Pointer control method, pointing apparatus, and host apparatus therefor
First Claim
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1. A pointing apparatus, comprising:
- a user input unit to generate a user command; and
an ultrasound transmitting unit to receive the user command to transmit an ultrasound signal, to generate the ultrasound signal, and to transmit the ultrasound signal continuously or exclusively when the command is given to transmit the ultrasound signal to a host apparatus;
wherein the user input unit comprises a mode selection button to set an absolute mode and an ultrasound transmission button; and
wherein the ultrasound transmitting unit generates and sends the ultrasound signal to the host apparatus, when the user command to transmit the ultrasound signal, via the ultrasound transmission button, is received and the absolute mode is selected.
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Abstract
A host apparatus includes an ultrasound receiving unit receiving an ultrasound signal from a pointing apparatus and outputting an electric signal. A controlling unit calculates a position of a pointer on a display screen corresponding to a position of the pointing apparatus based on the electric signal from the ultrasound receiving unit, and outputs a control signal to the display screen to position the pointer at the calculated position of the display screen.
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Citations
21 Claims
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1. A pointing apparatus, comprising:
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a user input unit to generate a user command; and an ultrasound transmitting unit to receive the user command to transmit an ultrasound signal, to generate the ultrasound signal, and to transmit the ultrasound signal continuously or exclusively when the command is given to transmit the ultrasound signal to a host apparatus; wherein the user input unit comprises a mode selection button to set an absolute mode and an ultrasound transmission button; and wherein the ultrasound transmitting unit generates and sends the ultrasound signal to the host apparatus, when the user command to transmit the ultrasound signal, via the ultrasound transmission button, is received and the absolute mode is selected. - View Dependent Claims (2)
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3. A host apparatus, comprising:
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a display screen; an ultrasound receiving unit to receive an ultrasound signal from a pointing apparatus, and to output an electric signal; and a controlling unit to calculate a position of a pointer on the display screen corresponding to a position of the pointing apparatus based on the electric signal output from the ultrasound receiving unit, and to output a control signal to the display screen to position the pointer at the calculated position on the display screen; wherein the ultrasound receiving unit receives the ultrasound signal at least three vertices of the display screen; and wherein the controlling unit calculates the position of the pointer on the display screen based on time differences between a time when the ultrasound receiving unit receives the ultrasound signal at one of the at least three vertices at which the ultrasound receiving unit first receives the ultrasound signal, and times when the ultrasound receiving unit receives the ultrasound signal at remaining ones of the at least three vertices. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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12. A host apparatus, comprising:
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a rectangular display screen; an ultrasound receiving unit to receive an ultrasound signal and a light signal from a pointing apparatus, and to output electric signals; and a controlling unit to calculate a position of a pointer on the rectangular display screen corresponding to a position of the pointing apparatus based on an intersection of at least three spheres, the intersection of the least three spheres being determined using the electric signals from the ultrasound receiving unit, and to output a control signal to the rectangular display screen to move the pointer to the calculated position;
wherein the ultrasound receiving unit comprises ultrasound sensors at least three vertices of the rectangular display screen. - View Dependent Claims (13, 14, 15)
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16. A pointer control method, comprising:
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receiving an ultrasound signal from a pointing apparatus; determining a point on a display screen at which a pointer is to be positioned based on a time when the ultrasound signal is received; and displaying the pointer at the determined point on the display screen; wherein the receiving of an ultrasound signal from a pointing apparatus comprises receiving the ultrasound signal from at least three vertices of the display screen; and wherein the determining of a point on a display screen comprises determining the point on the display screen based on time differences between a time when the ultrasound signal is received at one of the at least three vertices at which the ultrasound signal is first received, and times when the ultrasound signal is received at remaining ones of the at least three vertices. - View Dependent Claims (17, 18)
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19. A pointer control method, comprising:
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receiving an ultrasound signal and a light signal from a pointing apparatus; determining a point on a display screen at which a pointer is to be positioned based on an intersection of at least three spheres, the intersection of the at least three spheres being determined based on times when the ultrasound signal and the light signal are received; and displaying the pointer at the determined point on the display screen; wherein the receiving of an ultrasound signal and a light signal from a pointing apparatus comprises receiving the ultrasound signal from the pointing apparatus at least three vertices of the display screen. - View Dependent Claims (20, 21)
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Specification