IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0478845
(2006-07-03)
|
등록번호 |
US-7821410
(2010-11-15)
|
우선권정보 |
JP-P2005-195122(2005-07-04); JP-P2006-162553(2006-06-12) |
발명자
/ 주소 |
- Higashionji, Masaru
- Hasegawa, Kenji
- Odagiri, Masaru
- Shimotashiro, Masafumi
- Seki, Hiroshi
|
출원인 / 주소 |
|
대리인 / 주소 |
McDermott Will & Emery LLP
|
인용정보 |
피인용 횟수 :
9 인용 특허 :
3 |
초록
▼
A radio-type transmitting device capable of transmitting information other than information in an internal memory is provided. A RFID tag includes a encoding circuit for digitalizing receiving sensitivity of a radio wave sent from an external transmitting/receiving apparatus and then sending the dig
A radio-type transmitting device capable of transmitting information other than information in an internal memory is provided. A RFID tag includes a encoding circuit for digitalizing receiving sensitivity of a radio wave sent from an external transmitting/receiving apparatus and then sending the digitalized receiving sensitivity to the external transmitting/receiving apparatus. Thus, the external transmitting/receiving apparatus can obtain a distance between the external transmitting/receiving apparatus and the RFID tag based on received sensitivity information.
대표청구항
▼
What is claimed is: 1. A radio-type transmitting device comprising: a power supply voltage generating unit configured to receive a radio wave sent from an external transmitting/receiving apparatus and generate an internal power supply voltage; a transmission unit configured to transmit information
What is claimed is: 1. A radio-type transmitting device comprising: a power supply voltage generating unit configured to receive a radio wave sent from an external transmitting/receiving apparatus and generate an internal power supply voltage; a transmission unit configured to transmit information to the external transmitting/receiving apparatus; an encoding circuit connected to the power supply voltage generating unit and configured to encode receiving sensitivity of the radio wave; and a controller configured to transmit encoded receiving sensitivity information which is encoded by the encoding circuit from the transmission unit to the external transmitting/receiving apparatus. 2. The radio-type transmitting device according to claim 1, wherein the controller includes a conversion unit configured to transmit converted information from the transmission unit to the external transmitting/receiving apparatus instead of the receiving sensitivity information, the converted information being information which is different from the receiving sensitivity information, corresponds to the receiving sensitivity information and to which the receiving sensitivity information is converted. 3. The radio-type transmitting device according to claim 2, wherein the converted information is distance information between the external transmitting/receiving apparatus and the radio-type transmitting device, and the conversion unit includes a storage unit configured to store the receiving sensitivity information and the distance information in association with each other, and is configured to transmit the distance information read from the storage unit from the transmission unit. 4. The radio-type transmitting device according to claim 1, wherein the receiving sensitivity information is a receiving voltage of the received radio wave, and the encoding circuit is an A/D conversion circuit. 5. The radio-type transmitting device according to claim 1, wherein the transmission unit is an antenna and is connected to the controller and the antenna; and has a load modulation unit configured to modulate an impedance of the antenna in accordance with the receiving sensitivity information by control of the controller. 6. A container comprising: an outer container configured to contain contents which vary in quantity; and a radio-type transmitting device attached to the outer container, and comprising: a power supply voltage generating unit configured to receive a radio wave sent from an external transmitting/receiving apparatus and generate an internal power supply voltage; a transmission unit configured to transmit information to the external transmitting/receiving apparatus; an encoding circuit connected to the power supply voltage generating unit and configured to encode receiving sensitivity of the radio wave; and a controller configured to transmit encoded receiving sensitivity information which is encoded by the encoding circuit from the transmission unit to the external transmitting/receiving apparatus. 7. The container according to claim 6, wherein the contents is liquid, and the radio-type transmitting device includes a base member with which the radio-type transmitting device floats on a surface of the liquid and is arranged in the outer container. 8. The container according to claim 6, wherein the outer container is made of a flexible material so that a shape of the outer container is varied in accordance with an amount of the contents, and the radio-type transmitting device is mounted on a surface of the outer container. 9. The container according to claim 6, further comprising a partition member that is provided in the outer container and is movable in the outer container in accordance with the amount of the contents, wherein the radio-type transmitting device is mounted on the partition member. 10. A transmitting/receiving system comprising: a radio-type transmitting device; and an external transmitting/receiving apparatus exchanging information wirelessly with the radio-type transmitting device, the radio-type transmitting device comprising: a power supply voltage generating unit configured to receive a radio wave sent from the external transmitting/receiving apparatus and generate an internal power supply voltage; a transmission unit configured to transmit information to the external transmitting/receiving apparatus; an encoding circuit connected to the power supply voltage generating unit and configured to encode receiving sensitivity of the radio wave; and a controller configured to transmit encoded receiving sensitivity information which is encoded by the encoding circuit from the transmission unit to the external transmitting/receiving apparatus. 11. The transmitting/receiving system according to claim 10, wherein the external transmitting/receiving apparatus includes a transmitting/receiving unit configured to transmit a radio wave to the radio-type transmitting device and receive the receiving sensitivity information transmitted from the transmission unit of the radio-type transmitting device or distance information between the external transmitting/receiving apparatus and the radio-type transmitting device. 