JPS6352190A - Image generator - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image generation device that generates an inverted image of a composite image obtained by combining a plurality of images.

[Conventional technology]

Examples of conventional image generating devices include those shown in FIGS. 5(a) and 5(b). Figure 5 (a) shows OR circuit 1
00 to generate a composite pattern 130 by taking the logical sum of two character patterns 110 and 120,
In FIG. 5(b), an exclusive OR circuit 140 generates an inverted pattern 170 by exclusive ORing an all-black background 150 having a predetermined area and a character pattern 160 to be inverted.

According to the pattern synthesis shown in Fig. 5 (a), it is possible to suppress the increase in the number of character fonts, thereby suppressing the cost increase, and according to the pattern reversal device shown in Fig. 5 (b), By inverting the characters, you can obtain a record that emphasizes that part.

[Problem that the invention seeks to solve]

However, with conventional image generating devices, pattern composition and inversion are performed separately, which limits the ability to improve image editing functionality and flexibility.

[Means for solving problems]

The present invention has been made in view of the above, and provides an image generation device capable of generating an inverted pattern of a composite pattern obtained by combining a plurality of patterns, in order to improve the function and flexibility of image editing. It is.

Below, details of the image invention according to the present invention will be explained. explain.

〔Example〕

FIG. 1 shows an embodiment of the present invention, which includes an image signal generating device 1 (a network may be configured by a LAN) that outputs an image signal by inputting a character code from an external device such as a personal computer, and an image signal generating device 1 (a network may be configured by a LAN). a recording section 2 that receives image signals, print commands, etc. from the signal generator 1 and prints them on the recording paper S, and also provides clock signals, line synchronization signals, status signals, etc. to the image signal generator 1; , a power supply circuit 3 for supplying power to the recording section 2, etc., and a display panel 4 for operating the printer.

FIG. 2 shows the image signal generator 1, which receives a character code from an external personal computer, for example, R3232.
an interface section 11 that receives data according to the C standard, a control section 12 that performs system control, a character pattern ROM 13 that stores character patterns and pixel patterns, and an image handler 14 that inverts a composite image by an operation described later.
, a bitmap memory 15 that stores the composite image inverted by the image handler 14, a memory controller 16 that controls access timing to the bitmap memory 15, an interface section 17 that outputs an image signal to a recording section, and a display section. It has an output interface section 18 that outputs signals to the panel.

The control unit 12 includes a CPU 12a that controls various operations, a RAM 12b that temporarily records data and calculation results in various operations, and a ROM that stores various programs.
12c, a parallel input/output circuit 12d that inputs operation key signals in parallel and outputs signals to the display section in parallel, and a DMA controller 12c that performs access control in data transfer between memories.

FIG. 3 shows a means for inverting a composite image included in the image handler 14, and shows an all-black background 150 (for example, a predetermined image larger than the size of the font pattern) that the CPU 12a forms on the bitmap memo 5 by the program in the ROM 12c. the first image 16 to be composited with
an exclusive OR circuit 140 that takes an exclusive OR with 0, an inversion circuit 180 that inverts the second character pattern 120 to be synthesized, and an AND circuit that takes a logical product of the exclusive OR circuit 140 and the inversion circuit 180. It has 190.

In the above configuration, the operation will be explained as follows. When a character code is input into the interface unit 11 of the image signal generator 1 from an external personal computer,
The CPU 12a reads the character code and creates the character pattern R.
A corresponding character pattern is generated from OM13.

At the same time, when a command to invert a composite character obtained by combining the first and second characters is issued, the CPU 12a forms an entirely black background 150 of a predetermined size in a predetermined area of the bitmap memory 15 using the program in the ROM 12c. In the generation of character patterns described above, character patterns RO to 11
The exclusive OR circuit 140 included in the image handler 14 generates the first character pattern 160 to be synthesized.
takes the exclusive OR of the all-black background 150 and the character pattern 160 to generate an inverted pattern of the character pattern 1600, and transfers the inverted pattern to the bitmap memo January 5 and stores it in a predetermined area. Next, when the second character pattern 120 to be synthesized is generated, the inversion circuit 180 included in the image handler 14 outputs an inversion signal. When this inversion signal and the inversion pattern of the character pattern 160 described above are ANDed by the AND circuit 190, an inversion pattern 200 of the composite pattern of the first and second character patterns 160 and 120 is generated, and the inversion pattern 2
00 is stored in a predetermined area of the bitmap memory. Character codes serially input to the interface section 11 are sequentially subjected to predetermined processing and stored in the bitmap memory 15.
When an image for one page is formed, it is output as an image signal to the recording section 2 via the interface section 17.

FIG. 4 shows the recording unit 2, in which 20 is a laser light source that emits a laser beam 22, 21 and 25 are polarizers, 23 is a modulator having an image signal input terminal 24, 26 is a rotating polygon mirror, and 27 is an fθ lens. , 28 is a photosensitive drum, 29 is a developing device, and 3o is a transfer device.

In the recording section 2 having the above configuration, when an image signal is input from the interface section 17 to the input terminal 24 of the modulator 23, the laser beam 22 emitted from the laser beam #20
is modulated according to the image signal. This laser beam 2
2 is scan-controlled by a rotating polygon mirror 26 and exposes a photoreceptor drum 28 through an rθ lens 27. The photoreceptor drum 28 is charged before exposure, and an electrostatic latent image corresponding to the image in the bitmap memory 15 is formed on the photoreceptor drum 28 by this exposure. This electrostatic latent image is transferred to the developing machine 2.
The toner is developed by 9 and transferred onto the recording paper 5 by a transfer device 30. The toner image on the recording paper 5 is fixed by a fixing device (not shown), and recording of the image is completed.

(Effects of the Invention) As explained above, according to the image generation device of the present invention, it is possible to generate an inverted pattern of a composite pattern obtained by combining a plurality of patterns, thereby improving the function and flexibility of image editing. Can be done.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing one embodiment of the present invention. FIG. 2 is an explanatory diagram showing the image signal generation device in FIG. 1. FIG. 3 is an explanatory diagram showing a means for inverting a composite image. FIG. 4 is an explanatory diagram showing a laser recording section. FIGS. 5A and 5B are explanatory diagrams showing a conventional image composition and inversion device. Explanation of symbols 1 --- Image signal generator 2 --- Recording section 11 --- Interface section 12 --- Control section 13 --- Single character pattern ROM 14 ---
Image handler 15 ------- Bitmap memory 16 -------
Memory controller 17, 18 --- Interface unit 140 --- Alternative OR circuit 180 --- Inverting circuit 190 --- A N D circuit Patent applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Taira 1) Tadao Figure 4

Claims (1)

[Scope of Claims] An image generating device that generates a reversed image of a composite image obtained by combining a plurality of images, comprising: first means for generating a first reversed image that is a reverse of a first image to be combined; An image generating device comprising: a second means for generating the inverted image by ANDing a second inverted image obtained by inverting a second image to be combined with the first inverted image.