US5223929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television system
Assignee: Nippon Television Network Corp
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Filing: 1991-03-25
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Granted: 1993-06-29
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Expires: 2011-03-25
Abstract
Abstract The present invention relates a television system by which it is possible to obtain a wide picture with improved vertical resolution over the entire screen of a television receiver without deteriorating the picture quality by avoiding multiplexing of the high-frequency component of the side panel upon the broadcasting screen, and more particularly to a television system which transmits a television signal of having an aspect ratio of 9:16 by the same raster as that of a conventional type television signal with an aspect ratio of 3:4 and which minimizes the black band-like portions appearing upon the upper and lower portions of the screen of a conventional type television receiver.
Inventors
- 👤 Yoshio Sugimori
- 👤 Yoshihide Kimata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:05
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/007; H04N11/00; H04N11/24; H04N11/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
A television system for inserting and transmitting signals to a raster having no-picture sectors so that an original image signal having an aspect ratio of 9:16 can be received with smaller no-picture sectors by means of a receiver having a screen having an aspect ratio of 3:4, comprising: first means for developing first horizontal high frequency component signals derived from left and right ends of said original image signal; second means for developing a second signal for improving the vertical resolution of said original image signal; third means for developing third horizontal low frequency component signals derived from said left and right ends of said original image signal; and means for overlapping and inserting said first horizontal high frequency component signals and said second vertical resolution improving signal into upper and lower no-picture sectors of said screen, and for inserting said third horizontal low frequency component signals into left and right no-picture sectors of said screen.
Claim 2
Dependent Claim
156 words
A television system for inserting and transmitting signals to a raster having no-picture sectors so that an original image signal having an aspect ratio of 9:16 can be received with smaller no-picture sectors by means of a receiver having a screen having an aspect ratio of 3:4, comprising: first means for developing first horizontal high frequency component signals derived from left and right ends of said original image signal; second means for developing a second signal for improving the vertical resolution of said original image signal; third means for developing third horizontal low frequency component signals derived from said left and right ends of said original image signal; and means for overlapping and inserting said first horizontal high frequency component signals and said second vertical resolution improving signal into upper and lower no-picture sectors of said screen, and for inserting said third horizontal low frequency component signals into left and right no-picture sectors of said screen.
Claim 3
Dependent Claim
67 words
A television system as set forth in claim 1, wherein: said left and right ends of said original image signals comprise "m" pixels equally spaced with respect to each other in the horizontal direction of said original image; and said first horizontal high frequency component signals comprise "n" pixels generated by thinning out means from said left and right ends of said original image signals, wherein n<m.
Claim 4
Dependent Claim
61 words
A television system as set forth in claim 2, wherein: television signals are transmitted in accordance with a signal transmission band having a predetermined frequency; and said thinning out means for thinning out said "n" pixels comprising said first horizontal high frequency component signals comprises a sampling frequency which is approximately two times said predetermined frequency of said signal transmission band.
References Cited (Backward Citations)
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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) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |