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

Impulse response
A type of interactive ad. Viewers can interact with the brand while remaining in the broadcast stream.

Infrared
The most basic means of enabling wireless data transfer, which only works with two devices in close proximity.

Intelligent Digital Servo
Intelligent Digital servo system reduces errors caused by dust etc. This system uses a microcomputer to monitor the signal, adjusting pickup tracking and focus, as well as spindle motor speed, to compensate for any problems.

Interactive advertising
Enables the viewer to respond to an ad by pressing the red button and find information that cannot be easily transmitted via a traditional 30-second linear TV ad.

Internet
The Internet is a global network of computers with roughly 500 million users, all over the world. Anyone can join this network. From your computer you can send and receive information anywhere in the world - all at the cost of a local phone call, 24 hours a day. As people gradually learn more and more about how to use this technology, the Internet is transforming whole industries and creating new ones from scratch.

Intranet
An intranet is a 'private internet', not necessarily linked to the Internet itself, that can provide a powerful means of communication within a company or a group of trading partners. If it is linked to the larger Internet, it will be via secure 'firewalls' to protect your private information. An intranet can help a business, which has several different kinds of computer - Windows or DOS PCs, Macintosh computers, Unix workstations - which need to talk to one another. Internet standards are designed to allow different computers and network types to communicate, so an intranet can remove many potential technical headaches.

Interoperable
A term used to refer to content - tones, games and other applications - which can work on any device. When used - most commonly as the noun 'interoperability' - it generally refers to handsets, rather than networks.

Interpolation
Some cameras and image-editing software can increase the size of a digital image by adding extra Pixels in between the original ones. They take an average of the pixels around the new one and attempt to match the colour and brightness to create a seamless image. Some systems give better results than others.

IP Address
An IP Address is a 32 bit number which identifies each sender or receiver of information that is sent across the Internet. When you send an email, your IP address is included in the message.

iPod
Apple Computer's portable digital music player. Plays AAC and MP3 formatted music.