| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_121afc2348295e480c7e47c96250b6af |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06F7-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06F7-588 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06F7-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06F1-02 |
| filingDate |
2006-08-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2010-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af397eca883ef3b951e39e041aa6e5ba |
| publicationDate |
2010-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7752247-B2 |
| titleOfInvention |
Random number generator and generation method |
| abstract |
An RNG circuit is connected to the parallel port of a computer. The circuit includes a flat source of white noise and a CMOS amplifier circuit compensated in the high frequency range. A low-frequency cut-off is selected to maintain high band-width yet eliminate the 1/f amplifier noise tail. A CMOS comparator with a 10 nanosecond rise time converts the analog signal to a binary one. A shift register converts the serial signal to a 4-bit parallel one at a sample rate selected at the knee of the serial dependence curve. Two levels of XOR defect correction produce a BRS at 20 kHZ, which is converted to a 4-bit parallel word, latched and buffered. The entire circuit is powered from the data pins of the parallel port. A device driver interface in the computer operates the RNG. The randomness defects with various levels of correction and sample rates are calculated and the RNG is optimized before manufacture. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-RE46652-E
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10057250-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8788551-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10114614-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9454653-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10594687-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10326757-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9201630-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10917403-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10516663-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10116651-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9985615-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11327719-B2 |
| priorityDate |
1995-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |