Noise reduction apparatus and audio output apparatus
Abstract
The FM broadcast is received and the FM demodulated composite signal is stereo demodulated. When the high band components of the demodulated signal are low, the correction is conducted by interpolating the signals just before and just after the noise generation period, and when the high band components are large, the interpolation is conducted by using a central value calculated from the value of a predetermined period before the noise generation period, and a central value calculated from the value of a predetermined period after the noise generation period.

Term
Term ended
Projected expiry passed 14 July 2020, 6.2 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both waysCites: the store holds 2 of 3
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0629054A2 | Cites | European Patent Office (EPO) | X | Search report | 7,11 |
| US4574390A | Cites | United States of America | XA | Search report | 7,10,12 |
9 members in 4 offices
Priority claims8
| Document | Office | Kind | Date |
|---|---|---|---|
| 20124599 | Japan | A | |
| 20124599 | Japan | – | |
| 20124699 | Japan | A | |
| 20124699 | Japan | – | |
| 20124599 | – | – | – |
| 20124699 | – | – | – |
| JP19990201245 | – | – | – |
| JP19990201246 | – | – | – |
Members9
| Document | Office | Kind | |
|---|---|---|---|
| EP1069693A2 | European Patent Office (EPO) | A2 | |
| JP2001036419A | Japan | A | |
| JP2001036420A | Japan | A | |
| EP1069693A3This record | European Patent Office (EPO) | A3 | |
| EP1069693B1 | European Patent Office (EPO) | B1 | |
| DE60014790D1 | Germany | D1 | |
| JP3627577B2 | Japan | B2 | |
| DE60014790T2 | Germany | T2 | |
| US7551743B1 | United States of America | B1 |
34 legal events, as 4 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| 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 | |
| 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| Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal feeWithdrawnR119 | R119 | DE | |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 | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Declaration of willingness to licenceR084 | R084 | DE | |
| Declaration of willingness to licenceR084 | R084 | DE | |
| Register noted 'licences of right' (sect. 46/1977)746 | 746 | GB | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Corresponds to:REF | REF | EP | |
| European patents granted designating irelandGrantedFG4D | FG4D | IE | |
| Designated contracting statesAK | AK | EP | |
| European patent grantedGrantedFG4D | FG4D | GB | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS | GRAS | EP | |
| Title (correction)NOISE REDUCTION APPARATUSRTI1 | RTI1 | EP | |
| Title (correction)NOISE REDUCTION APPARATUSRTI1 | RTI1 | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP | GRAP | EP | |
| Designation fees paidAKX | AKX | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAX | AX | EP | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | EP | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | EP | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Request for extension of the european patentAL;LT;LV;MK;RO;SIAX | AX | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 1069693
- Publication, DOCDB
- 1069693
- Publication, EPODOC
- EP1069693
- Application
- 305982
- Application, DOCDB
- 00305982
- Application, EPODOC
- EP20000305982
Titles3
- German
- Vorrichtung zum Reduzieren von Rauschen und Audioausgangsvorrichtung
- English
- Noise reduction apparatus and audio output apparatus
- French
- Dispositif de réduction de bruit et dispositif de sortie audio
Classification
- CPC, 2
- G11B20/24
- H04B1/1661
- IPC, 2
- G11B20 24
- H04B1 16
Designated states25
- Contracting states, 19
- Austria
- Belgium
- Switzerland
- Cyprus
- Germany
- Denmark
- Spain
- Finland
- France
- United Kingdom
- Greece
- Ireland
- Italy
- Liechtenstein
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Portugal
- Sweden
- Extension states, 6
- Albania
- Lithuania
- Latvia
- North Macedonia
- Romania
- Slovenia