EP0388833A2
Expired / Lapsed
EP
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Optical recording system
Assignee: Hitachi Ltd
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Filing: 1990-03-19
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Granted: —
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Expires: 2010-03-19
Abstract
Abstract An optical recording system is disclosed in which input pixels (101) are recorded by controlling the quantity of light as a medium based on the input pixels. The information on the pixels surrounding at least given one of the input pixels is compared with a predetermined pattern information, and the particular pixel is accordingly subdivided into a plurality of regions for each of which the light quantity is controlled. Specifically, an optical recording system includes a recognition device (105) for recognizing at least a feature of the desired image by comparing a pixel information constituting a predetermined pattern with another pixel information making up a recording target and at least given one of the pixels with surrounding pixels, and a device (106) for determining the light quantity in a predetermined manner in accordance with the feature. The system further includes a light quantity control device including a data base (106) having stored therein a set of rules for controlling the light quantity of a given one of the input pixels in accordance with the information on the surrounding pixels.
Inventors
- 👤 Shinya Kobayashi
- 👤 Akira Shimada
- 👤 Akiyoshi Hakoyama
- 👤 Akira Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 21:06
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/128; G06K2215/00; G06K2215/0002; G06K2215/0062; G06K2215/0071; G06K2215/0074; G06K2215/0082
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
64 words
An optical recording system for recording input pixels by controlling the light quantity with light as medium based on the input pixels, wherein at least given one of the input pixels is subdivided into a plurality of regions and the light quantity is controlled for each subdivision region by comparing the information on the pixels surrounding the particular pixel with a predetermined pattern information.
Claim 2
Dependent Claim
64 words
An optical recording system for recording input pixels by controlling the light quantity with light as medium based on the input pixels, wherein at least given one of the input pixels is subdivided into a plurality of regions and the light quantity is controlled for each subdivision region by comparing the information on the pixels surrounding the particular pixel with a predetermined pattern information.
Claim 3
Dependent Claim
18 words
An optical recording system according to Claim 1, wherein the light quantity is controlled according to environmental conditions.
Claim 4
Dependent Claim
22 words
An optical recording system according to Claim 1, wherein the light quantity is controlled according to the mechanical characteristics of said system.
Claim 5
Dependent Claim
25 words
An optical recording system according to Claim 1, wherein the light quantity is controlled according to the specifications of the material of a recording medium.
Claim 6
Dependent Claim
30 words
An optical recording system according to Claim 1, wherein the light quantity is controlled for each plotting region of the image according to the layout information of the plotting region.
Claim 7
Dependent Claim
63 words
An optical recording system for recording input pixels by controlling the light quantity with light as a medium based on the input pixels, comprising light quantity control means (104, 105, 106, 107) including a data base (106) having stored therein a set of rules for controlling the light quantity of one of the input pixels as corresponding to the information on surrounding pixels.
Claim 8
Dependent Claim
63 words
An optical recording system for recording input pixels by controlling the light quantity with light as a medium based on the input pixels, comprising light quantity control means (104, 105, 106, 107) including a data base (106) having stored therein a set of rules for controlling the light quantity of one of the input pixels as corresponding to the information on surrounding pixels.
Claim 9
Dependent Claim
21 words
An optical recording system according to Claim 6, wherein said rules for controlling the light quantity are given in command form.
Claim 10
Dependent Claim
85 words
An optical recording system for forming a plurality of pixels resulting from the spatial sampling of an image and controlling the quantity of the light as a medium based on the pixels for recording, comprising pixel information including a predetermined pattern, means (105) for recognizing at least one feature of the image by comparing the pixel information with at least given one of the pixels and the surrounding pixels, and means (106) for determining the light quantity in accordance with the particular feature in advance.
Claim 11
Dependent Claim
85 words
An optical recording system for forming a plurality of pixels resulting from the spatial sampling of an image and controlling the quantity of the light as a medium based on the pixels for recording, comprising pixel information including a predetermined pattern, means (105) for recognizing at least one feature of the image by comparing the pixel information with at least given one of the pixels and the surrounding pixels, and means (106) for determining the light quantity in accordance with the particular feature in advance.
Claim 12
Dependent Claim
22 words
An optical recording system according to Claim 8, wherein an image is recorded in color in accordance with the feature pattern recognized.
Claim 13
Dependent Claim
19 words
An optical recording system according to Claim 8, wherein an image is recorded according to the feature pattern recognized.
Claim 14
Dependent Claim
165 words
An optical recording system for forming a plurality of pixels resulting from the spatial sampling of an image and controlling the quantity of the light as a medium based on the pixels for recording the image, comprising light-quantity control means including: memory means (104) for storing at least a part of the pixels; pattern recognition means (105) for extracting at least a feature of the image and producing an identifier corresponding to the feature on the basis of the relationship between at least one of the pixels stored in the memory means and the pixels in a predetermined surrounding range; a knowledge data base (106) associated with an identifier produced by the pattern recognition means and including a control function for determining the light quantity and a control variable of the control function; and drive means (107) for determining the light quantity of the optical recording system on the basis of the control function determined by the knowledge data base and the control variable thereof.
Claim 15
Dependent Claim
165 words
An optical recording system for forming a plurality of pixels resulting from the spatial sampling of an image and controlling the quantity of the light as a medium based on the pixels for recording the image, comprising light-quantity control means including: memory means (104) for storing at least a part of the pixels; pattern recognition means (105) for extracting at least a feature of the image and producing an identifier corresponding to the feature on the basis of the relationship between at least one of the pixels stored in the memory means and the pixels in a predetermined surrounding range; a knowledge data base (106) associated with an identifier produced by the pattern recognition means and including a control function for determining the light quantity and a control variable of the control function; and drive means (107) for determining the light quantity of the optical recording system on the basis of the control function determined by the knowledge data base and the control variable thereof.
Claim 16
Dependent Claim
117 words
An optical recording system for forming a plurality of pixels resulting from the spatial sampling of an image and controlling the quantity of the light as a medium based on the pixels for recording, comprising: means (105) for recognizing a feature of an image to be recorded on the basis of the data on said image; means (105) for generating an identifier corresponding to the feature; a data base (106) for generating an exposure data for exposing the light-sensitive material of the optical recording system in accordance with the identifier; driving means (107) for energizing a light source means for generating light in accordance with the pixels to be recorded on the basis of the exposure data.
Claim 17
Dependent Claim
117 words
An optical recording system for forming a plurality of pixels resulting from the spatial sampling of an image and controlling the quantity of the light as a medium based on the pixels for recording, comprising: means (105) for recognizing a feature of an image to be recorded on the basis of the data on said image; means (105) for generating an identifier corresponding to the feature; a data base (106) for generating an exposure data for exposing the light-sensitive material of the optical recording system in accordance with the identifier; driving means (107) for energizing a light source means for generating light in accordance with the pixels to be recorded on the basis of the exposure data.
Claim 18
Dependent Claim
33 words
An optical recording system according to Claim 12, wherein the exposure data generated by the data base constitutes arrays of number sampled at a frequenty high than the sampling frequency of the pixels.
Claim 19
Dependent Claim
35 words
An optical recording system according to Claim 12, wherein the exposure data generated by the data base constitutes a discrete value quantized at a density larger than the number of quantization levels of the pixels.
Claim 20
Dependent Claim
56 words
An optical recording system according to Claim 12, wherein the data stored in the data base constitutes an exposure data capable of reproducing an analog binary image produced by converting the signal of a recording image signal with a feature thereof recognized into an analog value through a low-pass spatial filter and binarizing the analog value.
Claim 21
Dependent Claim
25 words
An optical recording system according to Claim 12, wherein a separate exposure data is used for each feature when a plurality of features are extracted.
Claim 22
Dependent Claim
43 words
An optical recording system according to Claim 12, wherein the data base has stored therein an exposure data for producing a desired recording density designated by the identifier and is adapted to be searched with the recording density data as an index address.
Claim 23
Dependent Claim
30 words
An optical recording system according to Claim 17, wherein the pulse width of the exposure data signal is changed when the whole surface of the image is a uniform black.
Claim 24
Dependent Claim
95 words
An optical recording system according to Claim 17, wherein in the case where the image is a longitudinal or lateral thin line, the pulse width of the exposure data signal is changed, and at the same time the pulse width of the exposure data signal is further changed in such a manner as to expose the interior of the pixel for a longitudinal thin line while the magnitude of the pulse of the exposure data signal is changed in such a manner as to expose the interior of the pixel for a lateral thin line.
Claim 25
Dependent Claim
53 words
An optical recording system according to Claim 12, wherein the developer carried on the light-sensitive material of the optical recording system has a plurality of colors, and the exposure data signal generated by the data base has a data corresponding to each of a plurality of selected one of exposure and development processes.
Claim 26
Dependent Claim
23 words
An optical recording system according to Claim 12, wherein the sampling frequency of the pixel is different from that of the recording pixel.
Claim 27
Dependent Claim
55 words
An optical recording system of recording an input pixel by controlling the quantity of light as a medium based on the input pixel, wherein the distribution of image density in the particular pixel is determined on the basis of surrounding pixels and the scanning line density is changed between images having different scanning line densities.
Claim 28
Dependent Claim
55 words
An optical recording system of recording an input pixel by controlling the quantity of light as a medium based on the input pixel, wherein the distribution of image density in the particular pixel is determined on the basis of surrounding pixels and the scanning line density is changed between images having different scanning line densities.
References Cited (Backward Citations)
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