EP0551016A1
Expired / Lapsed
EP
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Image processing method and apparatus
Assignee: Canon Inc
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Filing: 1992-12-31
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Granted: —
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Expires: 2012-12-31
Abstract
Abstract An image processing apparatus adding information to read image signals and arranging a mark indicative of a position where the information is added so that the additional information can be easily extracted. An image processor processes full-color image signals from a line sensor and a binarization circuit binarizes the signals using a pseudo half-tone processing. A density judgment circuit judges the density of the image signals and controls a modulator which adds additional information. The modulator refers to the contents of a ROM and changes dot positions in the binarized image signals based on the referred information and adds the additional information to the image signals. A FIFO compensates image signals delayed by the density judgment circuit.
Inventors
- 👤 Koji C/O Canon Kabushiki Kaisha Kajita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 07:25
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/00838; H04N1/00856; H04N1/00864; H04N1/00867; H04N1/0087; H04N1/32; H04N1/32101; H04N1/32144; H04N1/32149; H04N1/32203; H04N1/32208; H04N1/32251; H04N1/32309; H04N1/32352; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3204; H04N2201/3205; H04N2201/3269; H04N2201/327; H04N2201/3271
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
78 words
An image processing apparatus comprising: generating means for generating a plurality of dot data; detecting means for detecting an interval of two dots formed in accordance with the dot data generated by said generating means; and control means for controlling the interval of the two dots, wherein the interval controlled by said control means represents a predetermined information which is not included in a dot image formed in accordance with the dot data generated by said generating means.
Claim 2
Dependent Claim
95 words
An image processing apparatus comprising: generating means for generating a plurality of kind of colour dot data dot-sequentially; detecting means for detecting an interval of two dots of the same kind of colour formed in accordance with the colour dot data generated by said generating means; and control means for controlling the interval of the two dots of the same kind of colour, wherein the interval controlled by said control means represents a predetermined information which is not included in a dot image in accordance with the colour dot data generated by said generating means.
Claim 3
Dependent Claim
60 words
An image processing apparatus comprising: generating means for generating image data; judging means for judging whether a level of the image data is in a predetermined range; adding means for adding a predetermined information on an image represented by the image data; and control means for controlling addition by said adding means in accordance with judgement by said judging means.
Claim 4
Dependent Claim
81 words
An image processing apparatus comprising: generating means for generating image data; and processing means for processing the image data generated by said generating means and outputting a reproduction signal for forming an image, wherein said processing means includes adding means for adding a predetermined information on the image and control means for controlling density of the image after the addition by said adding means so that the density of the image before the addition by said adding means is substantially preserved.
Claim 5
Independent Claim
31 words
The apparatus according to any one of the preceding claims, wherein said detecting means detects whether the interval is for an odd number of dots or an even number of dots.
Claim 6
Independent Claim
42 words
The apparatus according to any one of the preceding claims, wherein said control means controls intervals of a plurality of dots so that each of intervals of two neighboring dots is an odd number of dots or an even number of dots.
Claim 7
Independent Claim
20 words
The apparatus according to any one of the preceding claims, wherein the predetermined information is information for specifying the apparatus.
Claim 8
Independent Claim
27 words
The apparatus according to any one of the proceeding claims, wherein the predetermined information is information for specifying time and date of processing performed by the apparatus.
Claim 9
Independent Claim
19 words
The apparatus according to any one of the preceding claims, wherein the predetermined information is expressed by binary information.
Claim 10
Independent Claim
19 words
The apparatus according to any one of the preceding claims, wherein said generating means comprises a CCD line sensor.
Claim 11
Independent Claim
18 words
The apparatus according to any one of the preceding claims, wherein said generating means comprises a host computer.
Claim 12
Dependent Claim
24 words
The apparatus according to claim 1, further comprising image forming means for forming an image on a medium in accordance with the dot data.
Claim 13
Dependent Claim
81 words
An image processing method comprising: a generating step of generating a plurality of dot data; a detecting step of detecting an interval of two dots formed in accordance with the dot data generated in said generating step; and a control step of controlling the interval of the two dots, wherein the interval controlled in said control step represents a predetermined information which is not included in a dot image formed in accordance with the dot data generated in said generating step.
Claim 14
Dependent Claim
96 words
An image processing method comprising: a generating step of generating plural kinds of colour dot data dot-sequentially; a detecting step of detecting an interval of two dots of the same kind of colour formed in accordance with the colour dot data generated in said generating step; and a control step of controlling the interval of the two dots of the same kind of colour, wherein the interval controlled in said control step represents a predetermined information which is not included in a dot image in accordance with the colour dot data generated in said generating step.
Claim 15
Dependent Claim
64 words
An image processing method comprising: a generating step of generating image data; a judging step of judging whether a level of the image data is in a predetermined range; an adding step of adding a predetermined information on an image represented by the image data; and a control step of controlling addition in said adding step in accordance with judgement in said judging step.
Claim 16
Dependent Claim
85 words
An image processing method comprising: a generating step of generating image data; and a processing step of processing the image data generated in said generating step and outputting a reproduction signal for forming an image, wherein said processing step includes an adding step of adding a predetermined information on the image and a control step of controlling density of the image after the addition in said adding step so that the density of the image before the addition in said adding step is substantially preserved.
Claim 17
Dependent Claim
39 words
Image processing apparatus comprising means for generating dot data in accordance with data information in which specific information concerning the apparatus is included in the dot data in such a manner as not to degrade any image so generated.
Claim 18
Dependent Claim
23 words
Apparatus according to claim 17 in which the manner in which the specific data is generated depends on the density of data information.
References Cited (Backward Citations)
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