JPH0827613B2 - Character output device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention visibly outputs a character designated by character code data given by an output command in various data processing devices, for example, it is displayed on a multi-digit type display device. The present invention relates to a character output device for doing.

Generally, one character (one character) is displayed on each digit of a multi-digit type display device, for example, a multi-digit type fluorescent display tube. Therefore, if the display device has, for example, 20 digits, the maximum
Since it is possible to display 20 characters,
All specified characters can be displayed by including the character code data that specifies 20 or less characters.

However, in the case of displaying one character over two or more digits, for example, as described in the applicant's patent application (1) “Hangul character generation method” (April 15, 1987) (Japanese Patent Laid-Open No. 63-256989). Display one Hangul character in section 2
When the number of digits or three digits is displayed, the number of digits of the character code included in the display command does not match the number of digits when displayed on the display device. If so, it may not be possible to display all of the characters specified by the character code data included in the display command.

For some characters, it is absolutely necessary to display them. If such indispensable characters cannot be displayed, the display itself becomes meaningless.

SUMMARY OF THE INVENTION The present invention is a character that can always output a specific character even if all the characters specified by a character code included in an output command such as a display command cannot be output to an output device. An object is to provide an output device.

The character output device according to the present invention should output an output device having a predetermined range for representing a character, a series of character code data representing a character to be output, and a specific character prior to other characters. When outputting a character represented by the series of character code data described above, all the characters represented by the series of character code data contained in the output command are described above. When output cannot be performed within the range, output control means for controlling the characters specified by the priority information so as to preferentially output within the range by deleting some of the other characters Is.

Therefore, even if all the characters specified by the output command cannot be output within the output range of the output device, at least the characters specified by the priority information take precedence, that is, some other characters are deleted. By doing so, it will be output at all costs. Characters that are absolutely essential to output are always output, so that even a device having a small character output area can function sufficiently as an output device.

Moreover, even if all the characters can be output within the above range of the output device, if the characters specified by the priority information are output to the predetermined partition, the output position of the specific character can be specified in all cases. It is possible to unify the output and to make the output easy to see.

Description of Embodiments An embodiment in which the present invention is applied to display of Hangul characters in an electronic cash register (ECR) will be described in detail.

(1) Structure of ECR Figure 1 shows the appearance of the ECR. ECR1 is a cash box 2 with a cash drawer that is installed at the bottom of the ECR1 and has a cash drawer that can be opened and closed.
Display 3 for operator for displaying price, total amount, amount paid by customer, change, etc., display for customer arranged opposite to this display 3 and for displaying similar transaction data Vessel 4, transaction data as described above is printer 5
Issue port for receipts printed by (See Fig. 2) 5
a, keyboard 6 for entering department code, product code, amount, quantity, and other transaction information, and credit card
It is provided with a card insertion port 7a for inserting the card for individual verification or validity inspection of the card.

FIG. 2 shows the electrical configuration of the above ECR1. ECR1
The overall operation of the registration process in is controlled by the main CPU 11, and the main CPU 11 is provided with a ROM 12 storing the execution program thereof and a RAM 13 for storing data necessary for the registration process and other data. Further, the main CPU 11 is connected to the keyboard 6 and a card reader / writer 7 for reading the data recorded on the credit card and writing the data if necessary.

The operator display 3, the customer display 4 and the printer 5 are controlled by the sub CPUs 31, 41 and 51, respectively. Display commands and print commands, which will be described later, are given from the main CPU 11 to these sub CPUs 31, 41, 51, respectively. sub
ROMs 32, 42, 5 that function as character generators that generate display or print dot patterns for CPUs 31, 41, 51
2 and RAMs 33, 43, 53 for storing commands given from the main CPU 11 and other data. Sub CPU
31, 41 analyzes the display command including the character code given by the main CPU 11 as described later, and
The dot pattern in 2,42 is used to control the display of Hangul characters and mixed alphabet and number information. The sub CPU 51 also analyzes the print command given in the same manner and performs print processing.

FIG. 3 shows an example of the display panel 34 provided in each of the displays 3 and 4. On the display panel 34, a plurality of display sections 35 are arranged in a horizontal row. One letter (alphabet), numeral (one-digit number from 0 to 9), symbol, etc. is displayed in one section 35, so one display section 35 is called one digit. The display panel 34 can be configured by a liquid crystal display by arranging a plurality of dot display tubes (for example, a fluorescent display tube) side by side and by other dot displays.

FIG. 4 is an enlarged view of the display section 35 for one digit of the 5 × 7 dot display. This display area 35 has 35 dots of S1 to S35 arranged in 5 dots horizontally and 7 dots vertically.
It consists of segment 36.

The display area 35 need not be limited to 5 × 7 dots. For example, 7 × 9 may be used, or another arbitrary dot arrangement can be adopted.

In the following description, the operation of the display having the display section 35 of 5 × 7 dots will be described as an example, but it goes without saying that an arbitrary dot arrangement can be used. The dot pattern stored in the ROM 32, 42 may be slightly modified according to the dot arrangement on the display.

(2) Generation of Hangul characters and command format Hangul characters are used as a consonant.
It consists of 21 pieces of vowels, 21 vowels (hereinafter simply referred to as vowels), and 27 patches (final consonants) as consonants + vowels and consonants + vowels + patchums. Consonant +
A combination of vowels constitutes 399 characters, and a combination of consonants + vowels + patchums constitutes 10,773 characters. The total number of these combinations is 11,172.

