Sysetm for optically sensing the placement of magnetic tape cart

Details Sysetm for optically sensing the placement of magnetic tape cart Sysetm for optically sensing the placement of magnetic tape cart

1990-11-13

1994-11-15

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

360 746, 360 93, 250561, G11B 1518, G11B 15008, G01N 2186

Patent

active

053653831

ABSTRACT:
A computer memory backup device which utilizes standardized computer tape cartridges is disclosed. The focus of the invention is upon the techniques for ascertaining the appropriate placement of such cartridges to allow operation of the computer memory backup device. The device being connected to a computer allows for the determination of a cartridge presence through the use of an optical sensor mechanism. The sensor mechanism includes a light emitting diode (l.e.d.), light pipe and phototransistor. During any time that the cartridge is not in the computer memory device or improperly or incompletely inserted the electromagnetic radiation emitted by the l.e.d. will be directed by the light pipe to the phototransistor. In this manner a negative determination is correctly made. When the cartridge is correctly and completely inserted, the pathway of the electromagnetic radiation is blocked between the light pipe and the phototransistor. In this manner a positive determination is correctly made. To enhance the accuracy of the disclosed device, time domain filtering is used to screen erroneous electromagnetic radiation from causing an incorrect cartridge in determination.

REFERENCES:
patent: 3825949 (1974-07-01), Pyles
patent: 4584620 (1986-04-01), Dopp et al.
patent: 4607303 (1986-08-01), Cybulski
patent: 4733314 (1988-03-01), Ogawa et al.
patent: 4864439 (1989-09-01), Duurland
patent: 5222003 (1993-06-01), Miller et al.
Author: ANX TC X3B5; Title: Unrecorded Magnetic Mini Tape Cartridge for Information Interchange; date unknown.

Affiliated with

Also associated with

Rating

Sysetm for optically sensing the placement of magnetic tape cart does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sysetm for optically sensing the placement of magnetic tape cart, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sysetm for optically sensing the placement of magnetic tape cart will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1102064