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US4907076A Expired / Lapsed US ⏱️ 0.0 years remaining

Color balance processing apparatus wherein color component signals are corrected through comparison with a reference value

Assignee: Canon Inc
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Filing: 1989-06-15
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Granted: 1990-03-06
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Expires: 2009-06-15
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Abstract

Abstract A color image information processing apparatus includes a plurality of color separation circuits for separating input information into image information for the respective colors on the basis of constants and a CPU for comparing the image information for each color with a predetermined value, wherein each separation circuit changes a corresponding constant in accordance with the result of the comparison by the CPU.

Inventors

  • 👤 Hidefumi Ohsawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 00:34
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; H04N1/6016

Claims Analysis

Total Claims: 35
Claim 1
Independent Claim 90 words
A processing apparatus comprising: input means for inputting color image information, said input means inputting a plurality of color component signals; a plurality of processing means for processing each color component signal by mixing said plurality of color component signals at a rate corresponding to a predetermined constant; and comparison means for comparing a level of each color component signal, processed by said processing means, with a predetermined value, wherein said plurality of processing means changes the constant in accordance with the results of the comparison by said comparison means.
Claim 2
Dependent Claim 90 words
A processing apparatus comprising: input means for inputting color image information, said input means inputting a plurality of color component signals; a plurality of processing means for processing each color component signal by mixing said plurality of color component signals at a rate corresponding to a predetermined constant; and comparison means for comparing a level of each color component signal, processed by said processing means, with a predetermined value, wherein said plurality of processing means changes the constant in accordance with the results of the comparison by said comparison means.
Claim 3
Dependent Claim 43 words
A processing apparatus according to claim 1, wherein said input means includes a plurality of input units and said comparison means compares the level of each color component signal with a corresponding predetermined value for each color of said plurality of input units.
Claim 4
Dependent Claim 21 words
A processing apparatus according to claim 2, wherein each of said input unit includes a reader for reading a color image.
Claim 5
Dependent Claim 29 words
A processing apparatus according to claim 3, wherein said apparatus is for processing an original document and said readers are arranged in a predetermined direction of the original document.
Claim 6
Dependent Claim 21 words
A processing apparatus according to claim 1, wherein each of said color component signals represents density information for each color component.
Claim 7
Independent Claim 105 words
An apparatus comprising: a plurality of converting sensor parts for converting a color image into a plurality of color component signals by dividing the color image into different portions, each of said sensor parts having plural kinds of color filters and respectively converting the different portions of the color image; means for simultaneously correcting a color balance among the respective output color component signals output from said plurality of sensor parts; and control means for controlling said correcting means such that the color balance of the output color component signals corresponding to at least two of said plurality of sensor parts being substantially the same.
Claim 8
Independent Claim 105 words
An apparatus comprising: a plurality of converting sensor parts for converting a color image into a plurality of color component signals by dividing the color image into different portions, each of said sensor parts having plural kinds of color filters and respectively converting the different portions of the color image; means for simultaneously correcting a color balance among the respective output color component signals output from said plurality of sensor parts; and control means for controlling said correcting means such that the color balance of the output color component signals corresponding to at least two of said plurality of sensor parts being substantially the same.
Claim 9
Dependent Claim 28 words
An apparatus according to claim 6, wherein said control means includes means for comparing a plurality of output levels of said sensor parts with a common predetermined level.
Claim 10
Dependent Claim 24 words
An apparatus according to claim 7, wherein said correcting means corrects the color balance in accordance with a compared result of said comparing means.
Claim 11
Dependent Claim 22 words
An apparatus according to claim 6, wherein said plurality of converting sensor parts respectively have color filters having the same transmittance characteristics.
Claim 12
Dependent Claim 16 words
An apparatus according to claim 9, wherein said color filters include red, green and blue filters.
Claim 13
Dependent Claim 20 words
An apparatus according to claim 6, wherein said correcting means performs correction by mixing said plurality of color component signals.
Claim 14
Dependent Claim 31 words
An apparatus according to claim 6, wherein said apparatus is for processing an original document, and said plurality of sensor parts are arranged in a predetermined direction of the original document.
Claim 15
Dependent Claim 30 words
An apparatus according to claim 6, further comprising: means for reproducing as a visible image the color component signals, the color balance of which is controlled by said control means.
Claim 16
Dependent Claim 13 words
An apparatus according to claim 13, wherein said reproducing means includes printing means.
Claim 17
Dependent Claim 154 words
A color image pickup apparatus comprising: (a) means for converting a color image into a plurality of color component signals by dividing the color image into different portions, said converting means being divided into a plurality of sensing parts, and each part having plural kinds of color filters, and said plurality of sensing parts converting the different portions of the color image; (b) means for readng said plurality of color component signals from said converting means; (c) means for causing said reading means to operate when said converting means converts a predetermined color image; (d) means for detecting a level corresponding to said color component signal; and (e) means for simultaneously controlling a color balance of said plurality of color component signals in accordance with a detection by said detecting means, such that the color balance of the respective color component signals of each of said plurality of sensing parts being substantially the same.
Claim 18
Dependent Claim 154 words
A color image pickup apparatus comprising: (a) means for converting a color image into a plurality of color component signals by dividing the color image into different portions, said converting means being divided into a plurality of sensing parts, and each part having plural kinds of color filters, and said plurality of sensing parts converting the different portions of the color image; (b) means for readng said plurality of color component signals from said converting means; (c) means for causing said reading means to operate when said converting means converts a predetermined color image; (d) means for detecting a level corresponding to said color component signal; and (e) means for simultaneously controlling a color balance of said plurality of color component signals in accordance with a detection by said detecting means, such that the color balance of the respective color component signals of each of said plurality of sensing parts being substantially the same.
Claim 19
Dependent Claim 18 words
An apparatus according to claim 15, wherein said plurality of sensing parts are arranged in a predetermined direction.
Claim 20
Dependent Claim 21 words
An apparatus according to claim 15, wherein said plurality of sensing parts respectively have color filters having the same transmittance characteristic.
Claim 21
Dependent Claim 16 words
An apparatus according to claim 17, wherein said color filters include red, green and blue filters.
Claim 22
Dependent Claim 29 words
An apparatus according to claim 15, wherein said controlling means includes mixing means for mixing at least two of said plurality of color component signals at a predetermined rate.
Claim 23
Dependent Claim 19 words
An apparatus according to claim 15, wherein said predetermined color image is a predetermined color portion of a document.
Claim 24
Dependent Claim 30 words
An apparatus according to claim 15, further comprising: means for reproducing as a visible image the color component signals the color balance of which is controlled by said control means.
Claim 25
Dependent Claim 13 words
An apparatus according to claim 21, wherein said reproducing means includes printing means.
Claim 26
Dependent Claim 91 words
A color image information processing apparatus comprising: (a) a plurality of input units for inputting color image information, each of said units inputting a plurality of color component signals and said plurality of input units respectively inputting the plurality of color component signals which are obtained by respectively dividing different portions of a color image; and (b) adjust means for simultaneously correcting the color component signals output from said plurality of input units, said adjust means performing correction using a common reference value with respect to said plurality of input units.
Claim 27
Dependent Claim 91 words
A color image information processing apparatus comprising: (a) a plurality of input units for inputting color image information, each of said units inputting a plurality of color component signals and said plurality of input units respectively inputting the plurality of color component signals which are obtained by respectively dividing different portions of a color image; and (b) adjust means for simultaneously correcting the color component signals output from said plurality of input units, said adjust means performing correction using a common reference value with respect to said plurality of input units.
Claim 28
Dependent Claim 29 words
An information processing apparatus according to claim 23, wherein said adjust means performs adjust in accordance with a comparison result between said color component signals and said reference value.
Claim 29
Dependent Claim 20 words
An information processing apparatus according to claim 23, further comprising: (c) indication means for indicating adjustment of said adjust means.
Claim 30
Dependent Claim 26 words
An information processing apparatus according to claim 23, wherein each of said input units is a color sensor for converting radiation into said color component signals.
Claim 31
Dependent Claim 43 words
An information processing apparatus according to claim 23, wherein said adjust means further comprises mixing means for mixing said plurality of color component signals at an initial predetermined rate so as to adjust said color component signals by subsequently changing the initial rate.
Claim 32
Dependent Claim 32 words
An information processing apparatus according to claim 23, further comprising: means for reproducing as a visible image the color component signals, the color balance of which is controlled by said control means.
Claim 33
Dependent Claim 15 words
An information processing apparatus according to claim 28, wherein said reproducing means includes printing means.
Claim 34
Dependent Claim 23 words
An information processing apparatus according to claim 23, wherein at least one of said input units inputs a dot sequential color component signal.
Claim 35
Dependent Claim 21 words
An information processing apparatus according to claim 30, wherein said plurality of input units input a dot sequential color component signal.

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Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-03-05 1993-09-04 1994-03-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-03-05 1997-09-04 1998-03-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-03-05 2001-09-04 2002-03-06 $7700.00 Window Closed / Lapsed

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