In this combination, consonants are placed on the left or top and vowels are placed on the right or bottom. The patchum is always placed under the consonant + vowel Hangul.

Hangul characters and English alphabets, numbers, symbols, etc. (these are abbreviated as alphanumeric characters) are displayed on the displays 3 and 4. One Hangul character is designated by 16 bits, and one alphanumeric character is designated by 8 bits.

FIG. 5 (A) shows the format of the Hangul character designation code. The most significant bit (15th bit) is a classification code for identifying Hangul characters or alphanumeric characters,
If this bit is 1, it is a Hangul character, and if it is 0, it is an alphanumeric character (although the alphanumeric code is composed of 8 bits as described later). The other 15 bits are from the upper 5
It is used to specify consonant, vowel and patchum bit by bit. That is, the 14th to 10th bits are consonant codes, the 9th to 5th bits are vowel codes, and the 4th and 0th bits are patchum codes.
The possible range of these codes is shown in FIG. 5 (B). Since there are 19 types of consonants as described above, these are designated by the codes 00001 to 10011 ($ 01 to $ 13 in hexadecimal notation). There are 21 vowels, so the code is 00001 to 1
It is specified by 0101 ($ 01 to $ 15 in hexadecimal notation). There are 27 types of patchmes, so of the codes 00000 to 11111 (hexadecimal expression $ 00 to $ 1F), hexadecimal expression $ 10, $ 11, $ 13, $
Specified by 27 codes except 00 and $ 1F. The patchum has the same consonant and letter in 16 of them, so its dot pattern is shared with the consonant, as will be seen later. Of the 19 consonants, only 3 are consonants that cannot be patchum, and these are specified by the codes $ 10, $ 11, and $ 13, so these codes are excluded. Also, $
When it is 00, $ 1F, it is considered that there is no patch.

In this way, 11,172 Hangul characters can be specified by the amount of information of 16 bits.

FIG. 6 (A) shows a code format for designating alphanumeric characters. ASCII code for alphanumeric characters or JIS
In the 7-unit code, all alphanumeric characters are represented by 7 bits. The most significant bit (7th bit) is always 0. In this embodiment, such a conventional code system is used as it is. That is, the most significant bit 0 of the 8-bit alphanumeric code represents the alphanumeric character with the classification code,
Specify the alphanumeric characters with the other 7 bits. The range of this alphanumeric code is 00000000 to 01111111 ($ 00 in hexadecimal notation)
~ $ 7F).

FIGS. 7, 8 and 9 show actual consonant vowels, vowel vowels and patchum vowels designated by the above-mentioned consonant 9 aud, vowel chords and patchum chords. In these figures, the 5-bit code is divided into upper 1 bit and lower 4 bits, and these are represented by hexadecimal numbers.

Consonants are placed to the left or above in the composition of Hangul characters as described above. All consonants may be placed on the left and may be placed on top. Consonants when placed to the left in the structure of Hangul characters are called side consonants and abbreviated as CV. The consonant placed on top is called the upper consonant and is abbreviated as CH (see FIG. 7).

Vowels are placed to the right or below in the composition of Hangul letters. Referring to FIG. 8, chord $ placed to the right of the consonant
The vowels of 01 to $ 04 and $ 0A to $ 0E are named vertical vowels and are abbreviated as VV. The vowels with codes $ 05 to $ 09 placed under the consonants are named horizontal vowels and are abbreviated as VH. In addition, there are vowels composed of vertical vowels and horizontal vowels. It's code $ 0F ~
It is specified by $ 15, and in order to distinguish it from what is generally called a compound vowel, it is named here as a compound vowel and is abbreviated as VH + VV.

In general, 10 vowels with codes $ 01 to $ 0A are called basic vowels, and 11 vowels with $ 0B to $ 15 are called compound vowels. There are two types of compound vowels, one composed of a combination of basic vowels and the other composed of a combination of a compound vowel and a basic vowel. A compound vowel is used as a term mainly referring to the latter (with some exceptions). A patchum is formed by a combination of a consonant and a consonant (codes $ 01 to $ 0F, $ 12) and two consonants. There is an available patchum (code $ 14 to $ 1E), and the latter will be called the Toul patchum. Both abbreviations are CP.

As described above, one display section 35 in the display panel 34 is composed of the dot segments 36 of 5 dots in the horizontal direction and 7 dots in the vertical direction. Since the number of dots is small, one Hangul character can be displayed in one display section 35. May not be. Therefore, when it is not possible to display in one display section, one Hangul character is displayed in two display sections or three display sections. Generally, it is difficult to read when displaying over two or three display sections, but the device is designed to maintain the optimum display quality so that it is as easy to read as possible.

FIG. 10 shows that 11,172 all Hangul characters are classified into 9 types of display patterns in consideration of the limit of the number of dots of the display 5 × 7 and the Hangul character pattern. Further, FIG. 11 shows the classification of display patterns based on vowels. This classification table is stored in ROM 32 or 42.

Referring also to FIG. 3, patterns 4 and 5 show combinations that can be displayed in one display section. Patterns 1, 2, 6, 7, and 8 are combinations that can be displayed in two display areas,
Symbols 9 and 9 respectively indicate Hangul character patterns displayed over three display sections.

From the Hangul character display pattern shown in Fig. 10, what consonant vowel dot pattern, vowel vowel dot pattern, can be stored in the ROM32, 42 that functions as a character generator.
Understand that it is necessary to create the patch pattern mother dot pattern in advance.

Referring to this figure, the side consonant CV among the consonants is the vertical vowel VV.
Used in combination with (VV ₁ , VV ₂ ) (Display pattern 1
3). For side consonants CV, it is sufficient if there is only one type of dot pattern for each character, and for 19 side consonants CV, the example is first
This is shown in Fig. 2 (A).

Upper consonant CH (CH ₁ , CH ₂ ) is a horizontal vowel VH (VH ₁ , VH ₂ , V
H _3, VH ₄₎ the combination is used (display pattern 4-9,
Especially display patterns 4-6). A standard dot pattern is created for 19 upper consonants as shown in FIG. 12 (B). This is called upper consonant CH ₁ . Depending on how they are combined, a dot pattern with a small number of vertical dots may be required (for example, display pattern 5). Therefore, in addition to the standard dot pattern above, As shown in the figure, another type of dot pattern is created in advance. This is called upper consonant CH ₂ .

For consonants, even if it is a side consonant CV, the upper consonant CH
However, (CH ₁ and CH ₂ ) are specified by the same code (see FIG. 7).

With regard to the dot patterns of the 9 vertical vowels VV (display patterns 1 to 3), in order to obtain the optimum display quality, _one with a large number of vertical dots (this is VV ₁ ) and _one with a small number of vertical dots (this is VV ₁ ) ₂ ) and two types have been created. An example thereof is shown in FIG. 12 (C).

Regarding horizontal vowels VH (display patterns 4 to 6), four types are created depending on the number and position of dots in the vertical direction, an example of which is shown in FIG. 12 (D). these
Differentiate using VH ₁ , VH ₂ , VH ₃ , and VH ₄ . There are five horizontal vowels, but not all of them have four types of dot patterns, and they are set as needed.

As described with reference to FIG. 8, the vertical vowels and the horizontal vowels have different designation codes.

The vowels of display patterns 7 to 9 are compound vowels (code $ 0F
~ $ 15; see Fig. 8), it can be decomposed into horizontal vowels VH and vertical vowels VV, and can be displayed by a combination of these VH + VV.
For example, in display patterns 7 and 9, VH ₁ or VH ₂ + VV
₁ , VH ₁ or VH ₂ + VV ₂ in pattern 8. Therefore, no dot pattern has been created for compound vowels.

The patchum CP is located below the vertical vowel (display pattern 2,
8) or the position to the right of the Hangul characters (display pattern 3,6,9)
Placed in. For the 27 patchmes including the Toul patchum, as shown in FIGS. 12 (E) and (F), for the standard dot pattern (CP ₁ ) and the specific 5 patchmes, Dot pattern with a small number of vertical dots (CP ₂
And)) is defined.

The 109 dot patterns shown in FIGS. 12A to 12F are stored in advance in the ROMs 32 and 42 (and the ROM 52) functioning as the character generator. Figure 13 shows the relationship between these dot patterns and codes. A circle indicates that there is a dot pattern. The numbers in parentheses indicate the number of dots that occupy the vertical direction (hereinafter referred to as the vertical dot number). Sub chords are used to distinguish between two types of upper consonants, two types of vertical vowels, four types of horizontal vowels, and two types of patchums. The data indicating the number of vertical dots shown in parentheses is also stored in advance in the ROM in the form of a table.
In FIG. 13, for convenience of tabulation, some chords and patchums are shown with common chords and Hangul letters.

As described above, since the dot pattern of the compound vowel is created by the combination of the horizontal vowel and the vertical vowel, the dot pattern of the compound vowel is not stored in the ROM. Instead of this, a combination table of horizontal vowels and vertical vowels is created in advance as shown in FIG. 14 and is set in the ROMs 32 and 42 in order to generate a dot pattern of compound vowels.

(3) General display processing Fig. 15 shows the format of the display (or print) command given to the sub CPU 31 or 41 by the main CPU 11.
And the characters instructed from this command are displayed (printed)
This is what is done. In the display command, a code (character code data) that specifies the character to be displayed after the command code is arranged in the order of the display position. As described above, one Hangul character is designated by a 2-byte (16-bit) code, and alphanumeric characters are designated by a 1-byte (8-bit) code. Generally, Hangul characters and alphanumeric characters are mixed in the character code data. Moreover, the number of bytes is different between the Hangul character code and the alphanumeric code. Therefore, the sub CPU 31 or 41
Must first distinguish between Hangul and alphanumeric characters when it receives a display command.

When the display command is sent from the main CPU 11, it is temporarily stored in the RAM 33 or 43 connected to the sub CPU 31 or 41 or another suitable buffer. An address pointer is used for designating this store location, and the address pointer designates the location of 1 byte as one unit. For simplification of explanation, as shown in the middle part of FIG. 15, the address point of the storage location of the first 1 byte of the character code data in the display command is 0, and the next 1 byte of data is stored. It is assumed that 1 byte of store locations are consecutively numbered as address points, such as 1.

FIG. 22 shows a process of discriminating Hangul characters from alphanumeric characters in a display command executed by the sub CPU 31 or 41.

The address pointer is first initialized and set to a value indicating the address point (ie 0) of the first store location (step 101). From the point indicated by this address pointer, it is checked whether the most significant bit of 2-byte code data is 0 or 1 (step 102).
As described with reference to FIG. 5 and FIG. 6, the most significant bit is the partition code, and if this partition code is 1, the 2-byte code data including it is the Hangul character, 0 In the case of, the 1-byte code data including it indicates alphanumeric characters.

If the most significant bit is 1, it is determined to be a Hangul character code, and the code range that this code can take is $ 8420.
It is checked whether it is between ~ $ CEBF (steps 104, 105). If it is within this range, it is determined that it is a Hangul character code and that fact is stored in a predetermined area of RAM 33 or 43 (step 106). If it is outside the above range, it is determined that it is an undefined code. The same is stored in RAM (step 107). After this, the address pointer is incremented by +2, the process returns to step 102, and similar processing is repeated.

If the most significant bit is 0, it is determined to be an alphanumeric code and that fact is stored in RAM (step 109), the address pointer is incremented by 1 (step 110), and step 102 is entered.
Return to

When the analysis of all the character code data in the display command is completed by repeating the above processing (step 111), this determination processing ends.

Based on the result of this analysis, the process of generating the dot pattern represented by each code is proceeded to, and the combination of Hangul characters and alphanumeric characters as shown in the bottom of FIG. 15 is displayed on the display 3 or 4. Will be done.

It is sufficient to display one designated alphanumeric character in one display section 35 at a designated position, so that it can be performed in a conventionally known manner. Of course, alphanumeric dot patterns are also stored in ROM 32 or 42.

The dot pattern generation and display process for Hangul characters is rather complicated, and a part of the process procedure is shown in FIG. This processing is executed by the sub CPU 31 or 41.

A 2-byte (16-bit) character code determined to be a Hangul character code by the above analysis process is read into a buffer or the like, and this is read as a classification code (1 bit), consonant code (5 bits), vowel code (5 (Bit 12) and patchum code (5 bits) decomposition (step 12)
1). The state of this decomposition process is shown in the upper and middle sections of FIG. If the 2-byte Hangul character code is $ 843F in hexadecimal notation, the consonant code is $ 01, the vowel code is $ 01, and the patchum code is $ 1F.

Next, by decoding the patch code, it is determined whether or not there is a patch (step 122). The possible range of the patch code is $ 01 to $ 0F, $ 1 as shown in Fig. 9.
Since it is 2, $ 14 to $ 1E, it is sufficient to inspect whether it is within this range. Since the code $ 1F is not within the above range, it is determined that there is no patch.

In the case of no patchum, referring to FIG. 11, the displayed pattern types are patterns 1, 4 or 7 and these are classified by the type of vowel. Therefore, the type of vowel indicated by the vowel code is checked (step 123),
If the vowel code is a vertical vowel, the display pattern 1 is generated (step 124); if it is a horizontal vowel, the display pattern 4 is generated (step 125); if it is a compound vowel, the display pattern 7 is generated. (Step 126).

In the example shown in FIG. 16, since the vowel code 9 is a vertical vowel, the display processing of the display pattern 1 (step 12
4) is performed. This process is the simplest. Two display sections 35 in the display panel 34 are used. The first display section has a dot pattern indicated by a consonant code, and the second display section has two types of dots specified by a vowel code. • Of the patterns, pattern VV ₁ is displayed. Consonant code $ 01, Vowel code $ 01
A display example in the case of is shown in the lower part of FIG.

The display pattern 4 is divided into two patterns. It is a combination of the upper consonant CH ₁ and the horizontal vowel VH ₁ (this is called pattern 4-1), and a combination of the upper consonant CH ₁ and the horizontal vowel VH ₂ (this is called pattern 4-2). These two nine display patterns are shown in FIG.

The vertical bit number of the upper consonant CH ₁ is, as can be seen from FIG. 13,
3 or 4. On the other hand, the horizontal vowel VH ₁ has 3 or 1 vertical bits. Therefore, in any combination of the upper consonant CH ₁ and the horizontal vowel VH ₁ , the total vertical bit number does not exceed 7 which is the vertical bit number of the display section 35, and all Hangul characters in pattern 4 are basically The display pattern 4-1 can be displayed.

However, in the combination of the upper consonant code $ 04, $ 0C or $ 0E and the horizontal vowel code $ 07 or $ 08, the character generated by combining dot pattern CH ₁ and VH ₁ is very It becomes hard to see. Therefore, instead of the dot pattern VH ₁ for horizontal vowels, the dot pattern VH 2 having a vertical bit number of ₂ is used. Then, one dot space is placed between the upper consonant dot pattern CH ₁ of the upper half and the horizontal vowel dot pattern VH ₂ of the lower half. This is the display pattern 4-2.

Therefore, in the generation process of the display pattern 4 in step 125, first, it is determined whether or not the combination of the upper consonant and the horizontal vowel in the given character code is the specific one that should be the pattern 4-2 described above. If it is not the specific one, it is displayed in one display section according to pattern 4-1 and if it is the specific one, it is displayed in one display section according to pattern 4-2. The manner in which the dot pattern of display pattern 4-2 is generated is shown in FIG.

The method of the generation processing of pattern 4 is used in the generation processing of patterns 6, 7, 8 and 9 described later.

The details of the algorithm for generating the display pattern 7 in step 126 are shown in FIG. FIG. 19 shows an example of the process of generating Hangul characters containing compound vowels according to this algorithm. Referring to these figures, the compound vowels are first decomposed into horizontal vowels and vertical vowels (step 131). As mentioned above, the dot pattern of compound vowels is not created in advance,
Instead, a combination table (see FIG. 14) of horizontal vowels and vertical vowels that form a compound vowel is stored in the ROM 32 or 42. With reference to this combination table, the horizontal vowels (VH ₁ or V
Find the chord of H ₂ ) and the chord of the vertical vowel (VV ₁ ). In the example of FIG. 19, the compound vowel of code $ 0F is specified, so this is the horizontal vowel of code $ 05 and the code $$.
It turns out that it can consist of 01 vertical vowels.

The Hangul characters of the display pattern 7 are displayed using the two display sections 35 of the display panel 34. Next, the dot pattern of the upper consonant CH ₁ designated by the consonant code and the horizontal vowel (VH ₁ or VH ₂ ) retrieved by the above processing are synthesized by the above-described method of creating the display pattern 4, and the first pattern is generated. It is displayed in the second display section (step 132). In the example of FIG. 19, the upper consonant of code $ 01 and the horizontal vowel of code $ 05 are combined. Then, the vertical vowels (VV
The dot pattern of ₁ ) is displayed in the second display section (step 133).

When it is determined in step 122 in FIG. 23 that the patch is present, the process proceeds to the process shown in FIG. Here again, the vowel code is first checked to determine whether it is a vertical vowel, a horizontal vowel, or a compound vowel (step 141).

In the case of a vertical vowel, the display pattern is 2 or 3 as can be seen from the classification table of FIG. Display pattern 2
Displays one Hangul character in two display sections, and the display pattern 3 is displayed using three display sections. Since it is preferable to display one Hangul character in as few display sections as possible, it is first checked whether pattern 2 can be displayed (step 142). In each of the display patterns 2 and 3, the side consonant designated by the consonant code is displayed in the first display section.
Therefore, whether or not the combination of vertical vowels (vowels VV _{2 with} a small number of vertical dots) and patchum CP ₁ that make up Hangul characters fit in one display area is the target of the check.

Referring to FIG. 13, the vertical vowel VV ₂ has 3 or 4 vertical dots, and the patchum CP ₁ has 3, 4 or 5 vertical dots.
Is. Therefore, combinations that can be displayed in one display section with 7 vertical dots are vertical vowel VV ₂ with 3 vertical dots and patchum CP ₁ with 3 vertical dots, VV ₂ with 3 vertical dots and CP with 4 vertical dots. ₁ and VV ₂ with 4 vertical dots and CP _{1 with} 3 vertical dots
Is. In these cases, the dot pattern of display pattern 2 is generated (step 145). In this process, the dot pattern of the vertical vowel VV ₂ specified by the vowel code and the dot pattern of the patchum CP ₁ specified by the patchum code are combined and displayed in the second display section.

In the case of combinations other than the above combinations, the display pattern 3 is generated (step 146). In this process, the second
The VV ₁ pattern with the largest number of vertical dots among the vertical vowel dot patterns specified by the vowel code is displayed in the 3rd display area, and the patch pattern CP ₁ dot pattern specified in the 3rd display area is displayed. To be done.

If the vowel type is determined to be a horizontal vowel, it is checked whether the Hangul characters can be represented by the display pattern 5 (step 143). Display pattern 5 is 1 combination of consonant, vowel and patchum.
It fits in the display area. If the combination of the display patterns 5 is possible, the designated Hangul characters are displayed in this pattern 5, and if not possible, the display pattern 6 is used. The display pattern 6 displays a combination of consonants and vowels in the first display section and a patchum in the second display section to express one Hangul character in the two display sections.

The display pattern 5 is the display patterns 5-1 and 5-2 as shown in FIG.
And 5-3. The display pattern 5-1 is a consonant dot pattern CH ₂ with ₂ vertical dots and ₂ vertical dots.
The vowel dot pattern VH ₃ and the patchum dot pattern CP ₁ having three vertical dots are vertically arranged. Display pattern 5-2 is CH ₁ with vertical bit number 3, VH ₄ with vertical dot number 2 and CP ₂ with vertical dot number 2, and pattern 5-3 is CH ₁ with vertical dot number 3 and vertical dot number 1 It is composed of VH ₃ and CP ₁ having three vertical dots. Since the higher the number of vertical dots in the uppermost consonant is, the higher the quality of Hangul characters can be expressed, the pattern 5-2 is preferentially adopted over the display pattern 5-1. FIG. 21 shows the consonants, vowels, and patch vowels constituting these display patterns 5-1 to 5-3.

Hangul characters specified by the code are pattern 5
In checking whether it can be expressed by any of -1 to 5-3, the vowel code is first checked.
Vowel chords with dot pattern VH ₄ ($ 05, $
If it is 06, $ 07, $ 08), there is a possibility that it can be expressed by display pattern 5-2. In this case, the consonant code then indicates a letter having an upper consonant dot pattern CH ₁ with 3 vertical dots (some CH ₁ have 4 vertical dots), and patch -Pattern 5-2 is selected on the condition that the code indicates a character having a dot pattern CP ₂ having two vertical dots. Although a vowel code has a dot pattern VH ₄ (this vowel code has a dot pattern VH ₃ ), if the above consonant and patchum conditions are not met, the next consonant is The code has a dot pattern CH ₂ with ₂ vertical dots (CH ₂ with ₂ vertical dots is included in CH ₁ with 3 vertical dots), and the patch code is a dot with 3 vertical dots.
It is determined that the display pattern 5-1 can be displayed on the condition that the pattern CP ₁ is included. The vowel chord is a dot
Even if it has the pattern VH ₄ , if the consonant chord or the patchum chord does not satisfy the conditions of the display pattern 5-1 or 5-2, it is judged that the display pattern 6 is used.

To check whether the remaining display pattern 5-3 can be expressed, the vowel code is a dot pattern with 1 vertical dot.
Check if it has VH ₃ (this is only vowel code $ 09), and if so, the consonant code is 3 vertical dots
The display pattern 5-3 is adopted on condition that the patch pattern has a dot pattern CH ₁ of ₁ and the patchum code has a dot pattern CP ₁ of 3 vertical dots. In other cases, the display pattern 6 is displayed.

If it is determined that the display pattern 5-1, 5-2 or 5-3 can be displayed, the dot pattern corresponding to that pattern is read from the ROM 32 or 42, and these are overlapped and designated as one display section. The displayed Hangul characters are displayed (step 147).

In other cases, the process proceeds to the process of generating the display pattern 6 (step 148). In the display processing of this display pattern 6, the dot pattern CH ₁ and VH ₁ or VH ₂ of the given consonant code and vowel code is displayed in the first display section 9 as the display pattern 4 shown in FIG. Display is performed according to the same method, and the display pattern CP ₁ specified by the patch code is displayed in the second display section.

When it is judged in the analysis of the vowel code in step 141 that there are multiple compound vowels, it is judged whether or not it can be expressed by the display pattern 8 (step 144). Display pattern 8
Represents one Hangul character in two display sections. If the display pattern 8 cannot be expressed, the display pattern 9 that expresses one Hangul character using three display sections is adopted.

The determination of whether expressed in display pattern 8, as in the case of the display processing of the display patterns 7, the horizontal vowels multi people if vowel using the table shown in FIG. 14 (VH ₁ or V
H ₂ ) and vertical vowels (VV ₁ or VV ₂ ). next,
Whether or not the decomposed vertical vowel and the given patchum can be expressed in one display section is determined using the same method as the above-described processing for determining whether or not the display pattern 2 can be expressed. If it can be displayed, the pattern 8 is adopted, and if it cannot be displayed, the pattern 9 is used.

If the display pattern 8 can be displayed, the dots used for the consonant code (CH ₁ ) and the above-described decomposed horizontal vowel code (VH ₁ or VH ₂ ) are _first determined by the method used in the display process of display pattern 4. The patterns are vertically superimposed and displayed in the first display section, and then the decomposed vertical vowels and the dot pattern of the designated patchum are displayed in the second display section (step 149). When the display pattern 9 is displayed, the same processing as the pattern 8 is used for the first display section and the same processing as the pattern 3 is used for the second and third display sections (step 150).

(4) Separate display control code and display processing Figure 26 shows a part of the character code data of the received display command and the display panel based on this character code data.
The contents displayed in 34 are shown. An alphanumeric character designated by an 8-bit alphanumeric code is always displayed in one display section 35. Since one display section 35 of the display panel 34 is called one digit, the corresponding 8 bits in the character code data will be called one digit. In FIG. 26, the display command is composed of 20 digits, and the display panel 34 is also provided with a 20-digit display section (20 display sections) 35.

FIG. 26 (1) shows a case where the character code data in the display command includes only an alphanumeric code. As described above, since one alphanumeric character indicated by the one-digit alphanumeric code is displayed in one display area, all the alphanumeric characters indicated by the 20-digit alphanumeric code include the display panel 34 including 20 display areas 35. Will be displayed exactly. The digit position of each character code in the display command matches the digit position on the display panel 34 where the character is displayed.

In Fig. 26 (2), the character code data in the display command consists only of Hangul character codes, and this Hangul character code can display one character in one display section (that is, Hangul characters in Fig. 10 pattern 4). Shows the case where is specified. The Hangul character code requires 16 bits or 2 digits. Since the Hangul characters represented by the 2-digit character code are displayed in the 1-digit display area 35, all the Hangul characters represented by the 20-digit character code data are displayed in the 10-digit display area and the 10-digit display area. There is an excess of compartments. The digit position of each character code in the display command does not match the digit position on the display panel 34 where the character is displayed.

In Fig. 26 (3), the character code data in the display command consists only of Hangul character codes, and this Hangul character code can display one character in two display areas (for example, Hangul characters in Fig. 10 pattern 1). Shows the case where is specified. Since the Hangul characters represented by the 2-digit character code are displayed in the 2-digit display area 35, all the Hangul characters represented by the 20-digit command data are displayed in the 20-digit display area. The digit position of each character code in the display command matches the digit position on the display panel 34 where the character is displayed.

In FIG. 26 (4), the character code data in the display command consists only of Hangul character codes, and this Hangul character code requires three display sections to display one character (for example, pattern 9 in FIG. 10). () Shows the case where the Hangul character is specified. Since the Hangul characters represented by the 2-digit character code are displayed in the 3-digit display area 35, all the Hangul characters represented by the 20-digit character code data cannot be displayed in the 20-digit display area. It protrudes from the display panel 34. The digit position of each character code in the display command does not match the digit position on the display panel 34 where the character is displayed.

Fig. 26 (5) shows an example in which the character code data of the display command contains alphanumeric code. Hangul character code that requires 2 display areas and Hangul character code that requires 3 display areas are mixed. Shows. In this case, too, some characters cannot be displayed. Further, the digit position of each character code in the display command does not match the digit position on the display panel 34 where the character is displayed.

Figure 26 (6) shows an example in which the alphanumeric code and the Hangul character code that can be displayed in one display area are mixed in the character code data of the display command, and all characters are displayed. Also, one or some display areas 35 are left over. The digit position of each character code in the display command does not match the digit position on the display panel 34 where the character is displayed.

FIG. 26 (7) shows an example in which the alphanumeric code and the Hangul character code that requires three display areas for display are mixed in the character code data of the display command. The result is the same as in the case of FIG.

 26 (8) and (9) will be described later.

To summarize the above, when displaying data including Hangul characters, all the characters given by the display command may not be displayed in the display panel 34.
Not only in the above case where the character code data of the display command and the number of digits in the display section 35 are the same 20, but the same is displayed even if the character code data of the display command is slightly less than the number of digits in the display section 35. There may be cases where it cannot be completed.

On the contrary, it is possible that the display area is left over even if all the characters given by the display command are displayed.

If all the characters in the display command cannot be displayed on the display panel, the following problems occur. The data to be displayed on the display unit 3 or 4 includes data that needs to be displayed absolutely. In this way, if the absolute data cannot be displayed, the existence of the indicators 3 and 4 is meaningless. For example, when displaying the product name and its price on the displays 3 and 4, even if some or all of the product name cannot be displayed, the price must be displayed absolutely for the correct operation of the ECR1. There must be.

In order to solve this problem, the control code for separate display, ie US
(Unit separator) code has been introduced. This control code US indicates that the character code after a certain digit of the US code should be displayed preferentially in a predetermined display section on the display panel 34.

FIG. 27A shows an example of the code data of the display command including the control code US. The US code is in the fifth digit. The 20th to 6th digits consist of Hangul characters (and alphanumeric) codes, and the 4th to 1st digits are Hangul characters and alphanumeric characters (in some cases, only alphanumeric characters, or Hangul characters). Character only) is composed of the code. Such character code data is displayed on the display 3 or 4 by the processing of the CPU 31 or 41 as follows.

Referring to FIG. 27 (B), first, character codes from the 20th digit to the 6th digit immediately before the US code are analyzed by the procedure described in "(3) Display processing general" above, The dot pattern representing the character designated by the character code of is developed and stored in the first buffer corresponding to each display section 35 (first step). The drawing corresponding to the first step in FIG. 27 (B) is the display section from the 20th digit to the 3rd digit due to the development of the above dot pattern.
It shows that 35 were occupied. Code SP is a space code and no characters are displayed here.

Next, the character codes from the 4th digit to the 1st digit after the US code are analyzed in the same way, and the dot pattern representing the character designated by these character codes is expanded,
Store in the second buffer (second step).

Then, in the second step, it is found that the characters after the US code require a display section for four digits. Therefore, the fourth digit to the first digit of the dot pattern expanded from these dot patterns in the first step. The first buffer is preferentially stored as the one to be displayed in the eye display section (third step). As a result, the dot patterns of the third digit and the fourth digit developed in the first step are erased.

Therefore, finally, the dot pattern developed in the first step is displayed from the 20th digit display section to the 5th digit display section, and from the 4th digit display section to the 1st digit display section. The dot patterns developed in the second step are displayed. That is, the character represented by the character code after the US code is displayed in priority to the other characters in the display section of the first digit to the fourth digit.

In order to distinguish this preferentially displayed character from other displayed characters, there is a space in the position of the US code, that is, in the fifth digit.
It is recommended that you enter the code SP so that no characters are displayed in the 5th digit display area.

In the above explanation, two buffers for dot pattern expansion are used to make it easier to understand, but the number of display sections necessary for displaying the dot pattern by the character code after the US code is known in advance. U (for example, if the fourth digit to the first digit are alphanumeric), U
The dot pattern of characters after the S code may be expanded from the fourth digit of the first buffer. Then, the second buffer becomes unnecessary.

Even if the number of display sections required for displaying dot patterns with character codes after the US code is not known in advance, if the necessary number of display sections is derived from that character code, these will be directly input to the first buffer. It is possible to develop a dot pattern.

Before expanding all the character codes to dot patterns, calculate the number of display partitions required to display the characters of these character codes, and use the calculated value to determine the partition position where each character should be displayed. Determine, then expand the dot pattern (ie ROM3 as a character generator)
Dot pattern reading from 2,42) can also be performed.

In the character code data of FIG. 27 (A), when the characters indicated by the character codes from the 20th digit to the 6th digit are displayed, the display area occupied by the characters is less than 15 digits (see FIG. 27 ( In the first step of B), the number is 18 digits and exceeds 15 digits). Also, the characters represented by the character codes from the 4th digit to the 1st digit after the US code are displayed in a predetermined digit display section (for example, the 1st digit). If you display it after the 4th digit), the display position of the character that should be prioritized is constant, so it will be very easy to see when the character that should be prioritized has a specific meaning (for example, price). .

According to the process shown in FIG. 27 (B), the first step is the third step.
The characters expanded as displayed in the display sections of the first digit and the fourth digit are erased for the priority character display after the US code. For example, if the erased characters in the 3rd and 4th digits form part of the Hangul characters displayed in the 3 display areas, the other part remains in the 5th digit. The character in the digit becomes halfway.

The 26th is an example of such a halfway character left.
This is shown in Figure (8). In this example, the US code is in the 16th digit of the character code data. The Hangul characters specified by the character code $ 9216 in the 18th and 17th digits and the character code $ 85F5 in the 20th and 19th digits are both 3 for display.
You are requesting a display pane. Therefore, when the priority characters after the US code are displayed in the display area after the 15th digit,
The Hangul characters specified by the character code $ 9216 remain in half-finished form in the display section of the 17th and 18th digits.

Such half-finished Hangul characters can be unclear, so it is easier to see them. FIG. 26 (9) shows a display example in which the halfway display in the 16th and 17th digits is cleared. The display command is the same as that of FIG. 26 (8).

For the process of erasing such half-finished characters,
The digit position of the display code in the display command and the display panel that is used exclusively when displaying it, as shown in Fig. 28.
It is advisable to create a table showing the relationship with the digit positions of the 34 display sections 35. If we know that the priority characters after the US code will be displayed from the 15th digit, the 15th digit will be
Since it is included in the ~ 15 digit position, it can be determined that the character code of the 17th and 18th digits is not displayed.

[Brief description of drawings]

Fig. 1 is a perspective view showing the appearance of the ECR, Fig. 2 is a block diagram showing the electrical structure of the ECR, Fig. 3 is a front view showing the structure of the display panel of the display in the ECR, and Fig. 4 is the above display. It is a figure which shows the dot segment of the display area of a panel. FIG. 5 (A) is a diagram showing the format of the Hangul character designation code, FIG. 5 (B) is a diagram showing the range of the same designation code, and FIG. 6 (A) is the format of the code designating alphanumeric characters. And FIG. 6 (B) are diagrams showing the range of the designated code. Figure 7 shows the correspondence between consonant chords and consonant kanji,
FIG. 8 is a diagram showing a correspondence relationship between vowel chords and vowel letters.
FIG. 9 is a diagram showing a correspondence relationship between a patchum code and a patchum character. FIG. 10 is a diagram showing types of display patterns, and FIG. 11 is a diagram showing classification of these display patterns based on vowels. FIGS. 12 (A) to 12 (F) are dot characters for character display stored in the ROM as a character generator.
It is a figure which shows the example of a pattern. Figure 13 shows the dots that have been created and stored.
FIG. 14 is a diagram showing patterns arranged for each character and its designated chord, and FIG. 14 is a table showing combinations of horizontal vowels and vertical vowels constituting a compound vowel. FIG. 15 is a diagram showing the format of a display command and how characters designated by this command are displayed. FIG. 16 is a diagram showing how the Hangul characters of display pattern 1 are displayed by decomposing the designated code. FIG. 17 shows how the display pattern 4 can be classified into two types, and FIG. 18 shows the generation of Hangul characters of the display pattern 4,
It is a figure which shows a display process. FIG. 19 is a diagram showing a process of generating and displaying Hangul characters of the display pattern 7 including compound vowels. FIG. 20 is a diagram showing that the display pattern 5 can be classified into three types, and FIG. 21 is a diagram showing the specific characters formed in the display pattern 5 divided into three types. FIG. 22 is a flow chart showing a processing procedure for distinguishing Hangul characters from alphanumeric characters performed by the sub CPU when receiving a display command. 23 to 25 are flow charts showing Hangul character creation and display processing procedures of various display patterns executed by the sub CPU. Figure 26 (1) to (9) shows the character code in the display command.
It is a figure which shows data and its display example. Figure 27 (A) shows the character code including the display separation control code.
The data is shown in FIG. 27 (B).
It shows a procedure of data display processing. FIG. 28 is a diagram showing a table relating the digit positions of the display code / data and the digit positions on the display section. 1 ... ECR, 3,4 ... Display, 5 ... Printer, 11 ... Main CPU, 12 ...
Main CPU ROM, 13… Main CPU RAM, 31, 41… Display processing sub CPU, 32, 42… Sub CPU character generator ROM, 33, 43… Sub CPU RAM, 34… Display panel, 35
… Display area, 36… Dot segment.

Claims (1)

[Claims] Claim: What is claimed is: 1. An output device in which a range representing a character is predetermined, and a series of character code data representing a character to be output,
An output command including priority information indicating that a specific character should be output in preference to another character, and is included in the output command when the character represented by the series of character code data is output. When all of the characters represented by the series of character code data that can be output cannot be output within the above range, the characters specified by the above priority information are deleted, and some of the other characters are deleted, and the above range is given priority. A character output device provided with an output control means for controlling the output within.