US 12,260,775 B2
Apparatus for braille input and method thereof
Jae Woo Ahn, Seongnam-si (KR)
Assigned to Braillist Inc., Incheon (KR)
Appl. No. 16/965,300
Filed by Braillist Inc., Incheon (KR)
PCT Filed Jan. 31, 2019, PCT No. PCT/KR2019/001395
§ 371(c)(1), (2) Date Feb. 11, 2021,
PCT Pub. No. WO2019/151809, PCT Pub. Date Aug. 8, 2019.
Claims priority of application No. 10-2018-0012014 (KR), filed on Jan. 31, 2018.
Prior Publication US 2021/0183266 A1, Jun. 17, 2021
Int. Cl. G09B 21/02 (2006.01); G06F 3/02 (2006.01)
CPC G09B 21/02 (2013.01) [G06F 3/0219 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A braille input device comprising:
a keypad having a plurality of keys,
wherein the keypad comprises:
three left side corresponding keys corresponding to three dots disposed at a left side column of braille;
three right side corresponding keys corresponding to three dots disposed at a right side column of braille;
a plurality of left side multi keys, each left side multi key corresponding to two or more keys among the left side corresponding keys; and
a plurality of right side multi keys, each right side multi key corresponding to two or more keys among the right side corresponding keys, and
wherein the plurality of left side multi keys and the plurality of right side multi keys are disposed at columns different from each other.