Electronic device and method for controlling the electronic device thereof

1 . An electronic device comprising:

a projection part;

a memory storing at least one instruction; and

at least one processor,

wherein the projection part includes a split prism and is configured for transmitting a part of light emitted from a light source in a front direction and reflecting a remaining part of light on at least one inclined surface in a lateral direction, and

wherein the at least one processor is configured to:

convert an image into a multi-sided image to be projected to a plurality of projection surfaces, and

control the projection part to project the converted multi-sided image to the plurality of projection surfaces via the split prism,

wherein the split prism includes:

a hole positioned in its central region configured to transmit a part of light in the front direction, and

a plurality of inclined surfaces positioned in a plurality of lateral direction of the hole for reflecting a part of the light in respective lateral directions.

2 . The device as claimed in claim 1 , wherein the plurality of inclined surfaces includes:

a first inclined surface positioned in a first lateral direction of the hole for reflecting a part of light in the first lateral direction,

a second inclined surface positioned in a second lateral direction of the hole for reflecting a part of light in the second lateral direction,

a third inclined surface positioned in a third lateral direction of the hole for reflecting a part of light in the third lateral direction, and

a fourth inclined surface positioned in a fourth lateral direction of the hole for reflecting a part of light in the fourth lateral direction.

3 . The device as claimed in claim 2 , wherein the at least one processor is configured to:

segment the image, corresponding to a received signal, into a front region and first, second, third, and fourth lateral regions respectively corresponding to the first, second, third, and fourth lateral directions,

convert the front region and the first, second, third, and fourth lateral regions respectively into a front image and first, second, third, and fourth lateral images by using at least one conversion matrix, and

acquire the multi-sided image including the front image and the first, second, third, and fourth lateral images.

4 . The device as claimed in claim 3 , wherein the at least one processor is configured to:

acquire at least one of: information on the image corresponding to the received signal, information on another image, or real-time environment information,

segment the image corresponding to the received signal into the front region and at least one lateral region corresponding to at least one of the first, second, third, and fourth lateral directions,

convert the front region and the at least one lateral region respectively into the front image and at least one lateral image by using the at least one conversion matrix,

generate one or more lateral images corresponding to at least one remaining direction among the first, second, third, and fourth lateral directions based on at least one of the information on the image corresponding to the received signal, the information on another image, or the real-time environment information, and

acquire the multi-sided image including the front image, the at least one lateral image, and one or more lateral images.

5 . The device as claimed in claim 4 , wherein the at least one processor is configured so that a type and/or display position of an image displayed on the one or more lateral image can be changed by a user input.

6 . The device as claimed in claim 1 , wherein the at least one processor is configured so that the electronic device can operate in at least one of: a first projection mode of projecting the image, corresponding to a received signal, to the projection surface in the front direction, and a second projection mode of converting the image corresponding to the received signal into the multi-sided image and projecting the multi-sided image to the plurality of projection surfaces.

7 . The device as claimed in claim 6 , wherein the projection part further includes a liquid crystal lens disposed between at least a prism through which light reflected by a digital micromirror device (DMD) passes and the split prism, and

wherein the at least one processor is configured to operate in one of the first projection mode and the second projection mode by applying a voltage to the liquid crystal lens to adjust a focal length of the liquid crystal lens.

8 . The device as claimed in claim 1 , further comprising a sensor,

wherein the at least one processor is configured to:

acquire information on a distance between the projection surface and the electronic device based on a sensing value acquired by the sensor, and

adjust sizes of a plurality of images included in the multi-sided image and/or perform keystone correction based on the information on the distance between the projection surface and the electronic device.

9 . The device as claimed in claim 1 , wherein comprising a sensor, and wherein the at least one processor is configured to:

acquire information on at least one of a user position, a position of the electronic device, or a type of projection surface based on a sensing value acquired by the sensor, and

determine an image segmentation type based on the information on at least one of the user position, the position of the electronic device, or the type of projection surface.

10 . An electronic device comprising:

a projection part;

a memory storing at least one instruction;

at least one processor,

wherein the projection part includes a split prism and is configured for transmitting a part of light emitted from a light source in a front direction and reflecting a remaining part of light on at least one inclined surface in a lateral direction; and

a sensor,

wherein the at least one processor is configured to:

acquire information on at least one of a user position, a position of the electronic device, or a type of projection surface based on a sensing value acquired by the sensor,

determine an image segmentation type based on the information on at least one of the user position, the position of the electronic device, or the type of projection surface,

convert an image into a multi-sided image to be projected to a plurality of projection surfaces based at least in part on the determined image segmentation type, and

control the projection part to project the converted multi-sided image to the plurality of projection surfaces via the split prism.

11 . The device as claimed in claim 10 , wherein the split prism includes:

a hole positioned in its central region to transmit a part of light in the front direction,

a first inclined surface positioned in a first lateral direction of the hole and reflecting a part of light in the first lateral direction,

a second inclined surface positioned in a second lateral direction of the hole and reflecting a part of light in the second lateral direction,

a third inclined surface positioned in a third lateral direction of the hole and reflecting a part of light in the third lateral direction, and

a fourth inclined surface positioned in a fourth lateral direction of the hole and reflecting a part of light in the fourth lateral direction,

wherein the at least one processor is configured to:

segment the image, corresponding to a received signal, into a front region and first, second, third, and fourth lateral regions respectively corresponding to the first, second, third, and fourth lateral directions,

convert the front region and the first, second, third, and fourth lateral regions respectively into a front image and first, second, third, and fourth lateral images by using at least one conversion matrix, and

acquire the multi-sided image including the front image and the first, second, third, and fourth lateral images.

12 . The device as claimed in claim 10 , further comprising a sensor,

wherein the at least one processor is configured to:

acquire information on a distance between the projection surface and the electronic device based on a sensing value acquired by the sensor, and

adjust sizes of a plurality of images included in the multi-sided image and/or perform keystone correction based on the information on the distance between the projection surface and the electronic device.

13 . A controlling method of an electronic device which includes a projection part, the projection part including a split prism for transmitting a part of light emitted from a light source in a front direction and reflecting a remaining part of light on at least one inclined surface in a lateral direction, the method comprising:

converting an image corresponding to a received signal into a multi-sided image to be projected to a plurality of projection surfaces; and

projecting the converted multi-sided image to the plurality of projection surfaces through the split prism,

wherein the split prism includes:

a hole positioned in its central region to transmit a part of light in the front direction, and

a plurality of inclined surfaces positioned in a plurality of lateral direction of the hole for reflecting a part of the light in respective lateral directions.

14 . The method as claimed in claim 13 , wherein the plurality of inclined surfaces includes:

a first inclined surface positioned in a first lateral direction of the hole and reflecting a part of light in the first lateral direction,

a second inclined surface positioned in a second lateral direction of the hole and reflecting a part of light in the second lateral direction,

a third inclined surface positioned in a third lateral direction of the hole and reflecting a part of light in the third lateral direction, and

a fourth inclined surface positioned in a fourth lateral direction of the hole and reflecting a part of light in the fourth lateral direction.

15 . The method as claimed in claim 14 , wherein the converting includes:

segmenting the image corresponding to the received signal into a front region and first, second, third, and fourth lateral regions respectively corresponding to the first, second, third, and fourth lateral directions;

converting the front region and the first, second, third, and fourth lateral regions respectively into a front image and first, second, third, and fourth lateral images based on at least one conversion matrix; and

acquiring the multi-sided image including the front image and the first, second, third, and fourth lateral images.

16 . The method as claimed in claim 15 , further comprising acquiring at least one of information on the image corresponding to the received signal, information on another image, or real-time environment information,

wherein the converting includes:

segmenting the image corresponding to the received signal into the front region and at least one lateral region corresponding to at least one of the first, second, third, and fourth lateral directions;

converting the front region and the at least one lateral region respectively into the front image and at least one lateral image by using the at least one conversion matrix;

generating one or more lateral images corresponding to at least one remaining direction among the first, second, third, and fourth lateral directions based on at least one of the information on the image corresponding to the received signal, the information on another image, or the real-time environment information; and

acquiring the multi-sided image including the front image, the at least one lateral image and one or more lateral images.

17 . The method as claimed in claim 16 , wherein a type and/or display position of an image displayed via the one or more lateral images is changed based on a user input.

18 . The method as claimed in claim 13 , further comprising operating in at least one of a first projection mode of projecting the image corresponding to the received signal to the projection surface in the front direction, and a second projection mode of converting the image corresponding to the received signal into the multi-sided image and projecting the multi-sided image to the plurality of projection surfaces.

19 . The method as claimed in claim 13 , comprising:

acquiring information on at least one of a user position, a position of the electronic device, or a type of projection surface based on a sensing value acquired by a sensor; and

determining an image segmentation type based on the information on at least one of the user position, the position of the electronic device, or the type of projection surface,

where the image is converted into the multi-sided image based on the determined image segmentation type.