| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6f6fbe277fafda38f9c82a070425cfdb |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-123
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-56 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-0617
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-0863
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-361
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04N25-75
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-185 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03M1-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N5-378 |
| filingDate |
2013-06-10^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_158c20095ae806f436bef8e11fc97951 |
| publicationDate |
2014-12-17^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2515014-A |
| titleOfInvention |
Analog-to-digital conversion |
| abstract |
The drain voltage of transistor M3 is maintained constant by a feedback loop OP1, I2 so that charge is not injected into the ramp signal node by parasitic capacitor C2 when the comparator switches. The ramp signal may be commonly applied to many comparators in a CMOS imaging sensor. The technique prevents dependency of a pixel ADC output on the signal values of other pixels in the row. The bias currents I4 and I5 in the output stages may be set so that the current consumption is independent of the comparator state. The input capacitance of the comparator is independent of the state of the comparator, which is beneficial in successive-approximation, cyclic and pipeline ADCs (figures 10 to 12). |
| priorityDate |
2013-06-10^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |