US4096462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflection yoke device for use in color television receiver sets
Assignee: Hitachi Ltd
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Filing: 1977-04-07
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Granted: 1978-06-20
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Expires: 1997-04-07
Abstract
Abstract The present invention relates to a deflection yoke device which is preferably combined with an in-line type color picture tube having electron guns aligned horizontally. The distribution of magnetic fields is determined in the horizontal direction such that a sharp or strong barrel magnetic field is localized on the side of the neck portion whereas an extremely sharp pincushion magnetic field is localized on the side of the funnel portion and at the same time, an intensely sharp pincushion magnetic field is distributed between the funnel portion and the neck portion. The central electron beam is deflected more at a greater angle than side electron beams so as to land outside the side electron beams.
Inventors
- 👤 Mitsuharu Akatsu
- 👤 Ichiro Niitsu
- 👤 Masao Obara
- 👤 Ryoichi Hirota
- 👤 Shuzo Matsumoto
- 👤 Takesuke Maruyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:39
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A deflection yoke device comprising a core, a vertical deflection coil and a horizontal deflection coil, in combination with an in-line type color picture tube; said vertical deflection coil having a winding distribution for producing a barrel type magnetic field distribution and said horizontal deflection coil having a whole winding distribution for producing a pincushion type magnetic field distribution sufficient to make the convergence of side electron beams over the entirety of a picture screen of said color picture tube and further having a first winding distribution, at the funnel side portion of the horizontal deflection coil, for producing a sharp pincushion type magnetic field distribution as well as a second winding distribution, at the neck side portion of the horizontal deflection coil, for producing a sharp barrel type magnetic field sufficient to permit the central electron beam to land outside the side electron beams converged with each other at the right and left sides of the picture screen.
Claim 2
Dependent Claim
159 words
A deflection yoke device comprising a core, a vertical deflection coil and a horizontal deflection coil, in combination with an in-line type color picture tube; said vertical deflection coil having a winding distribution for producing a barrel type magnetic field distribution and said horizontal deflection coil having a whole winding distribution for producing a pincushion type magnetic field distribution sufficient to make the convergence of side electron beams over the entirety of a picture screen of said color picture tube and further having a first winding distribution, at the funnel side portion of the horizontal deflection coil, for producing a sharp pincushion type magnetic field distribution as well as a second winding distribution, at the neck side portion of the horizontal deflection coil, for producing a sharp barrel type magnetic field sufficient to permit the central electron beam to land outside the side electron beams converged with each other at the right and left sides of the picture screen.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |