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Proceedings Paper

High-speed video recording with the TDAS
Author(s): Daniel W. Liu; Eric D. Griesheimer; Lynn O. Kesler
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Paper Abstract

The Tracker Data Acquisition System, TDAS is a system architecture for a high speed data recording and analysis system. The device utilizes dual Direct Memory Access (DMA), parallel Small Computer System Interface (SCSI) interface channels and multiple SCSI hard drives. Video rate data capture and storage is accomplished on 16 bit digital data at video rates to 15 Megahertz. The average data rate is approximately 1 Megabyte per second to the current hard disk drives, with instantaneous rates to 5 Megabytes per second. Message protocol enables symbology and frame data to be stored concurrently with the windowed image data. Dual parallel image buffers store 512 Kilobytes of raw image data for each frame and pass windowed data to the storage drives via the SCSI interfaces. Microcomputer control of DMA, Counter Input/Output, Serial Communications Controller and FIFO's is accomplished with a 16 bit processor which efficiently stores the video and ancillary data. Off-line storage is accomplished on 60 Megabyte streaming tape units for image and data dumps. Current applications mclude real-time multimode tracker performance recording as well as statistical post processing of system parameters. Data retrieval is driven by a separate microcomputer, providing laboratory frame-by-frame analysis of the video images and symbology. The TDAS can support 80 Megabytes of on-line storage presently, but can be simply expanded to 400 Megabytes. Phase 2 of the TDAS will include real-time playback of video images to recreate recorded scenarios. This paper describes the system architecture and implementation of the Tracker Data Acquisition system (TDAS), with current applications.

Paper Details

Date Published: 1 August 1990
PDF: 6 pages
Proc. SPIE 1248, Storage and Retrieval Systems and Applications, (1 August 1990); doi: 10.1117/12.19637
Show Author Affiliations
Daniel W. Liu, McDonnell Douglas Electronic Systems Co. (United States)
Eric D. Griesheimer, McDonnell Douglas Electronic Systems Co. (United States)
Lynn O. Kesler, McDonnell Douglas Electronic Systems Co. (United States)

Published in SPIE Proceedings Vol. 1248:
Storage and Retrieval Systems and Applications
David H. Davies; Han-Ping D. Shieh, Editor(s)

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