Yoshinori Isoda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A wireless tag determination system includes a detection information storage configured to store information detected from a wireless tag by a tag reader, as detection information. A determination requesting unit is configured to request a determination for reliability of existence of the wireless tag within a detection range of the tag reader. A reliability determination unit is configured to determine the reliability by use of the detection information, in response to the request.
Abstract: An area estimation system includes: a radio signal transmitting unit configured to transmit a radio signal to certain radio signal receiving terminal; a radio signal capturing unit configured to capture the radio signal transmitted from the radio signal transmitting unit, to obtain an RSSI for indicating a strength of the captured radio signal; an RSSI receiver unit configured to receive the RSSI, a radio signal transmitting unit ID for uniquely identifying the radio signal transmitting unit, and a radio signal capturing unit ID for uniquely identifying the radio signal capturing unit; an RSSI storage unit configured to store the RSSI, the radio signal transmitting unit ID and the radio signal capturing unit ID in association with one another; and a presence area estimating unit configured to estimate the presence area of the radio signal transmitting unit, by using the RSSI which is obtained by the radio signal capturing unit and stored in the RSSI storage unit.
Abstract: The following operation is carried out in order to enable a signal to a portable terminal of a destination to be relayed by another portable terminal so as to successfully reach the portable terminal of the destination. A base station 21 makes and transmits a relayable signal to a portable terminal 12, based on a received signal. Suppose another portable terminal 11 received this relayable signal. The portable terminal 11 further transmits the relayable signal, because the relayable signal is not one addressed to itself. The portable terminal 12 outside service areas 31-33 receives the relayable signal transmitted by the portable terminal 11. A service area for transmission of the relayable signal can be determined based on information about the portable terminal or other information. It is possible to change the number of relays of the relayable signal and a storage time thereof in the portable terminal.
April 7, 2003
February 5, 2004
Ken Ohta, Yoshinori Isoda, Tomohiro Nakagawa, Toshiaki Sugimura