Method and apparatus for remote pointing
First Claim
1. A remote pointing method comprising:
- projecting an optical signal that is periodically expanded and/or reduced around an origin;
detecting whether the optical signal is received using a plurality of optical sensors that are two-dimensionally disposed;
detecting the position of the origin, which exists within a position recognition range including at least a polygon having the optical sensors as vertexes, based on the results of detection of the optical sensors;
radiating a visible laser beam at the origin of the optical signal to allow a user to visibly recognize the origin; and
generating an infrared signal indicating a time instant when an area of the optical signal projected on the position recognition range starts to increase around the origin and an infrared signal indicating a time instant when the area of the optical signal is a maximum,wherein the detecting of the position of the origin comprises receiving the infrared signals, recognizing the time instant when the area of the optical signal projected on the position recognition range starts to increase, and comparing the recognized time instant with a time instant when each optical sensor receives the optical signal to calculate the position of the origin.
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Accused Products
Abstract
A remote pointing apparatus including a remote control that generates an optical signal that is periodically expanded and/or reduced around the origin and an optical sensor that detects whether the optical signal is received, and a remote pointing method therefor. The remote pointing method includes projecting an optical signal that is periodically expanded and/or reduced around an origin; detecting whether the optical signal is received using a plurality of optical sensors that are two-dimensionally disposed; and detecting the position of the origin, which exists within a position recognition range including at least a polygon having the optical sensors as vertexes, based on the results of detection of the optical sensors. Since the remote pointing apparatus and method do not need a light receiving panel that is installed to fully cover a display screen or installed in vertical and horizontal directions of the display panel in order to receive a laser beam, a manufacturing cost thereof can be reduced.
111 Citations
65 Claims
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1. A remote pointing method comprising:
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projecting an optical signal that is periodically expanded and/or reduced around an origin; detecting whether the optical signal is received using a plurality of optical sensors that are two-dimensionally disposed; detecting the position of the origin, which exists within a position recognition range including at least a polygon having the optical sensors as vertexes, based on the results of detection of the optical sensors; radiating a visible laser beam at the origin of the optical signal to allow a user to visibly recognize the origin; and generating an infrared signal indicating a time instant when an area of the optical signal projected on the position recognition range starts to increase around the origin and an infrared signal indicating a time instant when the area of the optical signal is a maximum, wherein the detecting of the position of the origin comprises receiving the infrared signals, recognizing the time instant when the area of the optical signal projected on the position recognition range starts to increase, and comparing the recognized time instant with a time instant when each optical sensor receives the optical signal to calculate the position of the origin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A remote pointing apparatus comprising:
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a remote controller that generates an optical signal that is periodically expanded and/or reduced around an origin; a plurality of optical sensors that are disposed at the periphery of a position recognition range; and an arithmetic unit that calculates the position of the origin, which exists within the position recognition range, based on a state in which the optical signal is received by each optical sensor, wherein the remote controller comprises a laser beam source which radiates a visible laser beam at the origin of the optical signal in order to allow a user to visibly recognize the origins, wherein the remote controller further comprises an infrared ray emitter that generates an infrared signal indicating a time instant when an area of the optical signal projected on the position recognition range starts to increase around the origin and an infrared signal indicating a time instant when the area of the optical signal is a maximum, and wherein the arithmetic unit receives the infrared signals, recognizes the time instant when the area of the optical signal projected on the position recognition range starts to increase, and compares the recognized time instant with a time instant when each optical sensor receives the optical signal to calculate the position of the origin. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A remote controller comprising:
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a light source that generates a diffusive optical signal; a light transmission adjustor that adjusts the projected shape of the optical signal; and an infrared ray emitter which generates an infrared signal indicating a time instant when an area of the optical signal projected on the position recognition range starts to increase around the origin and an infrared signal indicating a time instant when the area of the optical signal is a maximum. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
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39. A display apparatus comprising:
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a plurality of optical sensors that detect a state in which an optical signal that is periodically expanded and/or reduced around an origin is received and are disposed at the periphery of a display screen; an arithmetic unit that calculates the position of the origin based on the receiving state detected by each optical sensor; and an infrared sensor that detects an infrared signal indicating a time instant when an area of the optical signal projected on the display screen starts to increase around the origin and an infrared signal indicating a time instant when the area of the optical signal is a maximum, and wherein the arithmetic unit receives the infrared signals, recognizes the time instant when the area of the optical signal projected on the display screen starts to increase, and compares the recognized time instant with a time instant when each optical sensor receives the optical signal to calculate the position of the origin. - View Dependent Claims (40, 41, 42, 43)
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44. A system, comprising:
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a remote controller, comprising; an invisible light source to transmit invisible light around an origin when the invisible light source is active, a laser source, which is surrounded by the invisible light source, to indicate the origin of the invisible light when the laser source is active, a light transmission adjuster, which is positioned in front of the invisible light source, to adjust the transmission state of the invisible light such that the radius of transmitted invisible light is expanded, reduced, or expanded and reduced around the origin at a predetermined period, a pointer on/off button to activate and deactivate the laser source, a selection button to register a selection, and an infrared ray source to transmit an infrared control signal indicating the selection, whether the laser source is inactive, and whether the invisible light source is active; a display unit, comprising; three optical sensors, which are positioned at predetermined positions on the display unit, wherein each optical sensor detects the invisible light at a particular time, and an infrared sensor to detect the infrared control signal; an arithmetic unit to calculate the origin of the invisible light based on the predetermined positions of the optical sensors, the predetermined period of expansion or reduction of the pattern of transmitted invisible light, a time of a start of transmission of the invisible light, and the particular times; and a processor to cause the display unit to indicate the calculated origin when the laser source is inactive. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. A remote controller, comprising:
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an invisible light source to transmit invisible light around an origin when the invisible light source is active; a laser source, which is surrounded by the invisible light source, to indicate the origin of the invisible light when the laser source is active; a light transmission adjuster, which is positioned in front of the invisible light source, to adjust the transmission state of the invisible light such that the radius of transmitted invisible light is expanded, reduced, or expanded and reduced around the origin at a predetermined period; and an infrared ray source to transmit an infrared control signal indicating the selection, whether the laser source is inactive, and a start of transmission of the invisible light. - View Dependent Claims (61, 62, 63, 64, 65)
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Specification