| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_02cfb0f1aa2718c61bdf184d53adfe79 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B2205-0084 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B7-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B7-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02N2-142
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B7-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B13-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03B3-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02N2-163
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02N2-008 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03B13-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N5-225
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04N5-232
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L41-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B7-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B7-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B7-36 |
| filingDate |
2013-02-28^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1a4fdd8bf4459000735c6db19c2d4b8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_502df39f14caa3502d5b6e8580392db6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b85420200f94be71f0c3ac5981b6e50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c77f99cd08e9e0a0f5186280ae6f7f6 |
| publicationDate |
2015-01-07^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-104272159-A |
| titleOfInvention |
Drive apparatus, drive method, and optical device |
| abstract |
Noise produced during phase-difference changes is minimized without decreasing the responsiveness of a vibration-wave motor. A lens-side MCU (15) for a lens barrel (10) controls a drive apparatus (14) that applies a drive voltage to the vibration-wave motor (12) by outputting an A-phase drive signal and a B-phase drive signal thereto. The lens-side MCU (15) uses, for example, a drive-voltage setting unit (152) and a duty-cycle change unit (153) to change the drive voltage. Also, the lens-side MCU (15) is provided with a phase-difference change unit (154) that changes the phase difference between the A-phase drive signal and the B-phase drive signal. When driving the vibration-wave motor (12), the lens-side MCU (15) changes the drive voltage to Vreg, and when the phase-difference change unit (154) is changing the aforementioned phase difference, the drive voltage is changed to V1, V1 being greater than zero and less than Vreg. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115037827-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113541529-A |
| priorityDate |
2012-02-28^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |