ECHO CANCELLER

ECHO CANCELLER

PURPOSE:To always attain effective cancellation of echo, by detecting the change in an echo path characteristic and suitably setting the timing of training. CONSTITUTION:A training signal from a training signal generating circuit 7 is applied to a hybrid circuit 1, in place of a transmission signal...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: MINAMI SHIGENOBU, KAWASAKI TADAMICHI
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page
container_issue
container_start_page
container_title
container_volume
creator MINAMI SHIGENOBU
KAWASAKI TADAMICHI
description PURPOSE:To always attain effective cancellation of echo, by detecting the change in an echo path characteristic and suitably setting the timing of training. CONSTITUTION:A training signal from a training signal generating circuit 7 is applied to a hybrid circuit 1, in place of a transmission signal applied via a transmission amplifier 4 from a switch circuit 6 controlled with a line fluctuation detector 8. A virtual echo signal generator 2 estimates the echo path characteristics based on the training signal and holds the estimated value. Further, the swtich circuit 6 is changed over, a transmission signal is applied to the hybrid circuit 1 for communication. If line fluctuation takes place during the communication, the line fluctuation detector 8 detects this fluctuation, the switch circuit 6 is changed over, and the virtual echo signal generator 2 is controlled to the estimation mode. Thus, the virtual echo signal generator 2 again makes estimation.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JPS5890832A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JPS5890832A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JPS5890832A3</originalsourceid><addsrcrecordid>eNrjZOBzdfbwV3B29HN29fFxDeJhYE1LzClO5YXS3AwKbq4hzh66qQX58anFBYnJqXmpJfFeAcGmFpYGFsZGjsZEKAEAiaMcuQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>ECHO CANCELLER</title><source>esp@cenet</source><creator>MINAMI SHIGENOBU ; KAWASAKI TADAMICHI</creator><creatorcontrib>MINAMI SHIGENOBU ; KAWASAKI TADAMICHI</creatorcontrib><description>PURPOSE:To always attain effective cancellation of echo, by detecting the change in an echo path characteristic and suitably setting the timing of training. CONSTITUTION:A training signal from a training signal generating circuit 7 is applied to a hybrid circuit 1, in place of a transmission signal applied via a transmission amplifier 4 from a switch circuit 6 controlled with a line fluctuation detector 8. A virtual echo signal generator 2 estimates the echo path characteristics based on the training signal and holds the estimated value. Further, the swtich circuit 6 is changed over, a transmission signal is applied to the hybrid circuit 1 for communication. If line fluctuation takes place during the communication, the line fluctuation detector 8 detects this fluctuation, the switch circuit 6 is changed over, and the virtual echo signal generator 2 is controlled to the estimation mode. Thus, the virtual echo signal generator 2 again makes estimation.</description><language>eng</language><subject>ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; TRANSMISSION</subject><creationdate>1983</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19830530&amp;DB=EPODOC&amp;CC=JP&amp;NR=S5890832A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19830530&amp;DB=EPODOC&amp;CC=JP&amp;NR=S5890832A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MINAMI SHIGENOBU</creatorcontrib><creatorcontrib>KAWASAKI TADAMICHI</creatorcontrib><title>ECHO CANCELLER</title><description>PURPOSE:To always attain effective cancellation of echo, by detecting the change in an echo path characteristic and suitably setting the timing of training. CONSTITUTION:A training signal from a training signal generating circuit 7 is applied to a hybrid circuit 1, in place of a transmission signal applied via a transmission amplifier 4 from a switch circuit 6 controlled with a line fluctuation detector 8. A virtual echo signal generator 2 estimates the echo path characteristics based on the training signal and holds the estimated value. Further, the swtich circuit 6 is changed over, a transmission signal is applied to the hybrid circuit 1 for communication. If line fluctuation takes place during the communication, the line fluctuation detector 8 detects this fluctuation, the switch circuit 6 is changed over, and the virtual echo signal generator 2 is controlled to the estimation mode. Thus, the virtual echo signal generator 2 again makes estimation.</description><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>TRANSMISSION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1983</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOBzdfbwV3B29HN29fFxDeJhYE1LzClO5YXS3AwKbq4hzh66qQX58anFBYnJqXmpJfFeAcGmFpYGFsZGjsZEKAEAiaMcuQ</recordid><startdate>19830530</startdate><enddate>19830530</enddate><creator>MINAMI SHIGENOBU</creator><creator>KAWASAKI TADAMICHI</creator><scope>EVB</scope></search><sort><creationdate>19830530</creationdate><title>ECHO CANCELLER</title><author>MINAMI SHIGENOBU ; KAWASAKI TADAMICHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS5890832A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1983</creationdate><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>TRANSMISSION</topic><toplevel>online_resources</toplevel><creatorcontrib>MINAMI SHIGENOBU</creatorcontrib><creatorcontrib>KAWASAKI TADAMICHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MINAMI SHIGENOBU</au><au>KAWASAKI TADAMICHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ECHO CANCELLER</title><date>1983-05-30</date><risdate>1983</risdate><abstract>PURPOSE:To always attain effective cancellation of echo, by detecting the change in an echo path characteristic and suitably setting the timing of training. CONSTITUTION:A training signal from a training signal generating circuit 7 is applied to a hybrid circuit 1, in place of a transmission signal applied via a transmission amplifier 4 from a switch circuit 6 controlled with a line fluctuation detector 8. A virtual echo signal generator 2 estimates the echo path characteristics based on the training signal and holds the estimated value. Further, the swtich circuit 6 is changed over, a transmission signal is applied to the hybrid circuit 1 for communication. If line fluctuation takes place during the communication, the line fluctuation detector 8 detects this fluctuation, the switch circuit 6 is changed over, and the virtual echo signal generator 2 is controlled to the estimation mode. Thus, the virtual echo signal generator 2 again makes estimation.</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_JPS5890832A
source esp@cenet
subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
title ECHO CANCELLER
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-23T03%3A10%3A21IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=MINAMI%20SHIGENOBU&rft.date=1983-05-30&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EJPS5890832A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true