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(computer science)



Officially the IEEE 1394 High Performance Serial Bus (HPSB), FireWire is a high-speed interface developed and promoted mostly by Apple for video transmission. Introduced in 2000, FireWire was added to camcorders and a variety of A/V equipment. Even early iPods could connect via FireWire. However, on modern camcorders, FireWire was replaced with USB, HDMI and other video outputs.

FireWire 400 and 800
FireWire 400 was limited to a distance of 4.5 meters. In 2003, FireWire 800 increased the range to 100 meters and doubled the transfer rate. FireWire supported 63 devices, real-time data transfer, hot swapping and simultaneous multiple speeds. The faster 1600 and 3200 versions never got into production. See PC data buses.


  FW400     400 Mbps

  1394b - 100 METER CABLE LENGTH

  FW800     800 Mbps
  FW1600   1600 Mbps
  FW3200   3200 Mbps

FireWire Sockets and Compatibility
FW800 was backward compatible with FW400. One end of a "bilingual cable" had an FW800 plug, while the other end was FW400. Sony's i.Link was a miniaturized socket that connected to cables with i.Link, FW400 or FW800 at the other end.

Easy to Tell
FireWire sockets were easily distinguished from their USB counterparts.

Dual Mode FW/USB
This external hard drive connected to the computer via FireWire or USB, whichever cable was plugged in.
References in periodicals archive ?
FireWire has proved itself to be extremely popular, and Apple has responded with a terrific new MacBook Pro with 1394b," said James Snider, executive director, 1394 Trade Association.
Motherboards with a single eSATA connection coming out the back of the PC, along side USB and/or 1394b ports, are available today from at least two different motherboard manufacturers.
The SD-Series drives network through IEEE 1394b FireWire ultra high speed digital network.
Texas Instruments expanded its 1394 (Firewire) portfolio with a flexible PCI Express (PCIe) to 1394b open host controller with a packet throughput that exceeds 87 MB/s.
0, 80MBps for Ultra2 SCSI, 100MBps for 1394b, 150MBps SATA Gen1, 160MBps Ultra160 SCSI, 300MBps for SATA Gen2, 320MBps Ultra320 SCSI.
org), the Versatile Home Network, also known as standard 1394b, is designed to let previously incompatible devices share a network.
A fast FireWire IEEE 1394b ($800) interface for a frame rate of up to 15 FPS in full resolution.
0 is slightly faster than the original 1394 specification (480Mbps and 400Mbps, respectively), IEEE 1394b (as the newest version is known) will offer a blistering 3.
As an attribute of the new 1394B technology, many of the Apple patents no longer apply," Teener told the paper.