User-friendly brahmi-derived hindi keyboard

• US 20050017955A1
• Filed: 06/23/2004
• Published: 01/27/2005
• Est. Priority Date: 01/03/2002
• Status: Active Grant

• Current Assignee: Mahesh Jayachandra
• Original Assignee: Mahesh Jayachandra
• Inventors: Jayachandra, Mahesh
• Granted Patent: US 7,420,543 B2
• Time in Patent Office: Days
• US Class Current: 345/171
• CPC Class Codes: G06F 3/018 Input/output arrangements for oriental characters

Abstract

A character input system using a keyboard having a plurality of keys, at least some of the keys each being assigned at least one Brahmi-derived (e.g., Hindi) script character. At least one key may be assigned a halant. The key assignments may be spatially grouped on the keyboard according to vowels, consonants and the phonetic characteristics of the characters. Hindi script communications may be inputted quickly and efficiently as a result of the arrangement of Hindi character keys and a simplified Hindi character set provided through use of the halant character.

Claims

1. A character input system using a keyboard comprising a plurality of keys, at least some of the keys each being assigned at least one Brahmi-derived script character, and at least one key being assigned a halant, the key assignments being spatially grouped on the keyboard according to vowels and consonants and arranged in accordance with the manner the vowels and consonants are taught, the system being configured such that diacritic vowel signs (Matras) may be accessed by pressing a modifier key with the corresponding vowel key;

and half-forms of consonants may be accessed by pressing a modifier key with the corresponding consonant key.

2. The character input system of claim 1 wherein the consonants are grouped according Vargs and Non-Vargs arranged in the order in which the characters are taught.

3. The character input system of claim 1 wherein the modifier key is the SHIFT key.

4. The character input system of claim 3 wherein the keyboard comprises:

a group of vowel keys each being assigned a script vowel, the vowel keys comprising keys corresponding to the number-row on a standard keyboard;

a first Varg group of phonetically-related consonant keys comprising keys corresponding to Q-W-E-R-T on a standard keyboard;

a second Varg group of phonetically-related consonant keys comprising keys corresponding to A-S-D-F-G on a standard keyboard;

a third Varg group of phonetically-related consonant keys comprising keys corresponding to Z-X-C-V-B on a standard keyboard;

a fourth Varg group of phonetically-related consonant keys comprising keys corresponding to Y-U-I-O-P on a standard keyboard; and

a fifth Varg group of phonetically-related consonant keys comprising keys corresponding to H-J-K-L-;

on a standard keyboard.

a final group of Non-Varg consonant keys comprising an upper set of keys corresponding to N-M-,-.-/ and a lower set of keys below the upper set of keys and to the right of the space bar on a standard keyboard.

5. The character input system of claim 1 wherein the keyboard is adapted for use with one of the group of Hindi, Bengali, Telugu, Marathi, Tamil, Gujarati, Kannada, Malayalam, Oriya, Punjabi, Assamese, Manipuri and Sanskrit.

6. The character input system of claim 1 wherein the keyboard is adapted for use with one of the group of Sinhala, Nepali, Burmese, Tibetan, Laotian, Thai, Khmer, Javanese, Bali, Batak, Bugis/Buginese and Tagalog.

7. A method of adapting a keyboard for a language that uses a Brahmi-derived script such as the Hindi script, the keyboard being linked to a computer system, the method comprising:

mapping vowels characters to vowel keys;

mapping initial consonant characters to initial consonant keys;

mapping final consonant characters to final consonant keys; and

mapping a halant character to a halant key;

if a vowel key, initial consonant key, or final consonant key is pressed, sending a signal to the computer system corresponds to the character that is mapped to the pressed key;

if a modifier key is pressed in coordination with pressing an initial consonant key, a vowel key, or a final consonant key, sending a signal to the computer system that corresponds to Matra (for vowels) or a half-form of the character that is mapped to the key that was pressed in coordination with the modifier key.

8. The method of claim 7 wherein the vowel keys are arranged in a row on the keyboard.

9. The method of claim 7 wherein the initial consonant keys are grouped on the keyboard according to Vargs, the keys corresponding to consonants in each Varg being arranged on a single row.

10. The method of claim 7 wherein the final consonant characters are mapped to keys on two horizontally adjacent rows of keys.

11. A computer system for use with a language that uses Brahmi-derived script, the computer system comprising:

a processor;

a memory system;

a graphical user interface; and

a keyboard comprising a plurality of keys, at least some of the keys each being assigned at least one Brahmi-derived script character, the key assignments being spatially arranged on the keyboard according to the order in which the characters are taught;

wherein the system makes half-forms of characters available by pressing a modifier key in coordination with a key that is assigned to a corresponding full character;

wherein the system makes a Brahmi-derived script environment available by pressing a single key.

12. The system of claim 11 wherein the keyboard comprises a virtual keyboard.

13. The system of claim 11 wherein the virtual keyboard comprises a touch-sensitive screen.

14. A computer-readable medium embodying instructions to:

map a Brahmi-derived script character to a key on a keyboard that operates with a computer system;

if the key is pressed, send a signal to the computer system corresponds to the character that is mapped to the pressed key;

if a modifier key is pressed in coordination with pressing the key, send a signal to the computer system that corresponds to a half-form of the character that is mapped to the key.

15. The computer-readable medium of claim 14 further embodying instructions to:

map the Hindi vowels to respective vowel keys;

map the Hindi initial consonants to respective initial consonant keys; and

map the Hindi final consonants to respective final consonant keys; and

map the Hindi numerals to the number pad.

17. The computer-readable medium of claim 14 further embodying instructions to map a halant to a key and, if the halant key is pressed, send a signal that corresponds to the halant.

18. The computer-readable medium of claim 14 further embodying instructions for receiving a signal on the computer system and, in response to the signal, presenting a Hindi character on a display device.

19. The computer-readable medium of claim 14 further embodying instructions to, if a second modifier key is pressed in conjunction with a character key, send a signal that corresponds to a character for the pressed key according to a second keyboard configuration.

20. The computer-readable medium of claim 19 wherein the second keyboard configuration comprises one a QWERTY configuration, a DVORAK configuration, or a Spanish language keyboard.

21. A kit for adapting a computer system for use with a Brahmi-derived language such as Hindi, the kit comprising:

a computer-readable medium embodying instructions to;

map Brahmi-derived script characters to keys on a keyboard that operates with a computer system;

if a key is pressed, send a signal to the computer system corresponds to the character that is mapped to the pressed key;

if a modifier key is pressed in coordination with pressing a second key, send a signal to the computer system that corresponds to a half-form of the character that is mapped to the second key;

and

at least one of;

a computer keyboard skin configured to overlay a keyboard, the skin being marked to indicate the Brahmi-derived script characters that are mapped to particular keys on the keyboard;

a set of replacement keys or stickers for installation on a computer keyboard, the replacement keys or stickers being marked to indicate the Brahmi-derived script characters that are mapped to particular keys on the keyboard;

or

a replacement keyboard comprising keys that are marked to indicate the Brahmi-derived script characters that are mapped to particular keys on the keyboard.