Showing papers on "Latency (engineering) published in 1990"

Memory consistency and event ordering in scalable shared-memory multiprocessors

Abstract: Scalable shared-memory multiprocessors distribute memory among the processors and use scalable interconnection networks to provide high bandwidth and low latency communication. In addition, memory ...

A low-latency 60 Hz stereo vision system for real-time visual control

Abstract: The author presents an image acquisition and processing system designed for real-time six-dimensional object tracking with the precise temporal semantics and low latency required for use within the feedback loops of robotic applications. To achieve real-time performance, the system must extract from the image only the information needed to accomplish the task. Successful task performance depends on an integrated system. rather than on a collection of components. The hardware design takes the form of two large complementary VME-compatible cards: TRIAX, capable of simultaneously acquiring and processing two high-resolution video streams, and JIFFE, capable of 20 MFLOPS for the three-dimensional calculations. Algorithms are described that enable the system to track a rectangular solid, intended to track objects held by a robot hand. The algorithms hinge on scanning only small line segments of the image, followed by techniques for reconstructing object location from sparse edge points. The system tracks a cardboard box. >

A high-performance, memory-based interconnection system for multicomputer environments

Abstract: The objective of this paper is to outline the design and operation of a very high-performance, memory-mapped interconnection system, called Merlin. The design can be effectively utilized to interconnect processors in a wide variety on environments, ranging from closely-coupled, dedicated systems to distributed workstations. The system provides a uniform approach to parallel programming which is independent of interconnection topology, processing elements, and languages. By using dynamically mapped reflective memory, the system can support selectively shared virtual memory regions. This approach permits user selected information to be shared at high speeds and with low latency. There is no software involvement in the actual sharing of information and the system overlaps computation and communication automatically, word-by-word, to the extent possible.

SYMFONET: ultra-high-capacity distributed packet switching network for telecoms and multiprocessor computer applications

Abstract: A synchronous multifrequency optical network architecture (SYMFONET) is proposed. It uses practical high-density wavelength division multiplexed direct detection components, and will enable 10–100 Gbit/s of packetised data to be switched with extremely low latency.

Data/voicenideo integration on fiber distributed data interface

Abstract: The Fiber Distributed Data Interface (FDDI) is a 100 megabit per second (Mbps) Local Area Network that uses Optical Fiber as the medium. It provides both the high bandwidth and low latency needed to match the capacity of future personal computers. Hence it is expected to become the preferred local area network systems of the 1990s. The FDDI protocol is based on a timed token ring access method. In this paper, we propose a media access control protocol for combined Data/Voice/Video services on FDDI. The most important service requirement for the packetized Voice and Video is the transport of this data with tolerable delays. Ile effect of multiple Voice and Video channels on the asynchronous data traffic and the capacity to handle these services on FDDI is investigated by means of simulation methods.