| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7a7b6e260fcceab61b9837a39b696fc2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-745 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M1-1023 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03M1-74 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G09G3-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03M1-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G09G3-36 |
| filingDate |
1996-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5bb4019efb431ff84e765e1c8b153496 |
| publicationDate |
1997-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0780986-A2 |
| titleOfInvention |
Auto calibrated digital to analog converter for a video display |
| abstract |
Each of N current summation type digital-to-analog (D/A) converters (23) of a liquid crystal display driver generates an analog signal (OUT) which provides pixel video information. In an error sampling interval of the D/A converter, the output signal of the D/A converter developed when the data to be converted is at full scale is compared in a comparator (131) with a reference voltage (VREF). An error signal (ERROR) is sampled and is used for varying a control voltage (VCP2) developed in a capacitor. The control voltage controls the current sources (120) of the D/A converter in a current mirror manner. The reference voltage is coupled in common to each of the comparators of the D/A converters. In this way, matching among the D/A converters and the accuracy of each are enhanced. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0215421-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0215421-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0939494-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0939494-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2894943-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100342416-C
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9563730-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2894944-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1050969-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9294119-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1050969-A2 |
| priorityDate |
1995-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |