I

Symbol for one of the NTSC color subcarrier modulation axis

I-frame

Intra-Frame (used in MPEG compression)

IBC

International Broadcasting Convention

ICMP

Internet Control Message Protocol

IDCT

Inverse Discrete Cosine Transform

IDTV

Improved Definition Television

IEC

International Electrotechnical Commission

IIR

Infinite Impulse Response

I/O

Input/Output

IPP

In-Point Packet

IRE

Institute of Radio Engineers (a measure of analog video level)

ISDN

Integrated Services Digital Network

ISO

International Standards Organization

ITC

Independent Television Commission

ITS

International Teleproduction Society

ITTF

Information Technology Task Force (ISO)

ITU

International Telecommunications Union