VHDL in an object oriented VLSI design environment

1988 ◽  
Author(s):  
M.J. Chung ◽  
E. Rogers ◽  
Y. Won
Keyword(s):  
Vlsi Design ◽  
Object Oriented ◽  
Design Environment

Heterogeneous Distributed Data Storage for an Object-Oriented Engineering Design Environment

1993 ◽  
Author(s):  
Lee P. Brintle ◽  
Elizabeth A. Koppes ◽  
J. K. Wu
Keyword(s):  
Data Storage ◽  
Object Oriented ◽  
Current Method ◽  
Distributed Data ◽  
Design Environment ◽  
Single Node ◽  
Distributed Data Storage ◽  
Object Oriented Design ◽  
File Storage ◽  
Network File System

Abstract The Tracked Vehicle Workstation (TVWS) is a distributed, object-oriented design environment that stores the large amounts of data associated with mechanical system’s design and analysis across heterogeneous UNIX† machines on a network. A Distributed ASCII File Storage (DAFS) server was developed to provide an easy to port, easy to modify means of retrieving and updating files on remote machines. This paper describes the different techniques and difficulties of methods the TVWS environment has used previously, including commercial solutions, single-node storage and the Network File System (NFS)‡, as well as a description of the current method utilizing DAFS.

A Vertically Integrated VLSI Design Environment

1983 ◽  
Author(s):  
J. Rosenberg ◽  
D. Boyer ◽  
J. Dallen ◽  
S. Daniel ◽  
C. Poirier ◽  
...  
Keyword(s):  
Vlsi Design ◽  
Design Environment

A Digital-Based Low-Power Fully Differential Comparator

2016 ◽  
Vol 26 (01) ◽  
pp. 1750002 ◽  
Author(s):  
Anil Singh ◽  
Ayushi Goel ◽  
Alpana Agarwal
Keyword(s):  
Low Power ◽  
Analog Circuit ◽  
Substantial Reduction ◽  
Vlsi Design ◽  
Cost Effective ◽  
Cmos Technology ◽  
Portable Devices ◽  
Design Environment ◽  
Voltage Comparator ◽  
Fully Differential

Low-power circuits are highly in demand in this power-hungry world of batteries and portable devices. Though many low-power techniques are prevalent at various stages of a VLSI design cycle, but most of them have retained their own domain. A novel, digital-in-concept, fully differential voltage comparator circuit has been implemented in this paper. This provides substantial reduction in the power consumption. It is highly cost-effective, both in terms of time and efforts as an analog circuit is being designed on digital basis. The proposed voltage comparator has been designed and simulated in Cadence[Formula: see text] Virtuoso Analog Design Environment using UMC 180[Formula: see text]nm CMOS technology at 1.8[Formula: see text]V supply.

Dynamic Configuration Evolution of Distributed CE Design in Object-Oriented Databases

2001 ◽  
Author(s):  
A. Al-Khudair ◽  
W. A. Gray ◽  
J. C. Miles
Keyword(s):  
Concurrent Engineering ◽  
Object Oriented ◽  
Distributed Architecture ◽  
Design Environment ◽  
Dynamic Configuration ◽  
Domain Specific ◽  
Current State ◽  
Complex Design ◽  
Object Oriented Databases

Abstract This paper discusses the evolution of the configurations of a complex design artifact in a distributed concurrent engineering (CE) design environment. A generalized object-oriented model which captures the evolution of configurations and their components will be preseneted. We not only describe the object-oriented model, we also show how the dynamics between a configuration version and its components’ versions is maintained. The notions of version domain and version provenance are introduced to represent the domain-specific versions and to show how an object version arrives in its current state based on the 5W provenances (When, Who, Where, What and Why). A distributed architecture of a CE design environment will be also presented.

Features As an Abstraction for Designer Convenience in the Design of Complex Products

2000 ◽  
Author(s):  
Joshua D. Summers ◽  
Douglas Maxwell ◽  
Christopher Camp ◽  
Alley C. Butler
Keyword(s):  
User Interfaces ◽  
Early Stage ◽  
Research Effort ◽  
Object Oriented ◽  
Object Oriented Programming ◽  
Design Environment ◽  
Cad Systems ◽  
Complex Products ◽  
Two Generations ◽  
Feature Based

Abstract This paper reports on a research effort involving design of a class of significantly complex products — nuclear submarines. It focuses on the use of features as a means of design abstraction, and it is found that a principal motivation for the use of features in this design environment is the convenience of the early stage submarine designer. To support this argument, a review of feature research is presented. Experiments in the development of feature catalogs are described, and implementation through two generations of feature based submarine CAD systems are discussed. The architecture of the feature based submarine CAD systems includes the use of Microsoft Foundation Classes (MFC), the ACIS geometric modeler, and user interfaces which store/recall hierarchical submarine feature information easily. Strong connections to object-oriented programming and object-oriented databases are recognized. Conclusions are drawn regarding the use of features for designer convenience and regarding support provided by hierarchical, parameterized features for other means of design automation.

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