US4873428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image processing apparatus using conversion means
Assignee: Canon Inc
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Filing: 1989-03-20
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Granted: 1989-10-10
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Expires: 2009-03-20
Abstract
Abstract An image processing apparatus comprises an image data generator and a characteristic converter for converting a characteristic of the image data generated by the image data generator. The characteristic converter includes a table for converting the image data in a first mode and a second table for converting in a second mode. The first and second tables are selectively used in recording one image. Data generator for generating data to be stored in the first and second conversion tables has a reference characteristic conversion table to be used as a base in generating the data.
Inventors
- 👤 Akihiko Takeuchi
- 👤 Yoji Tomoyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:50
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407; H04N1/4072; H04N1/405; H04N1/4055; H04N1/4056
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
119 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; said characteristic conversion means including a first conversion table for converting the characteristic of the image data in a first mode, and a second conversion table for converting the characteristic of the image data in a second mode different from the first mode; said first and second conversion tables being selectively used in recording one image; and data formation means for forming data to be stored in said first and second conversion tables; said data formation means having a reference characteristic conversion table to be used as a base in forming the data.
Claim 2
Dependent Claim
119 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; said characteristic conversion means including a first conversion table for converting the characteristic of the image data in a first mode, and a second conversion table for converting the characteristic of the image data in a second mode different from the first mode; said first and second conversion tables being selectively used in recording one image; and data formation means for forming data to be stored in said first and second conversion tables; said data formation means having a reference characteristic conversion table to be used as a base in forming the data.
Claim 3
Dependent Claim
43 words
An image processing apparatus according to claim 1 further comprising record means for recording the image line by line in accordance with the converted image data outputted by said characteristic conversion means; said first and second conversion tables being switched for each line.
Claim 4
Dependent Claim
53 words
An image processing apparatus according to claim 1 wherein said data formation means has first and second correction tables corresponding to said first and second conversion tables, respectively, and said reference characteristic conversion table and said first correction table are used in forming the data to be stored in said first conversion table.
Claim 5
Dependent Claim
49 words
An image processing apparatus according to claim 1 further comprising pattern signal generation means for generating a pattern signal of a predetermined period and modulation means for producing a pulse width modulated signal based on the converted image data outputted by said characteristic conversion means and said pattern signal.
Claim 6
Dependent Claim
55 words
An image processing apparatus according to claim 4 further comprising record means for recording the image on a photo-sensitive member by modulating a beam in accordance with the pulse width modulated signal outputted by said modulation means; the data stored in said first and second tables being associated with a characteristic of said photo-sensitive member.
Claim 7
Dependent Claim
124 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; said characteristic conversion means including first and second conversion tables for converting the characteristic of the image data; said first conversion table having a substantially linear input-output data conversion characteristic; said second conversion table having a different input-output data conversion characteristic than that of said first conversion table; said first and second conversion tables being selectively used in processing one image; and data formation means for forming data to be stored in said first and second conversion tables; said data formation means having a reference characteristic conversion table to be used as a base in forming the data.
Claim 8
Dependent Claim
124 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; said characteristic conversion means including first and second conversion tables for converting the characteristic of the image data; said first conversion table having a substantially linear input-output data conversion characteristic; said second conversion table having a different input-output data conversion characteristic than that of said first conversion table; said first and second conversion tables being selectively used in processing one image; and data formation means for forming data to be stored in said first and second conversion tables; said data formation means having a reference characteristic conversion table to be used as a base in forming the data.
Claim 9
Dependent Claim
43 words
An image processing apparatus according to claim 6 further comprising record means for recording the image line by line in accordance with the converted image data outputted by said characteristic conversion means; said first and second conversion tables being switched for each line.
Claim 10
Dependent Claim
54 words
An image processing apparatus according to claim 6 wherein said data formation means includes first and second correction tables corresponding to said first conversion table, and one of said first and second correction tables and said reference characteristic conversion table are used in forming the data to be stored in said first conversion table.
Claim 11
Dependent Claim
49 words
An image processing apparatus according to claim 6 further comprising pattern signal generation means for generating a pattern signal of a predetermined period and modulation means for producing a pulse width modulated signal based on the converted image data outputted by said characteristic conversion means and said pattern signal.
Claim 12
Dependent Claim
55 words
An image processing apparatus according to claim 9 further comprising record means for recording the image on a photo-sensitive member by modulating a beam in accordance with the pulse width modulated signal outputted by said modulation means; the data stored in said first and second tables being associated with a characteristic of said photo-sensitive member.
Claim 13
Dependent Claim
109 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; record means for recording an image on a record medium in accordance with the converted image data outputted by said characteristic conversion means; and signal generation means for generating a signal in association with loading of said record medium to the apparatus; said signal being associated with a characteristic of said record medium; said characteristic conversion means having a plurality of tables associated with the characteristic conversion of the image data; and one of said tables being selected in accordance with said signal.
Claim 14
Dependent Claim
109 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; record means for recording an image on a record medium in accordance with the converted image data outputted by said characteristic conversion means; and signal generation means for generating a signal in association with loading of said record medium to the apparatus; said signal being associated with a characteristic of said record medium; said characteristic conversion means having a plurality of tables associated with the characteristic conversion of the image data; and one of said tables being selected in accordance with said signal.
Claim 15
Dependent Claim
47 words
An image processing apparatus according to claim 11, further comprising pattern signal generation means for generating a pattern signal of a predetermined period and modulation means for producing a pulse-width-modulated signal based on the converted image data outputted by said characteristic conversion means and said pattern signal.
Claim 16
Dependent Claim
124 words
An image processing apparatus according to claim 11, wherein said characteristic conversion means includes a first conversion table for converting the characteristic of the image data in a first mode and a second conversion table for converting the characteristic of the image data in a second mode different from the first mode, said first and second conversion tables being selectively used in recording one image; and said apparatus further comprising data formation means for forming data to be stored in said first and second conversion tables; said characteristic conversion means having a plurality of correction tables employed to form the data of said first and second conversion tables, and said data forming means selecting one of said correction tables in accordance with said signal.
Claim 17
Dependent Claim
42 words
An image processing apparatus according to claim 12, wherein said record medium is a photo-sensitive member and said record means records the image on the photo-sensitive member by modulating a beam in accordance with the pulse-width-modulated signal outputted by said modulation means.
Claim 18
Dependent Claim
43 words
An image processing apparatus according to claim 13, wherein said record means records the image line by line in accordance with the converted image data outputted by said characteristic conversion means, and said first and second conversion tables are switched for each line.
Claim 19
Dependent Claim
97 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; record means for recording an image on a record medium in accordance with the converted image data outputted by said characteristic conversion means; signal generation means for generating a signal in association with loading of said record medium to the apparatus; and change means for changing a mode for converting the characteristic of image data by said characteristic conversion means in accordance with the signal generated by said signal generation means.
Claim 20
Dependent Claim
97 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; record means for recording an image on a record medium in accordance with the converted image data outputted by said characteristic conversion means; signal generation means for generating a signal in association with loading of said record medium to the apparatus; and change means for changing a mode for converting the characteristic of image data by said characteristic conversion means in accordance with the signal generated by said signal generation means.
Claim 21
Dependent Claim
93 words
An image processing apparatus according to claim 16, further comprising pattern signal generation means for generating a pattern signal of a predetermined period and modulation means for producing a pulse-width-modulated signal based on the converted image data outputted by said characteristic conversion means and said pattern signal wherein said record medium is a photo-sensitive member and said record means records the image on the photo-sensitive member by modulating a beam in accordance with the pulse-width-modulated signal outputted by said modulation means, and said signal is associated with a characteristic of said photo-sensitive member.
Claim 22
Dependent Claim
37 words
An image processing apparatus according to claim 16, wherein said change means has a plurality of correction tables employed to determine a characteristic conversion mode and selects one of said correction tables in accordance with the signal.
Claim 23
Dependent Claim
65 words
An image processing apparatus according to claim 16, wherein said characteristic conversion means includes a first conversion table for converting the characteristic of the image data in a first mode, and a second conversion table for converting the characteristic of the image data in a second mode different from the first mode, said first and second conversion tables being selectively used in recording one image.
Claim 24
Dependent Claim
33 words
An image processing apparatus according to claim 18, wherein said change means forms data for characteristic conversion in accordance with the selected correction table and stores the data in said characteristic conversion means.
Claim 25
Dependent Claim
45 words
An image processing apparatus according to claim 19, wherein said record means records the image line by line in accordance with the converted image data outputted by said characteristic conversion means, switching back and forth between said first and second conversion tables for each line.
Claim 26
Dependent Claim
107 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; output means for outputting a pulse-width-modulated signal in accordance with the converted image data from said characteristic conversion means; record means for recording an image on a record medium in accordance with the pulse-width-modulated signal output by said output means; signal generation means for generating a signal in association with loading of said record medium to the apparatus; and change means for changing a mode for generating a pulse-width-modulated signal in accordance with the signal generated by said signal generation means.
Claim 27
Dependent Claim
107 words
An image processing apparatus comprising: image data generation means; characteristic conversion means for converting a characteristic of image data generated by said image data generation means; output means for outputting a pulse-width-modulated signal in accordance with the converted image data from said characteristic conversion means; record means for recording an image on a record medium in accordance with the pulse-width-modulated signal output by said output means; signal generation means for generating a signal in association with loading of said record medium to the apparatus; and change means for changing a mode for generating a pulse-width-modulated signal in accordance with the signal generated by said signal generation means.
Claim 28
Dependent Claim
99 words
An image processing apparatus according to claim 22, further comprising pattern signal generation means for generating a pattern signal of a predetermined period, wherein said pulse-width-modulated signal output means produces the pulse-width-modulated signal based on the converted image data outputted by said characteristic conversion means and said pattern signal, wherein the record medium is a photo-sensitive member, and wherein said record means records the image on the photo-sensitive member by modulating a beam in accordance with the pulse-width-modulated signal outputted by said pulse-width-modulated signal output means, and wherein said signal is associated with a characteristic of said photo-sensitive member.
Claim 29
Dependent Claim
49 words
An image processing apparatus according to claim 22, wherein said change means changes a mode for converting the characteristic of image data by said characteristic conversion means in accordance with said signal generated by said signal generation means so as to vary a mode for generating a pulse-width-modulated signal.
Claim 30
Dependent Claim
43 words
An image processing apparatus according to claim 24, wherein said change means has a plurality of correction tables employed to determine a characteristic conversion mode and selects one of said correction tables in accordance with the signal generated by said signal generation means.
Claim 31
Dependent Claim
33 words
An image processing apparatus according to claim 25, wherein said change means forms data for characteristic conversion in accordance with the selected correction table and stores the data in said characteristic conversion means.
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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) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |