Algorithms for Iterative Array Multiplication

Algorithms for the parallel multiplication of two n bit binary numbers by an iterative array of logic cells are discussed. The regular interconnection structures of the multiplier array cell elements, which are ideal for VLSI implementation, are described. The speed and hardware complexity of two new iterative array algorithms, both of which require n cell delays for one n by n bit multiplication, are compared with a straight-forward iterative array algorithm having a 2n cell delay and its higher radix version having an n cell delay

Parallel Accessible Memory

A new design of a memory device which allows simultaneous access to more than one location is proposed. The unique feature of this multiple accessibility of the memory is realized by applying a binomial concentrator, a type of sparse crossbar interconnection network, to content-addressable memory. The organization of the memory system and the concentration network structure as well as the network characteristics are described along with a distributive control algorithm. Applications of the memory system to parallel processing environments are also included

VECTION INDUCED BY ILLUSORY MINIATURIZATION OF MOVING PICTURE

The effects of image miniaturization on visually induced self-motion perception (vection) were examined in a psychophysical experiment in which 11 observers participated. The original motion picture stimulus was filmed from a camera mounted on the front of a moving train. This kind of motion stimulus can be considered equivalent to retinal flow that we daily experience under natural visual environment, and termed as "real world stimulus". Saturation enhancementand defocused blur were applied to this original movie, as two types of miniaturization transformations. The results of psychophysical experiment revealed that the miniaturized movies can induce self-motion perception as strong as the original stimulus, although naturalness of the image experienced under the miniaturized conditions were significantly detracted. Impacts of using a real world stimulus as a future vection inducer were discussed base on the results