Operation system, pointing device for 3-dimensional operations, and operation method

A pointing device for 3-dimensional operations used for operating a pointer on a display screen, comprising:

• a receiving section configured to receive radio waves of a millimeter band;
• a measuring section configured to measure an amplitude of the radio waves received by the receiving section;
• an information generating section configured to generate information for executing an operation of the pointer on the display screen in a depth direction in accordance with a change of the amplitude of the radio waves measured by the measuring section;
• and
• a transmitting section configured to transmit an information signal containing information generated by the information generating section.

A method of operating a pointer on a display screen, comprising:

• transmitting radio waves of a millimeter band;
• receiving the transmitted radio waves at a second position different from a first position at which the radio waves of the millimeter band are transmitted, a distance between the first position and the second position being changeable;
• measuring an amplitude of the received radio waves;
• and
• executing an operation of the pointer on the display screen in a depth direction in accordance with a change of the measured amplitude of the radio waves.