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HTC U12
The HTC U12+ is an Android (operating system), Android smartphone manufactured and sold by HTC as part of the HTC U series. It was announced on 23 May 2018 and succeeds the HTC U11 and HTC U11#HTC U11+, HTC U11+ smartphones. Specifications Hardware The HTC U12+ has 6 GB of RAM and runs on a 2.8 GHz Snapdragon 845 System on a chip, SoC, the latest and highest-end chip available from Qualcomm at the time. It comes with the option of 64 or 128 GB of internal Universal Flash Storage, UFS 2.1 storage, and a hybrid dual SIM system in which one slot can also be used for microSD storage of up to 2 TB. The screen is a 6-inch Super LCD 6 panel at Quad HD+ (2880×1440) resolution (573 Pixel density, ppi) with an 18:9 screen ration, covered with Gorilla Glass 5. The device is Quick Charge 4.0-compatible, and comes with a Quick Charge 3.0 charger. HTC's BoomSound dual-speaker technology features on the device; it uses the earpiece as a tweeter and a bottom-firing speaker as a subwoofer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HTC U Series
The HTC U series is a line of upper mid-range and high-end flagship Android (operating system), Android smartphones developed and produced by HTC. The first phones in the series, the HTC U Play and the HTC U Ultra, were announced in January 2017. The HTC U series is the successor of the HTC One series. Phones 2017 lineup HTC U Play The HTC U Play, an upper mid-range phone, was announced along with the HTC U Ultra on January 12, 2017. * Display: 5.2" IPS S-LCD display with 1080x1920 pixel resolution * Processor: Mediatek Helio P10 * Storage: 32 or 64 GB (expandable) * RAM: 3 or 4 GB * Battery: 2500 mAH HTC U Ultra The HTC U Ultra, a high-end phablet, was announced on January 12, 2017, on the same day as the HTC U Play. Like the LG V10 and LG V20, the HTC U Ultra features a secondary display above the main screen. * Display: 5.7" IPS LCD display with 1440x2560 pixel resolution (main); 2.0" IPS LCD display with 160x1040 pixel resolution (secondary) * Processor: Qualcom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snapdragon 845
The Qualcomm Snapdragon suite of systems on chips (SoCs) are designed for use in smartphones, tablets, laptops, 2-in-1 PCs, smartwatches, and smartbooks devices. Before Snapdragon SoC made by Qualcomm before it was renamed to Snapdragon. *MSM (Mobile Station Modem) *QSC (Qualcomm Single Chip) Snapdragon S series Snapdragon S1 Snapdragon S2 Snapdragon S3 Snapdragon S4 Snapdragon S4 was offered in three models: S4 Play for budget and entry-level devices, S4 Plus for mid-range devices and S4 Pro for high-end devices. It was launched in 2012. The Snapdragon S4 were succeeded by the Snapdragon 200/400 series (S4 Play) and 600/800 series (S4 Plus and S4 Pro). Snapdragon S4 Play Snapdragon S4 Plus Snapdragon S4 Pro and S4 Prime (2012) Snapdragon 2 series The Snapdragon 2 series is the entry-level SoC designed for low-end or ultra-budget smartphones. It replaces the MSM8225 S4 Play model as the lowest-end SoC in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Force Touch
Force Touch is a haptic pressure-sensing technology developed by Apple Inc. that enables trackpads and touchscreens to sense the amount of force being applied to their surfaces. Software that uses Force Touch can distinguish between various levels of force for user interaction purposes. Force Touch was first unveiled on September 9, 2014, during the introduction of Apple Watch. Starting with the Apple Watch, Force Touch has been incorporated into many Apple products, including MacBooks and the Magic Trackpad 2. Older iPhones have a similar technology known as 3D Touch. The technology brings usability enhancements to the software by offering a third dimension to accept input. Users can apply a force on the input surface to interact with the displayed content in a way that a normal touch would not. 3D touch enables software features such as pressing hard to access a shortcut menu for an app, and pressing hard on a website link to show a preview of the web page. 3D Touch ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pixel 2
The Pixel 2 and Pixel 2 XL are a pair of Android (operating system), Android smartphones designed, developed, and marketed by Google as part of the Google Pixel product line. They collectively serve as the successors to the Pixel (1st generation), Pixel and Pixel XL. They were officially announced on October 4, 2017 at the Made by Google event and released in the United States on October 19. They were succeeded by the Pixel 3 and Pixel 3 XL On October 9, 2018. Both models reached their planned End-of-life product, end-of-life date in October 2020; their final security update was released in December 2020. History In early March 2017, Google's Rick Osterloh confirmed that they would bring a "next-gen" Pixel smartphone later that year. He stated it would "stay premium" and that there would be no "cheap Pixel". Google originally intended to use HTC to manufacture both their 2017 flagships, but later shifted to LG to manufacture the bigger Pixel 2 XL. The unreleased device that wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AptX-HD
aptX (''apt'' stands for ''audio processing technology'') is a family of proprietary audio codec compression algorithms owned by Qualcomm, with a heavy emphasis on wireless audio applications. History The original compression algorithm was developed in the 1980s by Dr. Stephen Smyth as part of his Ph.D. research at Queen's University Belfast School of Electronics, Electrical Engineering and Computer Science. Its design is based on time domain ADPCM principles without psychoacoustic auditory masking techniques. The algorithm was then commercialized under the name aptX and first introduced to the commercial market as a semiconductor product, a custom programmed DSP integrated circuit with part name APTX100ED, which was initially adopted by broadcast automation equipment manufacturers who required a means to store CD-quality audio on a computer hard disk drive for automatic playout during a radio show, for example, hence replacing the task of the disc jockey. The company was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Active Noise Control
Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. The concept was first developed in the late 1930s; later developmental work that began in the 1950s eventually resulted in commercial airline headsets with the technology becoming available in the late 1980s. The technology is also used in road vehicles, mobile telephones, earbuds, and headphones. Explanation Sound is a pressure wave, which consists of alternating periods of compression and rarefaction. A noise-cancellation speaker emits a sound wave with the same amplitude but with an inverted phase (also known as antiphase) relative to the original sound. The waves combine to form a new wave, in a process called interference, and effectively cancel each other out – an effect which is called destructive interference. Modern active noise control is gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital-to-analog Converter
In electronics, a digital-to-analog converter (DAC, D/A, D2A, or D-to-A) is a system that converts a digital signal into an analog signal. An analog-to-digital converter (ADC) performs the reverse function. DACs are commonly used in music players to convert digital data streams into analog audio signals. They are also used in televisions and mobile phones to convert digital video data into analog video signals. These two applications use DACs at opposite ends of the frequency/resolution trade-off. The audio DAC is a low-frequency, high-resolution type while the video DAC is a high-frequency low- to medium-resolution type. There are several DAC architectures; the suitability of a DAC for a particular application is determined by figures of merit including: resolution, maximum sampling frequency and others. Digital-to-analog conversion can degrade a signal, so a DAC should be specified that has insignificant errors in terms of the application. Due to the complexity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subwoofer
A subwoofer (or sub) is a loudspeaker designed to reproduce low-pitched audio frequencies, known as bass and sub-bass, that are lower in frequency than those which can be (optimally) generated by a woofer. The typical frequency range that is covered by a subwoofer is about for consumer products, below for professional live sound, and below in THX-certified systems. Thus, one or more subwoofers are important for high-quality sound reproduction as they are responsible for the lowest two to three octaves of the ten octaves that are audible. This very low-frequency (VLF) range reproduces the natural fundamental tones of the bass drum, electric bass, double bass, grand piano, contrabassoon, tuba, in addition to thunder, gunshots, explosions, etc. Subwoofers are never used alone, as they are intended to substitute the VLF sounds of "main" loudspeakers that cover the higher frequency bands. VLF and higher-frequency signals are sent separately to the subwoofer(s) and the mains by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tweeter
A tweeter or treble speaker is a special type of loudspeaker (usually dome, inverse dome or horn-type) that is designed to produce high audio frequencies, typically from 2,000 to 20,000 Hertz, Hz. The name is derived from the high pitched sounds made by some birds (tweets), especially in contrast to the low woofs made by many dogs, after which low-frequency drivers are named (woofers). Operation Nearly all tweeters are electrodynamic drivers using a voice coil suspended within a fixed magnetic field. These designs operate by applying current from the output of an amplifier circuit to a coil of wire called a voice coil. The voice coil produces a varying magnetic field, which works against the fixed magnetic field of a permanent magnet around which the cylindrical voice coil is suspended, forcing the voice coil and the diaphragm attached to it to move. This mechanical movement resembles the waveform of the electronic signal supplied from the amplifier's output to the voice co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quick Charge
Quick Charge (QC) is a proprietary charge controller#Charging protocols, battery charging protocol developed by Qualcomm, used for managing power delivered over USB, mainly by communicating to the power supply and negotiating a voltage. Quick Charge is supported by devices such as mobile phones which run on Qualcomm system-on-chip (SoCs), and by some chargers; both device and charger must support QC, otherwise QC charging is not attained. It charges batteries in devices faster than standard USB allows by increasing the output voltage supplied by the USB charger, while adopting techniques to prevent the battery damage caused by uncontrolled fast charging and buck converter, regulating the incoming voltage internally. Many chargers supporting Quick Charge 2.0 and later are wall adaptors, but it is implemented on some automobile auxiliary power outlet, in-car chargers, and some battery charger#Power bank, power banks use it to both receive and deliver charge. Quick Charge is also us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pixel Density
Pixels per inch (ppi) and pixels per centimetre (ppcm or pixels/cm) are measurements of the pixel density of an electronic image device, such as a computer monitor or television display, or image digitizing device such as a camera or image scanner. Horizontal and vertical density are usually the same, as most devices have square pixels, but differ on devices that have non-square pixels. Pixel density is not the same as where the former describes the amount of detail on a physical surface or device, the latter describes the amount of pixel information regardless of its scale. Considered in another way, a pixel has no inherent size or unit (a pixel is actually a sample), but when it is printed, displayed, or scanned, then the pixel has both a physical size (dimension) and a pixel density (ppi). Basic principles Since most digital hardware devices use dots or pixels, the size of the media (in inches) and the number of pixels (or dots) are directly related by the 'pixels per inch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quad HD+
QUaD, an acronym for QUEST at DASI, was a ground-based cosmic microwave background (CMB) polarization experiment at the South Pole. QUEST (Q and U Extragalactic Sub-mm Telescope) was the original name attributed to the bolometer detector instrument, while DASI is a famous CMB interferometry experiment credited with the first detection of CMB polarization. QUaD used the existing DASI mechanical infrastructure but replaced the DASI interferometric array with a bolometer detector at the end of a cassegrain optical system. The mount has housed the Keck Array since 2011. See also * Cosmic microwave background radiation * Cosmic microwave background experiments This list is a compilation of experiments measuring the cosmic microwave background radiation, cosmic microwave background (CMB) radiation anisotropies and polarization since the first detection of the CMB by Arno Allan Penzias, Penzias and Rob ... References External links * http://www.stanford.edu/~schurch/quad.h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
