US4403247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state color imaging apparatus
Assignee: Panasonic Holdings Corp
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Filing: 1981-02-17
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Granted: 1983-09-06
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Expires: 2001-02-17
Abstract
Abstract In a solid state color imaging apparatus comprising a solid state photoelectric device having an array of picture elements, a color filter fixed in front of the solid state photoelectric device, the improvement is that the color filter has filter elements of a first complementary color (cy), and filter elements of a second complementary color (ye) and substantially transparent parts (tr). The apparatus has, by use of complementary color filter elements, a high light utility efficiency which is about 9 dB higher efficiency than the conventional color filter consisting of primary color filter elements, and hence has a higher S/N ratio.
Inventors
- 👤 Yoshiaki Sone
- 👤 Susumu Hashimoto
- 👤 Kiyotsugu Ishikawa
- 👤 Takao Kunii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:18
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/10; H04N25/11; H04N25/13; H04N25/135; H04N25/136; H04N25/133; H04N25/40; H04N25/44; H04N25/447; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/15; H10F39/153; H10F39/1534
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
A solid state color imaging apparatus comprising a solid state photoelectric device having an array of picture elements and output signals, a color filter fixed in front of said solid state photoelectric device, and having filter elements of a first complementary color, and filter elements of a second complementary color and substantially transparent parts, a separation circuit for analyzing said output signals of said solid state photoelectric device into a quasi-luminance signal and a color signal, a composing circuit for adding said color signal to said quasi-luminance signal thereby to furnish a luminance signal without line crawling.
Claim 2
Dependent Claim
97 words
A solid state color imaging apparatus comprising a solid state photoelectric device having an array of picture elements and output signals, a color filter fixed in front of said solid state photoelectric device, and having filter elements of a first complementary color, and filter elements of a second complementary color and substantially transparent parts, a separation circuit for analyzing said output signals of said solid state photoelectric device into a quasi-luminance signal and a color signal, a composing circuit for adding said color signal to said quasi-luminance signal thereby to furnish a luminance signal without line crawling.
Claim 3
Dependent Claim
27 words
A solid state color imaging apparatus in accordance with claim 1, wherein both luminance information and color information are sequentially issued from said solid state photoelectric device.
Claim 4
Dependent Claim
25 words
A solid state color imaging apparatus in accordance with claim 1, wherein said first complementary color is cyanic and said second complementary color is yellow.
Claim 5
Dependent Claim
64 words
A solid state color imaging apparatus in accordance with claim 1, wherein said color filter has first lines comprising said first complementary color elements and transparent elements in alternating disposition in the line, and second lines comprising said second complementary color elements and transparent elements in alternating disposition in the line, said first lines and said second lines being disposed in a repeating pattern.
Claim 6
Dependent Claim
52 words
A solid state color imaging apparatus in accordance with claim 4, wherein said separation circuit comprises a low pass filter which issues said quasi-luminance signal, a band pass filter and a delay circuit which delays the output signal of said band pass filter for a time period of one horizontal line scanning.
Claim 7
Dependent Claim
30 words
A solid state color imaging apparatus in accordance with claim 1, wherein said separation circuit comprises detector circuits, the output of which is to be given to said composing circuit.
Claim 8
Dependent Claim
19 words
A solid state color imaging appratus in accordance with claim 1, wherein the adding is always carried out continuously.
Claim 9
Dependent Claim
24 words
A solid state color imaging apparatus in accordance with claim 1, wherein said adding is carried out on every other horizontal line scanning period.
Claim 10
Dependent Claim
52 words
A solid state color imaging apparatus in accordance with claim 1, wherein said color filter has first lines comprising said transparent elements and second lines comprising said first complementary color elements and said second complementary color elements in alternating disposition, said first lines and second lines being disposed in a repeating pattern.
Claim 11
Dependent Claim
33 words
A solid state color imaging apparatus in accordance with claim 4, wherein said first lines and said second lines are disposed in a manner that transparent parts lie under the complementary color parts.
Claim 12
Dependent Claim
97 words
In a solid state color imaging apparatus comprising a solid state photoelectric device having an array of picture elements, a color filter fixed in front of said solid state photoelectric device, the improvement that said color filter has filter elements of a first complementary color, and filter elements of a second complementary color and substantially transparent parts, said color filter having first lines comprising said transparent elements and second lines comprising said first complementary color elements and said second complementary color elements in alternating disposition, said first lines and second lines being disposed in a repeating pattern.
Claim 13
Dependent Claim
97 words
In a solid state color imaging apparatus comprising a solid state photoelectric device having an array of picture elements, a color filter fixed in front of said solid state photoelectric device, the improvement that said color filter has filter elements of a first complementary color, and filter elements of a second complementary color and substantially transparent parts, said color filter having first lines comprising said transparent elements and second lines comprising said first complementary color elements and said second complementary color elements in alternating disposition, said first lines and second lines being disposed in a repeating pattern.
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) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |