Accession Number:

AD0744118

Title:

XCRIBL: A Hardcopy Scan Line Graphics System for Document Generation,

Descriptive Note:

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF COMPUTER SCIENCE

Report Date:

1972-03-28

Pagination or Media Count:

69.0

Abstract:

XCRIBL is a system developed at CMU for generating hard copy computer output of arbitrary type fonts, graphics, and grey-scale images using a Xerox Graphic Printer XGP. XCRIBL can be used to generate documents approaching the quality of printed text with the use of a document generation language XOFF or PUB and a character set design program BILOS. Textual and graphic information to be printed is shipped in its raw form from the host computer PDP-10 to a mini-computer PDP-11 which acts as an intelligent channel controlling the XGP. Careful design of the data structures and the hardware interface permit the mini-computer to generate each scan line as needed without having to resort to a brute force solution of generating a bit-image for the whole page 3.5 million bits for off-line printing. Variable width characters and the ability to mix text and graphics distinguish the present solution from the known simpler schemes for scan line generation. Author

Subject Categories:

  • Computer Programming and Software
  • Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE