| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b94d2715cda37c1f23e48f9f4f23422 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R13-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R23-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R23-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R13-14 |
| filingDate |
1968-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1975-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9171d0acd6f0833f0050b08ff67277d8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_002691a3718984059a4fd214b2eb6e7e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ade7f43eb3da25905dc09670f6869a62 |
| publicationDate |
1975-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3883803-A |
| titleOfInvention |
Non-coherent multi-channel optical spectrum analyzer |
| abstract |
A system for simultaneously analyzing the frequency content of a plurality of complex input signals. The input signals are converted to optical signals and recorded on photographic film. Each input signal is assigned a discrete track on the continuous film. Each track appears as a density modulated series of bands across the track. The optical representation of the signal as it appears on the track is analyzed by superimposing on the track a pattern representative of the frequency band of interest. When the superimposed image corresponds to the frequency of the track, light projected through the film is modulated and is picked up by photo-detectors which transform the modulated optical signals to electrical signals for recording or viewing on a cathode-ray tube. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4191957-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4139897-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4742577-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4887086-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5965819-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4467276-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3120416-A1 |
| priorityDate |
1968-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |