Patent US5757424A successfully refreshed from Google Patents.
US5757424A
Expired / Lapsed
US
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High-resolution video conferencing system
Assignee: Xerox Corp
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Filing: 1995-12-19
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Granted: 1998-05-26
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Expires: 2015-12-19
Abstract
Abstract A system enables high-resolution videoconferencing images to be transmitted, without extreme demands on bandwidth. A mosaicing camera sequentially samples a series of small portions of a general scene, and a composite image of the entire general scene is transmitted. Simultaneously, an individual small area of the general scene where high time resolution is desirable is sampled at a high time resolution by a dedicated camera. The high-time-resolution images are then patched into the composite image.
Inventors
- 👤 Ronald A. Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:06
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/14; H04N7/15; H04N7/141; H04N7/147
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
148 words
A method of transmitting an image representing a scene in real time, comprising the steps of: a mosaicing camera sampling at least a first portion and a second portion of the scene, outputting a first mosaic image and a second mosaic image, each of the first mosaic image and the second mosaic image comprising a set of pixels forming a coherent image; combining the first mosaic image and the second mosaic image whereby pixels from the first mosaic image abut pixels from the second mosaic image, yielding a coherent composite image; a first specific camera sampling a first specific portion of the scene, outputting a first specific image, the first specific image including at least a portion of the scene sampled in the first mosaic image or the second mosaic image; and substituting pixels from the first specific image into the composite image, yielding a coherent final image.
Claim 2
Independent Claim
148 words
A method of transmitting an image representing a scene in real time, comprising the steps of: a mosaicing camera sampling at least a first portion and a second portion of the scene, outputting a first mosaic image and a second mosaic image, each of the first mosaic image and the second mosaic image comprising a set of pixels forming a coherent image; combining the first mosaic image and the second mosaic image whereby pixels from the first mosaic image abut pixels from the second mosaic image, yielding a coherent composite image; a first specific camera sampling a first specific portion of the scene, outputting a first specific image, the first specific image including at least a portion of the scene sampled in the first mosaic image or the second mosaic image; and substituting pixels from the first specific image into the composite image, yielding a coherent final image.
Claim 3
Dependent Claim
55 words
The method of claim 1, further comprising the steps of the mosaicing camera sampling each of the first portion and a second portion of the scene at a first frame rate; and the first specific camera sampling the first specific portion of the scene at a second frame rate different from the first frame rate.
Claim 4
Dependent Claim
38 words
The method of claim 1, further comprising the step of deriving a patch algorithm for the first specific camera, the patch algorithm including information relating to a position of the first specific camera relative to the composite image.
Claim 5
Dependent Claim
31 words
The method of claim 3, further comprising the step of selecting pixels in the composite image to be substituted with pixels from the first specific image, based on the patch algorithm.
Claim 6
Dependent Claim
25 words
The method of claim 1, further comprising the step of positioning the mosaicing camera in a periodic sequence of predetermined positions relative to the scene.
Claim 7
Dependent Claim
35 words
The method of claim 5, further comprising the step of deriving a patch algorithm for the mosaicing camera, the patch algorithm including information relating to a position of the mosaicing camera relative to the scene.
Claim 8
Dependent Claim
53 words
The method of claim 1, further comprising the steps of transmitting pixel signals relating to the composite image; and transmitting pixel signals relating to the first specific camera; and wherein the the substituting step includes the step of substituting pixels from the first specific image into the composite image at a receiving station.
Claim 9
Dependent Claim
67 words
The method of claim 1, further comprising the steps of a second specific camera sampling a second specific portion of the scene, outputting a second specific image, the second specific image including a least a portion of the scene sampled in the first mosaic image or the second mosaic image; and substituting pixels from the second specific image into the composite image, yielding a coherent final image.
Claim 10
Dependent Claim
26 words
The method of claim 8, further comprising the step of selecting the first specific image or the second specific image for substitution into the composite image.
Claim 11
Dependent Claim
71 words
The method of claim 9, further comprising the steps of detecting image motion in either the first specific portion of the scene or the second specific portion of the scene; and selecting the first specific image or the second specific image for substitution into the composite image depending on whether image motion is detected in either the first specific portion of the scene or the second specific portion of the scene.
Claim 12
Dependent Claim
74 words
The method of claim 9, further comprising the steps of associating a microphone with each of the first specific portion of the scene or and second specific portion of the scene; and selecting the first specific image or the second specific image for substitution into the composite image depending on whether sound is detected by a microphone in either the first specific portion of the scene or the second specific portion of the scene.
Claim 13
Independent Claim
153 words
An apparatus for transmitting an image representing a scene in real time, comprising: a mosaicing camera adapted to sample at least a first portion and a second portion of the scene, outputting a first mosaic image and a second mosaic image, each of the first mosaic image and the second mosaic image comprising a set of pixels forming a coherent image; means for combining the first mosaic image and the second mosaic image whereby pixels from the first mosaic image abut pixels from the second mosaic image, yielding a coherent composite image; a first specific camera adapted to sample a first specific portion of the scene, outputting a first specific image, the first specific image including at least a portion of the scene sampled in the first mosaic image or the second mosaic image; and means for substituting pixels from the first specific image into the composite image, yielding a coherent final image.
Claim 14
Independent Claim
153 words
An apparatus for transmitting an image representing a scene in real time, comprising: a mosaicing camera adapted to sample at least a first portion and a second portion of the scene, outputting a first mosaic image and a second mosaic image, each of the first mosaic image and the second mosaic image comprising a set of pixels forming a coherent image; means for combining the first mosaic image and the second mosaic image whereby pixels from the first mosaic image abut pixels from the second mosaic image, yielding a coherent composite image; a first specific camera adapted to sample a first specific portion of the scene, outputting a first specific image, the first specific image including at least a portion of the scene sampled in the first mosaic image or the second mosaic image; and means for substituting pixels from the first specific image into the composite image, yielding a coherent final image.
Claim 15
Dependent Claim
58 words
The apparatus of claim 12, wherein the mosaicing camera is adapted to sample each of the first portion and a second portion of the scene at a first frame rate; and wherein the first specific camera is adapted to sample the first specific portion of the scene at a second frame rate different from the first frame rate.
Claim 16
Dependent Claim
37 words
The apparatus of claim 12, further comprising means for deriving a patch algorithm for the first specific camera, the patch algorithm including information relating to a position of the first specific camera relative to the composite image.
Claim 17
Dependent Claim
30 words
The apparatus of claim 14, further comprising means for selecting pixels in the composite image to be substituted with pixels from the first specific image, based on the patch algorithm.
Claim 18
Dependent Claim
24 words
The apparatus of claim 12, further comprising means for positioning the mosaicing camera in a periodic sequence of predetermined positions relative to the scene.
Claim 19
Dependent Claim
34 words
The apparatus of claim 16, further comprising means for deriving a patch algorithm for the mosaicing camera, the patch algorithm including information relating to a position of the mosaicing camera relative to the scene.
Claim 20
Dependent Claim
132 words
The apparatus of claim 12, further comprising a second specific camera adapted to sample a second specific portion of the scene, outputting a second specific image, the second specific image including a least a portion of the scene sampled in the first mosaic image or the second mosaic image; means for substituting pixels from the second specific image into the composite image, yielding a coherent final image; means for detecting image motion in either the first specific portion of the scene or the second specific portion of the scene; and means for selecting the first specific image or the second specific image for substitution into the composite image depending on whether image motion is detected in either the first specific portion of the scene or the second specific portion of the scene.
Claim 21
Dependent Claim
133 words
The apparatus of claim 12, further comprising a second specific camera adapted to sample a second specific portion of the scene, outputting a second specific image, the second specific image including a least a portion of the scene sampled in the first mosaic image or the second mosaic image; means for substituting pixels from the second specific image into the composite image, yielding a coherent final image; a microphone associated with each of the first specific portion of the scene or and second specific portion of the scene; and means for selecting the first specific image or the second specific image for substitution into the composite image depending on whether sound is detected by a microphone in either the first specific portion of the scene or the second specific portion of the scene.
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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) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |