US3878327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television system for improving reading skills
Assignee: Westinghouse Electric Corp
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Filing: 1973-10-17
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Granted: 1975-04-15
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Expires: 1993-10-17
Abstract
Abstract A TV system is provided for improving the reading skills by viewing selected information displayed within an isolated window defined within an otherwise blanked raster of the TV receiving tube. Blanking pulses are controlled to determine the dimensional size of the display window which corresponds to a selected portion of video scan lines. The disclosure provides in one form that the window is controlled to move along the TV screen as in a reading pacer device. A ramp generator controls the width of the blanking pulses to bring about horizontal movement of the window. The dimensional size and vertical position of the window are also controlled. In a second form, a time counter is used to limit the visual display of information in the window to a brief period of time to train the viewer in visual perception.
Inventors
- 👤 Marcus H Uhler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:59
CPC Classifications
G; G09; G09B; G09B17/00; G09B17/04; H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/24; H04N7/00; H04N7/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
In a system to form a video display window within a blanked raster of a television receiving tube, the combination of: television receiver means for deriving a video signal corresponding to scan lines of video information for display on the television receiving tube, blanker means for defining a single video signal display window within the blanked raster of said television receiving tube, means delivering blanking pulses to said blanker means for blanking portions of selected horizontal scan lines to determine the dimensional size of said single video signal display window to display selected portions of a plurality of said scan lines of video information, and timing control means for controlling the display duration of the video information within the single display window.
Claim 2
Dependent Claim
122 words
In a system to form a video display window within a blanked raster of a television receiving tube, the combination of: television receiver means for deriving a video signal corresponding to scan lines of video information for display on the television receiving tube, blanker means for defining a single video signal display window within the blanked raster of said television receiving tube, means delivering blanking pulses to said blanker means for blanking portions of selected horizontal scan lines to determine the dimensional size of said single video signal display window to display selected portions of a plurality of said scan lines of video information, and timing control means for controlling the display duration of the video information within the single display window.
Claim 3
Dependent Claim
39 words
The system of claim 1 wherein said means delivering blanking pulses include a monostable multivibrator, and adjustment means connected to said monostable multivibrator for producing a pulse width control signal determinative of the width of said video display window.
Claim 4
Dependent Claim
38 words
The system of claim 1 wherein said means for delivering blanking pulses comprises a monostable multivibrator, said system further including means for producing sync pulses including pulses corresponding to the horizontal scan rate to trigger said monostable multivibrator.
Claim 5
Dependent Claim
29 words
The system of claim 3 further including adjustment means operatively connected to said monostable multivibrator for producing a control signal determinative of the width of said video display window.
Claim 6
Dependent Claim
70 words
The system of claim 3 wherein said control means comprises a pulse counter having pulse count output lines representative of different numbers of pulse counts, said means for producing sync pulses further producing vertical sync pulses, means for applying pulses proportional to the occUrring rate of said vertical sync pulses to said pulse counter, and switch means for connecting one of said pulse count output lines to said blanker means.
Claim 7
Dependent Claim
24 words
The system of claim 1 further including means for controlling the horizontal position of said display window within the raster of said receiving tube.
Claim 8
Dependent Claim
62 words
The system of claim 6 wherein said means for controlling the horizontal position of said display window includes a ramp generator, a monostable multivibrator receiving a signal from said ramp generator for delivering progressively increasing pulse width signals to said blanker means to thereby cause said display window to progressively move in the horizontal direction across the raster of said receiving tube.
Claim 9
Dependent Claim
44 words
The system according to claim 7 further comprising threshold detector means for resetting said ramp generator to a predetermined signal output level corresponding to a horizontal position of said display window at a selected vertical edge of the raster of said television receiving tube.
Claim 10
Dependent Claim
31 words
The system of claim 6 wherein said means for delivering blanking pulses further includes means for determining the number of horizontal scan lines to define the height of said display window.
Claim 11
Dependent Claim
24 words
The system of claim 9 further including means for controlling the vertical position of said display window within the raster of said receiving tube.
Claim 12
Dependent Claim
42 words
The system of claim 10 wherein said means for controlling the vertical position of said display window includes a monostable multivibrator for producing a variable width pulse controlled in response to said means for controlling the horizontal position of the display window.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |