Dynamic magnetic information storage or retrieval – Head – Core
Patent
1977-08-31
1979-06-19
Grieb, William H.
Dynamic magnetic information storage or retrieval
Head
Core
360 2, G09B 504
Patent
active
041582640
ABSTRACT:
This invention relates to an improvement in an audio-visual teaching apparatus of the type having an audio signal recorded on a magnetic strip attached to an opaque information card. When the card is transported past a playback system, the audio signal from the magnetic strip is decoded and reproduced in the form of an audible signal. The improvement includes the use of patterned alphanumeric apertures through the information card for storing the visual information thereon. A source of illumination is positioned behind the path of the information card for illuminating the alphanumeric apertures within the information card as the audio information is decoded and reproduced from the magnetic strip. A plurality of filters are interposed between the source of illumination and the viewer for controlling the color of the illumination passing between, whereby the viewer may select the color in which the visual information is to be displayed in order to improve the learning process.
REFERENCES:
patent: 2603006 (1952-07-01), MacChesney et al.
patent: 2822425 (1958-02-01), Hicks
patent: 2849542 (1958-08-01), MacChesney
patent: 2975672 (1961-03-01), Shields
patent: 2985069 (1961-05-01), Sampson
patent: 3185776 (1965-05-01), Bender
patent: 3215036 (1965-11-01), Kirkconnell et al.
patent: 3255537 (1966-06-01), Cole
patent: 3369308 (1968-02-01), Curran
patent: 3712973 (1973-01-01), Kral
patent: 3760164 (1973-09-01), Kral
patent: 3767208 (1973-10-01), Chernowitz
patent: 3821519 (1974-06-01), Pietenpol
patent: 3823492 (1974-07-01), Allain
patent: 3840896 (1974-10-01), Lorbergs
patent: 3938139 (1976-02-01), Day
patent: 4007547 (1977-02-01), Butler et al.
patent: 4019263 (1977-04-01), Sakuma
Dixon Richard D.
Grieb William H.
LandOfFree
Audio-visual teaching apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Audio-visual teaching apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Audio-visual teaching apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-52639