http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005319294-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5547f741b25666fc4ae5195cf71a979b |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-117 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06T1-00 |
| filingDate | 2005-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0ff9e8c6e9d344493c284858011541bc |
| publicationDate | 2005-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2005319294-A |
| titleOfInvention | Fingerprint input device |
| abstract | PROBLEM TO BE SOLVED: To provide a fingerprint input device capable of obtaining a fingerprint image having sufficient contrast. A two-dimensional image sensor for imaging a fingerprint image from a fingerprint measurement unit having a fingerprint ridge line part and a fingerprint valley part of a finger to be measured, and placed on the imaging surface of the two-dimensional image sensor, A transparent solid film on which the fingerprint measurement unit is mounted when the two-dimensional image sensor captures the fingerprint image, and images a fingerprint ridge line portion of the fingerprint measurement unit as a bright portion, and measures the fingerprint In a fingerprint input device that captures an image of a fingerprint valley portion as a dark portion through an air layer, the contrast C 0 defined when the thickness of the transparent solid film is assumed to be infinitely close to zero is the size is such that the refractive index n 3 of the transparent solid film to be a value more for obtaining a signal to noise ratio for the fingerprint recognition when given meet. [Selection] Figure 7 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009131042-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009003492-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11675112-B2 |
| priorityDate | 2005-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.