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US4736246A
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Stereoscopic video display system
Assignee: Sony Corp
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Filing: 1987-03-11
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Granted: 1988-04-05
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Expires: 2007-03-11
Abstract
Abstract A stereoscopic video display system is disclosed, in which an interlaced scanning picture information for a viewer's left eye and an interlaced scanning picture information for the viewer's right eye are doubled in frequency and displayed alternately on a monitor display at the field rate. Also, left and right visual fields of the viewer are shut off alternately by glasses with a shutter mechanism in synchronism with a field period and a start time point and an end time point of the vertical deflection are selected properly in such a manner that the monitor display may carry out the interlaced scannings for each of the left eye and the right eye. Thus, the left and right pictures are displayed in the interlaced scanning manner, respectively and the quality of the reproduced picture will have superior clarity and characteristics.
Inventors
- 👤 Susumu Nishikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:32
CPC Classifications
H; H04; H04N; H04N13/00; H04N13/30; H04N13/332; H04N13/341
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A stereoscopic video display system, comprising: means for frequency-doubling interlaced input information for a viewer's left and right eyes, respectively; means for displaying frequency-doubled interlaced information on a picture display device alternately at a field rate; means for alternately interrupting the viewer's left and right eyes in synchronism with the field period; means for correcting the deflection such that each of the scannings for said viewer's left and right eyes are interlaced, wherein the starting time and the ending time of the vertical deflection are selected such that an odd field pattern is repeated twice and an even field pattern is repeated twice, wherein trace periods of successive fields are selected to be equal to each other; and, wherein the retrace periods between two successive fields are selected to be different.
Claim 2
Dependent Claim
131 words
A stereoscopic video display system, comprising: means for frequency-doubling interlaced input information for a viewer's left and right eyes, respectively; means for displaying frequency-doubled interlaced information on a picture display device alternately at a field rate; means for alternately interrupting the viewer's left and right eyes in synchronism with the field period; means for correcting the deflection such that each of the scannings for said viewer's left and right eyes are interlaced, wherein the starting time and the ending time of the vertical deflection are selected such that an odd field pattern is repeated twice and an even field pattern is repeated twice, wherein trace periods of successive fields are selected to be equal to each other; and, wherein the retrace periods between two successive fields are selected to be different.
Claim 3
Dependent Claim
105 words
A stereoscopic video display system, comprising: means for frequency-doubling interlaced input information for viewer's left and right eyes, respectively; means for displaying frequency doubled interlaced information on a picture display device alternately at a field rate; means for alternately interrupting the viewer's left and right eyes in synchronism with the field period; and means for correcting the deflection such that each of the scannings for said viewer's left and right eyes are interlaced, and wherein the deflection is corrected by suitably selecting a charge starting time or a discharge starting time of a capacitor of a charging and discharging circuit in a vertical deflection circuit.
Claim 4
Dependent Claim
105 words
A stereoscopic video display system, comprising: means for frequency-doubling interlaced input information for viewer's left and right eyes, respectively; means for displaying frequency doubled interlaced information on a picture display device alternately at a field rate; means for alternately interrupting the viewer's left and right eyes in synchronism with the field period; and means for correcting the deflection such that each of the scannings for said viewer's left and right eyes are interlaced, and wherein the deflection is corrected by suitably selecting a charge starting time or a discharge starting time of a capacitor of a charging and discharging circuit in a vertical deflection circuit.
Claim 5
Dependent Claim
27 words
A stereoscopic video display system as claimed in claim 2, wherein both of the charge starting time and discharge starting time of said capacitor are properly selected.
Claim 6
Dependent Claim
33 words
A stereoscopic video display system as claimed in claim 1, wherein the retrace periods between two successive fields are selected to be different by 0.5 H where H is one horizontal line period.
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) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |