EP0447126A2
Expired / Lapsed
EP
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Method and apparatus for generating pattern
Assignee: Canon Inc
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Filing: 1991-03-07
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Granted: —
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Expires: 2011-03-07
Abstract
Abstract A character pattern generating apparatus for generating a bit map data from outline data corresponding to a pattern having a curve portion comprises: a discriminating circuit to discriminate a size of pattern data to be output; and a deciding circuit to decide whether the bit map data is generated or not by regarding the curve portion as a straight line from the outline data on the basis of the discrimination of the discriminating circuit. The curve portion is a portion to form a Bezier curve on the basis of the outline data.
Inventors
- 👤 Tsuneaki C/O Canon Kabushiki Kaisha Kurumida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 13:18
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/128; G06K2215/00; G06K2215/0002; G06K2215/004; G06K2215/0042; G06K2215/0045
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
A character pattern generating apparatus for generating a bit map data from an outline data corresponding to a pattern having a curve portion, comprising: discriminating means for discriminating a size of pattern data to be output; and deciding means for deciding whether the curve portion is regarded as a straight line from the outline data on the basis of the discrimination of said discriminating means and the bit map data is generated or not.
Claim 2
Dependent Claim
25 words
An apparatus according to claim 1, wherein the curve portion is a portion to form a Bezier curve on the basis of the outline data.
Claim 3
Dependent Claim
49 words
An apparatus according to claim 1, wherein in the case where said discriminating means discriminates that said size is smaller than a predetermined size, said deciding means regards the curve portion to be a straight line from said outline data and determines that the bit map data is generated.
Claim 4
Dependent Claim
28 words
An apparatus according to claim 1, wherein the curve portion which is regarded as a straight line is a part of the curve portion constructing the outline data.
Claim 5
Dependent Claim
19 words
An apparatus according to claim 1, wherein said pattern generating apparatus can be applied to a dot pattern printer.
Claim 6
Dependent Claim
63 words
A pattern generating method comprising the steps of: discriminating a size of pattern data to be output; and when generating a bit map data from outline data corresponding to a pattern having a curve portion, regarding the curve portion as a straight line from the outline data in accordance with said discrimination and determining whether the bit map data is generated or not.
Claim 7
Dependent Claim
52 words
A method according to claim 6, wherein in the case where it is discriminated that the size of pattern data to be output is smaller than a predetermined size, it is determined to regard the curve portion as a straight line from the outline data and to generate the bit map data.
Claim 8
Dependent Claim
28 words
A method according to claim 6, wherein the curve portion which is regarded as a straight line is a part of the curve portion constructing the outline data.
Claim 9
Dependent Claim
19 words
A method according to claim 6, wherein said pattern generating method can be applied to a dot pattern printer.
Claim 10
Dependent Claim
60 words
Apparatus or a method for generating dot pattern font data from font data defined as lines, in which curved lines in the font data defined as lines are either processed as curved lines or as one or more straight lines in the generation of the dot pattern font data in accordance with the character size of the dot pattern data.
References Cited (Backward Citations)
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