday, 7 March 2014

What is 4K resolution? Explained

As if 3D TV and LED LCD vs. OLED vs. plasma and 120Hz and the Soap Opera Effect weren't confusing enough, in the last year we have seen the rise of a new HDTV technology called 4K. Or if you use its official name, Ultra High Definition (UHD).
UHD is an "umbrella term" that encompasses higher resolutions (more pixels) than HDTV, as well as more realistic color and higher frame rates. Today and this year, pretty much the only one of those improvements available in new TVs and content is 4K resolution, so that's what we'll talk about here. Judging from the new TVs shown at CES 2014, manufacturers are tripping over themselves to bring you a new array of 4K compatible products.
But just like 3D and HD before it, 4K has a case of putting the hardware chicken before the software egg. About 15 months after 4K TVs first appeared on the market , there's little consumer 4K content available: no TV channels or Blu-ray discs, just a few specialized video players, YouTube and other clips of varying quality, and promises of streaming video.
Still, the shift from 1080p to 4K TV hardware is inevitable. This year 4K TVs will replace high-end 1080p models as the best-performing LED LCD-based sets on the market -- although the reason they're better will have nothing to do with resolution.

Confused again? Don't worry, we'll walk you through, starting with the question: So what is 4K anyway, and what makes it different from high definition?

Today, the TV industry supports two HD formats; often referred to as 720p (1280x720 pixels) and 1080p (1920x1080 pixels, Full HD). All our HDTVs come with Full HD resolution but content – movies, TV shows, games etc. – is 720p in many cases. There are, in other words, two sides of the equation: our screen and the content. Both are important but the truth is that content is often the bottleneck. Here is a short overview of the typical resolution classes for content.

·  SD: DVDs, standard TV channels

·  HD 720p: Most HD TV channels, some streaming services

·  Full HD 1080p: Blu-ray, some streaming services

Ultra HD is the next step on the resolution ladder. It also goes by the name UHD or 4K (4K is actually a movie theatre format but the name is often used for Ultra HD). Just like the HD standard, which covers both 720p and 1080p, Ultra HD covers 4K (also called 2160p) and 8K (also called 4320p). As you might have noticed by now the naming methodology is not straightforward and the industry likes to refer to things in different fashions. Again we can offer a roughly outlined overview.

·  Full HD = 1920x1080 pixels = 1080p = 2K

·  Ultra HD = 3840x2160 pixels = 2160p = 4K

·  Ultra HD = 7680x4320 pixels = 4320p = 8K

What's in a name? '4K' versus 'UHD'


In August 2012, the Consumer Electronics Association introduced the term Ultra High Definition, partly defined as resolutions of "at least 3,840x2,160 pixels". The idea was to replace the term 4K. The CEA's name lasted less than a day, as Sony then announced it was going to call the technology "4K Ultra High Definition". This is the term now used by most other TV manufacturers too, who seem interested in covering all the buzzword bases at the expense of brevity.
In practice, you will often see UHD used interchangeably with 4K, whether describing TVs, source devices, accessories or content. We at CNET say "4K" instead of "UHD" almost exclusively, and our readers and Google strongly agree.

 Digital resolutions: A primer

The latest in a line of broadcast and media resolutions, 4K is due to replace 1080p as the highest-resolution signal available for in-home movies and television.

With the arrival of 4K there are four main resolution standards for use in the home: standard definition (480p/540p) , high definition (720p), full high definition (1080i/p) and ultra high definition (2160p).

When used in a home context, 4K/UHD means the TV's screen has a minimum resolution of 3,840 pixels wide and 2,160 pixels high, making it the equivalent to two 1080p screens in height and two in length. This resolution was originally known as "Quad HD," and it's used by basically every 4K TV.
Another resolution, known as 4Kx2K (4,096x2,160 pixels), is used by some projectors and many professional cameras. It also falls under the umbrella of 4K/UHD. Other shooting resolutions are also employed in the pro realm, depending on the camera.

While 4K is relatively new, high definition (HD) itself has been with us for about a decade, and is the format used in Blu-ray movies and HD broadcasts. There are three main versions of HD: full high definition 1080p (progressive), 1080i (interlaced), and 720p (also called simply "high definition").
Despite the existence of HD and 4K, many television programs, online videos and all DVDs are still presented in standard definition, loosely defined as 480 lines. Standard definition began life as NTSC TV broadcasts before switching to digital with the introduction of ATSC in 2007.

The beginnings of digital cinema and 4K

While it's currently being touted as a new broadcast and streaming resolution--particularly with the appearance of the HEVC H.256 codec--the roots of 4K are in the theater.
When George Lucas was preparing to make his long-promised prequels to the "Star Wars" movies in the late '90s, he was experimenting with new digital formats as a replacement for film. Film stock is incredibly expensive to produce, transport, and store. If movie houses could simply download a digital movie file and display it on a digital projector, the industry could save a lot of money. In a time when cinemas are under siege from on-demand cable services and streaming video, cost-cutting helps to keep them competitive.

How 3D drove the takeup of 4K

Do you remember seeing James Cameron's "Avatar 3D" in the theater? Cameron's movie about "giant blue dudes" helped drive high-resolution 4K Sony projectors into theaters around the world. Movie studios keen to maintain that momentum then released a slew of 3D films -- mostly converted from 2D -- and continued the expansion of 4K cinemas. While 3D has declined in popularity, 4K movies are here to stay.
The industry has been quick to distance itself from 3D, and has taken care not to make the same mistakes by equating 4K with 3D. But there are obvious benefits for 3D on a 4K TV screen. In our extended hands-on with the Sony XBR-84X900, we saw the best 3D TV we'd ever tested. It delivered the comfort and lack-of-crosstalk benefits of passive 3D, while delivering enough resolution (1080p to each eye) to be free of the interlacing and line structure artifacts inherent in 1080p passive TVs. Higher resolutions like 4K are also necessary for new implementations of glasses-free 3D TVs.

From theater to the home

While 4K resolution makes perfect sense for huge theatrical screens, its benefits are less visible on TVs at home, watched from normal seating distances.


In the last section we told you what Ultra HD is, measured in pixels. But the Ultra HD standard covers more than resolution. Ultra HD was recently approved as the official name, and in the latest BT.2020 recommendation from ITU (who is responsible for the standards) other exciting elements are included.


With Ultra HD it has also been proposed that we increase “frames per second” (often referred to as frequency, Hz or fps). We need to once again look at the history of fps to understand the future.

Today, pretty much all Hollywood movies are shot at 24 fps (24 new pictures per second) and TV programs at 25 fps or 30 fps (25 pictures per second in PAL countries and 30 pictures per second in NTSC countries). Games are typically rendered at a frame rates between 30 and 60 fps on a game console and up to 120 fps on a PC. In other words; there is a huge difference between the frame rates; and therefore how smooth you will perceive motion. Ultra HD proposes that movies and TV programs can be recorded and reproduced at frame rates up to 120 fps; 120 pictures each second. Ultra HD will support 24, 25, 48, 50, 60 and 120 fps if the full recommendation is implemented in practice.

If you have watched The Hobbit in HFR format you have experienced a movie shot in true 48 fps, and then you probably know what 48 can do for picture quality and the movie experience (read our thoughts on the The Hobbit in HFR here). The two coming Avatar movies will most likely be shot at 60 fps so we are not even close to 120 fps yet. Some movie producers even believe that a higher frame rate is a far greater improvement in picture quality than a step up in pixel resolution is right now. And yes, the move from 24 Hz to just 48 or 60 Hz is truly a small revolution in picture quality.


But what about colors? Well, major improvements are proposed in this area, too. With Ultra HD a new color gamut called Rec.2020 is introduced. Today, we use the so-called Rec.709 color gamut for Full HD. Do not mind the names, as it is relatively simple. It is best illustrated with a graph.

The human eye can only perceive a specific set of colors. We cannot perceive, for example, infrared (you cannot see the infrared light coming out of your TV remote) and there are other ”colors” that are invisible to us, too. The typical human eye can perceive all the colors illustrated in the color spectrum graph below.

However, our TV screens, projectors and cameras cannot match all these colors so the industry has defined a smaller color gamut that movie folks and TV manufacturers can implement in products and productions; a color standard so to say. We need this standard to make sure that movie and TV productions appear correctly on our TV screens. In the graph above you can see both Rec.709 (used in the Full HD standard) and Rec.2020 (that can be used in Ultra HD).

Rec.2020 is the larger of the two and as you can see Rec.2020 gives us many more colors to work with. It gives us a larger color gamut to pick colors from, so to say. So, therefore Ultra HD also proposes an extension of what is often referred to as color depth; an increase from the current 8-bit to 12-bit per color (and a change from 24-bit to 36-bit for all colors combined). This may sound very technical but with the color gamut explanation in mind it is fairly easy to grasp. When a TV or camera uses 8-bit per color it means that it can define 256 shades (2^8 = 256) of red, green, and blue, respectively. These three colors are used as basic colors to create all other colors. In other words; it allows us to create 256 shades of red, 256 shades of green and 256 shades of blue. In total this gives us 24-bit or 16.777 million (256x256x256) colors. The 16.777 million colors can be “picked” from inside the color gamut defined in Rec.709 that is used today for Full HD.