http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2374992-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_aa167897a816e0e598235c706de2c370 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03L1-028 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03L1-04 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03L1-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03L1-04 |
| filingDate | 2002-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_30b7d12cb0a544bd485850a46ad6970d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_393773c8e2239f4f6d4a6cc9acafa8ee |
| publicationDate | 2002-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2374992-A |
| titleOfInvention | A self-compensating clock generator using a dual-mode crystal oscillator in an oven |
| abstract | A dual-mode crystal oscillator provides a relatively temperature-insensitive output frequency signal Fc and a temperature sensitive output frequency signal Fb. The signal Fb is used to correct the output signal Fc to provide a highly accurate clock 44 which may for example be used in MWD (measurement while drilling) telemetry or data recording. A circuit responsive to Fb turns on a heater 48 when the temperature falls below the working range of the correction system. The heater may be used to sweep the oven temperature through its working range during a calibration episode based on an external GPS clock reference signal. |
| priorityDate | 2001-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 19.