A department head stroke input method suitable for a small keyboard

Abstract

The application discloses a department head stroke input method suitable for a small keyboard and belongs to the technical field of Chinese character coding input. In view of the problems of many roots, difficult memory and incapability of efficiently adapting to a digital small keyboard of an existing five-stroke input method, the application divides roots into three levels of strokes, department strokes and department heads, constructs a 10*10 root matrix, and codes each root with the area position column number of two numbers in 0-9; splits Chinese characters according to rules such as maximum matching and writing sequence, sequentially extracts the line number of the root to form an original code, and generates an input code with the longest four bits according to the length of the original code by adopting rules such as complement, full taking or taking the first and last two bits. The application fully utilizes the ten digital keys of 0-9, has low code rate, few roots and low learning cost, and is suitable for fast Chinese character input of small keyboard devices such as smart phones, tablet computers and industrial handheld terminals.

Description

Technical Field

[0001] This invention belongs to the field of Chinese character encoding input technology, and relates to a radical stroke input method suitable for the numeric keypad. By re-encoding and combining radical strokes, it can be adapted to the numeric keypad, with a low homonym rate and easy memorization. Background Technology

[0002] Since the introduction of electronic computers to China, how to efficiently and accurately input tens of thousands of Chinese characters into digital devices has always been an important issue in the field of information technology. After decades of development, Chinese character input methods have formed two major technical routes, mainly based on character shape encoding and character sound encoding. Among them, character shape encoding, due to its advantages such as low homonym rate, blind typing capability, and fast input speed, occupies a dominant position in professional text input, typesetting, publishing and other fields.

[0003] However, most character-based input methods are designed based on standard keyboards (usually 101 or 104 keys), especially the Wubi input method, which has over 180 radicals distributed across the 26 English letter keys and some symbol keys on a full-size keyboard. This design was a huge success in the era of full-size keyboards, allowing users to achieve input speeds of hundreds of characters per minute through coordinated ten-finger operation. But the inherent flaws of this scheme are also obvious: a large number of radicals, a heavy memory burden, and a steep learning curve, often requiring weeks or even months of dedicated training for ordinary users to become proficient.

[0004] With the widespread adoption of mobile computing devices and portable electronic products, such as smartphones, tablets, and industrial handheld terminals, their input interfaces are mostly compact 9- or 10-key numeric keypads. The traditional Wubi input method, primarily designed for standard 26-key keyboards, faces significant challenges when migrating to these keypads.

[0005] Currently, the most widely used Wubi input method (such as Wangma Wubi) has become the preferred choice for professional input due to its low homonym rate and fast input speed. However, this type of input method requires memorizing more than 180 radicals and their complex distribution on the 26 letter keys, resulting in a high learning cost. In addition, the large number of radicals cannot be directly and efficiently mapped to the small keyboard with only 10 numeric keys.

[0006] Another publicly available seven-key, five-code Chinese character encoding input method attempts to utilize six strokes and one structural key for encoding. However, it only uses seven number keys, failing to fully utilize the ten digits (0-9) on the numeric keypad. This results in a theoretically high homophone rate and limited practical input efficiency. While Pinyin-based input methods are easy to learn, the large number of homophones on the numeric keypad leads to an extremely high homophone rate, requiring frequent page flipping for word selection and hindering fast, touch-based text input.

[0007] In the prior art, Chinese Patent CN1332401A discloses a four-stroke number word non-repeating input method and its keyboard. This input method generalizes Chinese character stroke forms into 5 types of single strokes and 5 types of compound strokes, using 1, 2, 3, 4, 5 and 6, 7, 8, 9, 0 as codes respectively. Different coding rules are adopted for single characters and compound characters. Special input keys are set for "single characters", "two-word phrases", "three-word phrases", and "multi-word phrases" respectively, achieving non-repeating coding for inputting characters and words using a numeric keypad. Although it uses all ten numeric keys from 0 to 9, its coding basis is single strokes and compound strokes, belonging to a stroke-based coding system, and has not formed a well-defined root character system, making it difficult to learn and remember.

[0008] Chinese Patent CN1264859A discloses a five-stroke digital keyboard Chinese character computer input method and its keyboard. The said keyboard is a digital keyboard, with at least five single Chinese character strokes marked on the numeric keys 1, 2, 3, 4, 5 of the keyboard, and key elements such as "king", "earth", "heart", "mouth", "ten", "person", "sun" are added to some or all of the numeric keys. Its characteristics are that two types of digital keyboards with fewer duplicate codes and higher efficiency, namely 6-key 6-code and 9-key 6-code, and a coding system for the first part and the remaining part are formed thereby. However, its root character layout and coding rules follow the complex structure of五笔字型, with a large number of root characters, and mainly use the five numeric keys 1 - 5 to mark single strokes, resulting in insufficient utilization of key positions, and the maximum code length is 6 codes.

[0009] Chinese Patent CN1265482A discloses a digital unified code Chinese character input method and its keyboard. Its characteristics are that it deeply analyzes the relationship between Chinese characters, components, and strokes, and assigns sequential values and positional relationship values to the basic strokes of Chinese characters. The sum of the sequential value and the relationship value of the strokes, from "1" to "9", is used as the code element for the keyboard mapping of Chinese character coding. The pen form information of the strokes and the positional information of the strokes in the Chinese character are each represented by one digit. The pen form information of the five basic strokes is assigned pen form sequential values from "1" to "5"; the positional relationship between strokes is classified into two categories: independent and intersecting, and the positional relationship offset values "0" and "5" are assigned. However, its coding basis is the positional relationship value of the strokes, and it is necessary to calculate the sum of the sequential value and the offset value of the strokes. The coding rules are relatively abstract and complex, and the learning cost for users is relatively high.

[0010] After the inventor's retrieval and analysis, there has not been a five-stroke input method in the prior art that is applicable to a numeric keypad and兼顾 low duplicate code rate, low learning cost, and high input efficiency. Therefore, inventing a radical-stroke input method applicable to a numeric keypad can improve the deficiencies of the prior art to solve the problems of low input efficiency and high duplicate code rate of the five-stroke input method involved in the prior art on the numeric keypad of mobile devices. Summary of the Invention

[0011] The purpose of this invention is to overcome the shortcomings of the prior art. Based on the improvement of the existing Wubi input method, it designs and provides a Wubi input method that is suitable for the numeric keypad and takes into account low homonym rate, low learning cost and high input efficiency. It solves the technical problems of high homonym rate, large amount of character root memory and low input efficiency in the existing technology in the numeric keypad environment.

[0012] To achieve the above objectives, the present invention relates to a radical stroke input method suitable for a numeric keypad, comprising the following steps:

[0013] S1: Encoding table construction: Based on the encoding rules, construct a character root encoding table based on 10 numeric keys from 0 to 9;

[0014] S2: Chinese character decomposition: The target Chinese character is decomposed according to the decomposition rules, and its constituent radicals are extracted in sequence. The radicals include strokes, components, and components. Components refer to Chinese character structural combinations that are between basic strokes and complex components, which are frequently occurring and usually do not exceed three strokes. Components, basic strokes, and traditional components together constitute the radical system. The basic strokes are horizontal, vertical, left-falling, right-falling, and turning strokes.

[0015] S3: Numerical encoding conversion: Convert the radicals extracted in step S2 into their corresponding numerical codes according to the preset radical encoding table;

[0016] S4: Input code generation: Combine the codes according to the code extraction rules to form a complete input code, which has a maximum length of four digits.

[0017] The radical encoding table mentioned in step S1 of this invention arranges radicals in a virtual matrix of 10 rows × 10 columns. The row number and column number correspond to the 0-9 keys on the numeric keypad. The encoding rule is that the unique code of each radical is composed of its row number (zone number) and column number (position number), forming a two-digit zone and column number encoding.

[0018] The splitting rule described in step S2 of this invention is specifically as follows:

[0019] S21: Maximum matching principle: Prioritize splitting into the largest possible radicals, that is, find the largest matching radical from the radical encoding table;

[0020] S22: Intuitive Sequence Principle: Strictly follow the stroke order of Chinese characters, extracting the radicals sequentially from left to right, from top to bottom, and from outside to inside;

[0021] S23: Non-overlapping principle: The split radicals should not share strokes, and each stroke belongs to only one radical;

[0022] S24: The principle of exhausting character roots: The entire Chinese character is completely broken down into the character roots in the character root encoding table until no more known character roots can be extracted. The remaining strokes are also considered as character roots.

[0023] The present invention relates to step S3, which specifically includes: for the sequentially arranged character root sequence obtained in step S2, extracting the first digit of each character root in its zone and column number encoding, i.e., the row number, to form the original code.

[0024] The code extraction rule mentioned in step S4 of this invention is specifically as follows:

[0025] S41: When the length of the original code obtained in step 3 is 1, take all two digits of the zone and column number code of the radical, then take the difference code of the second stroke of the radical as the third digit, and finally take the difference code of the last stroke of the radical as the fourth digit; if it is still less than four digits, repeat taking the difference code of the second stroke of the radical to make up the difference.

[0026] S42: When the length of the original code obtained in step 3 is 2, the stroke difference code of the last stroke of the target Chinese character is added after the original code as the third position, and the stroke difference code of the second stroke of the target Chinese character is added as the fourth position.

[0027] S43: When the length of the original code obtained in step 3 is 3, the stroke difference code of the last stroke of the target Chinese character is added after the original code as the fourth bit.

[0028] S44: When the length of the original code obtained in step 3 is 4, directly take all 4 digits of the original code as the input code of the Chinese character.

[0029] S45: When the length of the original code obtained in step 3 is not less than 5, take the first two digits and the last two digits of the original code and combine them in order to form a 4-digit number, which is used as the input code of the Chinese character.

[0030] S46: When the target Chinese character to be input is a radical, take the two-digit code of the radical's zone and column number, and then take the first digit of the zone and column number code of the largest substructure that can be split into the radical according to the splitting rules in the second step. If there is no splitting substructure, take the distinguishing code of the second stroke of the radical. Repeat the previous step until four digits are obtained. If there are still less than four digits, take the distinguishing code of the last stroke of the radical to make up the difference.

[0031] The discrimination code described in step S41 of the present invention is used to distinguish two or more Chinese characters that obtain the same 4-bit input code after the fourth step, that is, to distinguish homophonic characters. Calculate the discrimination code for the second stroke and the last stroke of each homophonic Chinese character, and append it to the original 4-bit code in sequence to form a 5-bit or 6-bit full code. In actual input, commonly used characters are preferentially displayed. The user can select the homophonic characters through the numeric keys or directly input the discrimination code for precise positioning. Since the input method involved in this embodiment mostly adopts word input and simple code design, the above discrimination code is only used in the extreme case of single character input and homophonic characters, without affecting the efficiency of conventional input.

[0032] Except for the radicals, the general principle for Chinese character coding is as follows: for a two-digit code, the discrimination code consists of two digits, which are the discrimination codes for the second stroke and the last stroke respectively; for a three-digit code, the discrimination code is the discrimination code for the last stroke.

[0033] Each basic stroke corresponds to different numeric codes according to its morphological length or complexity: for horizontal strokes, the short horizontal stroke (-) has a code of 1, and the long horizontal stroke (—) has a code of 6; for vertical strokes, the short vertical stroke (|) has a code of 2, and the long vertical stroke (丨) has a code of 7; for left-falling strokes, the short left-falling stroke (丿) has a code of 3, and the long left-falling stroke (the extended form of 丿) has a code of 8; for right-falling or dot strokes, the short dot (丶) has a code of 4, and the long right-falling stroke (乀) has a code of 9; for turning strokes, the short turning stroke (𠃌) has a code of 5, and the multi-turning or long turning stroke (𠃊) has a code of 0.

[0034] Compared with the prior art, the present invention has the following advantages: (1) For the existing five-stroke input method to adapt to the large keyboard design, the number of root characters exceeds 180, and the distribution is complex; or only seven digital keys from 1 to 7 are used, and all ten digital keys from 0 to 9 are not fully utilized. The present invention introduces the concept of "partial strokes", divides the root characters into three levels: strokes, partial strokes, and radicals. The total number of root characters is less than half of the traditional five-stroke method, with a clear structure, facilitating users' understanding and memory. A root character matrix of 10 rows × 10 columns is adopted, where the row number and column number both correspond to the ten digital keys from 0 to 9, and the coding space reaches 100 two-digit combinations, more than doubling that of the seven-key scheme's 49 combinations, providing a basis for reducing the rate of homophonic characters. Using the ten digits from 0 to 9 as coding, taking the four-key example, the coding digits are 10*10*10*10 equal to 10,000, while for the seven-digit coding, taking the four-key example, 7*7*7*7 equals 2,401, less than one-fourth of the ten-key code. (2) The present invention mainly uses the row number of the root character as the coding method, and adopts rules such as padding, full selection, taking the first and last two digits, etc. according to the number of root characters split out, with unified logic and simple operation, and there are also clear rules for the coding of the root characters themselves. (3) Due to the expanded coding space and reasonable division of root characters, the rate of homophonic characters in the actual use of the present invention is lower than that of the existing nine-grid pinyin input method and the seven-key five-code scheme of the numeric keypad. For homophonic characters, the present invention also provides a discrimination code based on the length and shape of the strokes as an auxiliary discrimination means. (4) The present invention is specially designed for the numeric keypad, without the need to modify the existing hardware, and directly adapts to the input interface of the current mainstream mobile devices, solving the problem that the traditional large keyboard input method cannot be adapted on the mobile side. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is the root character coding diagram of the radical-stroke input method applicable to the numeric keypad related to the present invention.

[0036] Figure 2 It is the step flow schematic diagram of the radical-stroke input method applicable to the numeric keypad related to the present invention.

[0037] ATTACHMENT NOTES:

[0038] In Figure 1 below, ab in the following text represents the a-th row and the b-th column, and the root character coding annotations for each row are as follows:

[0039] 1. One represents a horizontal stroke, two represents two horizontal strokes, 13 represents the first two strokes of the character "qu", pronounced as "qu" or "ou"; 16 represents the first two strokes of the character "shi", 18 represents the first two strokes at the beginning of the character "zuo", 19 represents the first three strokes at the beginning of the character "qi", and the rest are common radicals.

[0040] 2. 21 represents a vertical stroke, 23 represents two vertical strokes, 26 represents the first two strokes of the character "shuai", 27 represents the first two strokes of the character "hu", called "humaos", and the rest are common radicals.

[0041] 3. 31 represents the first two strokes of the character "氏", 33 represents the first two strokes of the character "包", 35 represents the character "义" without the dot, 37 represents the first two strokes of the character "鱼", 39 represents the deformed character "爪", and the rest are common radicals.

[0042] 4. 44 represents the first two strokes of the character "文", 41, 42, 43, and 45 represent one to four dots of water, and the rest are common radicals.

[0043] 5. 54 represents the last two strokes of the character "凶", that is, the outer part, 56 is composed of the second, third, and fourth strokes in the center of the character "互", and the rest are common radicals.

[0044] 6. 64 represents the deformed character of the radical "扌", with the strokes being two horizontal lines and one vertical line, 67 represents the first two strokes of the character "下", and the rest are common radicals.

[0045] 7. 74 represents the first three strokes of the character "当", 77 represents the remaining part of the character "上" after removing the short horizontal line, and the rest are common radicals.

[0046] 8. 82 represents the first two strokes of the character "矢", 89 represents the deformed character of the radical "厂" and the first two strokes of the character "爪", 80 represents the character "夕" without the middle dot, and the rest are common radicals.

[0047] 9. 97 represents the last three strokes of the character "豆", and the rest are common radicals.

[0048] 10. 05 represents the radical "彐" without the second horizontal stroke, and the rest are common radicals. Detailed implementation mode

[0049] Next, in combination with the attached drawings and specific embodiments, the technical solution of the present invention will be further described.

[0050] Embodiment 1:

[0051] A radical stroke input method applicable to a numeric keypad involved in this embodiment includes the following steps:

[0052] S1: According to the coding rules, construct a root code table based on a total of 10 numeric keys from 0 to 9;

[0053] S2: Split the target Chinese character according to the splitting rules, and sequentially extract its constituent root characters. The root characters include strokes, partial strokes, and radicals. The partial strokes refer to the frequently occurring, usually no more than three-stroke Chinese character structure combinations between basic strokes and complex radicals. The partial strokes, basic strokes, and traditional radicals together constitute the root character system. The basic strokes are horizontal, vertical, left-falling, right-falling, and turning;

[0054] S3: Convert the root characters extracted in step S2 into corresponding numeric codes according to the preset root code table;

[0055] S4: Combine them into a complete input code according to the code-taking rules. The input code is at most four digits long.

[0056] In step S1 of this embodiment, the root character encoding table arranges root characters in a virtual matrix of 10 rows × 10 columns. The row numbers and column numbers both correspond to the 0-9 keys on the numeric keypad. The encoding rule is that the unique encoding of each root character consists of its row number (area number) and column number (position number), forming a two-digit area-column position number encoding;

[0057] The root character encoding table is specifically as shown in the appendix Figure 1 as follows.

[0058] The splitting rule described in step S2 of this embodiment is specifically as follows:

[0059] S21: Maximum matching principle: Preferentially split into the largest possible root characters, that is, search for the largest matching root characters in the root character encoding table;

[0060] S22: Intuitive order principle: Strictly follow the writing stroke order of Chinese characters, and extract root characters in sequence from left to right, from top to bottom, and from outside to inside;

[0061] S23: Non-overlapping principle: The root characters split out should not share strokes, and each stroke belongs to only one root character;

[0062] S24: Root character exhaustion principle: Completely split the entire Chinese character into root characters in the root character encoding table until no known root characters can be split out anymore. The remaining strokes at the end are also regarded as root characters.

[0063] For example: For the Chinese character "青", according to the stroke order, it is split into "扌 (variant of the radical)", "一 (stroke)", "月 (radical)", obtaining three root characters.

[0064] Step S3 of this embodiment specifically includes: For the sequence of root characters arranged in order obtained in step S2, sequentially take the first digit, i.e., the row number, in the area-column position number encoding of each root character to form the original code.

[0065] For example: For the sequence of root characters "扌 (64), 一 (11), 月 (79)" obtained by splitting the character "青", take the row numbers to obtain the sequence [6, 1, 7].

[0066] The code-taking rule described in step S4 of this embodiment is specifically as follows:

[0067] S41: When the length of the original code obtained in step 3 is 1, take the entire two-digit area-column position number encoding of this root character, then take the discrimination code of the second stroke of this root character as the third digit, and finally take the discrimination code of the last stroke of this root character as the fourth digit; if it is still less than four digits, repeat taking the discrimination code of the second stroke of this root character to complete it;

[0068] S42: When the length of the original code obtained in step 3 is 2, append the stroke discriminant code of the last stroke of the target Chinese character as the third digit after the original code, and then append the stroke discriminant code of the second stroke of the target Chinese character as the fourth digit;

[0069] S43: When the length of the original code obtained in step 3 is 3, append the stroke discriminant code of the last stroke of the target Chinese character as the fourth digit after the original code;

[0070] S44: When the length of the original code obtained in step 3 is 4, directly take all 4 digits of the original code as the input code of this Chinese character;

[0071] S45: When the length of the original code obtained in step 3 is not less than 5, take the first two digits and the last two digits of the original code, and combine them in order to form a 4-digit number as the input code of this Chinese character;

[0072] S46: When the target Chinese character to be input is itself a root character, take the two digits of the area and column number coding of this root character, and then take the first digit of the area and column number coding of the largest sub-structure that can be split from this root character according to the splitting rule in the second step. If there is no split sub-structure, take the stroke discriminant code of the second stroke of this root character; repeat the above step until four digits are凑足 (completed), if it is still less than four digits, take the stroke discriminant code of the last stroke of this root character to complete.

[0073] The discriminant code described in step S41 involved in this embodiment is used to distinguish two or more Chinese characters that obtain the same 4-digit input code after the fourth step, that is, to distinguish homophonic characters. Calculate the discriminant codes of the second and last strokes for each homophonic Chinese character, and append them in order after the original 4-digit code to form a 5-digit or 6-digit full code. In actual input, commonly used characters are preferentially displayed. Users can select homophonic characters through the numeric keys, or directly input the discriminant code for precise positioning. Since the input method involved in this embodiment largely adopts word input and simple code design, the above discriminant code is only used in the extreme case of single character input and generating homophonic characters, without affecting the efficiency of conventional input.

[0074] Except for root characters, the Chinese character coding follows the general principle. For those composed of two-digit codes, take two discriminant codes, respectively taking the discriminant codes of the second and last strokes. The discriminant code table is as follows. For those composed of three-digit codes, take the discriminant code of the last stroke.

[0075] Li is composed of mu and zi, and their respective codes are 60. For the insufficient discriminant code, take the second stroke, which is a short vertical stroke, take 2, and the last stroke is a long horizontal stroke, take 6. Therefore, the full code of Li is 6026

[0076] The specific comparison of discriminant codes is as follows:

[0077]

[0078] In this embodiment, regarding the part involving supplementary distinguishing codes, when the radical has only one stroke, the second stroke does not exist, and the second stroke can be replaced with the unique stroke.

Claims

1. A radical stroke input method suitable for a numeric keypad, characterized in that, Includes the following steps: S1: Encoding table construction: Based on the encoding rules, construct a character root encoding table based on 10 numeric keys from 0 to 9; S2: Chinese character decomposition: The target Chinese character is decomposed according to the decomposition rules, and its constituent radicals are extracted in sequence. The radicals include strokes, components, and components. Components refer to Chinese character structural combinations that are between basic strokes and complex components, which are frequently occurring and usually do not exceed three strokes. Components, basic strokes, and traditional components together constitute the radical system. The basic strokes are horizontal, vertical, left-falling, right-falling, and turning strokes. S3: Numerical encoding conversion: Convert the radicals extracted in step S2 into their corresponding numerical codes according to the preset radical encoding table; S4: Input code generation: Combine the codes according to the code extraction rules to form a complete input code, which has a maximum length of four digits.

2. The radical stroke input method applicable to the numeric keypad according to claim 1, characterized in that: The character root encoding table in step S1 is a virtual matrix in which character roots are arranged in 10 rows × 10 columns. The row and column numbers correspond to the 0-9 keys on the numeric keypad. The encoding rule is that the unique code of each character root is composed of its row number and column number, forming a two-digit zone and column number code.

3. The radical stroke input method applicable to the numeric keypad according to claim 1, characterized in that: The splitting rules mentioned in step S2 are as follows: S21: Maximum matching principle: Prioritize splitting into the largest possible radicals, that is, find the largest matching radical from the radical encoding table; S22: Intuitive Sequence Principle: Strictly follow the stroke order of Chinese characters, extracting the radicals sequentially from left to right, from top to bottom, and from outside to inside; S23: Non-overlapping principle: The split radicals should not share strokes, and each stroke belongs to only one radical; S24: The principle of exhausting character roots: The entire Chinese character is completely broken down into the character roots in the character root encoding table until no more known character roots can be extracted. The remaining strokes are also considered as character roots.

4. The radical stroke input method applicable to the numeric keypad according to claim 1, characterized in that: Step S3 specifically includes: for the sequentially arranged character root sequence obtained in step S2, extracting the first digit of each character root in its zone and column number encoding, i.e., the row number, to form the original code.

5. The radical stroke input method applicable to the numeric keypad according to claim 1, characterized in that: The code extraction rule mentioned in step S4 is as follows: S41: When the length of the original code obtained in step 3 is 1, take all two digits of the zone and column number code of the radical, then take the difference code of the second stroke of the radical as the third digit, and finally take the difference code of the last stroke of the radical as the fourth digit; if it is still less than four digits, repeat taking the difference code of the second stroke of the radical to make up the difference. S42: When the length of the original code obtained in step 3 is 2, the stroke difference code of the last stroke of the target Chinese character is added after the original code as the third position, and the stroke difference code of the second stroke of the target Chinese character is added as the fourth position. S43: When the length of the original code obtained in step 3 is 3, the stroke difference code of the last stroke of the target Chinese character is added after the original code as the fourth bit. S44: When the length of the original code obtained in step 3 is 4, directly take all 4 digits of the original code as the input code of the Chinese character. S45: When the length of the original code obtained in step 3 is not less than 5, take the first two digits and the last two digits of the original code and combine them in order to form a 4-digit number, which is used as the input code of the Chinese character. S46: When the target Chinese character to be input is itself a root, take the two-digit number of the area and column number code of this root, and then take the first digit of the area and column number code of the largest sub-structure that can be split from this root according to the splitting rule in the second step. If there is no sub-structure that can be split, take the discrimination code of the second stroke of this root; repeat the above steps until four digits are凑足 (completed). If it is still less than four digits, take the discrimination code of the last stroke of this root to补齐 (complete).

6. The radical stroke input method for a numeric keypad according to claim 5, characterized in that: The discrimination code described in step S41 is used to distinguish two or more Chinese characters that obtain the same 4-digit input code after the fourth step, that is, to distinguish homophonic characters. Calculate the discrimination code of the second stroke and the last stroke for each homophonic Chinese character, and append it to the original 4-digit code in order to form a 5-digit or 6-digit full code; except for roots, the Chinese character coding adopts the general principle. For those composed of two-digit codes, take the discrimination codes of the second stroke and the last stroke respectively. For those composed of three-digit codes, take the discrimination code of the last stroke; Each basic stroke corresponds to different digital codes according to its morphological length or complexity: Among the horizontal strokes, the short horizontal (-) code is 1, and the long horizontal (—) code is 6; among the vertical strokes, the short vertical (|) code is 2, and the long vertical (丨) code is 7; among the left-falling strokes, the short left-falling stroke (丿) code is 3, and the long left-falling stroke (the extended form of丿) code is 8; among the right-falling or dot strokes, the short dot (丶) code is 4, and the long right-falling stroke (乀) code is 9; among the folding strokes, the short folding stroke (𠃌) code is 5, and the multi-fold or long folding stroke (𠃊) code is 0.

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