A direct-view CRT console for remote computing

McDonald, Harold P.; Ninke, William H.; Weller, Donnelle

doi:10.1109/isscc.1967.1154514

Cited by 10 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This repetitive cyclic nature of the scanned image immediately suggests a rotating magnetic drum or disk as an appropriate storage medium [3,6]. However, refreshing the data stored on the drum or disk becomes a problem, since new information cannot be written by the computer until the appropriate location on the drum or disk passes the write head.…”

Section: Storage Of the Scanned Imagementioning

confidence: 99%

Scanned-display computer graphics

Noll¹

1971

Commun. ACM

View full text Add to dashboard Cite

A television-like scanned-display system has been successfully implemented on a Honeywell DDP-224 computer installation. The scanned image is stored in the core memory of the computer, and software scan conversion is used to convert the rectangular coordinates of a point to the appropriate word and bit in an output display array in core storage. Results thus far indicate that flicker-free displays of large amounts of data are possible with reasonably fast graphical interaction. A scanned image of size 240 X 254 points is displayed at a 30 frame-per-second rate.

show abstract

Section: Storage Of the Scanned Imagementioning

confidence: 99%

Scanned-display computer graphics

Noll¹

1971

Commun. ACM

View full text Add to dashboard Cite

show abstract

“…The cost of storing images that way has been one factor in the slow dissemination of graphics capability in commonly availabe computers. Older systems used bit maps stored on tracks of drums (3), and these have been used in situations where digitized images are analyzed for robot control (4) and in advanced circuit design (5). The use of drum tracks for picture storage makes the storage support per display economical if there is justification for at least several dozen displays in close proximity, which will share the storage drum.…”

Section: Introductionmentioning

confidence: 99%

A building block approach to color graphics

Flexer¹,

Wiederhold

1979

Proceedings of the 6th Annual Conference on Computer Graphics and Interactive Techniques

View full text Add to dashboard Cite

Graphics and imaging are important in scientific, academic and industrial environments. In the past graphics systems have been used with large computers and were only available to a minority of users. The relatively small and specialized use of graphics has inhibited sharing of software and prevented standardization necessary for widespread use. Dense semiconductor memory has recently become easily available in large quantities and makes high resolution graphics and imaging systems feasible. The concepts leading to the design of the present system come from the need to provide a large number of graphlc and imaging functions, in a compact form, to a commonly used microprocessor bus. Three fundamental functions are implemented: a video fnamedigitizer, an image memory, and an output video generator. Video images can be digitized in one frame time with a precision of l, 2 or 4 bits per pixel. The video generator can display the images in gray levels or in color. The software selectable system parameters include a variety of image formats, video output controls, digitization commands, addressing modes, vertical image offset, and lightpen controls. A novel contouring digitization mode is useful to meduce images obtained in gray scale to outline form. Such real-time preprocessing reduces memory and bandwidth requirements. Photographic illustrations demonstrate various operating modes.

show abstract

“…Some of their advantages are: lower display cost; higher flicker-free display capacity; greater accuracy and stability; capability of adding inexpensive slave displays; lower signal distribution costs; ability to mix computer generated video with other video background signals; black-on-white or white-on-black viewing; wider tone range; and easy adaptability to solid, shaded and colored figures [1,11,13,16,17,19,20,21,23,26].…”

mentioning

confidence: 99%

A cell organized raster display for line drawings

Jordan¹,

Barrett

1974

Commun. ACM

View full text Add to dashboard Cite

Raster scan computer graphics displays with "real time" character generators have previously been limited to alphanumeric characters. A display is described which extends the capabilities of this organization to include general graphics.The feasibility of such a display is shown by deriving the minimum number of patterns required in the read only memory of the character generator to synthesize an arbitrary line. The synthesis process does not compromise picture quality, since the resulting dot patterns are identical with those of a conventional raster display. Furthermore, the time constraints of a raster display are shown to be satisfied for a typical design for very complex line drawings.

show abstract

A direct-view CRT console for remote computing

Cited by 10 publications

References 0 publications

Scanned-display computer graphics

Scanned-display computer graphics

A building block approach to color graphics

A cell organized raster display for line drawings

Contact Info

Product

Resources

About