QAM abbr Quadrature Amplitude Modulation

CIMM DEFINITION – A method of modulating digital signals onto a radio-frequency carrier signal involving both amplitude and phase coding. A modulation scheme used by telecommunications providers. More advanced modulation offers increased capacity (e.g., 256 QAM offers greater capacity/transmission speeds than 64 QAM). (Source: Definition currently under review by CableLabs)

2: The format by which digital cable channels are encoded and transmitted via cable television providers. QAM tuners can be likened to the cable equivalent of an ATSC tuner which is required to receive over-the-air (OTA) digital channels broadcast by local television stations; many new cable-ready digital televisions support both of these standards. (Source: Wikipedia)

QAM Tuner

See also: Bandwidth Optimization, Switched Digital Video

CIMM DEFINITION: A device in some digital televisions or other devices that enables direct reception of any unscrambled digital cable channels with the use of a Set-Top Box. QAM stands for quadrature amplitude modulation, the format by which digital cable channels are encoded and transmitted via cable television providers. QAM that uses 6 MHz bandwidth carries 38.47 Mbp/s @256QAM (Source: Wikipedia)

Qip Boxes

See also: QAM, Internet Protocol

CIMM DEFINITION: A hybrid Set-Top Box from Motorola that offers QAM and IP at the same time and connects through the internet.

QR Codes abbr Quick Response Codes

See also: Bar Code, Google Goggles

CIMM DEFINITION: A two-dimensional matrix bar code that is used to identify products. It can store up to 4,296 alphanumeric or 7,089 numeric characters. Depending on the level of error correction applied, it can restore from seven to 30% of the missing data. (Source:

Note – Created by Japanese Denso Wave, Inc. and standardized by ISO, Japanese Industrial Standard (JIS), JEIDA and AIM, QR codes are increasingly used to identify the URL of a company’s Web site so that mobile phone users can photograph the code and retrieve information about the organization. Some companies have created billboard-sized QR codes for this purpose. To promote the use of its Android phone visual search application, in 2009, Google sent more than 100,000 custom-coded QR codes to U.S. establishments. It suggested they place the code in a prominent location for “mobile tagging.”  (Source:

Quality Discrimination

See also: Versioning

CIMM DEFINITION: The process by which consumers self direct themselves into categories based on preferences or behaviors. For example, consumers who are willing to pay more for a product versus those who are more price conscious.


CIMM DEFINITION: A request for information, usually to a search engine. (Source: IAB)