Browse Prior Art Database

Torus Memory Implemented by Bubble and CCD Technologies

IP.com Disclosure Number: IPCOM000041842D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03

Publishing Venue

IBM

Related People

Authors:
Chandra, AK Chang, H Wong, CK [+details]

Abstract

Information can be stored on a torus imbedded in a plane. Fast access is available in both x and y directions. Also available is a circular shift from one edge to the opposite one. This scheme eliminates the need for buffer space, bubble compressors, and compressor-sensors. A torus is a continuous two-dimensional surface, such as a doughnut. When unfolded, it is a square in which the opposite sides are considered to be adjacent or close to each other. Thus Fig. 1 shows an 8x8 torus. Location 35 has four neighbors: 25, 34, 45, and 36. Likewise, location 41, which is at one edge of the square, also has four neighbors: 31, 48, 51, and 42; so does a corner location like 81, which has neighbors 71, 88, 11, and 82, where 11 is at the opposite page.