EP0253352A2
Expired / Lapsed
EP
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Graphic data processing system
Assignee: Hitachi Ltd
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Filing: 1987-07-13
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Granted: —
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Expires: 2007-07-13
Abstract
Abstract Herein disclosed is a graphic data processing system comprising: an image memory (l2) for storing a character pattern as font data composed of binary informations and for displaying the graphic data of the character pattern; first and second color registers (l407, l408) for holding color informations corresponding respectively to the "O" and "l" signals of the font data stored in the image memory (l2); data extending means (l402, l4l5) for extending the one bit of the font data, which are stored in the image memory (l2), for one word into n bits on the basis of the bit number n composing one pixel; a multiplexer (l409) for multiplexing the color informations, which are latched in the first and second color registers (l407, l408), independently at respectively corresponding bit units on the basis of the data extended by the data extending means; and means (l4l0) for masking and writing the data of the one word, which are multiplexed by the multiplexer, as the graphic data at the bit units in the image memory, whereby a plurality of pixels in one word are processed simultaneously in parallel.
Inventors
- 👤 Shigeru Matsuo
- 👤 Koyo Katsura
- 👤 Jun Sato
- 👤 Masahiko Kikuchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:09
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/02; G09G5/024
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
174 words
A graphic data processing system comprising: an image memory (l2) for storing a character pattern as font data composed of at least monochromatic informations and for storing the graphic data of the character pattern; at least first and second color registers (l407, l408) for holding color informations corresponding respectively to the "O" and "l" signals of the font data stored in the image memory; data extending means (l402, l4l5) for extending the one bit of the font data, which are stored in the image memory (l2), into n (n ≧ 2) bits on the basis of the bit number n composing one pixel; a multiplexer (l409) for selecting the color informations each of the n bits, which are latched in the first and second color registers (l407, l408), independently at respectively corresponding bit units on the basis of the data extended by the data extending means; and means (l4l0) for masking and writing the data, which are selected by the multiplexer, as the graphic data at the bit units in the image memory (l2).
Claim 2
Dependent Claim
174 words
A graphic data processing system comprising: an image memory (l2) for storing a character pattern as font data composed of at least monochromatic informations and for storing the graphic data of the character pattern; at least first and second color registers (l407, l408) for holding color informations corresponding respectively to the "O" and "l" signals of the font data stored in the image memory; data extending means (l402, l4l5) for extending the one bit of the font data, which are stored in the image memory (l2), into n (n ≧ 2) bits on the basis of the bit number n composing one pixel; a multiplexer (l409) for selecting the color informations each of the n bits, which are latched in the first and second color registers (l407, l408), independently at respectively corresponding bit units on the basis of the data extended by the data extending means; and means (l4l0) for masking and writing the data, which are selected by the multiplexer, as the graphic data at the bit units in the image memory (l2).
Claim 3
Dependent Claim
22 words
A graphic data processing system according to Claim l, wherein said font pattern is formed in (k × ℓ) binary bit patterns.
Claim 4
Dependent Claim
20 words
A graphic data processing system according to Claim l, further comprising means for designating the bit number n at will.
Claim 5
Dependent Claim
168 words
A graphic data processing system comprising: an image memory for storing a character pattern as font data composed of at least monochromatic informations and for storing the graphic data of the character pattern; at least first and second color registers for holding color informations corresponding respectively to the "O" and "l" signals of the font data stored in the image memory; data extending means for extending the m bits of the font data, which are stored in the image memory, for m pixels into m × n (n ≧ 2) bits on the basis of the bit number n composing one pixel; a multiplexer for selecting the color informations each of the n bits, which are latched in the first and second color registers, independently at respectively corresponding bit units on the basis of the data extended by the data extending means; and means for masking and writing the data, which are selected by the multiplexer, as the graphic data at the bit units in the image memory.
Claim 6
Dependent Claim
168 words
A graphic data processing system comprising: an image memory for storing a character pattern as font data composed of at least monochromatic informations and for storing the graphic data of the character pattern; at least first and second color registers for holding color informations corresponding respectively to the "O" and "l" signals of the font data stored in the image memory; data extending means for extending the m bits of the font data, which are stored in the image memory, for m pixels into m × n (n ≧ 2) bits on the basis of the bit number n composing one pixel; a multiplexer for selecting the color informations each of the n bits, which are latched in the first and second color registers, independently at respectively corresponding bit units on the basis of the data extended by the data extending means; and means for masking and writing the data, which are selected by the multiplexer, as the graphic data at the bit units in the image memory.
Claim 7
Dependent Claim
23 words
A graphic data processing system according to Claim 4, wherein said font pattern is formed in (k × ℓ ) monochromatic bit patterns.
Claim 8
Dependent Claim
20 words
A graphic data pocessing system according to Claim 4, further comprising means for designating the bit number n at will.
Claim 9
Dependent Claim
31 words
A graphic data processing system according to Claim 5, further comprising means for designating the bit number n at will so that the product on n × m may be constant.
Claim 10
Dependent Claim
180 words
A graphic data processing system comprising: a processor including: an image memory for storing a character pattern as font data composed of at least monochromatic informations and for storing the graphic data of the character pattern; at least first and second color registers for holding color informations corresponding respectively to the "O" and "l" signals of the font data stored in the image memory; data extending means for extending the one bit of the font data, which are stored in the image memory, into n (n ≧ 2) bits on the basis of the bit number n composing one pixel; a multiplexer for selecting the color informations each of the n bits, which are latched in the first and second color registers, independently at respectively corresponding bit units on the basis of the data extended by the data extending means; and means for masking and writing the data, which are selected by the multiplexer, as the graphic data at the bit units in the image memory; and an image output device for outputting image data written in said image memory.
Claim 11
Dependent Claim
180 words
A graphic data processing system comprising: a processor including: an image memory for storing a character pattern as font data composed of at least monochromatic informations and for storing the graphic data of the character pattern; at least first and second color registers for holding color informations corresponding respectively to the "O" and "l" signals of the font data stored in the image memory; data extending means for extending the one bit of the font data, which are stored in the image memory, into n (n ≧ 2) bits on the basis of the bit number n composing one pixel; a multiplexer for selecting the color informations each of the n bits, which are latched in the first and second color registers, independently at respectively corresponding bit units on the basis of the data extended by the data extending means; and means for masking and writing the data, which are selected by the multiplexer, as the graphic data at the bit units in the image memory; and an image output device for outputting image data written in said image memory.
Claim 12
Dependent Claim
22 words
A graphic data processing system according to Claim 8, wherein said font pattern is formed in (k × ℓ) binary bit patterns.
Claim 13
Dependent Claim
21 words
l0. A graphic data processing system according to Claim 8, further comprising means for designating the bit number n at will.
Claim 14
Dependent Claim
18 words
A graphic data processing system according to Claim 8, wherein said image output device is a display device.
Claim 15
Dependent Claim
17 words
A graphic data processing system according to Claim 8, wherein said image output device is a printer.
References Cited (Backward Citations)
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