One of the most common questions that comes to our mind while buying a new mobile is, Which phone should I buy? Actually, there is no such thing like the “best” mobile ever. However, your mobile should match your main interests and preferences. In this guide, we will help you choose the mobile phone that best suits you.
The first thing regarding the process of choice is to define your requirements. What are the features that you need to use most? Do you care more about doing basic calls only or you need to browse the Internet frequently? Do you need to have a battery that lasts long or you need high-performance processing more? Defining your priorities makes about 70% of the decision process.
One of the factors that has a great impact on the mobile phone is the processor. If you need high performance, you’d choose a mobile with high operating frequency and complex architecture. However, processors running at high performance, consume a lot of power and hence reduce battery life. On the other hand, if processors run at low performance, they go easy on batteries. To make a balance between performance and power, ARM has announced a processor architecture called “big.LITTLE architecture”. The architecture makes use of both high-performance and low-performance cores. Apps that need high-performance use the bigger cores while apps that don’t need high-performance power should make use of the LITTLE cores and save power. Most modern Smartphones make use of this architecture.
Screen size and type are very important factors. If you prefer large screens, you should pick a phone with 5.5 inch screen or more. Many phones with large screens are available in the market such as the Google Nexus 6 and Apple’s iPhone 6 plus with 6 inch screen. If you don’t like having such a large screen size, you may want to have a phone with 5 inch screen such as Motorola “Moto G” and “Samsung Galaxy S6”. You may also want to have smaller screen sizes with 4.7 inch display such as Google Nexus 5.
Mobile phones come with a wide range of battery capacities. However, battery capacity is not the only factor that controls the battery lifetime. For example, you may have a battery with high capacity, but the phone includes many power-consuming features (such as a large screen) that makes a mobile with 4,000 mAh battery and 6 inch screen be up for the same time as a 2,500 mAh battery with 4.7 inch screen phone. So, manufacturers define battery life in terms of standby time, talk time and so on.
Camera quality is a very important factor for people who want to take photos all the time. And with the rise of the “Selfie” thing, manufacturers are paying more attention to the front camera as well as the back camera. One important thing to bear in mind that the number of Megapixels is not the only measure of the camera quality. You can find a camera with 15 Megapixels, which is of a better quality than a 20 Megapixels camera. Sensor type, focal length and other technical stuff define the quality of the camera. If you don’t want to get very detailed in technical stuff, you can always read users’ reviews about the phone you’re inspecting and see what people say about the quality of the camera. So, never be fooled by the number of Megapixels.
Source by Khaled Attia
Fake news is increasing day-by-day. During elections, for example, people are bombarded by so much information about the candidates, and much of it is not even true. Wikipedia describes it as follows:
Fake news is a type of yellow journalism or propaganda that consists of deliberate misinformation or hoaxes spread via traditional print and broadcast news media or online social media. Fake news is written and published with the intent to mislead in order to damage an agency, entity, or person, and/or gain financially or politically, often with sensationalist, exaggerated, or patently false headlines that grab attention.
It’s terrible how fake news is accepted as the truth. It’s shocking to see people use untruths to deceive others. Nowadays when someone sends you the news via WhatsApp, you first have to go and make sure if it’s true so that you don’t make a fool of yourself.
An article with the heading ‘Fake news’ has become a business model, researchers say, appeared in Fin24Tech. Say what? Untruths have become a business where people make money by lying. Whatever is happening to the world?!
Even the pope had something to say about it in an article in the online newspaper, CRUX, under the headline: Pope Francis want the Catholic Church to tackle fake news.
But it’s nothing new. Untruths have been spread since the beginning of the world. I cannot understand why people would do such a thing. Do they enjoy leading people in the wrong direction? Does it make them laugh when they see people being led into darkness by their lies, groping around in the dark looking for the truth?
I cannot believe there are people like that. But it is so, and has been from the earliest times: 2These liars have lied so well and for so long that they’ve lost their capacity for truth.
Then I wonder why people are so foolish or ignorant to run after untruths? But before I’m too critical of people, I realise that I’ve fallen for false stories too… only to realise later that I’ve been taken for a fool. Like the time long, long ago when I bought an iPad for a fairly good price, only to realise later that there’s no apple in that iPad…
You see, these people are so convincing. And they make every effort to convince you too and you have no choice but to believe them. Many people have lost their savings in this way.
As the English saying goes: If it is too good to be true, it probably is…
Each of us is responsible for ensuring that we’re not being deceived. Often, we first have to get rid of the emotions before we make a decision. We first have to get the opinion of others to make a good decision.
And I ask God to help me. I ask for peace. I ask that uncertainties stand aside so that I can get clarity. For this, I have to sit quietly, because the Holy Spirit is not known for shouting, but rather for whispering softly.
Think about this
Have you been deceived?
How can you prevent it from happening again?
Does the Holy Spirit bring you peace?
Lord, we are so easily deceived. We easily follow people who seem as if they know everything. Please protect us against them and help us fulfill our responsibility by making sure that we are on the right road. Amen.
Source by Gerjo Ben Van Der Merwe
When shopping for a new laptop, you'll certainly be browsing through a lot of locations, both on-line and off-line. In any case, you will undoubtedly run into the specs for each model. What do these things mean?
CPU, or processor, is the central brain of any computer. It's the component that does pretty much all operations. The better your processor is, the more applications you can potentially run at the same time. Also, a good processor will allow you to watch high-definition content and play games.
Almost all processors integrated into laptops nowadays come with multiple cores. This is a good thing, since a multi core environment allows for multiple processes (applications) to be run, thus leading to efficient multitasking. Your aim for a new laptop should be in the quad-core range, meaning the processor will have four cores.
System memory is another thing you should be aware of. This complements the processor in delivering a smooth experience. The more RAM you have, the more applications you can run at a time without any problems.
The hard drive is another component that determines both speed and capacity. Capacity determines the amount of stuff you can store on your computer, and speed determines the speed at which this stuff is either written to disk or read from disk. Your aim should be to get a laptop with a solid state drive, since these do not rely on spinning disks to read and write data.
HDDs or hard disk drives rely on spinning platters to write and read information, and thus are fairly limited by their speeds (most laptops carry either the 5400 rpm or the 7200 rpm versions). Hybrid drives use both older HDD technology and new SSD integrations, but these don't offer the full benefits of an SSD.
Another thing you might want to look at is the battery life. If you'll be a lot on the move, then you need something with a lot of battery life. Most ultra-books nowadays boast battery lives of up to 15 hours, with some even surpassing this threshold.
While desktops need a separate screen, laptops carry their own screen with them. If you don't plan on using a secondary display, then the display your laptop comes with should be a good one.
If the resolution is not important to you, you can still get away with a 15.4 inch laptop that renders a 1366 x 768 pixel resolution. But if you want to get a laptop for graphic design / entertainment or gaming, then you should probably get one that can render a full HD resolution at least. Some models even come with 2K or 4K screens, so make sure you consider this when deciding what to get.
Source by Emanuel Bucsa
At present, Android dominates the worldwide smartphone operating system market. Also, the statistics posted on various websites indicate that Google Play Store currently offers more apps and games than Apple Play Store. The trends depict that many developers prefer developing apps and games for the Android platform.
The developers have option to write apps and games for Android in C, C++ or Java. But Java is the official language for developing games and apps for Google’s mobile operating system. Google further recommends developers to write new Android applications and games in Java. Also, many developers find it easier to write mobile games in Java than other programming languages.
Why Many Developers prefer writing Mobile Games in Java?
Java is a Popular Programming Language
Java is currently one of the most widely used general-purpose programming languages. The developers have option to use Java for developing desktop GUI applications, web applications and mobile apps. So many beginners prefer learning a programming language that enables them to build a wide variety of applications. Also, Java enables developers to write, compile and debug code without putting any extra effort. That is why; enterprises can build mobile apps easily by deploying skilled Java programmers.
Java is a Multithreaded Programming Language
Developers always prefer writing mobile games in a programming language that supports multithreading fully. The multithreading support is essential for performing several tasks concurrently within a single program. So the users can easily play the mobile games written in Java while performing other tasks like checking emails and browsing internet. The multitasking support makes it easier for programmers to build games that allow users to switch from one task to another seamlessly.
Facilitates Cross-Platform Game Development
Unlike other programming languages, Java enables developers to port applications from one platform to another seamlessly. They programmers can write the mobile game in Java once, and run it on multiple devices and platforms without recompiling the code and using extra implementation dependencies. So it becomes easier for developers to build the mobile game initially for the Android operating system, and reuse the same code to extend the game to other mobile platforms.
Helps Developers to Build Flawless Games
Like mobile apps, mobile games also need to work flawlessly and deliver richer user experience to become popular and profitable. So the developers need to ensure that the code written by them is flawless. Also, the must identify and repair the bugs or flaws in the code immediately. Unlike other programming languages, Java enables programmers to identify and eliminate coding errors early and quickly. The programmers can further take advantage of the Java compiler to detect errors occurring at the time of code execution.
Features Included in Java 2 Micro Edition (J2ME)
While writing mobile games in Java, the developers can take advantage of the robust features provided by Java 2 Micro Edition (J2ME). In addition to being an open platform, J2ME further includes Mobile Information Device Profile (MIDP) API. The MIDP API helps developers to create apps and games for constrained devices. The latest version of MIDP API comes with several new features to make mobile game development simpler and faster.
The programmers can further use Java runtime environment and libraries to make the game run seamlessly on various mobile devices. At the same time, the rich user interface features of J2ME make it easier for developers to make the games more visually appealing. Also, the platform can queue network operations and catch efficiently. Hence, the developers can use J2ME to enable users to play the games even when there is no internet connectivity.
Loads of Game Development Tools
The developers can further avail a number of tools to build 2D and 3D mobile games in Java rapidly. For instance, the programmers can use advanced 3D game engines like jMonkeyEngine to create stunning 3D worlds. These tools further boost the performance of Java games significantly, and enables developers to port the games to different platforms.
Some of these tools even allow programmers to write robust games in Java using widely used integrated development environments (IDEs) like NetBeans and Eclipse. These game development tools contribute immensely towards making Java mobile game development popular.
The Java developers also have option to use several mobile game development tools to build robust games in Java within a shorter amount of time. The suite of 2D and 3D tools provided by these frameworks make it easier for programmers to create games that deliver richer user experience across many devices powered by the Android operating system.
Source by Mayur Prakash
He could take his own advice and go his own way, now that he has separated from his popular band. Better yet, he could just join up with a group in need of another lead singer and guitar player.
Lindsey Buckingham wrote many of the hits for Fleetwood Mac, including "Don't Stop" and "Go Your Own Way." Nevertheless, he and the group have parted ways, so he has been replaced for the upcoming tour.
How great would it be for fans if Buckingham joined the Eagles, who like Fleetwood Mac are embarking on a 26 days tour this spring. He could help fill the void left by the 2016 death of guitarist / singer Glenn Frey, whose vocal range in hits like "Lyin 'Eyes" and "Already Gone" is not dissimilar to that used by Buckingham on the Fleetwood Mac hits.
Buckingham already has several connections to the Eagles, well beyond the fact that Fleetwood Mac and the latter quintet shared dominance on the pop charts from the mid to late Seventies. Both musical outfits have also suffered internal conflicts and several lineup changes over the ensuing years, as well as making successful comeback albums.
Many of the ties involve fellow Californian Warren Zevon who, like both Buckingham and the members of the Eagles, was part of The West Coast folk rock scene that blossomed in the years after the Summer of '67 music festival in Height-Asbury outside of San Francisco.
J .. D. Souther, who helped write several hit songs for the Eagles, appeared on Zevon's breakthrough album Excitable Boy. Also singing background vocals on the title track of that record was Linda Rondstadt, who had given the Hotel California guys their start by enlisting them as her backing band years earlier.
Another artist who frequently collaborated on songs with them is Jackson Browne, who helped pen the huge hit "Take It Easy." Browne was the producer of Excitable Boy, and he also wrote "Tenderness in the Block" with Zevon.
Buckingham's band mates in Fleetwood Mac, John McVie and Mick Fleetwood also had roles on Zevon's gold record. McVie played the bass and Fleetwood the drums on the single "Werewolves of London."
It was on the preceding album, Zevon's self-titled debut, where Buckingham had worked directly with the two key members of the Eagles. Both Buckingham and Glenn Frey played guitar on several tracks, while drummer-vocalist Don Henley contributed backing harmony on those same songs.
It is easy to imagine Buckingham successfully covering Grey's vocal delivery on "Heartache Tonight" or the more sensitive "New Kid In Town." It I quite delightful to think of Eagles' guitarist Joe Walsh add another lead to some well-known Buckingham tunes, which would make the band's tour even more highly anticipated.
Source by Doug Poe
Modern bank customers rarely think twice about logging into a mobile device to check accounts and schedule transactions. Mobile apps are convenient and user friendly. According to a Federal Reserve report, over half of smartphone users with bank accounts used mobile banking in 2015. Online banking via a mobile device also represents a security risk. Cybercriminals use a variety of techniques to gain entrance to individual user accounts and bank information.
Both Customers and Financial Institutions Play a Role in Online Banking Security
Financial institutions and banking customers are responsible for mobile banking security. Both parties must exercise caution and use security best practices to reduce the risk of mobile threats. Customers are responsible for using their devices in a security conscious way. Banks must develop, maintain, and optimize formal applications designed to protect end users.
Banking security breaches can lead to a loss of financial assets, identity theft, and other adverse outcomes. Every business-related security threat can cost organizations millions of dollars in remediation activities and harm institutional credibility. A proactive approach to online banking security effectively reduces the risk of cybersecurity incidents and improves customer confidence in mobile financial activities.
5 Tips Customers Can Use to Improve Mobile Banking Security
Mobile users often take device security for granted. Apple users trust in the company's security practices. The Android platform carries a potentially higher degree of risk as an open digital ecosystem. When device users presume the safety of apps they download and the security of their devices, they may accidentally open a backdoor to malicious activities. Customers can use these five tips to protect the security of their mobile online banking activities:
- Only use official banking apps and secure websites. If you plan to use a mobile device for banking activities, download the official banking app. Look for information on the website to confirm the app's legitimacy, and avoid using your mobile browser to access your bank account. Some users link their bank accounts to budget apps or other money management apps. Remember that every account you connect to your bank account represents a potential risk. Safeguard your information with official and secure apps.
- Double check the security of all third party apps. Cybercriminals may gain access to your device through a third party app not associated with an official banking app. For example, someone could sneak a malware program designed to record keystrokes in with a third party app. Using this type of technology, a criminal could possibly obtain information about your login credentials and online activities.
- Avoid using bank-related links. As an end user, you may assume the validity of a link in a text message or email. Unfortunately, some criminals use phishing and spoofing practices to obtain revealing information from seemingly innocent interfaces. Always back out of a message and go through official channels to access your account.
- Never check your bank account while using a public network. Public Wi-Fi and other public networks are notoriously insecure. Use cellular network connectivity or a VPN (virtual private network) to protect your activities while in public.
- Always lock and keep track of your mobile devices. If you leave your device unlocked on a park bench, a malicious individual could take advantage of the situation. Use the lock functions on smartphones, never save login information on your apps, and try to keep track of all your mobile devices.
Source by Poul Smith
Samsung is a globally renowned multinational company with its headquarters in Seoul, South Korea. The company has a number of different product verticals sharing the same brand name globally.
Samsung was founded in 1938 and it entered the electronics industry in the late 1960’s. Since the 1990’s, the company’s major source of revenue has been from its electronics vertical, comprising of mobile phones and semiconductors.
Samsung Electronics is the parent company’s largest subsidiary and was the world’s largest I.T. company in the calendar year 2012 holding position number 4 in terms of market capitalization.
The parent company, Samsung, has always been a strong regional powerhouse influencing much of South Korea’s economy, political dynamics and social culture. Samsung’s total revenue figures accounts for close to 17% of the country’s total GDP.
Samsung Telecommunications is a major business unit within Samsung Electronics and services product lines covering mobiles, MP3 players, laptop computers etc.
The time frame post 2007 has proved phenomenal for Samsung Telecommunication’s mobile phones vertical spurring a growth rate of 40%. Soon, it became the world’s 2nd largest mobile device manufacturer after Apple Inc.
Currently, Samsung is the leading manufacturer of smart phones running the mobile operating system Google Android with a global market share of 46%.
The latest offering from Samsung Telecommunication’s is the smart phone model, Samsung Galaxy Note 7. In India, the Samsung Note 7 was launched amidst much fanfare in August 2016.
In terms of the display, the Samsung Galaxy Note 7 ships with a 5.7 inch capacitive touch screen delivering a crisp and smooth resolution of 1440×2560 pixels at a PPI measuring of 518.
Processing power for the Galaxy Note 7 is delivered through an Exynos 8890 octa-core processor clocking 1.6 GHz.
The Note 7 ships out with a RAM of 4GB while the internal storage is pegged at 64GB which can be expanded (up to 256GB) through a microSD card.
For customers who are not camera shy, the Samsung Galaxy Note 7 is equipped with a 12 megapixel rear camera (with flash) coupled with a 5 megapixel front camera for selfie lovers.
From the software standpoint, the Galaxy Note 7 runs on Android Marshmallow having version 6.0.1.
Battery life is quite good considering the unit has a power cell equating to 3500mAh which is non-removal in nature.
The Note 7 has dimensions measuring 153.50 x 73.90 x 7.90 (height x width x thickness) and the weight is a comfortable 169 grams.
The Samsung Galaxy Note 7 has support for a single Nano SIM card and includes a plethora of modern connectivity tools like Wi-Fi, 4G LTE, NFC, Bluetooth and GPS etc.
Onboard sensors within the Galaxy Note 7 cover proximity, ambient light, accelerometer and gyroscope. Audio headphones are supported by the Galaxy Note 7 through a 3.5mm jack.
The Galaxy Note 7 is available in a range of vibrant colors like Blue, Gold, Silver & Black.
The Note 7 will also have compatibility with a range of Samsung Accessories like Smart Watch, wireless headsets etc.
Prospective customers can now place confirmed orders through all the major e-commerce platforms like Flipkart, Amazon and Snapdeal.
The release of the Samsung Galaxy Note 7 further cements the position of Samsung Electronics as a potent rival in the intensely competitive global market for smart phones.
Source by Anil Sharma
Different app development projects face different types of challenges. However, there are certain common problems which, developers mostly face while building mobile apps. Addressing this phenomenon, we would like to help you know about such type of challenges and solutions to overcome them.
Budget Overruns and Product Delays
Delay is the most significant challenge faced by enterprises for getting a product shipped. However, it is specifically prevalent in complex types of projects. Delays occur because of a number of reasons, but, those are mostly an outcome of improper capacity planning, poor success, talent gaps and dependencies.
Often, product delays explicitly relates to budget overruns. The adage, 'Time is Money' is true in this scenario. It will take more time to release and you will incur more waste, which certainly is not the ideal choice.
How to Fix it: Avoiding budget overruns and product delays certainly requires extensive planning. However, there are standard ways to decrease budget, associated risks and time in projects like:
- Iterative Development
- Capacity Planning
Lack of In-house Talent
Many enterprises think that they can use the existing QA and development teams for mobile projects. Well, there is another assumption that the in-house teams are capable enough to learn the technology quickly for meeting the mobile development needs of the company. But, all these assumptions may prove harmful as because developing mobile apps is simply a different discipline and to excel in every discipline, experience plays an imperative role.
How to Fix it: Generally speaking, there are 2 options: either source one specialized app development partner or hire talent.
Different Priorities of Many Stakeholders
It is quite difficult to deal with the changing priority, as because it can throw off the timelines, affect the scope of business and kill the budgets. For enterprises having a rigid process of app development, which doesn't adapt well with the changes, this type of challenge will lead them to devastating consequences.
How to fix it: You need to deal with the changing requirements and differing priority effectively, which will help you to frame the entire process more adaptable and flexible.
These are the most 3 common types of challenges that might occur in your way of mobile app development. These issues are common problems of the product development process and so, it is better to seek for professionalized help. Joining hands with experienced professionals will ultimately help you to avoid the hugest blockers of product success.
Source by Sanjay Nandy
In the market exists several software tools to recover data on Mac’s based-computers. One of them is iSkysoft Data Recovery for a Mac; a solid product designed to operate in the most common disaster scenarios. This software comes with four modules: “Lost Data Recovery”, “Raw Data Recovery”, “Resume Recovery” and “Partition Recovery”.
Installation: It’s a simple procedure, performed entirely by a wizard. We should note that it offers the USB installation option, allowing to perform the recovery without causing further damage on the destination hard drive.
Data Recovery Modes
Lost Data Recovery: This mode recovers those removed files, deleted using Command + Delete or Trash emptied. Once this mode is started, it will show the available local disk drives; the user should select an unit and pressing the “Scan” button the process starts. The scanning time depends upon the disk size and number of files stored on it. When the process is completed, the recoverable files will be shown as a list, and the user may preview and retrieve them to a previously selected destination.
RAW Data Recovery: This module is recommended when the unit is corrupted, or it has been formatted by mistake. It performs a deep scan recovering files by file-signature. The routine’s layout is similar to the first method; the user must select a destination and pressing the “Scan” button the process starts. When the process is done, the recoverable files will be shown; in instance, the user can preview the files and select one of them. This option requires more processing time than the “Lost Data Recovery”; to prevent it, the method includes filtering capabilities, which reduce the scanning time.
Partition Recovery: It can be used when a partition is inaccessible due to errors or serious damage caused by accidentally removed, partition format, resize or simply issues related to media corruption. The process begins when the user presses the “Partition Search” button; the searching routine examines the problematic partition; once the process is done, the recoverable files are displayed; you can select and set a target drive, to recover them.
Resume Recovery: It has been developed to suspend temporarily a long process; in such situations it is possible to press the “Stop” button, to resume the process.
Conclusion: Once the product’s full testing was completed, we have seen that iSkySoft Data Recovery has been effective restoring diverse file types. Regarding to its usability, we note that the application can be operated by a wide user’s range even for beginners without technical knowledge, thanks to wizards-based interface.
Source by Clay Reynolds
Video interfaces connect the monitor to the Image decoding device. Concerns over image quality and video protection has led to significant changes in display interface technology gradually. Although the VGA interface is still used in PCs, the future is moving to digital interfaces. Various methods including analog connector, hybrid digital plus analog interfaces and several digital interfaces have been developed up to now. However, there is some overlap in the features of display interfaces. We study several practical analog and digital video interfaces.
Analog display interfaces
S-video, standing for Separate Video, transmits video signals over a cable by dividing into two separate signals: one for color and another for brightness. Due to this separation, sharper and higher quality images than composite video can be achieved. S-video does not carry audio, so it commonly run with red and white RCA audio cables.
This video interface is superior over both composite and S-video. Because its three cables better preserve the various elements of the video signal including brightness and color, resulting in enhanced picture quality. Component video uses three RCA connections, Red, Blue and Green to send video signals. It carries visual data only, meaning that audio cables are still required. Hence, it is usually paired with stereo (red and white) RCA audio connections.
VGA or Video Graphics Array is the most popular video connection between computers and monitors. It is used on computer video cards, projectors and set top boxes. A standard VGA connection has 15 pins and supports display resolution of 640*480 pixels, while enhanced version SVGA is allowed for resolution of 1024*768. It is worth mentioning that the maximum resolution is limited by the connector bandwidth and cable quality and length.
In the VGA connector, due to tiny little pins into a small connector, building small coaxial cables is hard.
Digital display interfaces
Digital Video Interface (DVI) has been designed as a replacement for VGA (analog interface). However, in some cases DVI still supports analog displays. In fact, DVI is the only standard which can carry both analog and digital signals on one interface. If the display is analog, the DVI connection will convert the digital signal to an analog signal, otherwise no conversion will be necessary. It is worth mentioning that, the analog video bandwidth of DVI is higher than VGA, thus higher resolution can be supported compared to VGA. So, it can be applied by high resolution displays such as UXGA and HDTV.
DVI cables or ports with fewer pins are designed for lower resolution devices. In order to support maximum resolution, the DVI port should contain all the pins. Since DVI does not support High-bandwidth Digital Content Protection (HDCP) encryption by default, by using hardware which only includes DVI ports, the video protection is not guaranteed. This is the biggest drawback of DVI. Since HDCP protects video from illegal copying, this feature is very critical for video surveillance systems.
DVI has several variants: DVI-D (digital only), DVI-A (analog only) and integrated DVI-I which carries both digital and analog video. DVI connections are popular on computer video cards, monitors and projectors.
High-Definition Multimedia Interface (HDMI) transmits uncompressed digital HD video and audio data in a single cable, while other connections require separate cables for audio and video. For instance, a component cable connection uses three cables for video and two for audio, resulting in five cables totally. While using HDMI, the uncompressed audio and video information can be transmitted using one cable, thus cable clutter is eliminated greatly.
Since HDMI is a digital connection, it is more robust to interference and noise problem compared to analog connections. Since most processes are the digital such as DVD players, Blue-ray players and game consoles, so by using HDMI for these consumers the analog to digital conversion will be eliminated. So, it leads to better quality picture and sound compared to other connections. Also HDMI supports HDCP, meaning that it is practical for video surveillance systems. HDMI connection is the most popular display interface, found on every TV, AV receiver, Blue-ray disk player, DVR, laptops and digital cameras, because by using HDMI, there is no need to buy separate audio and video cables. Therefore, fewer cables and connections are used.
DisplayPort as a standard port to connect PCs, laptops, and other computers to video monitors has been called ultimate digital connection. It is a high definition AV connection which transmits audio and video data over a single cable with a locking connector. DisplayPort is a simple but high bandwidth interface which provides true digital images and clear sounds. It can even supply power.
One of the advantages of DisplayPort is that it works with older technology, as by using simple adapters, it is compatible with VGA, DVI even HDMI. DisplayPort enables high display performance, robustness, versatility, highest degree of system integration, and great interoperability among various device types. DisplayPort was originally developed as the next generation personal computer display interface and is now available on a wide range of tablets, notebooks, desktop computers and monitors. It is included on all newer Macs and many Dell, HP, and Lenovo computers and is also available on video graphics cards. DisplayPort can be used for consumer electronics but is not common.
DisplayPort is hot-pluggable, meaning that connections can be reconfigured without the need to restart the device. Also DisplayPort supports DPCP (DisplayPort Content Protection) and HDCP (High bandwidth Digital Content Protection). These two prevent illegal copying, so they are very critical in video security.
Comparing HDMI and DisplayPort
HDMI and DisplayPort are modern serial interfaces to transmit digital video over cables from one device to another. They are replacement for analog interfaces like VGA and S-video. DisplayPort is a newer connector can be found on Apple’s iMac desktops. It is compatible with HDMI signals, thus product interoperability is achieved.
The HDMI and DisplayPort both carry audio and video data on a same cable. They also support High-bandwidth Digital Content Protection (HDCP) to encrypt copyrighted video and audio data for the newest HD content. Therefore, data is protected from being played or copied during transmission over the interface.
Transmitting video and audio in high definition format (HD) must be conducted through interfaces with high data transfer rate. HDMI and DisplayPort are both high-speed digital interfaces, but they differ in several aspects. HDMI is mainly used for consumer electronics equipment, while DisplayPort is primarily developed for computer and peripheral video connections. In the following some of the main differences between these two, are studied.
Type of connector:
There are three main types of HDMI ports, each with 19 pins. The standard size (Type A) commonly found on TVs, projectors, set-top boxes and laptops. Smaller HDMI (Type B) is called mini- and mainly found on some laptops and tablets. The smallest is micro-HDMI (Type C) found on tablets and smartphones.
DisplayPort is available in two different types with 20 pins. One of them is the full-size version and the other is smaller called Mini DisplayPort which is used in Apple laptops.
Supporting the quantity of monitors (video and audio stream):
In video surveillance, using more than one display is preferable. Also, many gamers use two or more monitors simultaneously. HDMI can handle single video stream and a single audio stream, so it can support only one display at a time.
On the other hand, DiaplayPort can connect to multiple monitors up to four with a 1920-by-1200 pixel resolution. By using multiple DisplayPort interfaces, connecting as many as six display to one output is feasible.
The maximum cable length supported by each interface is an important subject. Since high data rate signals will be degraded over lengths, so cables should be kept short. A maximum HDMI cable length has not been specified, and a wide range of lengths is available, but manufacturers limit them to 15 meters (about 49 feet). For instance, by HDMI cables as long as 50 feet, the quality of video data has been degraded. In order to cover a long distance, a signal booster or an active cable to amplify the signal might be needed.
For DisplayPort, 3840- by- 2160 pixels (4K) video over a length up to 2 meters by using a passive cable can be achieved. Also, running a passive cable up to 15 meters is possible, but resolution will be limited to 1080p (full-HD), as defined by the standard.
DisplayPort does not support Ethernet data and the standard does not have an audio return channel, while by using the latest version of HDMI, 100 Mbps HDMI Ethernet Channel (HEC) can be implemented. HEC is used primarily for audio control.
The Ethernet channel can be used to provide an Internet connection between devices, especially when HDMI devices are used for streaming video or other content from the Internet.
Advantages of HDMI in video surveillance
HDMI cables have several advantages that make it superior over some interfaces like DVI and component video, especially in video surveillance systems.
HDMI includes all components of both video and audio data in one cable, so there is no need for extra cables. Because, everything is contained in one compact cable package. HDMI transmission line could be used instead of at most 13 similar transmission lines, thus the problem of cable clutter will be solved effectively.
On the other hand, like many other modern data transmission cables, an HDMI cable is composed of a series of twisted pairs. It has been proved that this cable manufacturing technology, is superior over other cables even huge coaxial cables for reducing noise and interferences. Also HDMI guarantees HDCP, thus video information is protected from copying during transmission, confirming its benefit in video surveillance.
Why we should consider DisplayPort in addition to HDMI in video surveillance?
In video streaming, choosing the types of video connection to stream the content to the display is an important issue. Over the years, delivering this content through HDMI, DVI, and VGA cables has been the most popular method.
In recent years, a new technology called DisplayPort has been developed. It has slowly been adopted by motherboard and displays. By the newest version DisplayPort 1.2, achieving to 4K60p resolution (3840×2160@60Hz) is possible, while HDMI only provides this resolution at half the frame rate or less.
The most important advantage of DisplayPort 1.2 over the other standards is a Multi-Stream Transport (MST) technology, in which DisplayPort can transfer multiple video streams from one video output by using 21.6 Gbps bandwidth. Therefore, achieving up to 4 displays with 1080p resolution from a single DisplayPort output is possible, confirming the benefit of DisplayPort for video surveillance.
The main digital connectors used on computers and display devices are DVI and HDMI. DisplayPort is a newer connector mainly designed to replace VGA and DVI ports. The first choice to connect a device to display is HDMI which is commonly used in the most NVRs. The cables are cheap and it also carries audio. On the other hand, HDMI has some limitations and is not a perfect choice for all purposes. In most cases HDMI is fine, but for really high resolutions and frame rates, other options might be taken into consideration.
Since DisplayPort can support multiple displays and also due to its ability to connect to nearly any other type of monitor with an inexpensive adapter, getting a video recorder device which offers DisplayPort in addition to HDMI, is an admirable choice in video surveillance industry.
Source by Maya Avery