JPH02278331A - Printer - Google Patents

Abstract

PURPOSE:To easily understand the contents of codes by recording character patterns and code patterns corresponding to the character codes and control codes in the case of a dump mode. CONSTITUTION:Respective patterns corresponding to plural character codes are previously registered in a character pattern memory 49, and inputted code data are interpreted so as to record a prescribed picture. On the other hand, data showing the constitution of the code corresponding to the control codes included in code data are previously stored in a read-only memory 50, and the patterns corresponding to the inputted character codes are read from the character pattern memory 49 so as to record the patterns. Then, data corresponding to the inputted control codes are read from the read-only memory 50 and respective patterns stored in the character pattern memory based on the data are combined, whereby the codes corresponding to the control codes are formed. Thus, the character codes and the control codes can easily be decoded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer device that records information for confirming input character codes and control codes.

[Conventional technology]

This type of printer device is equipped with a print mode and a dump mode. In the print mode, when code data is received from the host computer, the code data is sequentially interpreted and the result, that is, an image is recorded on recording paper. On the other hand, in the dump mode, recording is performed to confirm the contents of the input code data.

Conventionally, in the dump mode, code data was recorded in HEX display. However, in order to decipher such HEX display, it is necessary to use a correspondence table that describes the corresponding characters, symbols, etc.1. I was forced to do tedious work.

Therefore, the code corresponding to the it, II iO code included in the code data is registered in advance in the pattern memory as a pattern formed from the driver 1 to the matrix, and the control code is stored in the code registered in the pattern memory. At the same time, there was a proposal to record the character code included in the code data in a pattern corresponding to the character code, thereby making it easier to decipher the code data (Japanese Patent Application Laid-open No. 63-145048). However, since pattern memory requires a large storage capacity,
It has not been economical to provide a pattern memory for storing codes corresponding to control codes.

(Problem to be Solved by the Invention) In this way, in the conventional printer device, character codes and control codes are recorded in HEX display when in dump mode, so it is difficult to decipher such HEX display. I was forced to do a lot of work. In addition, in order to realize easy @ reading, when the control code included in the code data is recorded with a code corresponding to the control code,
the code in advance]! ! Since it required a pattern memory to record the pattern, it could not be said to be economical.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a printer device whose character code and control code can be easily decoded and which can realize a dump mode at low cost.

(Means for Solving the Problems) In the present invention, each pattern corresponding to a plurality of character codes is registered in advance in a character pattern memory, and by interpreting input code data and recording a predetermined image, The printing mode is realized, and on the other hand, data indicating the structure of the code corresponding to the control code included in the code data is stored in advance in a read-only memory, and a pattern corresponding to the input character code is read from the character pattern memory. At the same time, data corresponding to the input control code is read from the read-only memory, and each pattern stored in the character pattern memory is combined based on the data to create the criminal code. form a code corresponding to
Dump mode is realized by recording this code.

(Operation) According to the present invention, the code corresponding to the control code is formed by combining each pattern stored in the character pattern memory.For this reason, the code pattern is registered in advance. Only the data indicating the structure of the code is recorded in advance in the read-only memory.Therefore, in the read-only memory, the memory for storing the data only needs to have a capacity, and the code It is not necessary to have a large scale of writing and practice to memorize the patterns.

[Example] A detailed explanation will be given below, taking as an example the case where the present invention is applied to a laser beam printer.

FIG. 1 is a block diagram showing the outline of the laser beam printer.

This apparatus is comprised of an image supply device 1, a recording section 2, a power source 3 for driving these, and a panel 4 through which an operator inputs instructions for creating the recording section.

The image supply device 1 includes a host interface (1/F) connection terminal 5 that receives a signal for recording a predetermined image from a host computer, etc., and a LAN connection terminal 6 that connects to a local area network or the like. is provided. The recording unit 111s2 is a device that records an image corresponding to the image signal on the recording paper 7, and receives the image signal 8 and the operation command 9 from the image supply device 1, and also receives the synchronization pulse 10 for recording operation. and a status signal 11 are output to the image supply device 1.

FIG. 2 shows a perspective view of essential parts of the recording section 2 shown in FIG. 1.

Here, the laser beam 22 emitted from the laser oscillator 21 passes through a polarizer 23 , a laser beam modulator 24 , and a polarizer 25 , is reflected by a polygon mirror 26 , passes through a lens 27 , and passes through the outer peripheral surface of a photosensitive drum 28 . reach. The image signal 8 (bit stream) from the image supply device 1 in FIG. 1 is input to the laser beam modulator 24 from the terminal 29,
For example, the plane of polarization of the laser beam passing through the modulator 24 is rotated in accordance with the image signal by an electro-optic effect.

Due to this so-called electric shutter action, the black and white binary image (No. 8) is converted into an optical on/off signal of the laser beam and is irradiated onto the outer peripheral surface of the photosensitive drum 28. The laser beam 22 is rotated at a high speed, and after reflecting the laser beam 22, the arrow 31
(this direction is called the main scanning direction).

That is, while the image signal for one line is converted into an optical bit string and irradiated in a direction parallel to the rotation axis 32 of the photosensitive drum 28, the photosensitive drum 28 is moved in the direction of the arrow 33 (this direction is referred to as the 01 scanning direction). Rotate to.

In this way, an electrostatic latent image corresponding to the image to be recorded is formed on the outer peripheral surface of the photosensitive drum 28.

This electrostatic latent image passes through the developing device 34 as the photosensitive drum 28 rotates in the direction of the arrow 33. Here, toner is deposited in accordance with the electrostatic latent image. When the recording paper 7 is fed in the direction of the arrow 35 by a recording paper conveying hoe mechanism (not shown), the toner attached to the outer periphery of the photosensitive drum 28 is transferred onto the recording paper 7 by the action of the transfer 136. Recording paper 7
is further sent in the direction of arrow 35 and processed as a side dish to obtain a recorded matter.

Note that the laser beam 22 is scanned in the direction of the arrow 31 with a width that exceeds both ends of the photosensitive drum 28 . Therefore, the transfer timing of the image signal @8 is determined by detection pulses for detecting the passage of the laser beam from the scan M start sensor 37 and the scan end sensor 38.

The specific configuration of the image supply device 1 shown in FIG. 1 is shown in a block diagram in FIG.

This circuit connects a microprocessor (CPU) 42 connected to a CPU bus 41 and various interfaces (1
/F> 43 to 45, memories 46 to 50, and control blocks 51 and 52.

The interface includes a host I/F43 and a panel I
/F44 and a recording unit I/F45.

The host I/F 43 is a circuit that receives code data input from a host computer (not shown) in accordance with, for example, the R8232C standard.
4 is a circuit that relays an instruction signal 44a input from the panel 4 (FIG. 1) operated by the operator. and,
The recording unit 1/F 45 is a circuit that relays signals such as those explained in FIG. 1, which are exchanged between the image supply unit 1 and the recording unit 2.

The memory includes 4 character pattern memories, 46 bitmap memories, and random access memory (RAM>47).
, 10g memory 48, and read-only memory (R
OM>50. The character pattern memory 49 is a so-called font memory, and is a memory that stores character patterns composed of dot matrices. The pill-map memory 46 is stored in the recording section 2 (FIG. 1).
This is a circuit for storing, for example, one page of an image to be recorded on the recording paper 7 in a bitmap format. The random access memory 47 is a circuit used to store various data for the operation of the microprocessor 42 and code data input from the host r/F 43. Furthermore, the program memory 48 is a circuit that stores programs for the operation of the microprocessor 42.

Furthermore, the read-only memory 50 is connected to the host interface 43
This is a circuit that stores each data indicating the structure of each code corresponding to various control codes included in code data input from. Note that these data indicate the combination of each character pattern in the character pattern memory 49 and the reduction rate of the code formed by this combination, respectively.

Among these memories, the program memory 48, character pattern memory 49, and read-only memory 50 are removable memories, and by replacing them as necessary, various types of programs, character patterns, and codes can be used. It becomes possible to do so.

