Patent ID: 7620422
Filing Date: 2009-11-17
Classification: H01Q,H04W

Abstract:
1. A wireless transmission system for transmitting a first data between a transmitter and a receiver by using a wireless communication, wherein the receiver is equipped with a first directional antenna for receiving the first data wirelessly and a first non-directional antenna, the transmitter is equipped with a second directional antenna for transmitting the first data wirelessly, a second non-directional antenna, and an intensity control portion for controlling an intensity of a signal radiated from the second directional antenna to be a minimum intensity that can transmit the first data by using the second directional antenna, the receiver and the transmitter perform a communication of a second data indicating a reception status of the first data in the receiver via the first non-directional antenna and the second non-directional antenna, and the intensity control portion controls the intensity based on the second data so that the intensity becomes the minimum intensity.