I

IDC -

Inter-device communication mechanism provided by the OS/2 function ATTACHDD DevHelp.
identifier -
(1) A sequence of bits or characters that identifies a program, device, or system to another program, device, or system. (2) In the C language, a sequence of letters, digits, and underscores used to identify a data object or function. (3) See four-character code (FOURCC).
IDOCA -
Integrated Data Object Content Architecture.
image -
An electronic representation of a video still.
image bitsperpel -
Pertaining to the number of colors supported by the current pel format. The currently accepted standard values are those supported by OS/2 bitmaps, for example, 1, 4, 8, or 24 bits per pel. In addition, 12 bits per pel formats are accepted for YUV images (including the 'yuvb' pel format for RDIB files).
image buffer -
A location in memory where video images are stored for later use.
image buffer formats -
The format or representation of data buffers containing video images.
image compression -
The method of compressing video image data to conserve storage space.
image file format -
The format or representation of data files containing video images.
Image Object Content Architecture (IOCA) -
A data format for multimedia products.
image pelformat -
Indicates the color representation that is to be used for images that are captured and saved. This normally includes palettized RGB, true-color RGB, or YUV color formats.
image quality -
Represents the user's or application's subjective evaluation of complexity and quality of the image to be captured or saved. This setting is used to determine specific compression methods to use for saving the image.
implicit event -
An event that all stream handlers always must support, such as end of stream or preroll complete).
in-betweening -
Synonym for tweening.
in frame -
Refers to a subject that is included within the frame. See also frame.
InfoWindow system -
A display system that can combine text, graphics, and video images on a single display. The minimum system configuration is the IBM InfoWindow Color Display, a system unit, a keyboard, and one or two videodisc players.
input locking mask -
A filter, or mask, that controls which areas of the display can display or freeze video.
input/output control (IOCtl) -
A system function that provides a method for an application to send device-specific control commands to a device driver.
installable I/O procedure -
A file format handler that provides functions that operate on the media object of a particular data format. These functions include opening, reading, writing, seeking, and closing elements.
instance -
See node instance. (RTMIDI-specific term)
INT -
Script abbreviation for interior.
Integrated Data Object Control Architecture (IDOCA) -
A data format for multimedia products.
interactive multimedia -
The delivery of information content through combinations of video, computer graphics, sound, and text in a manner that allows the user to interact.
interactive program -
A running program that can receive input from the keyboard or another input device. Contrast with noninteractive program.
interactive videodisc system (IVS) -
A system in which a user can interact with a videodisc display image by entering commands to the computer through a device such as a keyboard or keypad or by touching a touch-sensitive screen at specific points on the display surface.
interlace flicker -
The apparent flicker when one field of an interlaced image contains more light than the other field due to the placement of image details with respect to the separate fields. Two methods used to avoid interlace flicker: limit the vertical resolution on natural images (as opposed to text or graphics); design characters so that each character has an equal number of pels in each field.
interlacing -
In multimedia applications, a characteristic of video image display that results in greater image clarity. In effect, the video image is traced across the screen twice. (The time delay between the two tracings makes this effect undesirable for normal computer-generated graphics.) Synonymous with interleaving.
interleaving -
(1) The simultaneous accessing of two or more bytes or streams of data from distinct storage units. (2) The alternating of two or more operations or functions through the overlapped use of a computer facility. (3) In a duplicator, the process of inserting absorbent sheets between successive sheets of the copy paper to prevent set-off. (T) (4) Synonym for interlacing.
internal I/O procedure -
An I/O procedure that is built in to the MMPM/2 system, including DOS, MEM, BND, and CF IOProcs.
International Organization for Standardization (ISO) -
An organization of national standards bodies from various countries established to promote development of standards to facilitate international exchange of goods and services, and develop cooperation in intellectual, scientific, technological, and economic activity.
IOCtl -
Input/output control.
IOProc -
A file format handler that provides functions that operate on the media object of a particular data format. These processes include opening, reading, writing, seeking, and closing elements of a storage system. There are two classes of I/O procedures: file format and storage system.
iris -
To fade a picture by operating the iris (aperture) on the camera in a certain way; the type of computer image dissolve accomplished by operating the aperture in a certain way.
ISO -
International Organization for Standardization.
ISP -
IBM Signal Processor. An IBM proprietary digital signal processor.
ISPOS -
IBM Signal Processor Operating System.
ISV -
Independent software vendor.
items -
Options, choices or keywords such as one or more of the following options, choices or keywords can or should be specified. Sometimes use of these items can also be exclusive or some items may not be compatible with other items.
IVS -
Interactive videodisc system.

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