DEMODULATING A SIGNAL FROM INTERMITTENTLY ILLUMINATED REGION
A system may intermittently illuminate a region, detect light from the intermittently illuminated region to form a detected signal, and process the detected signal with a demodulator. The demodulator may include a capacitor having an input to receive the detected signal, a resistor having an input c...
Saved in:
| Main Authors | , |
|---|---|
| Format | Patent |
| Language | English |
| Published |
20.08.2020
|
| Subjects | |
| Online Access | Get full text |
Cover
Loading…
| Abstract | A system may intermittently illuminate a region, detect light from the intermittently illuminated region to form a detected signal, and process the detected signal with a demodulator. The demodulator may include a capacitor having an input to receive the detected signal, a resistor having an input connected to an output of the capacitor at a connection point, and a switch that connects the connection point to ground during times when the region is not illuminated. An output of the resistor may produce an output signal that is a high-pass filtered version of the detected signal during times when the region is illuminated, and a time-invariant ground signal during times when the region is not illuminated. Such a demodulator may reduce the effects of low-frequency noise sources, such as background light, op-amp offsets related to input bias, photodiode 1/f noise and dark current. |
|---|---|
| AbstractList | A system may intermittently illuminate a region, detect light from the intermittently illuminated region to form a detected signal, and process the detected signal with a demodulator. The demodulator may include a capacitor having an input to receive the detected signal, a resistor having an input connected to an output of the capacitor at a connection point, and a switch that connects the connection point to ground during times when the region is not illuminated. An output of the resistor may produce an output signal that is a high-pass filtered version of the detected signal during times when the region is illuminated, and a time-invariant ground signal during times when the region is not illuminated. Such a demodulator may reduce the effects of low-frequency noise sources, such as background light, op-amp offsets related to input bias, photodiode 1/f noise and dark current. |
| Author | Pickett, Matthew D Seitz, Jason M |
| Author_xml | – fullname: Seitz, Jason M – fullname: Pickett, Matthew D |
| BookMark | eNrjYmDJy89L5WSwcXH19XcJ9XEM8fRzV3BUCPZ093P0UXAL8vdV8PQLcQ3y9QwJcfUL8YlU8PTxCfX19HMMcXVRCHJ19_T342FgTUvMKU7lhdLcDMpuriHOHrqpBfnxqcUFicmpeakl8aHBRgZAaGZgaW7gaGhMnCoA4AUshQ |
| ContentType | Patent |
| DBID | EVB |
| DatabaseName | esp@cenet |
| DatabaseTitleList | |
| Database_xml | – sequence: 1 dbid: EVB name: esp@cenet url: http://worldwide.espacenet.com/singleLineSearch?locale=en_EP sourceTypes: Open Access Repository |
| DeliveryMethod | fulltext_linktorsrc |
| Discipline | Medicine Chemistry Sciences |
| ExternalDocumentID | US2020260970A1 |
| GroupedDBID | EVB |
| ID | FETCH-epo_espacenet_US2020260970A13 |
| IEDL.DBID | EVB |
| IngestDate | Fri Jul 19 14:51:34 EDT 2024 |
| IsOpenAccess | true |
| IsPeerReviewed | false |
| IsScholarly | false |
| Language | English |
| LinkModel | DirectLink |
| MergedId | FETCHMERGED-epo_espacenet_US2020260970A13 |
| Notes | Application Number: US201516061509 |
| OpenAccessLink | https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200820&DB=EPODOC&CC=US&NR=2020260970A1 |
| ParticipantIDs | epo_espacenet_US2020260970A1 |
| PublicationCentury | 2000 |
| PublicationDate | 20200820 |
| PublicationDateYYYYMMDD | 2020-08-20 |
| PublicationDate_xml | – month: 08 year: 2020 text: 20200820 day: 20 |
| PublicationDecade | 2020 |
| PublicationYear | 2020 |
| RelatedCompanies | Intel Corporation |
| RelatedCompanies_xml | – name: Intel Corporation |
| Score | 3.2787113 |
| Snippet | A system may intermittently illuminate a region, detect light from the intermittently illuminated region to form a detected signal, and process the detected... |
| SourceID | epo |
| SourceType | Open Access Repository |
| SubjectTerms | DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE SURGERY |
| Title | DEMODULATING A SIGNAL FROM INTERMITTENTLY ILLUMINATED REGION |
| URI | https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200820&DB=EPODOC&locale=&CC=US&NR=2020260970A1 |
| hasFullText | 1 |
| inHoldings | 1 |
| isFullTextHit | |
| isPrint | |
| link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwfR1dS8Mw8BhT1Dedih9TAkrfimuXdi1YpOvXKms7tlbm01i6FATphqv4972GTfe0tyQHx-XgPnN3AXiknbxAS6PI9XgxmTKtKzOTGzKfq1yjC5NRVucho1gfZPR1qk0b8LnthRFzQn_EcESUqBzlvRL6evWfxHJFbeX6iX3g0fLFTy1X2kTHqrBoktu3vFHiJo7kOFY2keKxgKHrbvY6NsZKB-hI9-oCMO-tX_elrHaNin8KhyPEV1Zn0OBlC46d7d9rLTiKNk_euNxI3_ocnpFpiZsN7TSMA2KTSRjE9pD44yQiYrQt6qHUi9PhO8EYPYvC2Ea9RMZegArzAh58L3UGMpIx-7v1LJvs0ty9hGa5LPkVkK5uMmWu67lqLmjBDJMruaIZhaYWCtVy4xra-zDd7Affwkm9rdOmaqcNzerrm9-h3a3YvWDXLzWQgA0 |
| link.rule.ids | 230,309,783,888,25578,76884 |
| linkProvider | European Patent Office |
| linkToHtml | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwfV3dS8MwED_GFOebTsWPqQGlb8W1a2sLDun6sVXbdGytzKexdCkI0g1X8d_3Gjbd095CDo7LwX0m9wvAvdbOcow0ilzBi8ka0zsys7gp85nKdW1uMY1VfciIGoNUe5nokxp8bmZhBE7ojwBHRIvK0N5L4a-X_00sV7ytXD2wD9xaPPtJ15XW1bEqIprk9rreMHZjR3KcbjqW6EjQMHW3Hts21kp7mGSbFdK-99ar5lKW20HFP4L9IfIrymOo8aIJDWfz91oTDqL1lTcu19a3OoEnVFrspqGdBLRPbDIO-tQOiT-KIyKgbdEPJR5NwneCNXoaBdRGv0RGXh8d5inc-V7iDGQUY_p36mk63pa5cwb1YlHwcyAdw2LKzDAy1ZprOTMtrmSKbua6miuanpkX0NrF6XI3-RYagyQKp2FAX6_gsCJVLVS13YJ6-fXNrzEGl-xGqO4XXw6C_Q |
| openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.title=DEMODULATING+A+SIGNAL+FROM+INTERMITTENTLY+ILLUMINATED+REGION&rft.inventor=Seitz%2C+Jason+M&rft.inventor=Pickett%2C+Matthew+D&rft.date=2020-08-20&rft.externalDBID=A1&rft.externalDocID=US2020260970A1 |