JPS5866181A - Pattern recording device - Google Patents

Abstract

PURPOSE:To operate a printer of the raster scan system without a bulk memory, by using a character pattern generating device which takes a pattern instruction signal as the input to generate straight lines, quadratic curve, characters, etc. in a high speed. CONSTITUTION:Various instruction signals required for construction are sent from an external device 1 to an I/O port 2 and are stored temporarily in a buffer memory 3. A microprocessor 4 performs the read processing of construction data in the buffer memory 3 independently of the external device 1. That is, the microprocessor 4 reads construction data from the buffer memory 3 together with a high-speed pattern and character generator 5 and performs the operation processing of this data by software and converts this data to information of the raster scan system of straight lines, quadratic curves, or characters and stores them in a picture memory 61 or 62. A graphic printer 7 prints data in a high speed in the raster scan system by the print instruction from the microprocessor 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a figure marking device applicable to a raster scan type printer.
Printers of the Tustus-Chinese-Yang method, such as GLOSS, RI or LEZ printers, and inkjet printers, are used.

When using an XY plotter, ■Pro, ri, sequentially receives graphic command signals from a computer as line segment signals to draw between two points, and responds to this by ll! A dynamic scan method is used in which line segments are drawn sequentially. However, this method has the disadvantage that the graphic processing process takes a long time.

The performance of raster scan printers has recently improved, and it is now possible to produce products with a resolution of 10 lines/-m or more, and it can also be used to output graphics such as complex blueprints. . When using such a raster scan type printer, a scan converter is prepared, and the mocan converter is usually configured with a semiconductor memory having a capacity equivalent to the entire screen, such as a RAM. , line segment signals are sequentially converted into dot compensation 4#, thereby enabling high-speed conversion. However, the screen size is, for example, A411 [1! If it is 10 lines/mm, a large capacity of approximately 000 x 3,000-6 x 10 bits is required.

Here, the present invention utilizes a high-speed character/figure generator which takes a figure command signal as input and generates a straight line, quadratic curve character, etc. at high speed, thereby using a large capacity memory means. The present invention aims to provide a graphic recording device capable of operating a raster scan type printer.

FIG. 1 is a structural diagram showing the entire apparatus to which the apparatus according to the present invention is applied. In the figure, 1 is a comprehensive representation of external equipment such as a computer, and 2 is a command required from this external equipment 1 to record the figure.

I10 port receives constants, etc., 5 is a pack memory that temporarily stores commands, constants, etc. applied through this I10 port, 4 is a microprocessor, ROM for storing various programs, and constant work. It includes RAM as an area. 5 is a high-speed character/figure generator which can input a figure command signal and generate a figure signal such as a straight line or quadratic line character at a high speed of, for example, 2 ounces/dot to 11JI/dot or more in response to this signal. It is. This device is a DDA displacement comparison
According to the operating principle such as the Comparison Method, a straight line and a quadratic curve are output as dot positions. Note that characters and the like are stored in, for example, a ROM of a character generator, and are retrieved at high speed. 61 and 62 are both picture frames that serve as scan converters, their capacity is equivalent to 1/n of the entire screen, and signal reading and writing are performed alternately and in parallel. is a raster scan type graphic printer. I10 boat 2. Packa Memory 5. Microprocessor4. High-speed figure/character generator 51
The image memory 61, 62 and graphics printer 7 are
The device according to the present invention, which is connected to each other via a data bus DB, is equipped with a high-speed graphic/character generator 5, has a capacity equivalent to 17n of the entire screen, and can alternately perform reading and writing. A distinctive feature of the structure is that two image memories are provided for processing in parallel.

FIG. 2 and FIG. S are configuration diagrams showing an example of the graphic printer 7 used in this device. The printer shown in FIG. 2 uses a light scanning device 72 to scan laser light from a laser diode 71 onto a photosensitive drum or photosensitive paper 7.
3 and performs raster scanning here. The printer shown in FIG. 5 also has an inkjet 8
．． In this method, the drum is rotated at high speed, and at the same time, the drum is sent in a lateral force direction, and is scanned onto the inkjet recording paper 76. In both cases, the raster is modulated by an on/off signal for each line, and character eyes in the figure can be recorded at high speed by a set of dots.
The operation of the professional diagram shown in the figure will now be explained with reference to FIG.
These command signals are temporarily stored in the pack memory SK. For example, if a triangle and a quadrangle shown in FIG. 4 are to be drawn, the graphic command signals from the external device 1 are line segments AB, BC, and CA.

DE, EF, FG, and GD signals are sent. 1
The microprocessor 4 processes the plotting data in the packer memory 3 independently of the external side I. In other words, the microprocessor 4, together with the high-speed graphic/character generator 5, processes the drawing data in the packer memory 3. To read the drawing data from memory 5,
This is computed using Notware, and the image is created using 6.
One sentence is converted into 62 straight lines, quadratic curves, or character raster scan information. Image memo here! J6
Each capacitance of 1 and 62 is 1/n (in this case n-6) of the actual screen (1 page), and the conversion data to raster scan information is divided into n times by sequentially shifting the 17n screen. The results are written to the image memories 61 and 62 alternately and sequentially. Note that increasing the number of screen divisions (m) will reduce the image memory capacity, but on the other hand, the amount of memory for the breakpoints (such as M1' A2 F2"3) will increase.Therefore, n should be around 20. Appropriate.

According to the example of the figure shown in FIG.
2. C2C□, DID2. F2F3, high speed figure/
The character generation @5 is used to generate a straight line graphic signal necessary to draw a straight line connecting each line segment, and this is stored in the picture editor 61 as the information in the drawing. Next, on the screen, line segment A2A3. c3c2. D2E and FF2 are used as straight line figure signals necessary to draw a straight line connecting each line segment using the high speed figure/character generator 5, and these are stored in the first party memo 962 as rask scan information. Here, while the screen mark is stored in the first memory 62, the raster scan signal corresponding to the screen mark is sent to the microprocessor in the first memory 61 as well.
The signal is output to the graphics printer 7. The writing of data to one memory ends before the output from the other image memory is completed.

Thereafter, in the same manner, signals for generating figures are outputted from the high-speed figure/character generator 1 for the screens w, V, 1, and these signals are alternately written into the 1-me memories 61 and 62,
Furthermore, raster scan signals are read out alternately from the one-time memories 61 and 62. The graphics printer can perform high-speed printing using a raster scan method and create hard copies in response to print commands from the microprocessor t4.

FIG. 5 is a diagram showing an example of a hard copy by the raster scan type printer 7, and as shown in the figure, various characters and figures are drawn at high speed as a collection of dots. As explained above, according to the present invention, the resolution can be improved by increasing the number of rasters.
It is possible to realize a graphic recording device that can operate a raster-in-yang printer using a graphic command signal without using a large-capacity memory means.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the overall configuration of the device to which the device according to the present invention is applied, and FIGS. 2 and 3 are configuration diagrams showing an example of a printer used in this device.
FIG. 4 is an explanatory diagram for explaining the operation of the apparatus of the present invention, and FIG. 5 is a diagram illustrating an example of a bird beetle using a raster scan type printer. 1...External device, 2...I10 boat,.../<
, 7 memory, 4...i microprocessor, tl 5...
・High-speed figure/character generator, 41.62...I@image memory, 7...Graphic memory. 7th 14th

Claims (1)

[Claims] (1) A high-speed character/figure generator that inputs figure command signals from an external device and generates figure signals such as straight lines, quadratic curves, etc. in response to these signals, and has a capacity of 1/a of the actual screen. Manually input the signals from the high-speed character/figure generator alternately and sequentially! One memory is provided, which is connected to a high-speed character/graphics generator, a high-speed character/graphics generator, and a high-speed character/graphics generator which inputs the data scan signal to be output alternately from this picture plane. It is equipped with a micro-goo and seven Vs to control these.