US5014133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telecine with improved blemish concealment
Assignee: Cintel International Ltd
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Filing: 1989-10-27
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Granted: 1991-05-07
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Expires: 2009-10-27
Abstract
Abstract In a method of converting an optical signal into an electronic video signal by means of cathode ray tube (`CRT`) scanning means, each image is scanned in a plurality of scanning operations with each scanning operation using a different area of the screen of the CRT scanning means and the signals resulting from the plurality of scanning operations are combined to provide the electronic video signal. Light from the CRT scanning means is passed through deflection means operable to deflect light from respective ones of the plurality of different areas of the screen of the CRT scanning means along the same path into an objective lens so that the same area of a film gate positioned in the optical path beyond the objective lens is scanned in each scanning operation. The output of the CRT scanning means is monitored by means of a photoelectric device operable to provide an output signal when a blemish is detected on the screen of the CRT scanning means. The output signal is applied to an analog-to-digital converter used to process the electronic video signal to cause the video signal level immediately prior to detection of the blemish to be maintained while the blemish persists.
Inventors
- 👤 Ronald W. J. Mumford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:51
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/36; H04N5/00; H04N5/222; H04N5/253
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
93 words
A method of converting an image into an electronic video signal, the method comprising the steps of: scanning the image by means of cathode ray tube (`CRT`) scanning means having a screen; the image being scanned in a plurality of temporally successive scanning operations with each temporally successive scanning operation using a different area of the screen of the CRT temporally scanning means than the immediately preceding scanning operation; and combining signals resulting from the plurality of temporally successive scanning operations using a recursive filter storage means to provide the electronic video signal.
Claim 2
Independent Claim
93 words
A method of converting an image into an electronic video signal, the method comprising the steps of: scanning the image by means of cathode ray tube (`CRT`) scanning means having a screen; the image being scanned in a plurality of temporally successive scanning operations with each temporally successive scanning operation using a different area of the screen of the CRT temporally scanning means than the immediately preceding scanning operation; and combining signals resulting from the plurality of temporally successive scanning operations using a recursive filter storage means to provide the electronic video signal.
Claim 3
Dependent Claim
70 words
The method of claim 1, further comprising the step of deflecting the light generated by the CRT scanning means by a different amount during each successive one of the temporally successive scanning operations in such a manner that the path of the light, after deflection, is identical for each temporally successive scanning operation despite the fact that different areas of said screen are scanned during each temporally successive scanning operation.
Claim 4
Dependent Claim
81 words
The method of claim 1, the method further comprising the steps of: monitoring the output of said CRT scanning means by means of a photoelectric device operable to provide an output signal when a blemish is detected on said screen of said CRT scanning means; and applying said output signal to an analogue-to-digital converter used to process said electronic video signal to cause the video signal level immediately prior to detection of said blemish to be maintained while said blemish persists.
Claim 5
Dependent Claim
119 words
Apparatus for use in converting an image into an electronic video signal, the apparatus comprising: CRT scanning means having a screen; a film gate; an objective lens for focussing light from the CRT scanning means onto said film gate; and deflection means disposed in the light path between said CRT scanning means and said objective lens; said deflection means being operable to sequentially deflect light from respective ones of a plurality of different areas of the screen of the CRT scanning means along the same path into the objective lens; photosensitive means for receiving said sequentially deflected light and for generating successive output signals as a function thereof; and recursive filter storage means for combining said successive output signals.
Claim 6
Dependent Claim
119 words
Apparatus for use in converting an image into an electronic video signal, the apparatus comprising: CRT scanning means having a screen; a film gate; an objective lens for focussing light from the CRT scanning means onto said film gate; and deflection means disposed in the light path between said CRT scanning means and said objective lens; said deflection means being operable to sequentially deflect light from respective ones of a plurality of different areas of the screen of the CRT scanning means along the same path into the objective lens; photosensitive means for receiving said sequentially deflected light and for generating successive output signals as a function thereof; and recursive filter storage means for combining said successive output signals.
Claim 7
Dependent Claim
107 words
Telecine apparatus, comprising: CRT scanning means having a screen; a film gate; an objective lens for focussing light from said CRT scanning means onto said film gate; and deflection means disposed in the light path between said CRT scanning means and said objective lens; said deflection means being operable to sequentially deflect light from respective ones of a plurality of different areas of said screen of said CRT scanning means along the identical path into said objective lens; photosensitive means for receiving said sequentially deflected light and for generating successive output signals as a function thereof; and recursive filter storage means for combining said successive output signals.
Claim 8
Dependent Claim
107 words
Telecine apparatus, comprising: CRT scanning means having a screen; a film gate; an objective lens for focussing light from said CRT scanning means onto said film gate; and deflection means disposed in the light path between said CRT scanning means and said objective lens; said deflection means being operable to sequentially deflect light from respective ones of a plurality of different areas of said screen of said CRT scanning means along the identical path into said objective lens; photosensitive means for receiving said sequentially deflected light and for generating successive output signals as a function thereof; and recursive filter storage means for combining said successive output signals.
Claim 9
Dependent Claim
42 words
The apparatus of claim 5, in which said deflection means includes a plate of transparent material of a uniform thickness and mounted for pivoting movement about an axis transverse to the light path between the CRT scanning means and the objective lens.
Claim 10
Dependent Claim
110 words
Telecine apparatus comprising: CRT scanning means having a screen; a film gate; an objective lens for focusing light from said CRT scanning means onto said film gate; deflection means disposed in the light path between said CRT scanning means and said objective lens; said deflection means being operable to deflect light from respective ones of a plurality of different areas of said screen of said CRT scanning means along the identical path into said objective lens, said deflection means including a plate of transparent material of uniform thickness and mounted for pivoting movement about an axis transverse to the light path between the CRT scanning means and the objective lens.
Claim 11
Dependent Claim
110 words
Telecine apparatus comprising: CRT scanning means having a screen; a film gate; an objective lens for focusing light from said CRT scanning means onto said film gate; deflection means disposed in the light path between said CRT scanning means and said objective lens; said deflection means being operable to deflect light from respective ones of a plurality of different areas of said screen of said CRT scanning means along the identical path into said objective lens, said deflection means including a plate of transparent material of uniform thickness and mounted for pivoting movement about an axis transverse to the light path between the CRT scanning means and the objective lens.
Claim 12
Independent Claim
158 words
A method of converting an image into an electronic video signal, the method comprising the steps of: scanning the image by means of a cathode ray tube (CRT) scanning means having a screen; the image being scanned in a plurality of temporally successive scanning operations with each temporally successive scanning operation using a different area of the screen of the CRT scanning means than the immediately preceding temporally successive scanning operation; combining the signals resulting from the plurality of temporally successive scanning operations to provide the electronic video signal; monitoring the output of the CRT scanning means by means of a photoelectric device operable to provide an output signal when a blemish is detected on the screen of the CRT scanning means; and applying the output signal to an analog-to-digital converter used to process the electronic video signal to cause the video signal level immediately prior to detection of the blemish to be maintained while the blemish persists.
Claim 13
Independent Claim
158 words
A method of converting an image into an electronic video signal, the method comprising the steps of: scanning the image by means of a cathode ray tube (CRT) scanning means having a screen; the image being scanned in a plurality of temporally successive scanning operations with each temporally successive scanning operation using a different area of the screen of the CRT scanning means than the immediately preceding temporally successive scanning operation; combining the signals resulting from the plurality of temporally successive scanning operations to provide the electronic video signal; monitoring the output of the CRT scanning means by means of a photoelectric device operable to provide an output signal when a blemish is detected on the screen of the CRT scanning means; and applying the output signal to an analog-to-digital converter used to process the electronic video signal to cause the video signal level immediately prior to detection of the blemish to be maintained while the blemish persists.
Claim 14
Independent Claim
85 words
A method for processing an electronic video signal in telecine apparatus, the method comprising the steps of: monitoring the output of a CRT scanning means by means of a photoelectric device operable to provide an output signal when a blemish is detected on a screen of the CRT means; and applying the output signal to an analogue-to-digital converter used to process an electronic video signal to cause the video signal level immediately prior to detection of said blemish to be maintained while said blemish persists.
Claim 15
Independent Claim
85 words
A method for processing an electronic video signal in telecine apparatus, the method comprising the steps of: monitoring the output of a CRT scanning means by means of a photoelectric device operable to provide an output signal when a blemish is detected on a screen of the CRT means; and applying the output signal to an analogue-to-digital converter used to process an electronic video signal to cause the video signal level immediately prior to detection of said blemish to be maintained while said blemish persists.
Claim 16
Dependent Claim
72 words
Apparatus for processing an electronic video signal, comprising: CRT scanning means; a photoelectric device operable to provide an output signal when a blemish is detected on the screen of CRT scanning means; and an analogue-to-digital converter used to process the electronic video signal; said output signal being applied to said analogue-to-digital converter to cause the video signal level immediately prior to detection of the blemish to be maintained while the blemish persists.
Claim 17
Dependent Claim
72 words
Apparatus for processing an electronic video signal, comprising: CRT scanning means; a photoelectric device operable to provide an output signal when a blemish is detected on the screen of CRT scanning means; and an analogue-to-digital converter used to process the electronic video signal; said output signal being applied to said analogue-to-digital converter to cause the video signal level immediately prior to detection of the blemish to be maintained while the blemish persists.
Claim 18
Independent Claim
79 words
A method of converting an optical signal into an electronic video signal, the method comprising the steps of: scanning an image by means of a cathode ray tube ("CRT") scanning means, said image being scanned in a plurality of scanning operations with each scanning operation using a different area of the screen of said CRT scanning means; and combining signals resulting from said plurality of scanning operations using a recursive filter storage means to provide an electronic video signal.
Claim 19
Independent Claim
79 words
A method of converting an optical signal into an electronic video signal, the method comprising the steps of: scanning an image by means of a cathode ray tube ("CRT") scanning means, said image being scanned in a plurality of scanning operations with each scanning operation using a different area of the screen of said CRT scanning means; and combining signals resulting from said plurality of scanning operations using a recursive filter storage means to provide an electronic video signal.
Claim 20
Independent Claim
145 words
A method of converting an optical signal into an electronic video signal, the method comprising the steps of: scanning an image by means of a cathode ray tube ("CRT") scanning means having a screen; said image being scanned in a plurality of scanning operations with each scanning operation utilizing a different area of the screen of the CRT scanning means; combining signals resulting from a plurality of sequential scanning operations to provide an electronic video signal; monitoring the output of said CRT scanning means by means of a photoelectric device operable to provide an output signal when a blemish is detected on said screen of said CRT scanning means; and applying said output signal to an analogue-to-digital converter used to process said electronic video signal to cause the video signal level immediately prior to detection of said blemish to be maintained while said blemish persists.
Claim 21
Independent Claim
145 words
A method of converting an optical signal into an electronic video signal, the method comprising the steps of: scanning an image by means of a cathode ray tube ("CRT") scanning means having a screen; said image being scanned in a plurality of scanning operations with each scanning operation utilizing a different area of the screen of the CRT scanning means; combining signals resulting from a plurality of sequential scanning operations to provide an electronic video signal; monitoring the output of said CRT scanning means by means of a photoelectric device operable to provide an output signal when a blemish is detected on said screen of said CRT scanning means; and applying said output signal to an analogue-to-digital converter used to process said electronic video signal to cause the video signal level immediately prior to detection of said blemish to be maintained while said blemish persists.
Claim 22
Dependent Claim
124 words
Apparatus for use in converting between electronic video signals and images on film, said apparatus comprising: CRT scanning means having a screen; a film gate; an objective lens for focusing light from said CRT scanning means onto said film gate; deflection means disposed in the light path between said CRT scanning means and said objective lens; said deflection means being operable to deflect light from respective ones of a plurality of different areas of said screen of said CRT scanning means along the identical path into said objective lens, said deflection means including a plate of transparent material of uniform thickness and being mounted for pivoting movement about an axis transverse to the light path between the CRT scanning means and the objective lens.
Claim 23
Dependent Claim
124 words
Apparatus for use in converting between electronic video signals and images on film, said apparatus comprising: CRT scanning means having a screen; a film gate; an objective lens for focusing light from said CRT scanning means onto said film gate; deflection means disposed in the light path between said CRT scanning means and said objective lens; said deflection means being operable to deflect light from respective ones of a plurality of different areas of said screen of said CRT scanning means along the identical path into said objective lens, said deflection means including a plate of transparent material of uniform thickness and being mounted for pivoting movement about an axis transverse to the light path between the CRT scanning means and the objective lens.
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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) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |