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US3698100A Expired / Lapsed US ⏱️ 0.0 years remaining

Operator responsive programmed learning apparatus

Assignee: Eastman Kodak Co
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Filing: 1971-01-25
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Granted: 1972-10-17
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Expires: 1991-01-25
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Abstract

Abstract In a rear projection viewer for showing a programmed viewing web having encoded frames thereon, light beams are directed across the face of a display screen onto photodetectors located about its periphery. A student can indicate a response to a projected answer coded scene, such as a question, by presenting a finger or other object at the face of the display screen at a selected answer point, thereby interrupting a light beam or beams. The photodetectors are connected to correlating circuitry which compares the student''s response with information coded on the scene''s frame. The next scene presented is program selected in accordance with what response the student registered.

Inventors

  • 👤 Lee F Frank

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 13:46
CPC Classifications
G; G09; G09B; G09B7/00; G09B7/06; G09B7/08

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 115 words
An operator responsive device having a projection lamp and screen for displaying information from a response encoded programmed storage medium bearing encoding corresponding to the displayed information, said device comprising: means for directing light from said lamp into light beams adjacent to and transversing said display screen; photodetectors positioned to receive light from said light beams provided such light beams remain uninterrupted by an operator response; circuit means operatively connected to the photodetectors and responsive to the encoded medium for comparing an operator response to the encoding which corresponds to the information displayed; and means operatively connected to said circuit means for producing signals representative of the result of comparisons made by said circuit means.
Claim 2
Dependent Claim 115 words
An operator responsive device having a projection lamp and screen for displaying information from a response encoded programmed storage medium bearing encoding corresponding to the displayed information, said device comprising: means for directing light from said lamp into light beams adjacent to and transversing said display screen; photodetectors positioned to receive light from said light beams provided such light beams remain uninterrupted by an operator response; circuit means operatively connected to the photodetectors and responsive to the encoded medium for comparing an operator response to the encoding which corresponds to the information displayed; and means operatively connected to said circuit means for producing signals representative of the result of comparisons made by said circuit means.
Claim 3
Dependent Claim 26 words
The device of claim 1 wherein said light beam forming and directing means comprises means for reflecting light beams adjacent to and transversing said display screen.
Claim 4
Dependent Claim 104 words
A teaching machine having a projection lamp and screen for displaying information from a response encoded programmed media containing questions and encoded answers stored thereon, said machine comprising: photodetectors positioned to receive light directed across the front of said display screen; means for illuminating said photodetectors with light from said lamp, a student response being indicated by the interruption of light impinging on at least one of said photodetectors; means for indicating the correctness of a student response; and means operatively connected to said photodetectors for comparing the encoded answer for the displayed question with the student response and for activating said indicating means.
Claim 5
Dependent Claim 104 words
A teaching machine having a projection lamp and screen for displaying information from a response encoded programmed media containing questions and encoded answers stored thereon, said machine comprising: photodetectors positioned to receive light directed across the front of said display screen; means for illuminating said photodetectors with light from said lamp, a student response being indicated by the interruption of light impinging on at least one of said photodetectors; means for indicating the correctness of a student response; and means operatively connected to said photodetectors for comparing the encoded answer for the displayed question with the student response and for activating said indicating means.
Claim 6
Dependent Claim 27 words
The teaching machine of claim 3 wherein said light comprises a grid of light beams across and closely spaced from the front face of said display screen.
Claim 7
Dependent Claim 110 words
A display device having a projection lamp, a media moving mechanism and a screen for displaying information from a response encoded programmed media, said device comprising: means for directing light from said projection lamp across the face of said screen; photodetectors positioned to receive said light having outputs in accordance with the amount of light impinging thereon; and circuit means for comparing the outputs of the photodetectors with the encoding on said media corresponding to the information displayed, whereby upon interruption of the light falling upon at least one of the photodetectors, said circuit means actuates said mechanism to move said media in accordance with the result of the comparison.
Claim 8
Dependent Claim 110 words
A display device having a projection lamp, a media moving mechanism and a screen for displaying information from a response encoded programmed media, said device comprising: means for directing light from said projection lamp across the face of said screen; photodetectors positioned to receive said light having outputs in accordance with the amount of light impinging thereon; and circuit means for comparing the outputs of the photodetectors with the encoding on said media corresponding to the information displayed, whereby upon interruption of the light falling upon at least one of the photodetectors, said circuit means actuates said mechanism to move said media in accordance with the result of the comparison.
Claim 9
Dependent Claim 158 words
A student responsive teaching machine having a projection lamp and screen for displaying information from a response encoded programmed storage media and a media moving mechanism, said machine comprising: photodetectors having outputs corresponding to light impinging thereon; means for illuminating the photodetectors with light from said lamp by directing light beams to form a grid-like pattern across the face of the screen, whereby a student response is registered by interruption of at least one of said light beams; first circuit means for controlling said media moving mechanism; second circuit means for comparing the encoding corresponding to the displayed information with the outputs of said photodetectors; and third circuit means for indicating the correctness of a student response, such that when a student response is registered, said second circuit means enables both said first circuit means to move the media in accordance with the comparison results and said third circuit means to indicate the correctness of the student response.
Claim 10
Dependent Claim 158 words
A student responsive teaching machine having a projection lamp and screen for displaying information from a response encoded programmed storage media and a media moving mechanism, said machine comprising: photodetectors having outputs corresponding to light impinging thereon; means for illuminating the photodetectors with light from said lamp by directing light beams to form a grid-like pattern across the face of the screen, whereby a student response is registered by interruption of at least one of said light beams; first circuit means for controlling said media moving mechanism; second circuit means for comparing the encoding corresponding to the displayed information with the outputs of said photodetectors; and third circuit means for indicating the correctness of a student response, such that when a student response is registered, said second circuit means enables both said first circuit means to move the media in accordance with the comparison results and said third circuit means to indicate the correctness of the student response.
Claim 11
Dependent Claim 24 words
The machine of claim 6 wherein said third circuit means comprises means for indicating a correct response and means for indicating an incorrect response.
Claim 12
Dependent Claim 20 words
The machine of claim 6 wherein said third circuIt means comprises means for recording the correctness of a student response.
Claim 13
Dependent Claim 160 words
An operator responsive device having a media moving mechanism, a projection lamp and a screen for displaying information from a response encoded programmed media, said device comprising: photodetectors positioned to receive light beams from the lamp directed transversely across and adjacent said screen; means for illuminating said photodetectors with light from said lamp; first circuit means associated with said photodetectors for providing an output responsive thereto; second circuit means responsive to the encoding on the media corresponding to the displayed information for providing an output responsive thereto; and comparison means for comparing the outputs of said first and second circuit means and for actuating the media moving mechanism in accordance with the result of the comparison, such that when information is displayed and a response is registered by an operator initiated interruption of at least one of said light beams, said media moving mechanism is actuated and said media is moved in accordance with the program and the operator response.
Claim 14
Dependent Claim 160 words
An operator responsive device having a media moving mechanism, a projection lamp and a screen for displaying information from a response encoded programmed media, said device comprising: photodetectors positioned to receive light beams from the lamp directed transversely across and adjacent said screen; means for illuminating said photodetectors with light from said lamp; first circuit means associated with said photodetectors for providing an output responsive thereto; second circuit means responsive to the encoding on the media corresponding to the displayed information for providing an output responsive thereto; and comparison means for comparing the outputs of said first and second circuit means and for actuating the media moving mechanism in accordance with the result of the comparison, such that when information is displayed and a response is registered by an operator initiated interruption of at least one of said light beams, said media moving mechanism is actuated and said media is moved in accordance with the program and the operator response.
Claim 15
Dependent Claim 19 words
The device of claim 9 further comprising means for indicating a correct response operatively connected to said comparison means.
Claim 16
Dependent Claim 19 words
The device of claim 9 further comprising means for indicating an incorrect response operatively connected to said comparison means.
Claim 17
Dependent Claim 12 words
The device of claim 9 further comprising means for recording the response.
Claim 18
Independent Claim 91 words
The method of using a teaching machine having a projection lamp and screen for displaying information from response encoded programmed media, said method comprising: displaying response encoded information on the screen; directing light beams from the lamp across the face of the screen to selectively located photodetectors; interrupting at least one light beam to enable the circuitry to advance the media in accordance with encoding and photodetector output affected by light beam interruption; and moving the media in response to comparison of encoding corresponding to the displayed information and photodetector output.
Claim 19
Independent Claim 91 words
The method of using a teaching machine having a projection lamp and screen for displaying information from response encoded programmed media, said method comprising: displaying response encoded information on the screen; directing light beams from the lamp across the face of the screen to selectively located photodetectors; interrupting at least one light beam to enable the circuitry to advance the media in accordance with encoding and photodetector output affected by light beam interruption; and moving the media in response to comparison of encoding corresponding to the displayed information and photodetector output.

References Cited (Backward Citations)

US3137948A Cited
US3382588A Cited
US3522664A Cited
US3596376A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-10-17 1976-04-17 1976-10-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-17 1980-04-17 1980-10-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-17 1984-04-17 1984-10-17 $7700.00 Window Closed / Lapsed

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