- 行业: 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.
Video telepresence is a form of immersive video communication that creates the impression of being in the same room as other conference participants. These conference participants appear as life-size individuals on large plasma, LCD, light-emitting diode or projection screens. Multiple cameras and microphones pick up individuals or pairs of individuals, so that all audiovisual information becomes directional, with eye contact and spatial sound aligned with the location of the person speaking.
Industry:Technology
Video on demand (VOD) is a generic term covering several areas. It includes all video content requested on-demand by users. This could be premium movies or libraries of TV shows, sporting events or concerts. It could also include user-created video content. In addition, some IPTV operators are starting to offer the ability to see all the TV programs aired on their multichannel pay-TV channels in the previous 24 or 48 hours on demand. This video content is held in a constantly updated library hosted by their network.
VOD services are sold either on a pay-per-view basis or as monthly subscriptions. Bundling in flat-rate packages with multichannel subscriptions is also common. Gartner’s definition of VOD excludes free VOD downloads, which may be used to increase customers’ awareness of these services or to generate advertising revenue.
Industry:Technology
A very small aperture terminal (VSAT) is a small-sized earth station used in the transmit/receive of data, voice and video signals over a satellite communication network, excluding broadcast television. A VSAT consists of two parts: a transceiver placed outdoors in direct line of sight to the satellite, and a device that is placed indoors to interface the transceiver with the end user’s communications device, such as a PC. The transceiver receives or sends a signal to a satellite transponder in the sky. The satellite sends and receives signals from a ground station computer that acts as a hub for the system. Each end user is interconnected with the hub station via the satellite, forming a star topology. The hub controls the entire operation of the network. For one end user to communicate with another, each transmission must first go to the hub station, which then retransmits it via the satellite to the other end user’s VSAT. VSAT data throughput speeds have increased significantly throughout the years and now can provide multimegabit service in downstream and upstream. Antenna/dish sizes usually range from 1.2 meters to approximately 3 meters in diameter. Generally, these systems operate in Ku-band and C-band frequencies, but with the launch of Ka-band satellites by a number of operators in North America and Asia/Pacific, and with newer Ka-band satellites planned for Europe, high-bandwidth, bidirectional VSAT services for enterprise, government and other users will increasingly migrate to these satellites.
Industry:Technology
Very large-scale integration (VLSI) is a technology that makes it possible to place the equivalent of between 100,000 and 1 million transistors on a chip.
Industry:Technology
Very high-speed digital subscriber lines (VDSL) are extremely high-speed digital subscriber line (DSL) connections over short distances. VDSL offers speeds from 13 Mbps to more than 100 Mbps over distances of between 1,000 and 4,500 feet — the shorter the distance, the higher the speed. VDSL comes in both asymmetrical and symmetrical flavors and in different configurations. Most advanced VDSL deployments use VDSL2, which promises up to 100 Mbps bandwidth. We account for all VDSL technologies together in our generic VDSL (VDSLx) category.
Industry:Technology
Vendor-neutral describes a state in which no one vendor can control the definition, revision or distribution of a specification. Vendor-neutral specifications encourage the development of competing yet compatible implementations, freeing the purchaser to choose from a multitude of vendors without suffering a loss of functionality. Vendor-neutral specifications must be comprehensive, consistent, and either publicly available or licensed at a nominal fee. Additionally, they must be defined by a multilateral association that is representative of a broad cross-section of the computer industry, open to new members, publishes the rules of membership and operates according to democratic principles. Preferably, a vendor-neutral specification is supplemented with at least one reference implementation. This reference would be available in a format that allows re-creation — that format would be source code for software implementations — and a set of conformance tests that sufficiently ensure the implementation’s integrity under all reasonable conditions of projected use.
Industry:Technology
Vendor risk management (VRM) is the process of ensuring that the use of service providers and IT suppliers does not create an unacceptable potential for business disruption or a negative impact on business performance. VRM technology supports enterprises that must assess, monitor and manage their risk exposure from third-party suppliers (TPSs) that provide IT products and services, or that have access to enterprise information.
Industry:Technology
Vendor revenue is the revenue earned by technology providers for the sale of printer, copier and MFP hardware (that is, excluding supplies). It would be calculated by end-user spending minus channel margins.
Industry:Technology
Vendor management is a discipline that enables organizations to control costs, drive service excellence and mitigate risks to gain increased value from their vendors throughout the deal life cycle.
Gartner’s vendor management research helps clients select the right vendors; categorize vendors to ensure the right contract, metrics and relationship; determine the ideal number of vendors; mitigate risk when using vendors; and establish a vendor management organization that best fits the enterprise.
This enables organizations to optimally develop, manage and control vendor contracts, relationships and performance for the efficient delivery of contracted products and services. This can help clients meet business objectives, minimize potential business disruption, avoid deal and delivery failure, and ensure more-sustainable multisourcing, while driving the most value from their vendors.
View Free Webinar: Top 10 Mobile Apps Changing the World SummaryArticle NameVendor ManagementGartner, Inc.Gartner, Inc.DescriptionVendor management is a discipline that enables organizations to control costs, drive service excellence and mitigate risks to gain increased value from their vendors throughout the deal life cycle.
Industry:Technology
A vendor is the last entity in the chain that brands a product and sells it directly to end users or through a channel. A vendor may design and manufacture its own products, assemble complete systems from components produced by others, or procure products from an original equipment or contract manufacturer. A vendor may also provide services, maintenance or nonmaintenance for its own products or for other vendors’ products and may also provide services for IT technologies.
Industry:Technology
