Patent US3560646A successfully refreshed from Google Patents.
US3560646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reading device employing an enclosure for a light source and the document to be read and having a highly light reflective internal surface
Assignee: Farrington Electronics Inc
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Filing: 1969-02-20
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Granted: 1971-02-02
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Expires: 1989-02-20
Abstract
Abstract A reading device is disclosed wherein the document to be read is passed through one side of an enclosure, the side walls of which are provided with a highly light reflective surface. At the opposite side of the enclosure is provided a scanning light source such as produced by a cathode ray tube. Disposed within the disclosure is at least one light sensitive device such as a phototube for receiving the light which is reflective surface, the efficiency of the scanning operation is significantly increased.
Inventors
- 👤 George L Buc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:25
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/1092; G06V; G06V10/00; G06V10/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
Scanning apparatus for use with automatic character sensing equipment and the like to scan areas of a character-bearing document at a reading station through which the document is fed comprising electronic tube scanning means for optically imaging on the character-bearing areas within the reading station a progressive scanning pattern of light energy to be advanced in successive patterns across the character-bearing area during advancement of the characters, electrical output producing means responsive to the reflected light originating in the scanning pattern and reflected from said area for detecting changes in the amount of light energy reflected from the character-bearing area, means for substantially enclosing a space common to at least a face of the electronic tube scanning means a face of the electrical output producing means and a portion of the characterbearing document at the reading station, the inner surface of said enclosure means comprising a highly reflective mat surface to significantly increase the light signal interrupted by said electrical output producing means responsive to light.
Claim 2
Dependent Claim
166 words
Scanning apparatus for use with automatic character sensing equipment and the like to scan areas of a character-bearing document at a reading station through which the document is fed comprising electronic tube scanning means for optically imaging on the character-bearing areas within the reading station a progressive scanning pattern of light energy to be advanced in successive patterns across the character-bearing area during advancement of the characters, electrical output producing means responsive to the reflected light originating in the scanning pattern and reflected from said area for detecting changes in the amount of light energy reflected from the character-bearing area, means for substantially enclosing a space common to at least a face of the electronic tube scanning means a face of the electrical output producing means and a portion of the characterbearing document at the reading station, the inner surface of said enclosure means comprising a highly reflective mat surface to significantly increase the light signal interrupted by said electrical output producing means responsive to light.
Claim 3
Dependent Claim
18 words
Scanning apparatus as in claim 1 where substantially all of said inner surface is covered with white paint.
Claim 4
Dependent Claim
204 words
Scanning apparatus for use with automatic character sensing equipment and the like to scan areas of a character-bearing document at a reading station through which the document is fed comprising optical scanning means for imaging on the character bearing areas within the reading station a progressive scanning pattern of light energy to be advanced in successive patterns across the character-bearing area during advancement of the characters, photocell means for producing output electrical signals bearing a selected relation to the light intensity to which the photocell means is exposed, means for substantially enclosing a space common to at least a part of the optical scanning means the photocell means and a portion of the character-bearing document at the reading station thereby exposing said photocell means to a portion of the reflecting light originating in the scanning patterns and reflected from the character-bearing area for detecting changes in the amount of light energy reflected from the character-bearing area, thE inner surface of said enclosure means comprising a highly reflective mat surface to redirect on to the photocell means an increased portion of the reflecting light originating in the scanning patterns and reflected from the character-bearing area significantly increasing the electrical output signals of the photocell means.
Claim 5
Dependent Claim
204 words
Scanning apparatus for use with automatic character sensing equipment and the like to scan areas of a character-bearing document at a reading station through which the document is fed comprising optical scanning means for imaging on the character bearing areas within the reading station a progressive scanning pattern of light energy to be advanced in successive patterns across the character-bearing area during advancement of the characters, photocell means for producing output electrical signals bearing a selected relation to the light intensity to which the photocell means is exposed, means for substantially enclosing a space common to at least a part of the optical scanning means the photocell means and a portion of the character-bearing document at the reading station thereby exposing said photocell means to a portion of the reflecting light originating in the scanning patterns and reflected from the character-bearing area for detecting changes in the amount of light energy reflected from the character-bearing area, thE inner surface of said enclosure means comprising a highly reflective mat surface to redirect on to the photocell means an increased portion of the reflecting light originating in the scanning patterns and reflected from the character-bearing area significantly increasing the electrical output signals of the photocell means.
Claim 6
Dependent Claim
18 words
Scanning apparatus as in claim 1 where substantially all of said inner surface is covered with white paint.
Claim 7
Dependent Claim
20 words
The combination recited in claim 4 wherein said optical scanning means comprises a cathode ray tube and focusing lens means.
Claim 8
Dependent Claim
259 words
Scanning apparatus for use with automatic character sensing equipment and the like to scan areas of a character-bearing document at a reading station through which the document is fed comprising cathode ray tube scanning means and a focusing lens for optically imaging on the character-bearing areas within the reading station a progressive scanning pattern of light energy to be advanced in successive patterns across the character-bearing area during advancement of the characters, photocell means for producing output electrical signals bearing a selected relation to the light intensity to which the photocell means is exposed, first enclosure means for substantially enclosing a space common to at least the focusing lens the photocell means and a portion of the character-bearing document at the reading station thereby exposing said photocell means to a portion of the reflecting light originating in the scanning patterns and reflected from the character-bearing area for detecting changes in the amount of light energy reflected from the character-bearing area to produce intercept and nonintercept scan signals respectively denoting the presence and absence or portions of the character intercepting scan pattern, second enclosure means for substantially enclosing a space common to at least the focusing lens and the face of the cathode ray tube and having a dark inner surface, the inner surface of said first enclosure means comprising a highly reflective mat surface to redirect on to the photocell means an increased portion of the reflecting light originating in the scanning patterns and reflected from the character-bearing area significantly increasing the electrical output signals of the photocell means.
Claim 9
Dependent Claim
259 words
Scanning apparatus for use with automatic character sensing equipment and the like to scan areas of a character-bearing document at a reading station through which the document is fed comprising cathode ray tube scanning means and a focusing lens for optically imaging on the character-bearing areas within the reading station a progressive scanning pattern of light energy to be advanced in successive patterns across the character-bearing area during advancement of the characters, photocell means for producing output electrical signals bearing a selected relation to the light intensity to which the photocell means is exposed, first enclosure means for substantially enclosing a space common to at least the focusing lens the photocell means and a portion of the character-bearing document at the reading station thereby exposing said photocell means to a portion of the reflecting light originating in the scanning patterns and reflected from the character-bearing area for detecting changes in the amount of light energy reflected from the character-bearing area to produce intercept and nonintercept scan signals respectively denoting the presence and absence or portions of the character intercepting scan pattern, second enclosure means for substantially enclosing a space common to at least the focusing lens and the face of the cathode ray tube and having a dark inner surface, the inner surface of said first enclosure means comprising a highly reflective mat surface to redirect on to the photocell means an increased portion of the reflecting light originating in the scanning patterns and reflected from the character-bearing area significantly increasing the electrical output signals of the photocell means.
Claim 10
Dependent Claim
18 words
Scanning apparatus as in claim 6 where substantially all of said inner surface is covered with white paint.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |