INFORMATION TERMINAL DEVICE AND PORTABLE INFORMATION TERMINAL

摘要

PROBLEM TO BE SOLVED: To provide an information terminal device capable of improving communication quality by correcting a displacement of an antenna position.SOLUTION: An information terminal device for performing wireless communication with a portable information terminal comprising detection means for detecting a tilt of an antenna comprises: antenna tilt inquiry means for transmitting an antenna tilt inquiry to the portable information terminal, and receiving information which is transmitted by the portable information terminal in response to the inquiry and shows the tilt of the antenna detected by the detection means; and antenna tilt calculation means for calculating a tilt between the antenna of the portable information terminal and an antenna included in the information terminal device on the basis of the received information showing the tilt of the antenna of the portable information terminal, and obtaining the necessity of antenna tilt correction and a correction amount to be corrected from the calculation. When the antenna tilt correction is necessary, the information terminal device performs the antenna tilt correction by controlling a direction of the antenna included in the information terminal device on the basis of the correction amount.