US3893174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colour television receiver
Assignee: Toshiba Corp
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Filing: 1973-06-28
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Granted: 1975-07-01
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Expires: 1993-06-28
Abstract
Abstract In a colour television receiver wherein three electron beams respectively modulated by red, green and blue video signals are simultaneously deflected to display on a fluorescent screen a composite picture image of three colour picture images, there is provided a time axis converter for compressing, expanding or delaying with respect to time the image signal adapted to modulate at least one electron beam in one horizontal scanning period for different intervals so as to accurately superposing each other the multi-colour picture images over the entire surface of the fluorescent screen thus forming a multi-colour composite picture image free from any misalignment.
Inventors
- 👤 Shunichi Sano
- 👤 Koichi Kasahara
- 👤 Jr Harry C Murphy
- 👤 Harry C Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:10
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/28
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
208 words
A color television receiver comprising an in-line type color cathode ray tube including: a vacuum vessel having a neck portion and an enlarged portion, a fluorescent screen formed on the enlarged portion of said vacuum vessel and three electron guns provided in the neck portion of said vacuum vessel for emitting a center electron beam and two side electron beams, said electron guns being arranged in-line in the scanning direction of said center and two side electron beams; a deflection means mounted on the neck portion of said vacuum vessel for scanning said electron beams on said fluorescent screen; means for generating red, green and blue video signals for modulating said center and two side electron beams; and signal processing means including first means for subjecting a video signal for modulating the center beam to a fixed delay, and second means coupled to said generating means for electrically processing two video signals which are coupled to modulate said side electron beams, said second means varying a time dependent electrical characteristic of said two video signals by different amounts during a horizontal scanning period, said characteristic being varied symmetrically with respect to both the preceding and succeeding scanning time relative to a center point of said horizontal scanning period.
Claim 2
Dependent Claim
208 words
A color television receiver comprising an in-line type color cathode ray tube including: a vacuum vessel having a neck portion and an enlarged portion, a fluorescent screen formed on the enlarged portion of said vacuum vessel and three electron guns provided in the neck portion of said vacuum vessel for emitting a center electron beam and two side electron beams, said electron guns being arranged in-line in the scanning direction of said center and two side electron beams; a deflection means mounted on the neck portion of said vacuum vessel for scanning said electron beams on said fluorescent screen; means for generating red, green and blue video signals for modulating said center and two side electron beams; and signal processing means including first means for subjecting a video signal for modulating the center beam to a fixed delay, and second means coupled to said generating means for electrically processing two video signals which are coupled to modulate said side electron beams, said second means varying a time dependent electrical characteristic of said two video signals by different amounts during a horizontal scanning period, said characteristic being varied symmetrically with respect to both the preceding and succeeding scanning time relative to a center point of said horizontal scanning period.
Claim 3
Dependent Claim
18 words
A colour television receiver according to claim 1 wherein said signal processing means comprises a variable delay line.
Claim 4
Dependent Claim
18 words
A colour television receiver according to claim 1 wherein said signal processing means comprises an analogue shift register.
Claim 5
Dependent Claim
20 words
A colour television receiver according to claim 1 wherein said signal processing means comprises a divided type discontinuous delay line.
Claim 6
Dependent Claim
23 words
A colour television receiver according to claim 1 wherein said signal processing means comprises a memory device adapted to store a video signal.
Claim 7
Dependent Claim
39 words
A colour television receiver according to claim 1 wherein said three electron guns are arranged at an angle so that the cross-point of the axes of said three electron guns is located on the outside of said fluorescent screen.
Claim 8
Dependent Claim
84 words
A colour television receiver according to claim 1 wherein said signal processing means is combined with deflection means which functions such that when three electron beams are caused to scan the fluorescent screen without being processed, said three electron beams will coincide with reference to the raster scanning line, whereas with respect to a line at right angles to the scanning line, the spacings between said three electron beams will be equal from the upper edge to the lower edge of the picture image.
Claim 9
Dependent Claim
26 words
A colour television receiver according to claim 1 wherein said signal processing means converges the distortions of a picture image in addition to composing three-colour pictures.
Claim 10
Dependent Claim
25 words
A color television receiver according to claim 1 wherein said second means of said signal processing means comprises delay means for delaying said video signals.
Claim 11
Dependent Claim
35 words
A color television receiver according to claim 9 wherein said second means of said signal processing means further includes signal compression means for compressing at least one of said red, green and blue video signals.
Claim 12
Dependent Claim
35 words
A color television receiver according to claim 10 wherein said second means of said signal processing means further includes signal expansion means for expaNding at least one of said red, green and blue video signals.
Claim 13
Dependent Claim
25 words
A color television receiver according to claim 1 wherein said second means of said signal processing means includes signal compression means for compressing video signals.
Claim 14
Dependent Claim
35 words
A color television receiver according to claim 12 wherein said second means of said signal processing means further includes signal expansion means for expanding at least one of said red, green and blue video signals.
Claim 15
Dependent Claim
24 words
A color television receiver according to claim 1 wherein said second means of said signal processing means includes expansion means for expanding video signals.
Claim 16
Dependent Claim
29 words
A color television receiver according to claim 1 wherein said signal processing means includes delay means for delaying at least one of said red, green and blue video signals.
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |