http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1269714-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c186e9ae8cafab5df5c8d80cfa7b0fa1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L27-2085 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L27-2331 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L27-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L27-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L27-233 |
| filingDate | 1987-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1990-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a2ba07c8cfa03661a845a68f51e9deb |
| publicationDate | 1990-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1269714-A |
| titleOfInvention | Psk modem system having improved demodulation reliability |
| abstract | Abstract of the Disclosure A modem system is disclosed which has improved reli-ability of detection of transmitted PSK data using a simple signal delay detection scheme. A transmission signal is produced in which repetitive digital time slots each contain phase encoded "mark" or "space" data. Each time slot includes a reference phase portion at at least one of a front and rear portion of the time slot. The phase of the transmitted signal changes in the remaining portion of each time slot in accordance with applied digital data. For a "mark" data signal the phase changes from a reference phase in a first direction to predetermined phase in a first half of the remaining portion of the time slot, and then back to the reference phase before the end of the time slot. For a "space" data signal the phase changes from the reference value in a second direction opposite the first to another predetermined value in a first half of the remaining portion of the time slot, and then back to the reference phase before the end of the time slot. A simple delay detection demodulation system is used to recreate the original digital signal. |
| priorityDate | 1986-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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