CN104503599A - 36 key-based tibetan language keyboard layout and input system - Google Patents

Abstract

The invention relates to tibetan language information processing technologies, in particular to keyboard encoding input of tibetan language on mobile information processing devices such as mobile phones and tablet computers. By means of technologies such as allocating only one key position for each consonant, arranging each pair of similar letters at same positions of different keyboards, eliminating repeated codes by the letters (img file='DSA0000112980160000011.TIF' wi='51' he='70'/) and decomposing character forms, 36 key-based tibetan language keyboard layout and an input system are designed, and efficient and accurate input of tibetan language syllables, sanskrit tibetan letters, tibetan figures, punctuation marks and common graphic symbols on the mobile information processing devices such as the mobile phones and the tablet computers can be achieved.

Description

A Tibetan keyboard layout and input system based on 36 keys

technical field

The invention relates to Tibetan information processing technology, in particular to keyboard code input of Tibetan on mobile information processing devices such as mobile phones and tablet computers.

Background technique

With the continuous improvement of information processing capabilities, mobile phones have gradually expanded from the original basic functions such as calling and sending text messages to various additional functions such as surfing the Internet, sending WeChat, playing games, taking pictures, and watching videos. With continuous enhancement and new functions, the number of mobile phone users is also growing. In many areas, the number of mobile phone users is approaching or has exceeded the total population of the area. Due to the ease of portability and strong processing power, the growth rate of tablet PC users is also very obvious. With the continuous popularization of mobile phones and tablet computers, the number of Tibetan users using these mobile information processing devices is also increasing, but currently there is a lack of a keyboard layout and Enter the system.

There are some defects in the existing Tibetan keyboard layout. The main reasons are as follows: first, the number of Tibetan letters is relatively large, and there are 41 consonants and 15 vowels in local Tibetan and Sanskrit Tibetan; second, there are some consonants Deformed forms, e.g. letters When used as a subconsonant, it is transformed into letter When used as an added consonant, it is transformed into And when it is added as a consonant, it is transformed into The third is that Tibetan letters can be combined not only left and right but also up and down. When combining up and down, except for the first level of consonants, the rest of the letters do not occupy space. Therefore, for a consonant letter, it is not only necessary to distinguish whether it occupies a place but also whether it is deformed. That is to say, a Tibetan consonant letter may have up to four appearance forms, namely, occupying a place without deformation, occupying a place with deformation, and not occupying a place. No bit deformation and no bit deformation. Factors such as the large number of letters, the deformation of some letters, and the combination of letters between letters make Tibetan keyboard input require a large number of keys, but the total number of keys in a keyboard layout is limited, which makes the Tibetan keyboard The input is complicated and causes some defects of the existing Tibetan keyboard layout.

The following takes the Tibetan keyboard layout Tibet (PRC) as an example to briefly introduce the existing Tibetan keyboard layout. Tibetan (PRC) assigns a key position for each appearance form of each consonant letter, so that each consonant letter requires at least two key positions, representing two forms of spacing and nonspacing respectively ;Individual consonant letters even require four keys, e.g. letters Four keys are required, which respectively represent the four forms of occupying no deformation, occupying deformation, not occupying no deformation, and not occupying deformation. Therefore, using Tibetan (PRC) to input all the Tibetan characters and symbols listed in the three Tibetan character set national standards such as the basic set, the extended set A, and the extended set B requires 192 key positions. In order to obtain so many key positions, Tibet (PRC) has five levels of keyboards: main keyboard (Regular Keyboard), m keyboard, M keyboard, shift keyboard and CtrlAltShift keyboard.

There are some obvious defects in the Tibetan keyboard layout Tibetan (PRC): First, the keyboard switches frequently, and about 75% of the Tibetan syllables have at least one non-occupied consonant, and the input of the non-occupied consonant needs to be switched to the m keyboard. Complete, too frequent switching between the main keyboard and the m keyboard restricts the further improvement of the input speed; second, it is difficult to find words, because 192 characters and symbols are distributed on the five-level keyboard, and the user remembers and is familiar with the five-level keyboard. The layout requires a large learning cost, and it is difficult to quickly find the key position of the required letter in a short time; the third is that the keying process is complicated, for example: you need to press the Ctrl key, Alt key, Shift key and i key at the same time to enter CtrlAltShift a vowel on the keyboard The fourth is key conflicts. The shortcut key settings of the operating system and many commonly used application software have occupied the Ctrl key, Alt key, and Shift key. Therefore, using the CtrlAltShift keyboard of Tibetan (PRC) to input Tibetan characters will cause key position conflicts. Due to the existence of the defects in the above-mentioned aspects, it is very inconvenient to use Tibetan (PRC) to input Tibetan.

