US4819084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for printing the frame of a color television by using the liquid crystal filter
Assignee: Samsung Electronics Co Ltd
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Filing: 1988-01-11
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Granted: 1989-04-04
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Expires: 2008-01-11
Abstract
Abstract There is disclosed a method for printing the frame of a color television by using the liquid crystal color filter. The liquid crystal color filter serves to form the frame of complementary colors. Projecting the light beams of a light source on said frame of complementary colors of said liquid crystal color filter makes the original colors reappear, thereby the frame being printed on a printout paper.
Inventors
- 👤 Kwan Bark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:10
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/19; H04N1/195; H04N1/024; H04N1/032; H04N1/036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A method of printing a frame of a color television image, comprising the steps of: applying via a decoder a composite video signal to one input terminal of a switch, and an R. G. B. signal to another input terminal of the switch, to form an output signal; converting the output signal by an A/D converter into a digital signal; storing the digital signal in a memory as a frame signal, depending on an address designated by a memory controller which is controlled by an address controller supplied with the output signal of said switch; retrieving the frame signal from said memory by a liquid crystal controller depending on the output of said address controller and applying the frame signal to a liquid crystal color filter to form on said filter a frame of complementary colors; transforming the frame of complementary colors into an image with the original colors of said television frame by projecting light beams of a light source on said filter; and focussing the image via a lens onto instant printout paper.
Claim 2
Independent Claim
175 words
A method of printing a frame of a color television image, comprising the steps of: applying via a decoder a composite video signal to one input terminal of a switch, and an R. G. B. signal to another input terminal of the switch, to form an output signal; converting the output signal by an A/D converter into a digital signal; storing the digital signal in a memory as a frame signal, depending on an address designated by a memory controller which is controlled by an address controller supplied with the output signal of said switch; retrieving the frame signal from said memory by a liquid crystal controller depending on the output of said address controller and applying the frame signal to a liquid crystal color filter to form on said filter a frame of complementary colors; transforming the frame of complementary colors into an image with the original colors of said television frame by projecting light beams of a light source on said filter; and focussing the image via a lens onto instant printout paper.
References Cited (Backward Citations)
US4003081A
Cited
US4605972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |