Patent ID: 11957476
Assignee: HAII CO, LTD.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 8:
9. A device for identifying dementia of a user, the device comprising:
a storage configured to store at least one program instruction; and
at least one processor configured to execute the at least one program instruction,
wherein the at least one processor:
performs a first task causing a first object configured to be displayed on a first region of a screen displayed on a user terminal configured to induce the user's gaze of the user terminal to stare at the first region,
causes at least one camera of the user terminal to acquire an image of the user's eye while the first task is performed;
recognizes, by analyzing the image of the user's eye acquired while the first task is performed, that the user is staring at the first object for a preset time by recognizing that a central point position of the user's pupil exists within a preset region, wherein the preset region corresponds to a region in which the central point position of the user's pupil is located when the user's eye stares at a center of the screen, and wherein the image comprise a plurality of pixels, and
after recognizing that the user has stared at the first object for the preset time, performs a second task causing at least one object, which induces the user's gaze to move to a region of the screen other than the first region, instead of the first object on the screen of the user terminal, configured to be displayed in the region of the screen other than the first region, wherein the first task and the second task are performed a preset number of times;
causes the at least one camera of the user terminal to acquire another image of the user's eye while the second task is performed the preset number of times;
by analyzing the another image of the user's eye, generates gaze information related to the user while the second task is performed the preset number of times; wherein the gaze information comprises at least one of information on a number of times that the user correctly performed a preset gaze task, information on a number of times the user failed to perform the preset gaze task correctly, information on whether the user's gaze continues to stare at a specific point for the preset time, information on a time elapsed from a time point that a screen comprising the at least one object is displayed to a time point that the user's gaze moves to any one of the at least one object, information on a movement speed of the user's gaze, and information on whether the user's gaze is accurately staring at a point related to the preset gaze task;
calculates a score by inputting the gaze information into a dementia identification model; and
determines whether the user has dementia based on the score;
wherein either:
(a) the at least one object comprises: text displayed instead of the first object on the first region; and a second object and third object respectively displayed in a second region and third region different from the first region; and
the first region is located between the second region and the third region, and
the preset gaze task comprises at least one of: a task to stare at an object related to a meaning of the text among the second object and the third object; and a task to stare at an object related to a color of the text among the second object and the third object; or
(b) the at least one object comprises a gaze-inducing object displayed in any one area of a second region and third region different from the first region; and
the first region is located between the second region and the third region; and
the preset gaze task comprises a task to stare in a direction opposite to a direction in which the gaze-inducing object is located.