http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105677055-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G06F3-0202 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G06F3-02 |
| filingDate | 2016-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105677055-B |
| titleOfInvention | matrix keyboard scanning circuit and method |
| abstract | A kind of matrix keyboard scanning circuit is made of matrix keyboard, the first shift register, the second shift register, state Code memory, encoder.The scan method of the scanning circuit is, via the control for the scanning pulse, shift pulse for meeting specific time sequence requirement, by the single key stroke of matrix keyboard, combination key operation, the state either maintained, the effective status code of same binary length and invalid state code are converted into, effective key number corresponding with each effective status code is exported after encoder encodes and either exports invalid key number corresponding with all invalid state codes；Different single key stroke, combination key operation or the states of maintenance are only embodied in not being same as above for conditional code；Button operation function is either adjusted if necessary to increase and decrease button operation function, does not need to modification keyboard scanning circuit structure, only need to encoder be changed according to the correspondence between the conditional code after increase and decrease and key number.The invention circuit does not have to write and run program, reliable operation. |
| priorityDate | 2016-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.