US3586902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical deflection arrangement in a color television system
Assignee: Robert Bosch Fernsehanlagen GmbH
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Filing: 1969-07-25
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Granted: 1971-06-22
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Expires: 1989-07-25
Abstract
Abstract The vertical deflection coils in a color television system are series connected. Corrective deflection fields are supplied by auxiliary windings, each made of much thinner wire than the corresponding deflection coil. Correction currents are supplied separately to each auxiliary winding. A resistor in series with the series-connected vertical deflection coils serves to supply a feedback voltage to the input of the sawtooth current generator energizing vertical deflection coils.
Inventors
- 👤 Emil Siegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:33
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
In the pickup tubes of a color television system, a vertical deflection system, comprising, in combination, a plurality of series-connected vertical deflection coils, each furnishing a vertical deflection field for one of said pickup tubes; a corresponding plurality of auxiliary windings, each wound in a bifilar relationship to a corresponding vertical deflection coil; and means for furnishing correction currents separately to each of said auxiliary windings, whereby corrective magnetic fields may be superimposed upon the associated vertical deflection fields.
Claim 2
Dependent Claim
79 words
In the pickup tubes of a color television system, a vertical deflection system, comprising, in combination, a plurality of series-connected vertical deflection coils, each furnishing a vertical deflection field for one of said pickup tubes; a corresponding plurality of auxiliary windings, each wound in a bifilar relationship to a corresponding vertical deflection coil; and means for furnishing correction currents separately to each of said auxiliary windings, whereby corrective magnetic fields may be superimposed upon the associated vertical deflection fields.
Claim 3
Dependent Claim
36 words
A system as set forth in claim 1, wherein said means for furnishing correction currents separately to each of said auxiliary windings comprise means for furnishing adjustable correction currents separately for each of said auxiliary windings.
Claim 4
Dependent Claim
19 words
A system as set forth in claim 2, wherein said corrective magnetic fields comprise both unidirectional alternating magnetic fields.
Claim 5
Dependent Claim
57 words
A system as set forth in claim 1, wherein each of said vertical deflection coils is wound on a coil form; and wherein said auxiliary windings are made of wire which is substantially thinner than the wire constituting said vertical deflection coils, whereby said coil forms may remain substantially unchanged despite the addition of said auxiliary windings.
Claim 6
Dependent Claim
46 words
A system as set forth in claim 1, wherein said series-connected vertical deflection coils together have an associated series impedance; further comprising an energizing circuit for energizing said series-connected vertical deflection coils, said energizing circuit having a high internal impedance relative to said associated series impedance.
Claim 7
Dependent Claim
63 words
A system as set forth in claim 5, further comprising a resistance connected in series to said series-connected vertical deflection coils; wherein said energizing circuits supplies a sawtooth current to said series-connected resistance and vertical deflection coils, thereby causing a sawtooth voltage to appear across said resistance; and feedback circuit means for coupling said sawtooth voltage to the input of said energizing circuit.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |