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| | [No title] |
 | | First, some background into the architecture of frame buffers is given, and the computational problem of finding the optimal color map for an image is defined. | | | These algorithms are used to compute the color map for low-depth frame buffers in order to allow high-quality static images to be displayed. | | | His method was to approximate the probability density of an analog signal with a gaussian distribution, find the optimal quantizer for the gaussian, and use that quantizer on his signal. |
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http://www.cs.cmu.edu/~ph/ciq_thesis
(6590 words)
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| | AIXwindows Programming Guide - Appendix E. The X Virtual Frame Buffer |
| | The frame buffer is stored in system memory and all graphics processing (lines, polygons, text, and so on) is done in the software using the system CPU. | | | This chapter discusses the X Virtual Frame Buffer, an AIX feature that allows an application to render into the main memory of the computer instead of the hardware graphics adapter. | | | This situation is a good solution for rendering server environments, where the added expense of a physical graphics adapter and display are not required. |
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http://publibn.boulder.ibm.com/doc_link/en_US/a_doc_lib/aixprggd/aixwnpgd/xvfb.htm
(2575 words)
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| | Frame Buffer FAQ. |
| | The frame buffer device drivers and interfaces are considered proprietary and are not publicly documented. | | | However the Z buffer memory cannot be combined in this way, which is why you can't have double buffering at higher resolutions. | | | May also be a symlink to a more sophisticated device that is masquerading as a cgthree for backward compatibility. |
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http://www.sunhelp.org/faq/FrameBuffer.html
(13144 words)
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| | Project I: Buffer Manager, COSC 6421, Fall 2002, |
| | he buffer pool is a collection of frames (page-sized sequence of main memory bytes) that is managed by the buffer manager. | | | The hash table should be implemented to reside entirely in main memory, using an array of pointers to lists of frame number> pairs. | | | A simple hash table should be used to determine out what frame a given disk page occupies. |
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http://www.cs.yorku.ca/~jarek/courses/6421/projects/BufMgr.html
(1391 words)
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| | [No title] |
| | In RGBA mode with fixed-point frame buffers, the value is multiplied by the fragment's alpha (A) value to yield a final alpha value. | | | So if floating-point color buffers were provided, the multiple samples are filtered down to a single result value, most likely by computing a per-component average value. | | | In unextended OpenGL, most computations dealing with color or depth buffers are typically constrained to operate on values in the range [0,1]. |
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http://oss.sgi.com/projects/ogl-sample/registry/NV/float_buffer.txt
(5043 words)
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| | frame - a Whatis.com definition |
| | 5) In artificial intelligence (AI) applications, a frame is a set of data with information about a particular object, process, or image. | | | This system compares the frame of data for a potential user with the frames in its database of authorized users. | | | In fact, a frame relay frame typically carries data that has been framed by an earlier protocol program. |
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http://whatis.techtarget.com/definition/0,289893,sid9_gci212152,00.html
(312 words)
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| | Kernel 2.2's Frame-buffer LG #36 |
| | It represents the frame buffer of some video hardware and allows application software to access the graphics hardware through a well-defined interface, so the software doesn't need to know anything about the low-level (hardware register) stuff. | | | This small program (written by Geert Uytterhoeven and Roman Zippel) is used to change or query the current frame buffer mode. | | | Some combinations of X servers and video cards are known to have problems, especially when switching back and forth from X to a virtual console. |
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http://linuxgazette.net/issue36/ayers.html
(1038 words)
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| | HP workstations - MCAD - Dassault Systemes - ENOVIA 3DCom and X Virtual Frame Buffer on HP-UX |
| | The X Virtual Frame Buffer is an X server that renders to virtual memory rather than to a graphics display device. | | | While the traditional (video) X server requires a graphics display device to be present, the Xvfb server performs all its rendering in software and, thus, can run on a computer with or without a graphics display device. | | | This option specifies the directory in which the memory mapped files containing the frame buffer memory should be created. |
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http://www.hp.com/workstations/segments/mcad/dassault/plmcc/xvfb_3cdcom.html
(1296 words)
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| | Frame Buffer History Lesson. |
| | However, there is currently no software supplied by Sun which uses this feature. | | | The TAAC-1 will work with the CG3, CG4, CG6 or CG5 ONLY for single monitor configurations (that is, when TAAC-1 video appears in a Sun window). | | | Not a current project, being considered pending program win. |
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http://www.sunhelp.org/faq/FrameBufferHistory.html
(1688 words)
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| | The OpenGL Frame Buffer |
| | The color depth settings and the depth buffer setting use a convention that is based on a minimum requirement scheme as opposed to a preferred setting scheme. | | | The nested config element has a direct correspondence to the way that the platform-specific OpenGL window API works, so familiarity with WGL or GLX is helpful when understanding what values to use for the frame buffer settings. | | | Depending on the available graphics hardware, the maximum number of bits available for the depth buffer varies. |
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http://www.infiscape.com/~patrick/vrjuggler-config/2.0a4/configuring_vr_juggler/ch03s04.html
(641 words)
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| | Matlab Investigation of MCP |
| | Since same frames are being selected, the error images should be nearly zero, meaning the error should only be equal to the quantization noise from lossy DCT compression of the previously reconstructed frame. | | | The sum of absolute differences (SAD) was computed for each shift, and the minumim SAD was used to select each block's values for d | | | Error shown with mesh plots for comparison of magnitude. |
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http://www.stanford.edu/class/ee368b/Projects/jcsabat/MCPPerf.html
(1539 words)
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| | frame buffer - definition of frame buffer by the Free Online Dictionary, Thesaurus and Encyclopedia. |
| | buffer storage, buffer store, buffer - (computer science) a part of RAM used for temporary storage of data that is waiting to be sent to a device; used to compensate for differences in the rate of flow of data between components of a computer system | | | frame buffer - (computer science) a buffer that stores the contents of an image pixel by pixel | | | This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. |
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http://www.thefreedictionary.com/frame+buffer
(142 words)
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| | US-CERT Vulnerability Note VU#412115 |
| | Depending upon the implementation of an affected device driver, the leaked information may originate from dynamic kernel memory, from static system memory allocated to the device driver, or from a hardware buffer located on the network interface card. | | | Researchers from @Stake have discovered that, contrary to the recommendations of RFC1042, many Ethernet device drivers fail to pad frames with null bytes. | | | For IP datagrams, RFC1042 specifies that "the data field should be padded (with octets of zero) to meet the IEEE 802 minimum frame size requirements." |
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http://www.kb.cert.org/vuls/id/412115
(378 words)
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| | Frame Buffer Library |
| | This "locks" the address of the frame buffer memory, so that it cannot be changed or moved. | | | A good example of this is the start of the frame buffer memory. | | | The frame buffer drivers depend heavily on four data structures. |
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http://www.kernelnewbies.org/documents/kdoc/kernel-api/fbdev.html
(182 words)
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| | Fast CSG Voxelization by Frame Buffer Pixel Mapping (ResearchIndex) |
| | Boolean operations are implicitly computed by a Point-Classification Map, and implemented by a hardware assisted frame buffer pixel map. | | | Using 3D texture mapping and frame buffer pixel operations, the algorithm can interactively generate a binary volume of the CSG model. | | | The result can be used for volume rendering and other applications. |
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http://citeseer.ist.psu.edu/fang00fast.html
(420 words)
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| | Western Research Laboratory - Compaq |
| | This paper describes the architecture of the smart frame buffer chip, sketches several software algorithms for common X11 graphics operations, and compares performance against other popular graphics hardware. | | | We avoid the cost and complexity of typical graphics accelerators by leaving high-level control to the CPU, yet achieve comparable performance. | | | The smart frame buffer is a small cheap gate array that makes full memory bandwidth available to the CPU by expanding 32 data bits into operations upon 32 pixels; pixels can be 8, 16, or 32 bits deep. |
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http://www.research.digital.com/wrl/techreports/abstracts/93.1.html
(117 words)
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| | The Linux BootPrompt-HowTo: Boot Arguments for Video Frame Buffer Drivers |
| | This is similar to how networking is now - the kernel has drivers available for each brand of network card and exports a single network interface so that just one version of a network program (like Netscape) will work for all systems, regardless of the underlying brand of network card. | | | Here it is checked for some generic options before trying to match to a known driver name. | | | A comma separated list of numbers sets the mapping, with the value of option N taken to be the frame buffer device number for console N. 5.2 The `video=scrollback:...' Argument |
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http://www.linuxvalley.it/encyclopedia/ldp/howto/HOWTO/BootPrompt-HOWTO-5.html
(429 words)
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| | The Frame Buffer |
| | For example, if the window is 400×400, word 400 is the leftmost Z-buffer value for the second scan line. | | | gescape for direct user access to the frame buffer, correct access can only be assured by using the | | | The physical frame buffer is addressed as 2048×1024 bytes. |
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http://docs.hp.com/en/B2355-90143/ch04s05.html
(562 words)
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| | [OpenH323]Y, Cr and Cb position in the video frame buffer? |
| | I want to be able to draw anything I > like in the offscreen buffer at any time that's why I'm doing this. | | | ==================================================== On Wed, 14 Aug 2002, Francois Hamel wrote: > Hi > > I can't use the FillRect method because I'm doing some ARGB buffer rendering > internally before outputing the frame. | | | > > On Tue, 13 Aug 2002, Francois Hamel wrote: > > > Hi > > > > I've been trying to implement my own Fake video input device but I can't > > figure out how the data are positionned in the frame for a color format of > > YUV420P. |
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http://www.openh323.org/pipermail/openh323/2002-August/023722.html
(797 words)
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| | OpenGVS Frame Buffer Facility |
| | Hardware frame buffers, sometimes referred to as "heads" or "pipes", are used by the underlying rendering software for physically drawing your images. | | | For example, to add a channels "Hello There" to the frame buffer created above: | | | Channels (which include a user specified scene and camera) must be added to the frame buffer to complete the required OpenGVS software connections. |
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http://www.quantum3d.com/products/opengvs/o_frame.htm
(208 words)
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| | Frame buffer device thinkings... (fwd) |
| | Since hardware acceleration (bitblit) proved to be unnecessary for text consoles on modern hardware, the frame buffer device needs to have less knowledge about the hardware. | | | However, for sane hardware there's no need to put this code in the kernel. | | | Currently a frame buffer device needs code to change the resolution and/or color depth. |
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http://www.ggi-project.org/mailinglist/sep98/609.html
(350 words)
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| | Frame Buffer Device |
| | It represents the "frame buffer" from compatibles VESA boards so that software doesn't need to use any low-level instructions (hardware registers). | | | This documentation was done with the intention to give a quick help to all Linux users which have a graphic card not supported or still in development by Xfree86 Project. | | | As I'd compiled with kernel 2.2.11, at the moment, Frame Buffer Device is still on development so that you should do: |
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http://student.dei.uc.pt/~nemanuel/Documentation/FBD
(368 words)
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| | HFB500 |
| | This 2.5K by 2K frame buffer interconnects with the host computer over the ANSI standard HIPPI interface that permits data transfers up to 200 M-Bytes/sec. | | | The PsiTech HFB520 is an extremely high-resolution image display system optimized for rapid display of images up to 2560 x 2048 x 24 in either landscape or portrait formats. | | | The HFB520 can display true color images at a screen resolution in excess of 5 million pixels. |
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http://www.psitech.com/hfb500.htm
(250 words)
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| | WILDCATII 5000 AGP 4X 32MB Text 32MB Frame Buffer Open GL Processor (3DLabs-01000051XXX) - PriceGrabber.com |
| | With 3Dlab's performance-boosting DirectBurst technology, analog or digital monitor support, and stereo viewing, the Wildcat II 5000 offers the essential professional features CAD professionals, digital content creators, and graphics experts need for precise, interactive designs. | | | Report a pricing error on the WILDCATII 5000 AGP 4X 32MB Text 32MB Frame Buffer Open GL Processor | | | WILDCATII 5000 AGP 4X 32MB Text 32MB Frame Buffer Open GL Processor (3DLabs-01000051XXX) - PriceGrabber.com |
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http://www.pricegrabber.com/search_getprod.php?masterid=616935
(216 words)
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| | LCD Frame Buffer |
| | Instruction transfer is accomplished through use of the external interrupt together with a two-wire handshaking protocol. | | | In order to do this, we built the system externally and used a seperate crystal oscillator at 8-14MHz to drive the microcontroller. | | | Now that we had an interface into the actual buffer and refresh processor, we attempted to add a sinple instruction set that would allow us to perform all the functions we initially planned for. |
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http://instruct1.cit.cornell.edu/courses/ee476/FinalProjects/s1999/joelee
(1396 words)
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| | Framebuffer -- Facts, Info, and Encyclopedia article |
| | The framebuffer is a part of (A tool for driving or forcing something by impact) RAM in a (A machine for performing calculations automatically) computer allocated to hold the graphics information for one frame or picture. | | | This information typically consists of color values for every ((computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot)) pixel (point that can be displayed) on the screen. | | | It was ported to (Click link for more info and facts about x86) x86 and is used to display a logo (often (Semiformal evening dress for men) Tux) above a screen of text. |
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http://www.absoluteastronomy.com/encyclopedia/f/fr/framebuffer.htm
(219 words)
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| | Western Research Laboratory - Compaq |
| | This paper describes the DECStation 3100 color frame buffer hardware, and some of the graphics algorithms used in the X server implementation. | | | The current generation of RISC processors can drive video RAMs at memory bandwidth speed for many 2-dimensional graphics operation, rendering specialized hardware unnecessary. | | | Measured performance numbers are presented and compared to memory bandwidth speed. |
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http://www.research.digital.com/wrl/techreports/abstracts/TN-9.html
(81 words)
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| | What is frame buffer? - A Word Definition From the Webopedia Computer Dictionary |
| | In some instances, however, the video chipset is integrated into the motherboard design, and the frame buffer is stored in general main memory. | | | Typically the frame buffer is stored in the memory chips on the video adapter. | | | EctTelecom.com: Domestic Frame Relay Service - Assists companies select, implement, and support appropriate telecommunications solutions, including frame relay services from tier one carriers. |
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http://www.webopedia.com/TERM/F/frame_buffer.html
(204 words)
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| | Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations |
| | Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link. | | | Energy Citations Database (ECD) Document #6697333 - Multiaccess frame buffer architecture |
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http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=6697333
(93 words)
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| | AverLogic Technologies, Inc. - AL422B, 3M-Bit Frame Buffer |
| | Current sources of similar memory (field memory) in the market provide limited memory size which is only enough for holding a TV field, but not enough for a whole PC video frame which normally contains 640x480 or 720x480 bytes. | | | The AL422B is a First-In-First-Output (FIFO) video frame memory used to buffer audio/video/graphic data for digital processing, timing correction, or format conversion. | | | It is manufactured with state-of-the-art embedded memory technology for applications in TVs, VCRs, scan converters, and digital video systems. |
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http://www.averlogic.com/video_FIFO/422b.html
(206 words)
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| | AverLogic Technologies, Inc. - AL440, 4M-Bit Frame Buffer |
| | The AL440B FIFO memory provides completely independent 8bit input and output ports that can operate at a maximum speed of 80 MHz. | | | The AL440B is a high-performance FIFO (First-In-First-Out) field memory chip designed to buffer audio/video/graphic digital data for a wide range of applications. | | | AverLogic Technologies, Inc. - AL440, 4M-Bit Frame Buffer |
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http://www.averlogic.com/video_FIFO/AL440.html
(455 words)
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| | Graphics patent holder sues Sony, MS, Nintendo The Register |
| | The latter essentially covers representing a dynamic 3D environment and objects on a 2D display, and is the same patent the games publishers have been alleged to have violated. | | | The former is entitled 'Image frame buffer access speedup by providing multiple buffer controllers each containing command FIFO buffers', and is cited in the action against the PC makers. | | | In each case, the plaintiff is seeking a jury trial, and wants it the defendants to cough up legal costs, damages and both pre- and post-judgement interest on the damages. |
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http://www.theregister.co.uk/2004/11/05/graphics_patent_suit_update
(573 words)
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| | US-CERT Vulnerability Note VU#842160 |
