Patent US6563536B1 successfully refreshed from Google Patents.
US6563536B1
Expired / Lapsed
US
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Reducing noise in an imaging system
Assignee: Intel Corp
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Filing: 1998-05-20
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Granted: 2003-05-13
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Expires: 2018-05-20
Abstract
Abstract A method includes generating a noise frame of data that is representative of a dark current image. Video frames of data are generated that represent video images. The video frames include noise. Information from the noise frame is used to compensate for the noise.
Inventors
- 👤 Oleg B. Rashkovskiy
- 👤 William W. Macy
- 👤 Ajaya V. Durg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:52
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/60; H04N25/63
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
A computer system comprising: a processor; and a memory storing a program to cause the processor to: receive a stream of video and noise frames from a camera, the stream including nonoverlapping time intervals and each nonoverlapping time interval including one of the noise frames and a different group of the video frames, average data from at least two of the noise frames together as the noise frames are received to update pixel intensity adjustment data, and for each nonoverlapping time interval, use the pixel intensity adjustment data to compensate pixel intensities indicated by the associated group of video frames.
Claim 2
Dependent Claim
100 words
A computer system comprising: a processor; and a memory storing a program to cause the processor to: receive a stream of video and noise frames from a camera, the stream including nonoverlapping time intervals and each nonoverlapping time interval including one of the noise frames and a different group of the video frames, average data from at least two of the noise frames together as the noise frames are received to update pixel intensity adjustment data, and for each nonoverlapping time interval, use the pixel intensity adjustment data to compensate pixel intensities indicated by the associated group of video frames.
Claim 3
Dependent Claim
26 words
The computer system of claim 1 , wherein the program causes the processor to substantially remove dark current noise from the associated group of video frames.
Claim 4
Dependent Claim
15 words
The computer system of claim 1 , wherein the intervals have uniform durations of time.
Claim 5
Dependent Claim
28 words
The computer system of claim 1 , wherein the program causes the processor to use the video frames to form a video on a display of the computer.
Claim 6
Dependent Claim
15 words
The computer system of claim 1 , wherein the camera automatically generates the noise frames.
Claim 7
Independent Claim
86 words
A method comprising: receiving a stream of video and noise frames from a camera, the stream including nonoverlapping time intervals and each nonoverlapping time interval including one of the noise frames and a different group of the video frames, averaging data from at least two of the noise frames together as the noise frames are received to update pixel intensity adjustment data; and for each nonoverlapping time interval, using the pixel intensity adjustment data to compensate pixel intensities indicated by the associated group of video frames.
Claim 8
Independent Claim
86 words
A method comprising: receiving a stream of video and noise frames from a camera, the stream including nonoverlapping time intervals and each nonoverlapping time interval including one of the noise frames and a different group of the video frames, averaging data from at least two of the noise frames together as the noise frames are received to update pixel intensity adjustment data; and for each nonoverlapping time interval, using the pixel intensity adjustment data to compensate pixel intensities indicated by the associated group of video frames.
Claim 9
Dependent Claim
20 words
The method of claim 6 , further comprising: substantially removing dark current noise from the associated group of video frames.
Claim 10
Dependent Claim
14 words
The method of claim 6 , wherein the intervals have uniform durations of time.
Claim 11
Dependent Claim
22 words
The method of claim 6 , further comprising: using the video frames to form a video on a display of the computer.
Claim 12
Dependent Claim
13 words
The method of claim 6 , further comprising: automatically generating the noise frames.
References Cited (Backward Citations)
US4931821A
Cited
US4739495A
Cited
US5047861A
Cited
US5550935A
Cited
US5777756A
Cited
US5608455A
Cited
US6005638A
Cited
US6061092A
Cited
US6100937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-05-12 | 2006-11-11 | 2007-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-05-12 | 2010-11-11 | 2011-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-05-12 | 2014-11-11 | 2015-05-13 | $7700.00 | Window Closed / Lapsed |