US4331979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line-scan still image reproducer
Assignee: RCA Corp
•
Filing: 1980-10-02
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Granted: 1982-05-25
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Expires: 2000-10-02
Abstract
Abstract A still image produced by a slide is converted into a television signal by a solid-state imager driven across the image.
Inventors
- 👤 Sidney L. Bendell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:22
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/48; H04N1/486; H04N1/488; H04N1/00127; H04N1/00281; H04N1/00283; H04N9/00; H04N9/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A method for generating a television video signal from a still image, comprising the steps of: mechanically scanning a line-scan imager across the image during a first scanning interval; generating uncorrected television signals having highlight levels established by the mechanical scan of said imager across said image during said first scanning interval; coupling said uncorrected television signals to highlight detection means for generating a highlight signal representative of the peak value attained by said uncorrected television signals during said mechanical scanning; applying said highlight signal to a light-changing means for stabilizing said peak value near a standard value; and mechanically scanning said line-scan imager across the image during a second scanning interval for generating corrected television signals in which said highlight signals are near said standard value.
Claim 2
Independent Claim
127 words
A method for generating a television video signal from a still image, comprising the steps of: mechanically scanning a line-scan imager across the image during a first scanning interval; generating uncorrected television signals having highlight levels established by the mechanical scan of said imager across said image during said first scanning interval; coupling said uncorrected television signals to highlight detection means for generating a highlight signal representative of the peak value attained by said uncorrected television signals during said mechanical scanning; applying said highlight signal to a light-changing means for stabilizing said peak value near a standard value; and mechanically scanning said line-scan imager across the image during a second scanning interval for generating corrected television signals in which said highlight signals are near said standard value.
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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) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |