Patent US4652916A successfully refreshed from Google Patents.
US4652916A
Expired / Lapsed
US
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Image pick-up device
Assignee: Omron Corp
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Filing: 1984-10-12
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Granted: 1987-03-24
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Expires: 2004-10-12
Abstract
Abstract An image pick-up device for picking up the image of an object having different degrees of brightness, ranging from a low degree to a high degree. The device includes a light source for irradiating the object, an image pick-up unit for picking up an image of the object, and an optical system disposed between the object and the image pick-up unit for forming the image of the object on the image pick-up unit. A discrimination circuit designates a region of high brightness in the image of the object picked-up by the image pick-up unit, and a detection circuit detects the brightness level of a designated region of high brightness. A light transmittance changing circuit reveives a representation of the detected brightness level of the designated region of high brightness from the detection circuit responsive to a designation of a region of high brightness by the discrimination circuit and decreases the light transmittance in a region of the optical system corresponding to the designated region of high brightness in the image. The discrimination circuit includes a comparison circuit for comparing the brightness of the image of the object with a predetermined reference level to automatically designate a region of high brightness.
Inventors
- 👤 Takuji Suzaki
- 👤 Koji Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:28
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/59; G01N21/5907; G01N21/5911; H; H04; H04N; H04N23/00; H04N23/70; H04N23/75; G01N2021/5915; G01N2021/5923
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
189 words
An image pick-up device, comprising: a light source for irradiating an object; image pick-up means for picking up an image of said object; an optical system, disposed between said object and said image pick-up means for forming said image of said subject on said image pick-up means; designating means for designating a region of high brightness in said image of said object picked up by said image pick-up means; an image memory means for storing information representing said image of said object picked up by said image pick-up means; calculation means for calculating a brightness magnitude of said designated region of high brightness; writing means, receiving information representing said brightness magnitude from said calculating means, for writing said information into a portion of said image memory means corresponding to said designated region of high brightness; and light transmittance changing means connected with said optical system, for changing light transmittance in any desired region of said optical system and for decreasing light tansmittance in a region of said optical system corresponding to a said region of said image designated by said designating means as being a region of high brightness.
Claim 2
Dependent Claim
189 words
An image pick-up device, comprising: a light source for irradiating an object; image pick-up means for picking up an image of said object; an optical system, disposed between said object and said image pick-up means for forming said image of said subject on said image pick-up means; designating means for designating a region of high brightness in said image of said object picked up by said image pick-up means; an image memory means for storing information representing said image of said object picked up by said image pick-up means; calculation means for calculating a brightness magnitude of said designated region of high brightness; writing means, receiving information representing said brightness magnitude from said calculating means, for writing said information into a portion of said image memory means corresponding to said designated region of high brightness; and light transmittance changing means connected with said optical system, for changing light transmittance in any desired region of said optical system and for decreasing light tansmittance in a region of said optical system corresponding to a said region of said image designated by said designating means as being a region of high brightness.
Claim 3
Dependent Claim
39 words
An image pick-up device as in claim 1, wherein said designating means includes means for comparing a brightness level of said image of said object, with a predetermined reference level for automatically designating a said region of high brightness.
Claim 4
Dependent Claim
195 words
An image pick-up device, comprising: a light source for irradiating an object; image pick-up means for picking up an image of said object; an optical system disposed between said object and said image pick-up means for forming said image of said object on said image pick-up means; designating means for designating a region of high brightness in said image of said object picked up by said image pick-up means; detecting means for detecting a brightness level of a said designated region of high brightness; image memory means for storing information representing said image of said object picked up by said image pick-up means; writing means, receiving information representing said brightness level from said detecting means, for writing said information into a portion of said image memory means corresponding to said designated region of high brightness; and light transmittance changing means receiving a representation of said detected brightness level of said designated region of high brightness from said detection means responsive to a designation of a region of high brightness by said designating means, for decreasing light transmittance in a region of said optical system corresponding to said designated region of high brightness in said image.
Claim 5
Dependent Claim
195 words
An image pick-up device, comprising: a light source for irradiating an object; image pick-up means for picking up an image of said object; an optical system disposed between said object and said image pick-up means for forming said image of said object on said image pick-up means; designating means for designating a region of high brightness in said image of said object picked up by said image pick-up means; detecting means for detecting a brightness level of a said designated region of high brightness; image memory means for storing information representing said image of said object picked up by said image pick-up means; writing means, receiving information representing said brightness level from said detecting means, for writing said information into a portion of said image memory means corresponding to said designated region of high brightness; and light transmittance changing means receiving a representation of said detected brightness level of said designated region of high brightness from said detection means responsive to a designation of a region of high brightness by said designating means, for decreasing light transmittance in a region of said optical system corresponding to said designated region of high brightness in said image.
Claim 6
Dependent Claim
38 words
The image pick-up device as in claim 3, wherein said designating means includes means for comparing a brightness of said image of said object with a predetermined reference level to automatically designate a said region of high brightness.
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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) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |