http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3826878-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4ddcb273a108a5d8472b335280098e06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B3-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B3-20 |
| filingDate | 1971-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1974-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a4ca2d83c531568183601da1f6eb9021 |
| publicationDate | 1974-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3826878-A |
| titleOfInvention | Echo suppressor for a speech circuit in a four-wire transmission system |
| abstract | An echo suppressor for a speech circuit in a four-wire transmission system is inserted into the two transmission directions which are regarded as a transmission path and a receiving path, respectively, with respect to a hybrid connecting the four-wire system to a two-wire system. The echo suppressor has a suppression member connected in the transmission path and controlled with the help of transmission side and receiving side speech detectors. Each of the speech detectors includes filtering means defining at least two speech frequency ranges, and means are provided for controlling the operation of the suppression member in response to speech signal detection wherein detection of speech signal conditions does not necessarily effect or eliminate suppression in the transmitting path. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4028506-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4215252-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6510224-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4368360-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3906172-A |
| priorityDate | 1970-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID10720 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID414867221 |
Total number of triples: 19.