12. The transmitting/receiving system according to claim 11, wherein, in a case that the radio-type transmitting device transmits the receiving sensitivity information, the external transmitting/receiving apparatus further includes a distance determination unit configured to be connected to the transmitting/receiving unit and obtain the distance information between the external transmitting/receiving apparatus and the radio-type transmitting device in accordance with the receiving sensitivity information. 13. The transmitting/receiving system according to claim 12, wherein the distance determination unit includes a transmitting device storage unit configured to store the receiving sensitivity information and the distance information in association with each other; and a reading unit configured to read the distance information corresponding to the receiving sensitivity information received at the transmitting/receiving unit. 14. The transmitting/receiving system according to claim 10, further comprising a container configured to contain contents that vary in quantity and in which the radio-type transmitting device is disposed. 15. The transmitting/receiving system according to claim 14, wherein the contents is liquid, and the radio-type transmitting device includes a base member with which the radio-type transmitting device floats on a surface of the liquid and is arranged in the container. 16. The transmitting/receiving system according to claim 14, wherein the container is made of a flexible material so that an outer shape of the container is varied in accordance with variation of the amount of the contents, and the radio-type transmitting device is mounted on a surface of the container. 17. The transmitting/receiving system according to claim 14, wherein the radio-type transmitting device is mounted on a partition member which is provided in the container and is movable in the container in accordance with variation of the amount of the contents. 18. The transmitting/receiving system according to claim 14, wherein the contents are methanol solution for a fuel cell, and the container is a fuel tank capable of connecting to a direct methanol fuel cell system. 19. The transmitting/receiving system according to claim 14, wherein the contents are infusion and the container is an infusion container containing the infusion therein. 20. The transmitting/receiving system according to claim 14, wherein the contents are printing papers, and the container is a sheet tray containing the printing papers, the sheet tray has a paper feeding mechanism configured to load the printing papers, to be movable within the sheet tray in accordance with variation of the amount of the printing papers, and to attach the radio-type transmitting device. 21. The transmitting/receiving system according to claim 14, wherein the contents are ink, and the container is an ink cartridge containing the ink therein. 22. The transmitting/receiving system according to claim 14, wherein the radio-type transmitting device includes an information storage unit configured to store management information which is information relating to at least one of the contents and the container and is transmitted from the transmission unit of the radio-type transmitting device to the external transmitting/receiving apparatus. 23. The transmitting/receiving system according to claim 22, wherein the management information relating to the contents shows a kind of the contents, and the management information relating to the container shows at least one of a manufacturing date and a use history of the container. 24. The transmitting/receiving system according to claim 19, wherein the radio-type transmitting device includes an information storage unit configured to store management information which is information relating to at least one of the contents and the container and is transmitted from the transmission unit of the radio-type transmitting device to the external transmitting/receiving apparatus; the management information relating to the contents shows a kind of the contents, and the management information relating to the container shows at least one of a manufacturing date and a use history of the container; and the external transmitting/receiving apparatus has a display unit for displaying the management information. 25. A transmitting/receiving method comprising: receiving a radio wave transmitted from an external transmitting/receiving apparatus at a radio-type transmitting device to generate an internal power supply voltage; transmitting information from the radio-type transmitting device to the external transmitting/receiving apparatus; after generating the internal power supply voltage before transmitting information, encoding receiving sensitivity of the radio wave; and transmitting an encoded receiving sensitivity information to the external transmitting/receiving apparatus. 26. The transmitting/receiving method according to claim 25, wherein the receiving sensitivity information is a receiving voltage of the received radio wave, and the method further comprising: obtaining distance information between the external transmitting/receiving apparatus and the radio-type transmitting device in accordance with the receiving sensitivity information; and transmitting the distance information to the external transmitting/receiving apparatus instead of the receiving sensitivity information. 27. The transmitting/receiving method according to claim 26, wherein the radio-type transmitting device is disposed in the container containing contents which vary in quantity, and the distance information corresponds to the amount of the contents in the container. 28. The transmitting/receiving method according to claim 27, wherein the container is a fuel tank that is provided for a direct methanol fuel cell system and contains a methanol solution, and the distance information shows a remaining amount of the methanol solution in the container. 29. The transmitting/receiving method according to claim 25, wherein the radio wave transmitted from the radio-type transmitting device to the external transmitting/receiving apparatus is modulated in accordance with the receiving sensitivity information and then transmitted.
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