Head mounted display
AssigneeLG Electronics Inc.
InventorsSoungmin Im, Sungjin Kim, Sungmin Baek
Life of this patent
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Abstract
Disclosed is a head mounted display (HMD) having light emitting devices. The HMD includes a body having a plurality of surfaces; and a plurality of light emitting units formed on the plurality of surfaces and configured to emit light to outside of the body, wherein each of the plurality of light emitting units includes at least four light emitting devices that are disposed in a straight line in a spaced manner such that a specific cross ratio defines spacing for each of the plurality of light emitting units, a cross ratio of one of the plurality of light emitting units being different from cross ratios of other light emitting units among the plurality of light emitting units.
Claims20
A head mounted display, comprising:
- a body having a plurality of surfaces;
- and
- a plurality of light emitting units, each of the plurality of light emitting units formed on a corresponding one of the plurality of surfaces and configured to emit light to outside of the body,
- wherein each of the plurality of light emitting units includes at least four light emitting devices that are disposed in a straight line in a spaced manner such that a specific cross ratio defines spacing for each of the plurality of light emitting units, a cross ratio of one of the plurality of light emitting units being different from cross ratios of other light emitting units among the plurality of light emitting units wherein the cross ratio of the one of the plurality of light emitting units, including four light emitting devices positioned at four points A, B, C, and D, respectively, that are disposed on a same straight line, is represented by the following formula:
- (
- A
- ,
- B
- ;
- C
- ,
- D
- )
- =
- d
- AC
- *
- d
- BD
- d
- BC
- *
- d
- AD
- ,
- wherein dAC indicates a separation distance between A and C, dBD indicates a separation distance between B and D, dBC indicates a separation distance between B and C, and dAD indicates a separation distance between A and D,
- wherein each of the cross ratios of the plurality of light emitting units is a projective constant, and
- wherein one of the plurality of surfaces, which is directed to face an external camera that is provided outside the head mounted display, is captured by the external camera and recognized based on a corresponding one of the different cross ratios of the plurality of light emitting units.
A head mounted display system, comprising:
- a body having a plurality of surfaces;
- a plurality of light emitting units, each of the plurality of light emitting units formed on a corresponding one of the plurality of surfaces and configured to emit light to outside of the body;
- an external camera that is provided outside the body and configured to capture the body;
- and
- a control device configured to determine a posture of the body based on an image received via the external camera,
- wherein each of the plurality of light emitting units includes at least four light emitting devices that are disposed in a straight line in a spaced manner such that a specific cross ratio defines spacing for each of the plurality of light emitting units, a cross ratio of one of the plurality of light emitting units being different from cross ratios of other light emitting units among the plurality of light emitting units wherein the cross ratio of the one of the plurality of light emitting units, including four light emitting devices positioned at four points A, B, C, and D, respectively, that are disposed on a same straight line, is represented by the following formula:
- (
- A
- ,
- B
- ;
- C
- ,
- D
- )
- =
- d
- AC
- *
- d
- BD
- d
- BC
- *
- d
- AD
- ,
- wherein dAC indicates a separation distance between A and C, dBD indicates a separation distance between B and D, dBC indicates a separation distance between B and C, and dAD indicates a separation distance between A and D,
- wherein each of the cross ratios of the plurality of light emitting units is a projective constant, and
- wherein at least one of the plurality of surfaces, which is directed to face the external camera, is captured by the external camera and recognized based on a corresponding one of the different cross ratios of the plurality of light emitting units.
Dependencies are inferred from the claim text.