US4851899A
Expired / Lapsed
US
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Field-sequential color television camera
Assignee: Victor Company of Japan Ltd
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Filing: 1988-05-31
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Granted: 1989-07-25
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Expires: 2008-05-31
Abstract
Abstract To prevent color turbidity due to residual image characteristics of an image sensor and to improve low color saturation due to rise-response characteristics of the image sensor, a object image to be taken is separated into three primary color images two fields by two fields for each primary color image through a color separating rotary filter; and transduced into six-field primary color image signals. Each primary color image signal obtained at each first field (this includes a preceding different-color residual image signal) is omitted, but each primary color image signal obtained at each second field (this includes a preceding same-color residual image signal) is outputted as video signals in sequence.
Inventors
- 👤 Satoru Yoshida
- 👤 Sadafumi Kanada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:46
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/80; H04N23/84; H04N23/88; H04N23/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
94 words
A field-sequential color television camera for generating primary color signals of an object image to be taken in sequence of fields, wherein a object image is separated into primary color images two fields by two fields for each primary color image before transduced into primary color image signals; and each primary color image signal transduced at each first field and including a preceding different-color residual image is omitted, while each primary color image signal transduced at each second field and including a preceding same-color residual image signal is outputted as video signals in sequence.
Claim 2
Dependent Claim
94 words
A field-sequential color television camera for generating primary color signals of an object image to be taken in sequence of fields, wherein a object image is separated into primary color images two fields by two fields for each primary color image before transduced into primary color image signals; and each primary color image signal transduced at each first field and including a preceding different-color residual image is omitted, while each primary color image signal transduced at each second field and including a preceding same-color residual image signal is outputted as video signals in sequence.
Claim 3
Dependent Claim
45 words
The field-sequential color television camera of claim 1, wherein a object image is separated into three primary color images two fields by two fields for each primary color image by color separating rotary filter formed with three pairs of continual same primary color filter segments.
Claim 4
Dependent Claim
135 words
A field-sequential color television camera comprising: (a) color separating means for separating an image of a subject to be taken into primary-color images two fields by two fields for each primary color image in time sharing manner; (b) color image detecting means for transducing the primary color images separated by said color separating means into primary color image signals, respectively; (c) scanning means for scanning said color image detecting means to generate primary color image signals in sequence of fields in synchronism with said color separating means; and (d) means for omitting each primary color image signal detected at each first field and including a preceding different-color residual image signal and selecting each primary color image signal detected at each second field and including a preceding same-color residual image signal as video signals in sequence.
Claim 5
Dependent Claim
135 words
A field-sequential color television camera comprising: (a) color separating means for separating an image of a subject to be taken into primary-color images two fields by two fields for each primary color image in time sharing manner; (b) color image detecting means for transducing the primary color images separated by said color separating means into primary color image signals, respectively; (c) scanning means for scanning said color image detecting means to generate primary color image signals in sequence of fields in synchronism with said color separating means; and (d) means for omitting each primary color image signal detected at each first field and including a preceding different-color residual image signal and selecting each primary color image signal detected at each second field and including a preceding same-color residual image signal as video signals in sequence.
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) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |