Patent US4538993A successfully refreshed from Google Patents.
US4538993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer teaching system
Assignee: Individual
•
Filing: 1984-02-27
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Granted: 1985-09-03
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Expires: 2004-02-27
Abstract
Abstract A classroom computer network requiring no direct visual contact between teacher and student, comprising student stations with microcomputers, display screens, and controls for transmitting to a teacher screen, and a teacher station with a switching console for selectively connecting student and teacher screens for display on any screen.
Inventors
- 👤 Freda Krumholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:07
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/0053
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
A computer teaching system for use with a plurality of separate and independently functioning student computer stations each having a computer and a display screen, and with a teacher station having an independently functioning teacher computer, a display screen and a receiver screen, comprising: a teacher switching console connected to the respective display signal outputs of all computers and to the respective display signal inputs of all display and receiver screens, with switching means thereon for selectively connecting any computer display signal output to any student display screen and the teacher receiver screen, and a student controller disposed one at each student station, and including switching means for selectively displaying the student computer generated display signal output upon said teacher receiving screen.
Claim 2
Dependent Claim
122 words
A computer teaching system for use with a plurality of separate and independently functioning student computer stations each having a computer and a display screen, and with a teacher station having an independently functioning teacher computer, a display screen and a receiver screen, comprising: a teacher switching console connected to the respective display signal outputs of all computers and to the respective display signal inputs of all display and receiver screens, with switching means thereon for selectively connecting any computer display signal output to any student display screen and the teacher receiver screen, and a student controller disposed one at each student station, and including switching means for selectively displaying the student computer generated display signal output upon said teacher receiving screen.
Claim 3
Dependent Claim
24 words
The system of claim 1 further defined by each of said switching means having an indicator means associated therewith for visually indicating switch operation.
Claim 4
Dependent Claim
11 words
The system of claim 2 wherein said indicator means are lights.
Claim 5
Dependent Claim
10 words
The system of claim 3 wherein said lights are LEDs.
Claim 6
Dependent Claim
23 words
The system of claim 1 further defined by override switches for overriding any interruption of the display on any screen of the system.
Claim 7
Dependent Claim
38 words
The system of claim 1 further defined by each student controller having means for indicating whether a specific student computer display signal output or another computer generated display signal output is being displayed on that particular student screen.
Claim 8
Dependent Claim
12 words
The system of claim 6 wherein said means for indicating is lights.
Claim 9
Dependent Claim
10 words
The system of claim 7 wherein said lights are LEDs.
Claim 10
Dependent Claim
58 words
The system of claim 1 further defined by said switching console including a timer switch having adjustable time settings and connected for successively switching the student computer display signal outputs onto the teacher receiver screen for a predetermined period, and a scan pause switch for fixing the present student computer display signal output to the teacher receiver screen.
Claim 11
Dependent Claim
18 words
The system of claim 1 further defined by said computers being non-compatible and independently operable upon differing programs.
Claim 12
Dependent Claim
31 words
The system of claim 1 further defined by the switching means of said teacher switching console and said student controllers also controlling audio channels in the same manner as video signals.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-02 | 1989-03-04 | 1989-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-02 | 1993-03-04 | 1993-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-02 | 1997-03-04 | 1997-09-03 | $7700.00 | Window Closed / Lapsed |