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Term Description I/O Short for Input/Output, and pronounced eye-oh. I/O refers to any operation, program, or device whose purpose is to enter data into a computer or to extract data from a computer. IAV (HAVi) IAV is an acronym for Intermediate AV (device). This would be a low-cost device with more limited functionality than an FAV. An IAV would have vendor-specific functionality built into it, but would not have the capability of allowing additional, or upgraded JAVA applications to be installed on it by the user. However, the ability to upgrade such a device would still be possible, if the vendor provided a means to install such applications or DCMs. These applications or DCMs would most likely be platform specific, so they would have to come from that specific vendor. IC Integrated Circuit IDCT Inverse Discrete Cosine Transform; used to recover data sequence from the DCT transformed sequence. IDL Inter-chip Digital Link, a five-wire TDM interface defined by Motorola. IDSL ISDN Digital Subscriber Loop (128kbps). IEC Abbreviation for International Electrotechnical Commission. IEEE Acronym for Institute of Electrical and Electronics Engineers. A professional organization that sets standards. IEEE 1394 Formal name for FireWire. IEEE 1394 link layer Link Layer provides data packet delivery service for the two types of packet delivery: asynchronous and Isochronous. As mentioned before, asynchronous is the conventional transmit-acknowledgment protocol and Isochronous is a real-time guaranteed-bandwidth protocol for just-in-time delivery of information. IEEE 1394 Transaction layer The Transaction Layer supports the asynchronous protocol write, read, and lock commands. A write sends data from the originator to the receiver and a read returns the data to the originator. Lock combines the function of the write and read commands by producing a round trip routing of data between sender and receiver including processing by the receiver. IEEE 1394, 1394, FireWire, iLink IEEE-1394 (also refers to as i.LINK or FireWire) is a specification for data transfer between devices. It is the underlying network technology for the HAVi protocols as well as for the transport of the real-time AV streams. Serial protocol that runs at speeds ranging from 100 to 400 megabits per second, depending upon the implementation. Devices that are prime candidates for IEEE 1394 include digital camcorders and VCRs, digital audio amplifiers, and video teleconferencing. IEEE 1394b IEEE 1394 (FireWire or iLink) is a hardware and software standard for transporting data at 100, 200, 400, or 800 megabits per second (Mbps). IEEE 1394b will be capable of transporting data at 3.2 Gbps in 100 meter range. IEEE 802.1 High Level Interface (HILI) IEEE 802.10 Standards for Interoperable LAN Security (SILS) IEEE 802 The IEEE 802 standards are a set of standards developed by the IEEE to define methods of access and control on local area networks. IEEE 802.11. The IEEE 802 standards are a set of standards developed by the IEEE to define methods of access and control on local area networks. IEEE 802.11 Wireless LAN (WLAN). The 802.11 committee standard for 1 - 40 Mbps wireless LANs. The standard has a single MAC layer for the following physical-layer technologies: Frequency Hopping Spread Spectrum, Direct Sequence Spread Spectrum, Orthogonal Frequency Division Multiplexing (OFDM) and Infrared. IEEE 802.11 a Wireless LAN standard for the 5GHz spectrum, based on OFDM, proposed by IEEE IEEE 802.11 b Wireless LAN standard for the 2.4GHz spectrum, based on Ethernet, proposed by IEEE. IEEE 802.12 Demand Priority IEEE 802.14 Cable-TV Based Broadband Communication Network IEEE 802.15 Wireless Personal Area Network (WPAN) IEEE 802.16 Broadband Wireless Access IEEE 802.2 Logical Link Control (LLC) IEEE 802.3 CSMA / CD IEEE 802.4 Token Bus IEEE 802.6 Metropolitan Area Network (MAN) IEEE 802.7 Broadband TAG IEEE 802.8 Fiber Optic TAG IEEE 802.9 Integrated Services LAN (ISLAN) Incremental Synthesis Software feature that allows designers to safely make small changes without impacting the rest of the design. Information Appliances, Internet Appliances An emerging category of digital consumer electronics that provide the consumer with a low-cost, easy-to-use, instant-on device, lightweight, reliable, special-purpose access to the features and benefits of the Internet Examples: PCs, PDAs, servers, webphones, set-top boxes, peripherals, printers, scanners, digital cameras, etc. Ink Jet Printer A printer technology where ink is splashed onto the printer paper to form an image or character. Inquiry (Bluetooth) Inquiry is how a Bluetooth device learns about other devices that are within its range. During the Inquiry process device A continuously broadcasts the Page command using the reserved Inquiry ID which identifies it as as a Page Inquiry. These broadcasts are spread across a standard pattern of 32 Standby radio frequencies which all devices in Standby mode monitor on an occasional basis. Over a duration of some seconds it is certain that every Standby device within range will have received the Inquiry Page even though they are not synchronized in any way. By convention these nodes will respond with a standard FHS packet that provides their unique BT ID and their clock offset. With these parameters the Inquiring node can effect low latency synchronized connections. Instruction Set A basic command. The term instruction is often used to describe the most rudimentary programming commands. For example, a computer's instruction set is the list of all the basic commands in the computer's machine language. Integrated Services Digital Network (ISDN) Series of CCITT recommendations related to the transmission of voices and data down the same line. Intellectual Property (IP) Pre-defined logic function that can be used by designers to speed up the design cycle. Interface An interface is a connection between electronic devices. Examples: SCART, RS250, SCSI Interframe coding In video signal transmission, a way to compress the video signal that concentrates on coding high-detail areas of a picture at the expense of the less detailed areas. Interlaced The pattern described by two separate field scans when they join to form a complete video frame. The two field scans interleave together to form a single, complete frame. Internal 3-state bussing A feature which allows multiple signals to be connected to a single wire. Only 1 signal may be active at a time. Internet The largest network in the world. Being the successor to ARPANET, the Internet includes other large internetworks. The Internet uses the TCP/IP protocol suite and connects universities, government agencies, and individuals around the world. Internet Audio Player A portable music player that plays back compressed music stored in flash memory. Music is downloaded to the audio player from the Internet using a PC with a cable connected to printer port, USB or Bluetooth (that allows the system to exchange music files untethered with the PC). Music sources include CDs and downloading from Internet Internet Screenphones High end desktop telephones with LCD screens that offer Internet access for e-mail message checking and informational services and/or Web browsing. The phones include: base module, voice communications module (corded or cordless handset and/or speakerphone), keypad and screen display. Internet Smart Handheld Devices Vertical application devices that provide direct Internet access capabilities using an add-on or integrated modem. These include PDAs, personal companions, PC companions. Intraframe A lossy way to compress a video signal for transmission in which half the picture information is eliminated by discarding every other frame as it comes from the camera. During playback, each frame remains on the screen twice the normal duration to simulate the standard 30-frames-per-second video rate. IO standards Standardized interfaces making the design of new applications much simpler. IOB Xilinx acronym for I/O block. Architectural block that contains an I/O with additional features such as registers, latches, clock enable and tristate control functions. IOM-2 ISDN Oriented Modular Interface, a TDM interface defined by Infineon. IP Internet Protocol. The protocol in TCP/IP that governs the breakup of data messages into packets, the routing of the packets from sender to destination network and station, and the reassembly of the packets into the original data messages at the destination. A Layer 3 (network layer in the ISO/OSI model) protocol that contains addressing information and some control information that allows packets to be routed. Documented in RFC 791. The Internet standard protocol that defines the Internet datagram as the unit of information passed across the Internet It provides the basis of the Internet connectionless best effort packet delivery service. The Internet protocol suite is often referred to as TCP/IP because IP is one of the two fundamental protocols. IP (Cores) see intellectual property IP address A 32-bit binary number that uniquely identifies a host (computer) connected to the Internet or to other Internet hosts, for the purposes of communication through the transfer of packets. Internet Protocol Address. This is a 32-bit address assigned to host on a TCP/IP Internet The IP address has a host component and a network component. IP capture Xilinx tools that allow designers to convert customer in-house created designs into IP cores that can be used in future designs. Part of the Design Reuse flow. IP center Xilinx web site that centralizes information, data sheets, and updates to Xilinx IPs that are created by Xilinx or AllianceCORE partners. IP multicast The extension of LAN multicasting technology to a TCP/IP network. Hosts send and receive multicast datagrams, the destination fields of which specify IP host group addresses rather than individual IP addresses. A host indicates that it is a member of a group by means of the Internet Group Management Protocol. IP portal Web site that contains centralized information regarding IP, intellectual property. IP telephony The ability to transmit voice using IP (packet-switched) network. IPoA IP over ATM. IPv6 Internet Protocol Version 6 (IPng, IPv6). IPv6 is a new version of the Internet Protocol which is designed to be an evolutionary step from its predecessor, version 4. There are many RFCs defining various portions of the protocol, its auxiliary protocols, and the transition plan from IPv4. The core RFCs are 1883 through 1886. IR, Infrared Infrared. Having a frequency in the electromagnetic spectrum in the range just below that of red light. Objects radiate infrared in proportion to their temperature. Infrared radiation is divided into categories based on wavelength. IRD Abbreviation for Integrated Receiver Decoder. A Set-top Box receiver with a built in descrambler for decoding Pay TV services. IrDA Infrared Data Association. The industry organization of computer, component, and telecommunications vendors who have established the standards for infrared communication between computers and peripheral devices such as printers. IRL Acronym for Internet reconfigurable logic. Ability for Xilinx devices to be reconfigured through web based applications making field updates easier. ISA Industry Standard Architecture. An 8-bit (and later, a 16-bit) expansion bus that provides a buffered interface from devices on expansion cards to the PC internal bus. ISDN Integrated Services Digital Network (ISDN) gives a user up to 56 Kbps of data bandwidth on a phone line that is also used for voice, or up to 144 Kbps if the line is only used for data. ISDN is faster than a 56K dial-up modem but has lost its appeal with the emergence of DSL lines. The growth of ISDN has been flattening within the past few years but it still may be a good solution where cable modem or DSL service is not available. Analysts indicate there are approximately 2 million ISDN lines deployed in the US ISM band Industrial, Scientific, Medical Band. This spectrum is freely available worldwide with only a few basic equipment characteristics regulated (i.e. must be spread spectrum and low power). The major disadvantage of this band, especially for wireless communications, is the great number of incompatible device types that share it. These include cordless phones, microwave ovens, garage door openers, low cost wireless video surveillance systems, and numerous wireless LAN technologies. This means that the ISM band is likely to be fairly noisy and will thus impact data communications performance. ISO International Organization for Standardization ISO/IEC JTC1 SC25 WG1 Informally called HomeGate and is operated by International Standards Organization. It focuses on creating a set of communications protocols for residential gateways. Isochronous Refers to a communication protocol based on time slices rather than handshaking. For example, a process might have 20 percent of total bus bandwidth. During its time slice, the process can stream data. Isochronous data transfer IEEE 1394 supports two types of data transfer. Asynchronous and Isochronous. Isochronous data transfer puts the emphasis on the guaranteed timing of the data, and less emphasis on delivery. Isochronous transfers are always broadcast in a one-to-one or one-to-many fashion. No error correction nor retransmission is available for Isochronous transfers. Up to 80% of the available bus bandwidth can be used for Isochronous transfers. The delegation of bandwidth is tracked by a node on the bus Isochronous channel IDs are transmitted followed by the packet data. The receiver monitors the incoming data's channel ID and accepts only data with the specified ID. ISP Internet Service Provider. A commercial organization that provides Internet access to individuals and organizations. ISP Acronym for In-System Programmable. Ability to program a device on the system board. ITV Interactive Television, based on a Back Channel interactive TV, enables the consumer, e.g. to select his individual TV program at any time or to take part in game shows, although being at home.The acceptance of Interactive TV is presently tested in various pilot runs all over the world.   A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z