Radio communication system, device and method
Abstract
Disclosed is a radio communication system for performing data communication by a backscatter system using absorption and reflection of a received radio wave, wherein a data reading device transmits an unmodulated carrier of frequency fO; a data transmitting device subjects transmission data to primary modulation with a center frequency fS, and subjects a signal resulting from the primary modulation (12) to secondary modulation (13) by multiplying the signal resulting from the primary modulation by an input of the unmodulated carrier of the backscatter system so as to generate a reflected modulated wave in which one of frequencies fO + fS and fO - fS is suppressed; and the data reading device receives a reflected wave signal in which one of the frequencies fO + fS and fO - fS is suppressed from the data transmitting device.

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Projected expiry passed 9 May 2025, 1.4 years ago.
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1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0779520A2 | Cites | European Patent Office (EPO) | XY | Search report | 1,2,5-8,11-14,17,18 |
| EP0851639A2 | Cites | European Patent Office (EPO) | DX | Search report | 1,2,6-8,12-14,18 |
| US2002142747A1 | Cites | United States of America | Y | Search report | 3,4,9,10,15,16 |
| US5861781A | Cites | United States of America | Y | Search report | 3,4,9,10,15,16 |
13 members in 6 offices
Priority claims5
| Document | Office | Kind | Date |
|---|---|---|---|
| 2004140580 | Japan | A | |
| 2004140580 | Japan | A | |
| 2004140580 | Japan | – | |
| 2004140580 | – | – | – |
| JP20040140580 | – | – | – |
Members13
| Document | Office | Kind | |
|---|---|---|---|
| CN1697435A | China | A | |
| EP1596320A2 | European Patent Office (EPO) | A2 | |
| JP2005323223A | Japan | A | |
| US2005253688A1 | United States of America | A1 | |
| TW200610288A | Taiwan Province of China | A | |
| KR20060047502A | Republic of Korea | A | |
| TWI261979B | Taiwan Province of China | B | |
| JP4020096B2 | Japan | B2 | |
| EP1596320A3This record | European Patent Office (EPO) | A3 | |
| CN100539563C | China | C | |
| US7796016B2 | United States of America | B2 | |
| KR101114066B1 | Republic of Korea | B1 | |
| EP1596320B1 | European Patent Office (EPO) | B1 |
36 legal events, as 4 offices reported them to INPADOC
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|---|---|---|---|
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Notification of lapseLapsedST | ST | FR | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal feeWithdrawnR119 | R119 | DE | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
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| Designated contracting statesAK | AK | EP | |
| European patent grantedGrantedFG4D | FG4D | GB | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
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Numbers
- Publication
- 1596320
- Publication, DOCDB
- 1596320
- Publication, EPODOC
- EP1596320
- Application
- 5252825
- Application, DOCDB
- 05252825
- Application, EPODOC
- EP20050252825
Titles3
- German
- Funkkommunikationssystem, -vorrichtung und -verfahren
- English
- Radio communication system, device and method
- French
- Système, dispositif et procédé de radiocommunication
Classification
- CPC, 7
- G06K7/0008
- H04L27/34
- G01S13/758
- G06K19/0723
- H04L5/143
- G06K7/00
- H04B5/48
- IPC, 11
- G06K7 00
- G06K19 07
- G01S13 75
- H04L27 00
- H04B1 00
- G08C17 02
- H03D1 00
- G06K17 00
- H04B1 59
- H04B5 02
- H04L5 14
Designated states2
- Contracting states, 1
- Türkiye
- Extension states, 1
- Yugoslavia, later Serbia and Montenegro (until 2006)