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Multiprocessor and Multitasking Architecture for Tool Control of the Advanced via Inspection Tools

IP.com Disclosure Number: IPCOM000108285D
Original Publication Date: 1992-May-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 2 page(s) / 92K

Publishing Venue

IBM

Related People

Abbattista, A: AUTHOR [+3]

Abstract

Disclosed is a multiprocessor architecture for controlling an automated handling system using a Personal Computer (PC AT*) as the master tool controller. Multiple processor buses interface directly with the tool hardware through digital I/O or motor controllers. The buses are connected to the PC-AT via serial ports.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Multiprocessor and Multitasking Architecture for Tool Control of the Advanced via Inspection Tools

       Disclosed is a multiprocessor architecture for
controlling an automated handling system using a Personal Computer
(PC AT*) as the master tool controller.  Multiple processor buses
interface directly with the tool hardware through digital I/O or
motor controllers.  The buses are connected to the PC-AT via serial
ports.

      The IBM PC AT is used as the host computer.  It acts as the
operator interface to the system and is connected to each Std-Bus by
RS- 232C serial link using the Semiconductor Equipment Communications
Standard (SECS) 1 protocol.  A separate communication processor
within the PC-AT handles the serial communication.  A custom software
driver both configures the processor board and guarantees integrity
of the transferred data.  The driver also presents a DOS-style file
I/O interface to all applications.

      A multiple Std-Bus system allows the separation of all hardware
tasks into workable modules for handling all motor controls and
digital inputs/outputs in real time.  The Advanced Via Inspection
Tool (AVIT) system (see the figure) incorporates three buses for the
transport and inspection of product.  The first is to introduce
product to the tool, the second is to transport the product through
the inspection, and the third is to unload the product from the tool.
This arrangement allows for the handling of a variety of
I/O-intensive processes.

      Each Std-Bus contains a microprocessor, a slave processor to
handle the serial communication, memory, and digital I/O cards from
Ziatech Corp., and motor controller cards from Actec Inc. and Matrix
Corp. appropriate for its section of the tool.  All software for the
buses is written in 'C' for low-level I/O functionality.  This along
with a board support package provides a DOS-like interface to...