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Variable Size Buffer Control for Plotted Graphic Output

IP.com Disclosure Number: IPCOM000069029D
Original Publication Date: 1978-Mar-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Attwood, DP [+details]

Abstract

When it is desired to plot graphical data from a graphics display on a plotter, a buffer is required into which data can be loaded. This buffer constitutes a "window" on the graphical data which are plotted by a succession of "windows". The size of the buffer determines the dimensions of the "window" to be processed. A characteristic of plotting graphics data from a bit buffer is that loading is by random access with the subsequent read-out being performed in a systematic fashion. The size of the buffer and the number of buffers are affected not only by the operational characteristics of the plotter but also by the overhead associated with the fetching of the graphic data from a storage medium and processing and windowing a portion of the available data.