http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108809321-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03M11-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03M11-20 |
| filingDate | 2016-01-05^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-18^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-18^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108809321-B |
| titleOfInvention | Matrix type keyboard operation identification and coding method |
| abstract | A matrix type keyboard operation identification and coding method comprises the steps that a matrix type keyboard with an X row-Y column key matrix outputs N-bit keyboard state signals, wherein N is X + Y; carrying out data latch on the N-bit keyboard state signal according to the scanning pulse to obtain a current state key value, carrying out state latch on the current state key value and a previous state key value by the latching pulse to obtain a 2 multiplied by N-bit state code, shifting the current state key value by the N shifting pulses to obtain the sequence of the previous state key value, and carrying out corresponding operation repeatedly; the state code is encoded and the key number is output, and the state code is realized by a circuit comprising a matrix keyboard, a first shift register, a second shift register, a state code register and an encoder. If the key operation function needs to be increased or decreased or adjusted, the circuit structure does not need to be modified, and the encoding content of the encoder only needs to be changed according to the corresponding relation between the increased or decreased state code and the key number. The method does not need to write and run programs and works reliably. |
| priorityDate | 2016-01-05^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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