| | Publicly available exploit code uses JavaScript to prepare the heap by allocating memory with blocks that consist of NOP slides and shell code. | | | Microsoft Internet Explorer (IE) contains a buffer overflow vulnerability that can be exploited to execute arbitrary code with the privileges of the user running IE. | | | A heap buffer overflow vulnerability exists in the way IE handles the SRC and NAME attributes of HTML elements such as FRAME and IFRAME. |
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http://www.kb.cert.org/vuls/id/842160
(542 words)
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| | Jules Bloomenthal |
| | Bloomenthal, J. Implicit Surfaces, article in Encyclopedia of Computer Science and Technology, Marcel Dekker Inc., NY, 2000. | | | Fish, R. and Bloomenthal, J. Frame Buffer System Selection, University of Utah, 1979. | | | Bloomenthal, J. Calculation of Reference Frames along a Space Curve, Graphics Gems (A. Glassner, ed.), Academic Press, New York, 1990. |
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http://www.unchainedgeometry.com/jbloom/career.html
(618 words)
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| | frame buffer - Glossary - CNET.com |
| | The memory on a graphics card that stores information not being displayed onscreen is called a frame buffer. | | | This memory buffer stores rendered frames offscreen; they are then converted by the RAMDAC and displayed. |
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http://www.cnet.com/Resources/Info/Glossary/Terms/framebuffer.html
(34 words)
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| | App Note Abstract: TMS320C80 Frame Buffer |
| | An in-depth discussion of the hardware interface for the frame buffer card palette, a VRAM overview, and information on the frame timer interrupts is included. | | | The TMS320C80 ('C80) is a 32-bit multiprocessor digital signal processor (DSP) that provides direct support of two independent frame memories through on-chip controllers. | | | This document presents a 4M-byte video random access memory (VRAM) based frame buffer interface to the 'C80 DSP. |
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http://www.ti.com/sc/docs/psheets/abstract/apps/spra156.htm
(84 words)
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| | Frame buffer architectures |
| | Combines bit planes and lookup tables to customize a frame buffer capabilities. |
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http://www.cis.upenn.edu/~hms/cis560/slides/CH3
(12 words)
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| | WEITEK.com - A SBE license demo |
| | In the early 1990s they also introduced the SPARC POWER µP (as in "power-up", and technically referred to as WTL 8601), a pin-compatible version of the SPARC processor. | | | Weitek adaptors were fairly successful in the early days of the 486 market, but fell from use as less expensive systems were introduced by a host of new players in the mid-90s. | | | Weitek attempted to re-enter at the low-end of the market with their W464 (486) and W564 (P5) systems which used the host machines RAM as the frame buffer to lower costs. |
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http://www.weitek.com/textual/about/history.html
(934 words)
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| | PCGuide - Ref - Video Memory Function and Speed |
| | The general rule of thumb is that the information on the site is displayed in the "Contents" frame, called "C", while the links deeper into the structure are in the "Index" frame, called "I". | | | You can use the no-frames version of the Topic Index. | | | You can find information on the site without using frames in three different ways: |
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http://www.pcguide.com/ref/video/mem.htm
(200 words)
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| | Python Frame Buffer |
| | The Python Frame Buffer extension has changed its name to Pyffy, and has also moved to a new home. |
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http://dave.whatever.nu/python/fb
(19 words)
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| | freshmeat.net: Project details for EZFB Linux Frame Buffer API |
| | EZFB is a polymorphic, object oriented Linux frame buffer API written in C, designed to adapt at run time to control any properly configured Linux frame buffer video system. | | | freshmeat.net: Project details for EZFB Linux Frame Buffer API | | | The demonstration applications include a bitmap viewer, screen capture utility, screen saver, and a touch screen calibration utility and an application for generating, viewing, transforming, and saving files according to The International Laser Display Association's ILDA file format. |
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http://freshmeat.net/projects/ezfb
(193 words)
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| | Frame buffer. |
| | The only way I could get any resolutions to work was to load SuSE onto it and use the frame buffer configuration. | | | Is there a BSD equivalent to the Frame Buffer option under Linux. |
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http://listserver.uk.freebsd.org/pipermail/freebsd-users/2001-May/003605.html
(73 words)
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