Nippondenso Co., Ltd.

Tatsuya Hirata

Atsushi Watanabe

Yoshiyuki Kago

Naoki Tokitsu

A system for computer-managing information of baggage to be loaded in an aircraft. The system comprises a response circuit attached to the baggage and a reader disposed at a classification point of the baggage. The response circuit operates to input and store baggage information indicative of at least a flight name of the aircraft and the owner of the baggage and in response to a question electromagnetic wave, outputs a response electromagnetic wave containing the baggage information. The reader transmits the question electromagnetic wave to the response circuit means and receive the response electromagnetic wave from the response circuit, thereby reading out the baggage information so that the baggage can be classified in accordance with the read baggage information. Also included is a computer for inputting and storing the baggage information read by the reader and for inputting and storing information representative of the owner of the baggage, the computer performing a verification between the baggage owner and the baggage on the basis of the inputted baggage information and the inputted owner information.

Aircraft baggage managing system utilizing a response circuit provided

An antenna system, comprising an antenna for transmitting a radio wave of a frequency, and a radio wave absorber intercepting and absorbing part of the radio wave to reduce the gain of the antenna. Thereby, the antenna system narrows down the communication area of the radio wave independently of the frequency. The antenna system is applicable to a movable object discriminator using a radio wave.

Antenna system with a limitable communication area

A system for computer-managing information of baggage to be loaded in an aircraft. The system comprises a response circuit attached to the baggage and a reader disposed at a classification point of the baggage. The response circuit operates to input and store baggage information indicative of at least a flight name of the aircraft and the owner of the baggage, and in response to a question electromagnetic wave, outputs a response electromagnetic wave containing the baggage information. The reader transmits the question electromagnetic wave to the response circuit means and to receive the response electromagnetic wave from the response circuit, thereby reading out the baggage information so that the baggage can be classified in accordance with the read baggage information. Also included is a computer for inputting and storing the baggage information read by the reader and for inputting and storing information representative of the owner of the baggage, the computer performing a verification between the baggage owner and the baggage on the basis of the inputted baggage information and the inputted owner information.

A movable-object identification system includes an interrogator for transmitting an interrogation signal, and a responder mounted on a movable object for transmitting a reply signal in response to the interrogation signal. The reply signal contains identification information. The responder includes an antenna for receiving the interrogation signal from the interrogator and for radiating the reply signal; and an input device connected to the antenna for receiving an electric power of the interrogation signal received by the antenna. The input device includes a receiving element for dividing the received electric power into a first separation electric power and a second separation electric power corresponding to a traveling and reflected wave of the interrogation signal, respectively. The receiving element has an impedance. The responder further includes a generating device for generating predetermined identification information using the first separation electric power; and a modulating device, connected in parallel with the input device and connected to the antenna, for varying the impedance of the receiving element in accordance with the generated identification information, for modulating the second separation electric power of the interrogation signal in accordance with the identification information to generate the reply signal, and for feeding the reply signal to the antenna.

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Ichinomiya, Japan

Tatsuya Hirata