.QCF
QuickLogic Path Analyzer's file of path constraints to be
used in the next design iteration by SpDE's Import feature.
.QDF
QuickLogic's textual netlist format file, created by various design entry applications for SpDE's Import QDIF feature.
QDIF
QuickLogic's Data Interchange Format supports open access to the SpDE's framework for additional tools. (SpDE has a single ASCII file format which provides a read/write interface to other systems.) For SpDE to place and route, only the netlist portion of QDIF needs to be created.
.QDS
QuickLogic's Symplify-Lite file. (SpDE.)
.QDV
Random Dot Software's uncompressed graphics data-format for MacOS and DOS/Windows which supports images of 256 colors. Most files have a filename extension of: .QDV.
.QEQ
SCS's file of QuickBoolean Equations. (There must be a related .SYM symbol file.)
.QRP
SCS NetLister's file of QuickBoolean Errors and Warnings.
QuickDraw
Part of the MAC-OS (in ROM) that draws text and graphics onscreen. It also supports screen image-drawing by printers. Printers without Adobe PostScript may rely on the MacOS to process the a page before it is sent tot the printer for printing. QuickDraw may have problems reproducing graphics created by a PostScript drawing program. (Diagnal lines and circles may have jagged edges.) Such graphics should be printed by a printer with PostScript. 32-bit QuickDraw is in the ROMs of Macs shipped with System 7.1 or a later version of MAC-OS. Its alpha-channel supports the creation of masks behind seamlessly superimposed images. This "compositing" of indivicually rendered objects with a background image also reduces the time required to rendering the picture. Alpha-channel support is also importan if renderings are to be transferred to a videotape or combined with photos using an image processor such as Adobe's Photoshop.
QuickDraw GX™ (a document distributed with System 7.5) provides a variety of useful print-enhancement capabilities of particular use when printing fonts. With it, for example, you can print watermarks in the background on specific pages of a document using the QuickDraw GX print extension by Peirce Software, inc. QuickDraw GX should be matched with the LaserWriter 8.2 driver when printing large fonts. If not, the system may crash rather than displaying the "out of memory" message applicable to earlier versions of QuickDraw. QuickDraw 3D™, provides fast 3-dimentional wire-frame and shaded rendering and moving such 3-D data between applications or storage in the Scrapbook&emdash;without changes to models, textures and light sources. File Type Code is: 3DMF.
QuickTake™
MacOS graphic data-format developed for the Mac version of the QuickTake 100 camera. Supports 24-bit color pictures and the storing of thirty-two digital images at 320 (h) by 240 (v) pixels or eight pictures at 640 (h) by 480 (v) pixels (which can be stored in 1 Mbyte of flash RAM for a year). It permits saving images in TIFF, PICT and JPEG-compressed PICT formats. Compressed images are decompressed by QuickTime™.
QuickTime™ Movies and Stills
For MacOS and Windows. Both Movies and Stills data-formats let applications use multiple audio and video data compression schemes. QuickTime 2.0 supports MPEG and interactive television with a data throughput rate of 3MB per second. It supports a display rate of up to 60 frames per second (fps). On screen, 30 fps can be displayed in a window of 320-by-240 pixels (horizontal by vertical), or 15 fps in a 640-by-480 window. Both formats support 2, 4, 16, 256, 32768, and 17 million colors, (up to 24 bits per pixel). QuickTime Movie files have a Type Code of: MooV. Although you do not interact directly with the QuickTime extension, it must be installed prior to using an application to perform digital nonlinear editing and digital video effects (DVEs).
A nonlinear editor, such as Adobe's Premiere, arranges video and audio clips along a timeline. You can adjust the length of each clip to the frame, alter audio and video transitions and print (save) the results to videotape or CD-Recorder.
QuickTime plays back a frame of video as close as possible to its correct time&endash;even on slow computers. It compensates, for example by playing back every 5th or 10th, or 15th frame while maintaining the video's overall pacing and keeps sound synchronized with the visuals.
To set the duration of a movie in seconds, the number of frames in the movie are related to a variable time-units-per-second calculation. For example, in a conversion application, if a 600 time-unit scale is stipulated, each time unit is 1/600th of a second; i.e., 600 units pass per second. This permits the previewing of an individual frame by its relative (time-unit) place in time; as well as by stepping to a specific "interesting" frame (an I-frame). Compressed still photos are supported by the QuickTime Stills format. File Type Code is: PIQT.
Windows applications can use compressed audio and video data resources developed on a MacOS under QuickTime. A version of QuickTime permits Windows-developed resources to be ported to a MAC. QuickTime Media Layer (QTML) architecture is a collection of multimedia technologies that have a single code base. It includes QuickTime, QuickDraw 3D, QuickTime VR, speech technologies, QuickTime Conferencing, Game Sprockets, HyperCard (which can be used as a cross-platform authoring and playback tool), AppleScript and Apple Media Tool.
.QXP
This extension is used to identify documents created by QuarkXPress.
References are samples only. Each one is presented in greater detail in the Technical Research Assistant 2000
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