Position information detection system and position information detection method

A position information detection system comprising:

• a first semiconductor device;
• a second semiconductor device;
• and
• a wireless communication device which transmits and receives data by transmission and reception of a radio signal to/from the first semiconductor device and the second semiconductor device,
• wherein the first semiconductor device has a function to detect a first signal intensity of a radio signal transmitted from the wireless communication device and a function to transmit data on the first signal intensity to the wireless communication device;
• wherein the second semiconductor device has a function to detect a second signal intensity of a radio signal transmitted from the wireless communication device and a function to transmit data on the second signal intensity to the wireless communication device;
• and
• wherein the wireless communication device has a function to calculate a first calculated distance from the first signal intensity, a function to calculate a second calculated distance from the second signal intensity, and a function to calculate a position of the second semiconductor device from the first calculated distance, the second calculated distance, a position of the first semiconductor device, and a position of the wireless communication device.

A position information detection system comprising:

• a first semiconductor device;
• a second semiconductor device;
• and
• a wireless communication device which transmits and receives data by transmission and reception of a radio signal to/from the first semiconductor device and the second semiconductor device,
• wherein the wireless communication device has a function to detect a first signal intensity of a radio signal transmitted from the first semiconductor device, a function to calculate a first calculated distance from the first signal intensity, a function to detect a second signal intensity of a radio signal transmitted from the second semiconductor device, a function to calculate a second calculated distance from the second signal intensity, and a function to calculate a position of the second semiconductor device from the first calculated distance, the second calculated distance, a position of the first semiconductor device, and a position of the wireless communication device.

A position information detection method comprising:

• transmitting a first radio signal from a wireless communication device to a first semiconductor device, and transmitting a second radio signal from the wireless communication device to a second semiconductor device;
• receiving the first radio signal and detecting a first signal intensity of the first radio signal in the first semiconductor device, and receiving the second radio signal and detecting a second signal intensity of the second radio signal in the second semiconductor device;
• calculating a first calculated distance from the first signal intensity in the first semiconductor device, and calculating a second calculated distance from the second signal intensity in the second semiconductor device;
• transmitting data on the first calculated distance from the first semiconductor device to the wireless communication device, and transmitting data on the second calculated distance from the second semiconductor device to the wireless communication device;
• receiving data on the first signal intensity, comparing the first calculated distance with a position of the first semiconductor device, and determining a correction method of a calculated distance based on a comparison of the first calculated distance with a position of the first semiconductor device, in the wireless communication device;
• and
• receiving data on the second calculated distance and calculating a position of the second semiconductor device from the second calculated distance and a position of the wireless communication device, based on the correction method, in the wireless communication device.

A position information detection method comprising:

• transmitting a first radio signal from a wireless communication device to a first semiconductor device, and transmitting a second radio signal from the wireless communication device to a second semiconductor device;
• receiving the first radio signal and detecting a first signal intensity of the first radio signal in the first semiconductor device, and receiving the second radio signal and detecting a second signal intensity of the second radio signal in the second semiconductor device;
• transmitting data on the first signal intensity from the first semiconductor device to the wireless communication device, and transmitting data on the second signal intensity from the second semiconductor device to the wireless communication device;
• receiving data on the first signal intensity, calculating a first calculated distance from the first signal intensity, comparing the first calculated distance with a position of the first semiconductor device, and determining a correction method of a calculated distance based on a comparison of the first calculated distance with a position of the first semiconductor device, in the wireless communication device;
• and
• receiving data on the second signal intensity, calculating a second calculated distance from the second signal intensity and calculating a position of the second semiconductor device from the second calculated distance and a position of the wireless communication device, based on the correction method, in the wireless communication device.

A position information detection method comprising:

• transmitting a first radio signal from a first semiconductor device to a wireless communication device, and transmitting a second radio signal from a second semiconductor device to the wireless communication device;
• receiving the first radio signal and detecting a first signal intensity of the first radio signal, and receiving the second radio signal and detecting a second signal intensity of the second radio signal, in the wireless communication device;
• calculating a first calculated distance from the first signal intensity, comparing the first calculated distance with a position of the first semiconductor device, and determining a correction method of a calculated distance based on a comparison of the first calculated distance with a position of the first semiconductor device, in the wireless communication device;
• and
• calculating a second calculated distance from the second signal intensity, and calculating a position of the second semiconductor device from the second calculated distance and a position of the wireless communication device, based on the correction method, in the wireless communication device.