JPS59123359A - Method for processing information of plotter - Google Patents

Abstract

PURPOSE:To improve the efficiency of a plotter by storing the 1st sheet of graphic information transmitted from a computer to a raster memory and transferring only a part of the 2nd and succeeding sheets different from the part of the 1st sheet to a plotter. CONSTITUTION:A vector data signal transmitted from a host computer via an external interface is converted into a raster code signal by a vector raster converter. The vector raster converter writes a raster data in the raster memory. An address controller reads contents of the raster memory in response to a DMA control signal, transmits the contents to a sequence control section, where plotting work is performed. In recording similar information, since the raster data is utilized, no transfer of a large part of the 2nd and succeeding sheets from the host computer to the plotter is required.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for transferring characters and figures [1st line] for facsimile/mm/h electrophotographic devices.

PJ: consists of 11 small files and a corresponding import file. child,
, LL Rari] Take the isomorphic from Son-il (Tsutasu ni is a plane (N11 so7) 111 Zo): According to the conditions such as Betsui of r21 or Karasu 11 revision/(-both images) ) - create an isle and perform graphics/basolo sorting on its iITii R files. At the very beginning, there is a "
The element you want to do (block lj with conditions such as rate etc.)
'l: Wholesale J-Kangu) g. i/:, changes to the lid data to unso chit which is 1 vote IN information. At this stage, the contents of the take (/i tube 1., broken lines, filled lines, etc. and their coordinates are included. Curves are treated as a series of short lines. It can be used and acted as a divination symbol.

However, in the case of Shizuichi and Bu7J Tsuta, it is necessary to enter F4 in order from the end of 1.
First of all, there is a need to change it to 1. This process involves rearranging the unsorted vector data in the input order.

The sawed vector data is finally converted to hit pattern (raster) data, and in the case of an electrostatic vector, it becomes a low bow that can be grotted, and this signal is applied to the -\ node of the block with its 1F dimension mark. J,] ] 1 () to print the mark jJII through the modulator.

As shown in FIG. 1, the image noisle from the data file is in the form H;y-11. The image 1-4 file can be converted into unsorted vector data, further into sorted vector data, and finally into raster data. On the other hand, Glossota 2 receives the unsorted vector data from the host computer, converts the unsorted vector data to sorted vector data, converts it to raster data, and outputs the plot signal. It can be used as.

Take transfer from the host computer/viewer to the plotter (can be transferred at the unsorted vector data step above, at the sorted vector take step, or as a raster take. Generally, the host computer's data processing Because it is faster than data processing within the plotter, data processing is performed in the host computer as a raster take). When capacity is no longer available, depending on the situation, the sort vector data may be transferred at the first or second stage. If the take is transferred to each processor at an intermediate stage, the subsequent data exchange process (d) is performed within the processor.

One type of recording method is the direct electrostatic recording method, in which a charge is directly applied to recording paper using a stylus or the like, and one inch is developed.
There is a 111j Tajishi transfer recording method in which a toner image is created on a photoreceptor etc. and transferred to recording paper like in an electrostatographic copying machine, and there are other methods such as the Vcothermal method and (' Il, T
/7) Photoelectric method of copying the image on silver J1.1 paper C and discharge destruction J)
There is a simple method for recording the second snowfall. Indirect electrostatic transfer method, j (2
In the 7) method, the process speed of the recording reservoir is variable, and it is possible to record while data is being transferred and processed. It is possible to store a part of the raster take in memory in 1, 1 minute,
Recording paper JE 2 minutes/2) There is no need to sip the last meal. However, in the case of the indirect electrostatic transfer recording method, once recording is started, the process is stopped at 1-pronto [' If it is interrupted, that one page will result in a recording failure.Therefore, raster take memory for at least one page will be required.Also, if the recorded content contains the same part. Even in the case where the raster take for one page is to be memorized and plotted, it is necessary to unload the data for one page to the plotter in the form of unloaded data, or
The format of the so-chit vector take is transmitted in the form of a raster take, and it is not possible to start recording (plotting) a block until after the raster take of one pixel/minute has been memorized. Therefore, it takes a long time to transfer each sheet, which slows down the plotting speed. Therefore, the indirect electrostatic transfer method has not been practical in the past.

The purpose of the present invention is to reduce the data transfer time as much as possible by using an indirect electrostatic transfer method, which has not been put to practical use in the past, and to improve the efficiency of the transfer.

(':'f) - Note f) [The figure shows the implementation of lf7 of the present invention which achieves the first objective! j3j will be explained in detail below in the ×1L example.

In FIG.

Figure] It is not possible to see the outside).
r Is I'i? It is sent in r format.

Input signal (sent as success/noted vector data, noted vector, or rask data).

The vector data is a command indicating the meaning of the vector data, a transfer take amount, and a coordinate value of the data block (X+).
-Y, take and end point coordinate value X2-Y2 data,
The bits of the X take and Y data (in the figure, the Y data shows the values of solid lines, broken lines, etc. and the take of the thickness, etc.) are about the valley line. The case U is expressed as a series of short lines.

Untended vector data allows the take of the valley line to be given arbitrarily, and sorted take arranges the data for each line in the order of the plot when plotting from one end of the recording paper. It is something.

Similarly, a raster take is made up of a string of bit signals showing a command indicating the meaning of the raster take, a transfer take amount, and a data block in this order. The cheetah block portion of the raster take will display all pixel information as a continuous line of information. When transferring this pixel information, each pixel is used as a bit signal, and the white part is displayed as a bit signal, and the black part is displayed as 1. This bit signal is displayed as 16 code symbols with 4 bits as one section, and continuous white, for example, oooo, is displayed as 0, continuous black 1111 is displayed as F, and 0 is displayed twice or more, or F is displayed twice.
If it continues more than once, the number of repeats should be inserted after each oO or FFQ to express it. When transferring the take signal, in the example in Figure 4, 03AF 0003 07F
For example, it is transferred in 16 bits in the form F 0130 010F. Here 0003. FF0I is each oo
indicates that there are 3 consecutive FFs, 24 bits of white and 8 consecutive hits of black. By using the coat signal in this way, a signal compression ratio of about 17'5 can be obtained.

When vector data is sent from the outside through an external interface, it is converted into a shirasta code signal by a vector raster converter. In this case, the processing time is the same whether the vector is sorted or unattached, so
There is no need to sort by host composition. Raster takes that are converted to size are uncompressed. An example of rask transformation is X I, Y 1 to X2. When the straight line to ¥2 is raised, the CPU determines that it is graphic information and 5. Operation instructions for vector raster comparator (for example, X2-X,
,Y2-Y.

(solid line with a thickness of 0.3 mm) and address controller 1
゛Initial address to the roller (e.g. X+, Y+)
Perform the set. 1-1 to vector raster converter;
A Ti function generator generates relative address signals of ±X and Y for the seat controller l-roller, and generates a bit signal corresponding to a width of 0°3 mm vc in the rask memory, and Then output the rasterization code and store it in the rask memory. Since this is given as a seatless signal by the address controller of the Rask memory, there are 4 people in the Rask memory that follow the above-mentioned line. When processing of all vector data is completed using the two-step method, the address controller i: is removed from the control of cpu and placed under the control of the sequence control unit, and records the contents of the rask memory in accordance with the DMA control signal. Read in order. The read signal is converted into a serial bit signal by a serial converter and sent to a sequence control section for plotting. If text information is included along with graphic information, 1. Alternatively, in the case of only character information, the CPU-based galactor generator is operated to store the information in the rask memory in the same manner as described above. When raster data is sent from an external interface, the CPU operates a raster data signal separator.

The raster data signal separator separates and processes the transfer data (I''L) and check No. 43 included in the data, and stores only the 1illii image portion in 11 parts in order in the raster memory. In this case, it is compressed. It doesn't matter if the raster data is transferred or not.In this case, the address signal is a medium increment (N).When the raster data transfer is completed, the address controller is transferred to the control of the sequence control unit. , the contents of the rask memory are read in response to the DMA control signal, but if the data is not compressed, the same as in the case of the vector data described above, and if it is compressed, the readout of the compressed portion is repeated and the uncompressed data is read. (Process of returning to Ji number) '5!' is performed. The read signal is converted into a raster bit signal by a serial converter and sent to the sequence control section.

The internal interface allows you to use the 11-tone IS (sequence system for controlling the 4 precepts) and the above information center J'!l!:
li') It inputs and outputs commands such as block start and stop of the plotter, and signals indicating the state of paper, etc. inside the machine.

Effect: Capacity to memorize at least one page worth of raster takes ■1. raster memory to raster code and serial converter,
Since the raster take converter, the key \' Ractage Generator, and the vector raster converter are installed between the raster take converter, the raster take converter, and the vector raster converter, the raster take for one page is stored, so data can also be transferred using the indirect electrostatic transfer recording method. It is now possible to record while on the go.

By providing a raster memory for a portion of the letter in this way, you want to record similar information, such as when the inside of the letter is the same but only the address is different, or when the parts diagram has the same standard but only the ζ1-method differs, as in 19. In case, the conventional method
The data that had to be transferred as a block of data for one page per sheet is the take stored in 5. Raster Take, and there is enough space for Since only the different data portions need to be transferred to the plotter, the take transfer time from the host computer to the plotter for the second and subsequent sheets can be reduced to at least 1'1, thereby greatly shortening the take transfer time.

((For example, if you consider manufacturing for A4 size, A5'1j
In the case of small recorded information such as A6 size, it becomes possible to store data for two or more sheets at the same time.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an example of the flow of processing graphic data;
FIG. 2 is a schematic explanatory diagram of the control section of the blotter according to the present invention;
FIG. 3 is a diagram showing an example of vector data, and FIG. 4 is a diagram showing an example of raster data. 1...Host computer 2...Blotter agent Patent attorney Takehisa Ito

Claims (1)

[Claims] (1) In the information processing method of an indirect electrostatic transfer blotter that records characters and figures sent from a host computer, the post computer can be used as raster data or hefter data. Marshal)? The character/figure information to be transferred to the computer is first stored in the raster memory as a raster take, and the raster take is stored in the raster memory as a raster take. As a call rasta hit message 3/-kens! I;lI sends it to the control section, and only the information on the parts after the second sheet [-] (d-1 that differs from the first sheet) is transferred from the host computer to the block-〇 control section,
The raster take of the j-th and 1ζ part that has already been stored in the raster memory and the raster take of the newly transferred/take are sent to the sister memory, and then sent to the raster dot. The block's information processing method.