As a control block, a bitmap controller 51,
There is PTC52. The bitmap controller 51 is a circuit that controls the timing and address of access to the bitmap memory 46, and controls the transfer of image data formed in the bitmap memory 46 to the recording unit 1/F 45. 9C52 is a known programmable timer counter, which is a circuit that measures time and generates timing.

Now, in such a configuration, by operating the panel 4, it is possible to select and set either the print mode or the dump mode.

First, if the print mode is set, the host 1/F
The code data input from 43 is temporarily stored in RAM 47. The CPU 42 interprets the code data in the RAM 47, reads out the character pattern in the character pattern memory 49, stores this character pattern in the left bitmap memory 46, or stores the image pattern directly in the bitmap memory 46.
Store in.

This kind of processing! Once the image data for one page is accumulated in the bitmap memory 46, this image data is sent to the recording unit 2 via the recording unit I/F 45. The recording unit 2 records an image on the recording paper 7 based on this image data.

Therefore, in the print mode, the host I/F 43
The span etc. will be recorded as an image based on the code data input from.

Next, the case where the dump mode is set, which is the gist of this embodiment, will be described with reference to the flowchart of FIG.

First, the CPU 42 judges whether the dump mode has ended in the waiting state and judges whether the code data has been received via d3 and the host t/F 43 (
Steps 101 and 102), upon receiving the code data, the code data is temporarily stored in the RAM 47 (step 103). Then, the CPU 42 identifies the code data in the RAM 47 and determines whether this code data is a character code or a control code (step 104). Here, if the code data is a character code (step 104゜Yes), the CP
U42 reads the character pattern corresponding to the character code from the four character pattern memories and stores this character pattern in the bitmap memory 46 (step 10).
5). Further, if the code data in the RAM 47 is a control code (step 104.No>, the CPU 42 stores data indicating the code structure corresponding to the control code in the ROM 5).
0, and each character pattern to be combined based on the data is read from the four character pattern memories. Then, the CPU 42 forms the code pattern by combining the read character patterns, reduces the code pattern at the reduction rate indicated by the data, and stores it in the manual message 46 for the first character ( Step 106)
. Thereafter, the CPU 42 erases the stored code data in the RAM 47.

Therefore, if the input code data is a character code, the character pattern corresponding to the character code is read out from the character pattern memory 49 and stored in the bitmap memory 46.

Further, if the input code data is a control code, data corresponding to the control code is read from the ROM 50, each character pattern is read from the character pattern memory 49 based on this data, and the combination of these character patterns A code pattern corresponding to the control code is formed, and this code pattern is reduced and stored in the p1-map memory 46.

Next, the CPU 42 determines whether one page worth of patterns has been stored in the bitmap memory 46, that is, whether the bitmap memory 46 is full or not (step 10).
7) If the bitmap memory 46 is not full, the process returns to step 101.

In this way, the processing of steps 101 to 107 is repeated, and each time code data is input, character patterns and code patterns corresponding to the character code 33 and control code included in the code data are stored in the pip map memory 4.
6 are sequentially stored.

For example, when an instruction is given to end the dump mode by operating the panel 4, an instruction signal 44a indicating this
is input to the CPU 42 via the panel I/F 44.

When the CPU 42 receives this instruction signal, it determines that the dump mode has ended (step 101) and sends the image data in the bitmap memory 46 to the recording section 2 via the recording section 1/F45. The recording unit 2 records an image corresponding to the image data on the recording paper 7 (step 108).

Further, when the steps 101 to 107 are repeated and the pin 1 to map memories 46 become full, the C
The PU 42 determines that the bitmap memory 46 is full (step 107), sends the image data in the bitmap memory 46 to the recording section 2, and records an image corresponding to the image data on the recording paper 7 (step 107). Step 1o
9).

After this, the CPU 42 clears the image data in the bitmap memory 46 and returns to the processing from step 101.

An example of an image recorded on the recording paper 7 in such a dump mode is shown in FIG. Note that here, the HEX display, the character pattern, and the code pattern are recorded in correspondence with each other.

In the same figure, each number sequence written below "-Count -" indicates the first, second, and third column. Each number string written below "-) 1ex-" The character string is a )-IEX representation of the code data.
The character strings written below "-Ascii-" are the respective character patterns and code patterns corresponding to the -IEX display on the left.

For example, in the HEX display in the first column, the first control code "OD", the second control code "OA", the third character code I+ 4811, and the fourth character code "65" are the character pattern and code on the right. They correspond to the first code "CR", the second code "LF", the third character "H", and the fourth character 11ell in the pattern, respectively. In other words, the third character "'H" and the fourth character 110PI in the one-character pattern and the code pattern correspond to the inputted third character code "48" and fourth character code "'65"', respectively. character patterns are read from the character pattern memory 49 and each character pattern is sequentially recorded on the recording paper.The first code "'CR" in the character pattern and code pattern is the first input control code "' 00”
, and based on this data, each character "l C" is read from the character pattern memory 49.
Read out the patterns of characters II and II R11, form a code pattern corresponding to the forceps code 'OD' by combining the patterns of these characters "IC11 and II R11", and reduce this code pattern and record it on the recording paper. This is what I did. Furthermore, the second code "LF" in the character pattern and code pattern is R
Read from OM50, read each character "L" II F II pattern from four character pattern memories based on this data, and correspond to the control code "OA" by combining the patterns of these characters "L" II F +1. A code pattern is formed, and this code pattern is recorded on a recording sheet with FJ reduced.

As is clear from Fig. 5, the code data is displayed in HEX format, the character code is displayed in the character pattern corresponding to the character code, and the control code is displayed in a reduced form of the code pattern formed by the combination of character patterns. When comparing the two, it is easier to understand the content of the latter.

Furthermore, when recording a code corresponding to a control code, instead of registering the code pattern in advance and recording it,
The code pattern is formed using a character pattern corresponding to a character code based on data indicating the structure of the code, and this code pattern is recorded. This I-kome,
Data indicating the structure of the code pattern corresponding to the control code may be written and stored in the ROM 50 in advance.
0 does not require a large storage capacity to store a code pattern consisting of a dot matrix.

[Effects of the Invention] As explained above, according to the present invention, character patterns and code patterns corresponding to character codes and control codes are recorded in the dumb mode, so that it is easy to understand the contents of these codes. easy. Further, since the read-only memory only stores data for forming a code using a character pattern corresponding to a character code, the storage capacity of the read-only memory is small. Therefore, the cost of the printer device does not increase.

[Brief explanation of drawings]

FIG. 1 is a block diagram schematically showing an embodiment of a laser beam printer according to the present invention, FIG. 2 is a perspective view showing a recording section in the embodiment shown in FIG. 1, and FIG. 3 is a diagram similar to that shown in FIG. FIG. 4 is a block diagram showing the image supply device in the embodiment shown in FIG.
FIG. 5 is a diagram illustrating a recording mode in the dump mode in the embodiment shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... Image supply device, 2... Recording part, 3... Power supply, 4... Panel, 7... Recording paper, 21... Laser oscillator, 23.25... Polarizer, 24... Laser beam modulator, 26... Polygon mirror, 27...
Lens, 28...Photosensitive drum, 2...Terminal, 30
...Motor, 34...Developer, 36...Transfer compensation,
37... Scan start sensor, 38... Scan end sensor, 41... CPU bus, 42... Microprocessor, 43... Host 1 to interface, 44... Panel interface, 45... - Recording unit interface, 46... Bitmap memory, 47... Random access memory, 48... Program memory, 49.
...Character pattern memory, 50...Read only memory, 51...Bitmap controller, 52...2
Ding C6),・Zedo 1 to 1

Claims (1)

[Scope of Claims] A print mode in which respective patterns are set in advance in correspondence with a plurality of character codes, and in which code data is input, the input code data is interpreted, and a predetermined image is recorded; A printer device equipped with a dump mode for recording the contents of the code data, comprising means for registering in advance data indicating a code structure corresponding to a control code included in the code data, and a means for recording in the dump mode. , means for recording the character code in the pattern corresponding to the character code, forming the code by a combination of the patterns based on the registered data, and recording the control code in the code. A printer device comprising: