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Success Stories
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Term
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Description
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Jamming
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The typically intentional or malicious interference with
another radio signal.
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Jbits
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A Java based file format for configuring Xilinx FPGAs used
in IRL.
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Jini
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Jini network technology provides simple mechanisms which
enable devices to plug together to form an impromptu community
-- a community put together without any planning, installation,
or human intervention. Each device provides services that
other devices in the community may use. These devices provide
their own interfaces, which ensures reliability and compatibility.
Jini technology uses a lookup service with which devices
and services register. When a device plugs in, it goes through
an add-in protocol, called discovery and join-in. The device
first locates the lookup service (discovery) and then uploads
an object that implements all of its services' interfaces
(join).
To use a service, a person or a program locates it using
the lookup service. The service's object is copied from the
lookup service to the requesting device where it will be used.
The lookup service acts as an intermediary to connect a client
looking for a service with that service. Once the connection
is made, the lookup service is not I
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Jitter
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A type of analog communication line distortion caused by
abrupt, spurious signal variation from a reference timing
position, and capable of causing data transmission errors,
particularly at high speeds. The variation can be in amplitude,
time, frequency, or phase.
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JPEG (Joint Photographic Experts Group)
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The international consortium of hardware, software, and publishing
interests who, under the auspices of the ISO, has defined
a universal standard for digital compression and decompression
of still images for use in computer systems (commonly called
"JPEG" or "JPEG-Standard") JPEG compresses at about a 20:1
ratio before visible image degradation occurs.
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JTAG
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Acronym for Joint Test Action Group. Often referred to as
IEEE standard 1149.1. IEEE committee focused on chip interface
for testing and programming. Xilinx is a member of this committee.
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