Pointer control method, pointing apparatus, and host apparatus therefor
First Claim
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1. A pointing apparatus, comprising:
- a user input unit receiving a user command; and
an ultrasound transmitting unit receiving the user command to transmit an ultrasound signal, generating the ultrasound signal, and transmitting the ultrasound signal continuously or exclusively when a command is given to transmit the ultrasound signal to a host apparatus.
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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
22 Claims
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1. A pointing apparatus, comprising:
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a user input unit receiving a user command; and
an ultrasound transmitting unit receiving the user command to transmit an ultrasound signal, generating the ultrasound signal, and transmitting the ultrasound signal continuously or exclusively when a command is given to transmit the ultrasound signal to a host apparatus. - View Dependent Claims (2, 3)
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4. A host apparatus, comprising:
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a display screen;
an ultrasound receiving unit receiving an ultrasound signal from a pointing apparatus and outputting an electric signal; and
a controlling unit calculating a position of a pointer on the display screen corresponding to a position of the pointing apparatus based on the electric signal from the ultrasound receiving unit, and outputting a control signal to the display screen to position the pointer at the calculated position of the display screen. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A pointing apparatus, comprising:
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a user input unit receiving a user command; and
an ultrasound transmitting unit comprising an optical generator generating a light signal and sending the light signal to a host apparatus, and an ultrasound generator generating an ultrasound signal and sending the ultrasound signal to the host apparatus when receiving a command to transmit the ultrasound signal via the user input unit. - View Dependent Claims (11, 12)
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13. A host apparatus, comprising:
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a display screen;
an ultrasound receiving unit receiving an ultrasound signal and a light signal from a pointing apparatus and outputting electric signals; and
a controlling unit calculating a position of a pointer on the display screen corresponding to a position of the pointing apparatus based on the electric signals from the ultrasound receiving unit, and outputting a control signal to the display screen to move the pointer to the calculated point. - View Dependent Claims (14, 15, 16)
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17. A pointer control method, comprising:
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receiving an ultrasound signal from a pointing apparatus;
determining a first point on a display screen on which a pointer is to be positioned using a time when the ultrasound signal is received; and
displaying the pointer at the determined point. - View Dependent Claims (18, 19)
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20. 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 on which a pointer is to be positioned, using times when the ultrasound signal and the light signal are received; and
displaying the pointer at the determined point. - View Dependent Claims (21, 22)
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Specification