- Branche: Consulting
- Number of terms: 1807
- Number of blossaries: 2
- Company Profile:
Gartner delivers technology research to global technology business leaders to make informed decisions on key initiatives.
Blu-ray is an optical disc format like CD and DVD. Blu-ray discs can hold more information than other optical media, because of the blue lasers that the disc drives use. A single Blu-ray disc can hold up to 25GB of data. Dual-layer Blu-ray discs will be able to store 50GB of data — equivalent to four hours of HD content. In 2010, the Blu-ray Disc Association (BDA) announced formal specifications for a new Blu-ray disc XL (BDXL) format that boasts a maximum storage capacity of 128GB.
Industry:Technology
Bluetooth low energy (LE) is a specification adopted by the Bluetooth SIG in April 2009 that enables low-power peripherals with a battery life of months to years to communicate with Bluetooth in handsets or other devices. Bluetooth LE opens up a new range of devices and applications such as on-body medical sensors and sports and fitness equipment. LE arose from a technology called Wibree (owned by Nokia) and was previously called ultra low power (ULP) Bluetooth.
Industry:Technology
During the past 10 years, Bluetooth has become the de facto technology for wireless point-to-point connectivity. Bluetooth 4.0 (BT4.0) is the latest revision that was introduced by the Bluetooth Special Interest Group (BT-SIG) in June 2010. It includes three specifications in one single standard:
Classic Bluetooth: Bluetooth 2.1 + EDR (enhanced data rate).
Bluetooth High Speed (HS): Bluetooth 3.0 + HS.
Bluetooth Low Energy (LE): This is the new technology that is introduced in BT4.0.
Industry:Technology
Over the last decade, Bluetooth has become the de facto technology for wireless point-to-point connectivity. Bluetooth 3.0 and Bluetooth 3.0 + HS (collectively referred to as BT3.0; HS stands for “high speed”) were introduced in 2009. BT3.0 includes all of the functionality of BT2.1 EDR, in addition to the following new features:
Generic test methodology
Enhanced power control
Unicast connectionless data
The HS version adds support for Generic Alternate MAC/PHY and the 802.11 Protocol Adaptation Layer, which increases the speed to 24 Mbps.
Industry:Technology
Bluetooth is a low-power wireless networking technology operating in the 2.4 GHz unlicensed Industrial, Scientific and Medical (ISM) band. There are two classes of Bluetooth device — Class 1 devices have higher output power and a range of about 100 meters, and Class 2 devices have lower power and a range of about 10 meters. Bluetooth enables ad hoc networking of up to eight devices (supporting voice and data). The Bluetooth Special Interest Group (SIG) was founded in 1998 by IBM, Intel, Ericsson, Nokia and Toshiba, and is supported by more than 2,500 organizations. The Bluetooth v.1.0 specification was ratified and published in 1999 and supported data rates of up to 1Mbps. Bluetooth Version 2.1, along with its enhanced data rate (EDR) specification, was ratified in March 2007, supporting data rates of up to 3 Mbps, and simplified “pairing” — the process used for securely linking one Bluetooth device to another. It also reduced power consumption, doubling the battery life of headsets and other mobile devices for which the Bluetooth radio consumes a large percentage of the power budget. Version 3.0 (“Seattle”) was adopted by the SIG in April 2009, and the specification included Wi-Fi as an alternative transport layer for large volumes of data, supporting data rates of up to 24 Mbps. The SIG also adopted “Bluetooth low energy,” a new ultra-low-power variant, previously referred to as Ultra Low Power (ULP) Bluetooth and Wibree.
Industry:Technology
Blogging platforms are broadcast-style communications systems that enable authors to publish articles, opinions or product reviews (known as posts), which can be delivered through stand-alone websites, email, feed syndications systems and social networks. Blogging platforms also enable direct reader participation with the host blogger or with other blog participants by enabling user comments.
Industry:Technology
In data communications testing, block error rate is defined as the ratio between the total number of blocks transmitted in a given message and the number of blocks in that message received in error; a measure of the quality of a data transmission.
Industry:Technology
The blanking interval is the area in a video signal that falls between frames. It is often used to accommodate data such as synchronizing information.
Industry:Technology
Blades are small form factor servers, housed in a chassis, that provide tightly integrated power, cooling, input/output (I/O) connectivity and management capabilities that enable the easy addition of new components and replacement of failed or outdated technology.
Industry:Technology
A biometric characteristic is a measurable physiological or behavioral trait of a living person, especially one that can be used to determine or verify the identity of a person in access control or criminal forensics. Most real adoption of biometric technologies during the next five years will come from government applications (for example, immigration, social security and surveillance), although corporate adoption will continue to grow slowly until biometric readers are routinely embedded in hardware, such as notebooks. Typical biometric measures include fingerprints, retinal recognition, facial thermograms and voice recognition.
Industry:Technology