It should be noted that Tibetan (PRC) uses a standard keyboard to input Tibetan characters and symbols to the computer. If the same input purpose is realized on a mobile information processing device, the above-mentioned defects will become more obvious. This is because mobile information processing devices generally use an on-screen keyboard, but due to the limitation of the screen size, the number of keys in the on-screen keyboard is strictly limited: generally no more than four rows, and each row does not exceed 10 keys.

To sum up, the Tibetan keyboard layout Tibetan (PRC) based on the standard keyboard has some obvious defects. If the design idea of Tibetan (PRC) is directly transferred to the Tibetan keyboard layout design of mobile information processing equipment, then These flaws will become more apparent. Therefore, it is necessary to redesign a Tibetan keyboard layout and input system for mobile information processing devices from a new perspective.

Contents of the invention

According to the characteristics of Tibetan characters, the present invention designs a Tibetan keyboard layout and input system based on 36 key positions, by adopting such as assigning only one key position for each consonant letter, and arranging each pair of similar letters on different keyboards Same position, using letters Elimination of repeated codes, font decomposition and other technologies enables efficient and accurate input of Tibetan syllables, Sanskrit Tibetan letters, Tibetan numbers, punctuation marks, and common graphic symbols on mobile information processing devices such as mobile phones and tablet computers.

1. Design a Tibetan keyboard layout based on 36 keys

The present invention designs a Tibetan keyboard layout for mobile information processing devices such as mobile phones and tablet computers. The keyboard layout is composed of a main keyboard, a first auxiliary keyboard and a second auxiliary keyboard; each keyboard has 36 key positions distributed In the four rows, the number of keys in each row is 10, 9, 10, 7 from top to bottom.

The main keyboard has 32 alphabetic keys and 4 function control keys. The 32 alphabetic keys are respectively arranged with 26 consonants, 4 vowels and 2 most commonly used punctuation marks. The 4 function control keys are return Car key (BKSPACE), line feed key (ENTER), SHIFT key and NUMLOCK key. Among them, the functions of the carriage return key (BKSPACE) and the line feed key (ENTER) are the same as those in other character keyboards, the function of the SHIFT key is to switch the keyboard from the current state to the first auxiliary keyboard, and the function of the NUMLOCK key is to switch the keyboard from The current state switches to the second auxiliary keyboard.

The correspondence between Tibetan letters, symbols, control functions and keys on the main keyboard is shown in Figure 1. This correspondence is in the order from top to bottom of each row and from left to right of the same row:

first row:

second line:

The third line: SHIFT, BKSPACE

The fourth line: NUMLOCK, ENTER

The first auxiliary keyboard has 32 alphabetic keys and 4 function control keys in total. The 32 alphabetic keys are respectively arranged with 9 consonants, 3 vowels and 20 commonly used symbols. The 4 function control keys are respectively Car key (BKSPACE), line feed key (ENTER), DEFAULT key and NUMLOCK key. Wherein, the function of the DEFAULT key is to switch the keyboard from the current state to the main keyboard, and the function of the NUMLOCK key is to switch the keyboard from the current state to the second auxiliary keyboard.

The correspondence between letters, symbols, control functions and keys on the first auxiliary keyboard is shown in Figure 2, and this correspondence is in the order from top to bottom of each row and from left to right of the same row:

first row:

second line:

The third line: DEFAULT, BKSPACE

The fourth line: NUMLOCK, ENTER

The second auxiliary keyboard has a total of 32 numeric symbol keys and 4 function control keys. The 32 numeric symbol keys are respectively arranged with 10 Tibetan numbers, 10 Tibetan half-value numbers and 12 less commonly used Tibetan symbols. The function control keys are the carriage return key (BKSPACE), the line feed key (ENTER), the DEFAULT key and the SHIFT key. These function control keys function the same as the function keys on the main keyboard or the primary auxiliary keyboard.

The correspondence between Tibetan numerals, symbols, control functions and key positions on the second auxiliary keyboard is shown in Figure 3. This correspondence is in the order from top to bottom of each row and from left to right of the same row:

first row:

second line:

The third line: SHIFT, BKSPACE

The fourth line: DEFAULT, ENTER

2. Assign only one key for each consonant

The number of Tibetan letters is relatively large, and each consonant letter has two forms: occupying and non-occupying, and individual consonants have four forms of appearance due to deformation. Therefore, if a key is assigned to each appearance form of a consonant, the total number of keys required will increase dramatically, resulting in defects such as difficulty in finding words, frequent keyboard switching, and complicated keying process.

The present invention only assigns a key position for each consonant letter without considering whether it is deformed and whether it occupies a place. For example, letters There are four forms of appearance, that is, occupying a place without deformation Occupation deformation Does not take up space and does not deform and non-occupying deformation But the invention is the letter Only assign a key, regardless of its various manifestations. The invention pairs letters and other consonant letters are similarly processed, that is, only one key position is allocated for each consonant letter.

The method of assigning only one key position for each consonant letter reduces the total number of required key positions, and overcomes the defects such as difficulty in finding words, frequent keyboard switching, and complicated keying process in the existing Tibetan keyboard layout.

3. Encode sequential substrings of syllables

From the perspective of keyboard input, the basis for judging whether the combination of several English letters is meaningful is whether they form a sequential substring of a word. In the present invention, the sequence substring refers to the character string in which the first r (r does not exceed the number of letters in a word) letters of a word are arranged according to their writing order in the word, for example: the sequence substring of the English word able They are a, ab, abl, and able respectively. For Tibetan, the basis for judging whether a combination of several letters is meaningful is whether they form a sequential substring of a syllable. Example: monogram as well as are all syllables sequential substring of .

The present invention encodes each sequential substring of Tibetan syllables in turn, for example: to syllables After encoding each sequential substring of the syllable, input the key position corresponding to each letter in the syllable in turn to realize the input of the syllable: (1) press key, enter (2) Press key, enter (3) Press key, enter (4) Press key, enter This coding method reflects the mutual restriction relationship between Tibetan letters and also dynamically reflects the process of Tibetan letters forming syllables.

4. Arrange each pair of similar letters in the same position on different keyboards

English letters are divided into upper and lower case, and the lower case and upper case of the same letter are distributed in the same position of the main keyboard and the first auxiliary keyboard. For example: the uppercase letter A has the same position on the first auxiliary keyboard as the lowercase letter a on the main keyboard.

There is no distinction between capital and small letters in Tibetan letters, but some consonant letters are somewhat similar: (1) letters respectively than letters one more mute Therefore, the letters and and as well as and Formed 3 pairs of similar letters; (2) letters and There is only a slight difference in pronunciation between the letters, so the letters and Attributed to 1 pair of similar letters; (3) letters respectively with letters Symmetry, therefore, the letters and and and and as well as and Form 5 pairs of similar letters. In this way, there are 9 pairs of similar letters between Tibetan consonants.

The present invention arranges 9 pairs of similar consonant letters on the same positions of different keyboards. due to consonants are used significantly more frequently than their similar letters The frequency of use, therefore, the present invention will use relatively high frequency consonants arranged in specific positions on the main keyboard, while their similar letters They are respectively arranged at the same position of the first auxiliary keyboard. This method of arranging each pair of similar letters in the same position on different keyboards is convenient for users to remember.

5. Utilize letters Eliminate duplicate codes

The repeated code problem in the Tibetan input system is unavoidable: when continuously inputting two consonants, since they can be combined left and right or up and down, the user needs to choose one of these two possible combinations. Therefore, the two consonants between consonants A possible combination constitutes a pair of repeated codes. For example: use the keyboard to enter sequentially and When the user is required to select from the left and right combinations of these two consonant letters combined with up and down choose one of the and Just constituted a pair of repeated codes. Statistics show that there are 58 pairs of repeated codes among the 4631 commonly used Tibetan syllables.

The invention utilizes letters Eliminate repeated codes: directly press the key corresponding to two consonant letters, then input the upper and lower combinations of these two consonant letters; press the first consonant letter, letter and the key position corresponding to the second consonant letter, then input the left and right combination of these two consonant letters. Example: Press the letter directly and For the corresponding keys, enter their upper and lower combinations while pressing the letters and Corresponding keys input consonants and left and right combinations

Compared with Tibetan (PRC) special designation m key to eliminate repeated code, the present invention utilizes letter The practice of eliminating repeated codes is more in line with Tibetan grammatical rules and further reduces the total number of required keys.

6. Glyph decomposition of some letters and symbols

Using Tibetan (PRC) to input all the Tibetan characters and symbols listed in the basic set of Tibetan character set, extended set A and extended set B requires 192 key positions. Too many key positions lead to the existing defects of Tibetan (PRC) the main reason. In order to input as many Tibetan characters and symbols as possible with as few key positions as possible, the present invention adopts the grapheme decomposition technology. The so-called grapheme decomposition is to decompose a compound grapheme into basic grapheme sequences according to its writing order, for example, compound vowel can be broken down into vowels and combination of up and down. The glyph decomposition of a character or symbol must comply with the writing rules and the Unicode character attribute database. The present invention mainly decomposes compound vowels, part of Sanskrit sounds, Tibetan consonant letters and part of graphic symbols:

compound vowel can be broken down into vowels and The combination of upper and lower, this decomposition is consistent with the vowel The writing rules for and the description of the vowel properties in the Unicode Character Properties Database. pair of compound vowels as well as A similar decomposition can be performed. For the decomposition of compound vowels in the present invention, see the characters with serial numbers 1 to 9 in Table 1 and the corresponding decomposition results.

Sanskrit Tibetan consonants decomposed into consonants and The upper and lower combinations of , this decomposition method conforms to the letter The writing rules of and the description of the properties of the letter in the Unicode character property database. Sanskrit Tibetan Consonant Alphabet as well as A similar decomposition can be performed. The present invention sees the characters of sequence number 10 to 18 in Table 1 and the corresponding decomposition results to the decomposition of compound Sanskrit Tibetan consonants.

punctuation marks can be broken down into two The left and right combinations, this decomposition method conforms to the punctuation marks The writing rules of and the description of the symbol properties in the Unicode character property database. graphic symbol can be decomposed into graphic symbols and Combination of left and right, for graphic symbols and Similar decomposition possible; graphical notation can be decomposed into three graphic symbols combination of A similar decomposition can be performed. For the decomposition of some symbols in the present invention, see the characters with serial numbers 19 to 24 in Table 1 and the corresponding decomposition results.

Since the present invention only assigns keys to the decomposed basic fonts, and realizes the input of compound fonts through these basic fonts, thereby greatly reducing the total number of required keys.

Table 1 The grapheme decomposition results of compound vowels, some Sanskrit Tibetan letters and some symbols

Advantages and positive effects of the invention

The present invention adopts such as only distributing a key position for each consonant letter, arranging every pair of similar letters at the same position of different keyboards, utilizing letter Eliminate multiple technologies such as repeated codes and font decomposition. Therefore, the present invention has the following four advantages or positive effects:

1. The present invention designs a kind of Tibetan keyboard layout and input system based on 36 keys, realizes Tibetan syllables, Sanskrit Tibetan letters, Tibetan numerals, punctuation marks on mobile information processing devices such as mobile phones and tablet computers And efficient and accurate input of commonly used graphic symbols.

2. The present invention only distributes a key position for each consonant letter, and only encodes each sequential substring of a Tibetan syllable, which greatly reduces the total number of required key positions, reduces the complexity of the keys, and improves the Enter efficiency.

3. compared with Tibetan (PRC) special designation m key eliminates repeated code, the present invention utilizes letter The practice of eliminating repeated codes is more in line with Tibetan grammatical rules and further reduces the total number of required keys.

4. The present invention will use consonant letters with relatively high frequency arranged in specific positions on the main keyboard, while their similar letters They are respectively arranged at the same position of the first auxiliary keyboard, and this layout mode is conducive to user memory.

Description of drawings

Figure 1 is a layout diagram of the main keyboard.

Fig. 2 is a layout diagram of the first auxiliary keyboard.

Fig. 3 is a layout diagram of the second auxiliary keyboard.

Example of implementation

The present invention designs a Tibetan keyboard layout and input system based on 36 key positions, and realizes consonant letters, vowel letters, Tibetan numerals, Tibetan half-value numerals, Efficient and accurate input of punctuation marks, graphic symbols, syllables, decomposable Sanskrit Tibetan letters, Tibetan numbers, punctuation marks, and commonly used graphic symbols. Examples of specific implementations are as follows:

(1) The input method of consonants, vowels, Tibetan numbers, Tibetan half-value numbers, punctuation marks and graphic symbols distributed on the main keyboard, the first auxiliary keyboard and the second auxiliary keyboard: directly press the corresponding Key position;

(2) The input method of syllables: according to the writing order, input the letters that make up a syllable in turn. In particular, if you need to continuously input two consonant letters and want to combine them left and right, you need to use letters Specifically, press the first consonant, letter And the key corresponding to the second consonant. Example: press the letters in sequence and corresponding keys, input their up and down combinations while pressing the letters corresponding key position, then input the letter and horizontal combination of

(3) Decomposable input method of Sanskrit and Tibetan consonant letters: press the letters in turn and The corresponding keys can realize Sanskrit Tibetan consonant letters input; letters as well as Both are upper and lower combinations of two consonant letters, which can be input similarly;

(4) Punctuation marks Input method: Press the punctuation mark twice in succession The corresponding keys can input punctuation marks

(5) Input method of some compound graphic symbols:

①Press the symbols in turn and Corresponding keys can input symbols Press the symbol twice Corresponding keys can input symbols Press the symbol twice The corresponding keys can be entered

②Press the symbol three times in a row Corresponding keys can input symbols Press the symbol three times in succession Corresponding keys can input symbols

Claims (6)

1. the Tibetan language keyboard layout based on 36 key mappings and input system, this keyboard layout is made up of Master Keyboard, the first auxiliary keyboard and the second auxiliary keyboard, each keyboard has 36 key mappings, be distributed in four lines, the key total of each row is 10,9,10,7 from top to bottom successively, it is characterized in that Tibetan language letter, symbol and the corresponding relation between controlling functions and key mapping on Master Keyboard according to each row is from top to bottom, with a line order from left to right:

The first row:

Second row:

The third line: SHIFT, bKSPACE

Fourth line: NUMLOCK, eNTER

Letter on first auxiliary keyboard, symbol, corresponding relation between controlling functions and key mapping according to each row are from top to bottom, with a line order from left to right:

The first row:

Second row:

The third line: DEFAULT, bKSPACE

Fourth line: NUMLOCK, eNTER

Tibetan language numeral on second auxiliary keyboard, symbol, corresponding relation between controlling functions and key mapping according to each row are from top to bottom, with a line order from left to right:

The first row:

Second row:

The third line: SHIFT, bKSPACE

Fourth line: DEFAULT, eNTER.

2. a kind of Tibetan language keyboard layout according to claim 1 and input system, is characterized in that being arranged in 9 in the same position of different keyboard similar Tibetan language consonant.

3. a kind of Tibetan language keyboard layout according to claim 1 and input system, is characterized in that for each consonant only distributes a key mapping.

4. a kind of Tibetan language keyboard layout according to claim 1 and input system, is characterized in that encoding to each order substring of Tibetan language syllable successively.

5., according to claim 1 and a kind of Tibetan language keyboard layout according to claim 4 and input system, it is characterized in that utilizing letter eliminate repeated code: directly press the key mapping that two consonants are corresponding, then input the combination up and down of these two consonants; Press first consonant, letter successively the key mapping corresponding with second consonant, then input the left and right combination of these two consonants.

6., according to claim 1, claim 4 and a kind of Tibetan language keyboard layout according to claim 5 and input system, it is characterized in that the mode of consonant, vowel, Tibetan language numeral, Tibetan language half value numeral, punctuation mark, graphical symbol, syllable, decomposable Brahma-sutra Tibetan consonant, Tibetan language numeral, punctuation mark and conventional graphical symbol is followed successively by:

(1) input mode of the consonant on Master Keyboard, the first auxiliary keyboard and the second auxiliary keyboard, vowel, Tibetan language numeral, Tibetan language half value numeral, punctuation mark and graphical symbol is distributed in: directly press corresponding key mapping and enter;

(2) input mode of syllable: according to sequential write, inputs each letter of a formation syllable successively, especially, if need continuously input two consonants and wish left and right combination between them, then needs by letter specifically, be exactly press first consonant, letter successively and the key mapping that second consonant is corresponding, such as: press letter successively with corresponding key mapping, then input their combination up and down and press letter successively corresponding key mapping, then input alphabet with transverse combination

(3) decomposable Brahma-sutra Tibetan consonant input mode: press letter successively with corresponding key mapping can realize Brahma-sutra Tibetan consonant input; Letter and be all the combination up and down of two consonants, can similarly input;

(4) punctuation mark input mode: continuously by twice punctuation mark corresponding key mapping can inputting punctuation mark

(5) input mode of part compound pattern symbol:

1. symbol is pressed successively with corresponding key mapping can incoming symbol continuously by two sub-symbols corresponding key mapping can incoming symbol continuously by two sub-symbols corresponding key mapping can input

2. continuously by three sub-symbols corresponding key mapping can incoming symbol continuously by three sub-symbols corresponding key mapping can incoming symbol