http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-940010024-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B19-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B19-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B19-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B19-247 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B19-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B19-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B19-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B19-247 |
| filingDate | 1992-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1994-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-940010024-A |
| titleOfInvention | Spindle Motor Control Circuit of Optical Disc System |
| abstract | The present invention relates to a control circuit of a spindle motor of an optical disk system that controls rotation of a disk by a servo of a constant linear velocity (CLV). The spindle motor control circuit includes a spindle motor rotation detection means for generating a phase frequency (FGO) of a motor corresponding to the rotation of the spindle motor, and a difference of the period of the phase frequency (FGO) by comparing the period of the phase frequency (FGO) with target speed data. A velocity error signal generating means for generating velocity error data for the second phase; and a phase position pulse RST3 immediately before moving from a current position by inputting the phase frequency FGO of the motor and simultaneously outputting the phase frequency FGO. Phase count pulse generating means for detecting the upper and lower edges of the < RTI ID = 0.0 >) < / RTI > ) Is preset, and the input of the output double edge detection pulse WED is input to the input of the position phase pulse RST3. Target phase detection means for outputting a target phase detection signal PD for each cycle counting up to the target phase data Ya, and data Xa corresponding to N times the reference target speed data Xc. It is set in one rotation period and operated at the input of the position phase pulse RST3 to count the clock CLK1, and operated at the input of the reference phase control signal RST3 every Xa to count the clock CLK1 to reference the reference phase for each Xa. A reference phase signal generating means for outputting a control signal RST4 and a reference phase control signal RST4 outputted from the reference phase signal generating means are operated to detect a phase value between a current phase and a target phase; Generates a phase error signal in response to the input of the target phase detection signal PD and outputs a phase error signal PED, and outputs a phase error signal preset by the input of the phase servo control signal RST5. And drive means for driving the spindle motor by generating a speed drive voltage and a phase drive voltage corresponding to the speed error data and the phase error data output from the speed error signal generation means and the phase error signal generation means, respectively. . |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100246791-B1 |
| priorityDate | 1992-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.