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Samsung Galaxy A31
The Samsung Galaxy A31 is a mid-range Android smartphone developed by Samsung Electronics as part of their 2020 A-series smartphone lineup. It was announced on March 24, 2020, and first released on April 27, 2020, as the successor to the Galaxy A30 and A30s. The phone comes preinstalled with Android 10 and Samsung's custom One UI 2.1 software overlay.The display User Interface from Samsung Galaxy A31 is Infinity-U. Specifications Hardware The Samsung Galaxy A31 is a plastic build with a glass front. The phone's 6.4-inch, FHD Super AMOLED panel has a screen-to-body ratio of 84.9% and an aspect ratio of 20:9 to match that of other Samsung phones sold in 2020. An optical, under-display fingerprint reader replaces the rear-mounted one seen on the previous A30 models. The new L-shaped rear camera system (similar to the ones seen on newer Samsung phones) utilizes four cameras, a 48 MP main sensor with an f/2.0 aperture, an 8 MP ultra-wide lens with a 123° field of view an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ARM Cortex-A75
The ARM Cortex-A75 is a central processing unit implementing the ARMv8.2-A 64-bit instruction set designed by ARM Holdings's Sophia design centre. The Cortex-A75 is a 3-wide decode out-of-order superscalar pipeline. The Cortex-A75 serves as the successor of the Cortex-A73, designed to improve performance by 20% over the A73 in mobile applications while maintaining the same efficiency. Design According to ARM, the A75 is expected to offer 16–48% better performance than an A73 and is targeted beyond mobile workloads. The A75 also features an increased TDP envelope of 2 W, enabling increased performance. The Cortex-A75 and Cortex-A55 cores are the first products to support ARM's DynamIQ technology. The successor to big.LITTLE, this technology is designed to be more flexible and scalable when designing multi-core products. Licensing The Cortex-A75 is available as SIP core to licensees, and its design makes it suitable for integration with other SIP cores (e.g. GPU, di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samsung Galaxy A Series
The Samsung Galaxy A series is a line of mid-range smartphones and tablets manufactured by Samsung Electronics as part of their Galaxy line. The first model in the series was the first-generation Galaxy Alpha, released on 31 October 2014. Following the announcement of the 2017 series, Samsung announced that they hoped to sell up to 20 million Galaxy A series smartphones, targeting consumers in Europe, Africa, Asia, the Middle East and Latin America. As of 2020, most of the Galaxy A series models are available in most countries. Galaxy Tab A is also part of the A series and is available in most countries as well. Timeline Predecessor The "Galaxy A" nameplate first appeared on the Samsung SHW-M100S, which was released in 2010 exclusively for the South Korean market and known as the Samsung Anycall Galaxy A. It was a mid-range device and positioned well below the flagship Galaxy S. Samsung Galaxy Alpha and A (2015) series The Samsung Galaxy Alpha was introduced on 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Your Phone
Phone Link, previously Your Phone, is an app developed by Microsoft to connect Windows 10 and Windows 11 PCs to Android and iOS devices. It enables a PC to access the 2000 most recent photos on a connected phone, send SMS messages, and make phone calls. As part of the Windows 10 October 2018 Update (1809), it replaced the legacy Phone Companion app. Phone Link can also be used to mirror the screen of an Android device; however this feature is currently only available on select devices with the Link to Windows service pre-installed. The app also has a cross-device copy and paste feature allowing users to send copied text and images between devices using the same copy and paste shortcuts on each device. History On May 26, 2015, Microsoft announced the Phone Companion app for connecting Windows 10 PCs to Windows Phone, Android, and iPhone. At its Build 2018 event on May 7, 2018, Microsoft presented the Your Phone app, which allowed users to use their PCs to see recent photos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samsung Pay
Samsung Pay (stylized as SΛMSUNG Pay) is a mobile payment and digital wallet service by Samsung Electronics that lets users make payments using compatible phones and other Samsung-produced devices. The service supports contactless payments using near-field communications (NFC), but also supports magnetic strip-only payment terminals by incorporating magnetic secure transmission (MST) in select devices. In India, it also supports bill payments. The service was launched in South Korea on August 20, 2015, and in the United States on September 28 of the same year. Service Samsung Pay was developed from the intellectual property of LoopPay, a crowdfunded startup company that Samsung acquired in February 2015 for an estimated $300m, one of the largest acquisitions made by the firm. The service supports both NFC-based mobile payment systems (which are prioritized when support is detected), as well as those that only support magnetic stripes. This is accomplished via a technology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contactless Payment
Contactless payment systems are credit cards and debit cards, key fobs, smart cards, or other devices, including smartphones and other mobile devices, that use radio-frequency identification (RFID) or near-field communication (NFC, e.g. Samsung Pay, Apple Pay, Google Pay, Fitbit Pay, or any bank mobile application that supports contactless) for making secure payments. The embedded integrated circuit chip and antenna enable consumers to wave their card, fob, or handheld device over a reader at the point of sale terminal. Contactless payments are made in close physical proximity, unlike other types of mobile payments which use broad-area cellular or WiFi networks and do not involve close physical proximity. EMV is a common standard used by major credit card and smartphone companies for use in general commerce. Contactless smart cards that function as stored-value cards are becoming popular for use as transit system farecards, such as the Oyster card or RioCard. These can ofte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ampere Hour
An ampere hour or amp hour (symbol: A⋅h or A h; often simplified as Ah) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing for one hour, or 3,600 coulombs. The commonly seen milliampere hour (symbol: mA⋅h, mA h, simplified as mAh) is one-thousandth of an ampere hour (3.6 coulombs). Use The ampere hour is frequently used in measurements of electrochemical systems such as electroplating and for battery capacity where the commonly known nominal voltage is dropped. A ''milliampere second'' (mA⋅s) is a unit of measurement used in X-ray imaging, diagnostic imaging, and radiation therapy. It is equivalent to a ''millicoulomb''. This quantity is proportional to the total X-ray energy produced by a given X-ray tube operated at a particular voltage. The same total dose can be delivered in different time periods depending on the X-ray tube current. To he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra Wide Angle Lens
An ultra wide-angle lens is a lens whose focal length is shorter than that of an average wide-angle lens, providing an even wider view. The term denotes a different range of lenses, relative to the size of the sensor in the camera in question. * For 1" any 9mm or shorter is considered ultra wide angle. * For 4/3" any 10 mm or shorter lens is considered ultra wide angle. * For APS-C any lens shorter than 15 mm. * For 35mm film or full-frame sensor any lens shorter than 24 mm * For 6x4.5 cm any lens shorter than 41 mm * For 6x6 cm and 6x7 cm any lens shorter than 56 mm Features 'Fisheye' and rectilinear lenses Ultra-wide angle lenses come in two varieties: Fisheye lenses with curvilinear barrel distortion, and rectilinear lenses which are designed so that straight lines in the scene will render straight (uncurved) in the photographic image and thus lack the extreme distortion that is characteristic of a fisheye lens. Neither denotes a particular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aperture
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane. An optical system typically has many openings or structures that limit the ray bundles (ray bundles are also known as ''pencils'' of light). These structures may be the edge of a lens or mirror, or a ring or other fixture that holds an optical element in place, or may be a special element such as a diaphragm placed in the optical path to limit the light admitted by the system. In general, these structures are called stops, and the aperture stop is the stop that primarily determines the ray cone angle and brightness at the image point. In some contexts, especially in photography and astronomy, ''aperture'' refers to the diameter of the aperture stop rather than the physical stop or the opening itself. For example, in a telescope, the apertu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samsung Galaxy
Samsung Galaxy (, stylised as SΛMSUNG Galaxy since 2015 (except Japan where it omits the Samsung branding), previously stylised as Samsung GALAXY; abbreviated as SG) is a series of computing and mobile computing devices that are designed, manufactured and marketed by Samsung Electronics. The product line includes the Samsung Galaxy S series of high-end smartphones, the Samsung Galaxy Tab series of Tablet computer, tablets, the Samsung Galaxy Note series of tablets and phablets with the added functionality of a stylus, the foldable Samsung Galaxy Z series, and smartwatches including the first version of the Samsung Galaxy Gear, with later versions dropping the Galaxy branding, until the release of the Samsung Galaxy Watch in 2018. Samsung Galaxy devices use the Android (operating system), Android operating system produced by Google, with a custom user interface called One UI (with previous versions being known as Samsung Experience and TouchWiz). However, the Samsung Galaxy T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pixel Aspect Ratio
Pixel aspect ratio (often abbreviated PAR) is a mathematical ratio that describes how the width of a pixel in a digital image compares to the height of that pixel. Most digital imaging systems display an image as a grid of tiny, square pixels. However, some imaging systems, especially those that must be compatible with standard-definition television motion pictures, display an image as a grid of rectangular pixels, in which the pixel width and height are different. Pixel aspect ratio describes this difference. Use of pixel aspect ratio mostly involves pictures pertaining to standard-definition television and some other exceptional cases. Most other imaging systems, including those that comply with SMPTE standards and practices, use square pixels. PAR is also known as ''sample aspect ratio'' and abbreviated ''SAR'', though it can be confused with storage aspect ratio. Introduction The ratio of the width to the height of an image is known as the aspect ratio, or more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AMOLED
AMOLED (active-matrix organic light-emitting diode, ) is a type of OLED display device technology. OLED describes a specific type of thin-film-display technology in which organic compounds form the electroluminescent material, and active matrix refers to the technology behind the addressing of pixels. Since 2007, AMOLED technology has been used in mobile phones, media players, TVs and digital cameras, and it has continued to make progress toward low-power, low-cost, high resolution and large size (for example, 88-inch and 8K resolution) applications. Design An AMOLED display consists of an active matrix of OLED pixels generating light (luminescence) upon electrical activation that have been deposited or integrated onto a thin-film transistor (TFT) array, which functions as a series of switches to control the current flowing to each individual pixel. Typically, this continuous current flow is controlled by at least two TFTs at each pixel (to trigger the luminescence), wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smartphone
A smartphone is a portable computer device that combines mobile telephone and computing functions into one unit. They are distinguished from feature phones by their stronger hardware capabilities and extensive mobile operating systems, which facilitate wider software, internet (including web browsing over mobile broadband), and multimedia functionality (including music, video, cameras, and gaming), alongside core phone functions such as voice calls and text messaging. Smartphones typically contain a number of metal–oxide–semiconductor (MOS) integrated circuit (IC) chips, include various sensors that can be leveraged by pre-included and third-party software (such as a magnetometer, proximity sensors, barometer, gyroscope, accelerometer and more), and support wireless communications protocols (such as Bluetooth, Wi-Fi, or satellite navigation). Early smartphones were marketed primarily towards the enterprise market, attempting to bridge the functionality ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
