DEMODULATORER
A high quality demodulator uses software techniques to recover digital data from an FSK or PSK modulated signal. A Software Costas loop is utilised to convert representative samples of the incoming signal to a baseband signal which is further software processed by a second software loop to provide &...
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| creator | TURNEY PAUL FRANCIS |
| description | A high quality demodulator uses software techniques to recover digital data from an FSK or PSK modulated signal. A Software Costas loop is utilised to convert representative samples of the incoming signal to a baseband signal which is further software processed by a second software loop to provide 'I' and 'Q' output signals with associated timing information. The representative signal samples are derived by Sub Nyquist sampling under control of a microprocessor (100) which provides control values to a digitally controlled oscillator (102). The digitally controlled oscillator (102) controls a sample and hold circuit (103) to select representative signal samples of the in-phase and quadrature phase modulation. |
| format | Patent |
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A Software Costas loop is utilised to convert representative samples of the incoming signal to a baseband signal which is further software processed by a second software loop to provide 'I' and 'Q' output signals with associated timing information. The representative signal samples are derived by Sub Nyquist sampling under control of a microprocessor (100) which provides control values to a digitally controlled oscillator (102). The digitally controlled oscillator (102) controls a sample and hold circuit (103) to select representative signal samples of the in-phase and quadrature phase modulation.</description><edition>3</edition><language>dan</language><subject>ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><creationdate>1984</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&date=19840926&DB=EPODOC&CC=DK&NR=460184A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19840926&DB=EPODOC&CC=DK&NR=460184A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TURNEY PAUL FRANCIS</creatorcontrib><title>DEMODULATORER</title><description>A high quality demodulator uses software techniques to recover digital data from an FSK or PSK modulated signal. A Software Costas loop is utilised to convert representative samples of the incoming signal to a baseband signal which is further software processed by a second software loop to provide 'I' and 'Q' output signals with associated timing information. The representative signal samples are derived by Sub Nyquist sampling under control of a microprocessor (100) which provides control values to a digitally controlled oscillator (102). The digitally controlled oscillator (102) controls a sample and hold circuit (103) to select representative signal samples of the in-phase and quadrature phase modulation.</description><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1984</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOB1cfX1dwn1cQzxD3IN4mFgTUvMKU7lhdLcDHJuriHOHrqpBfnxqcUFicmpeakl8S7eJmYGhhYmjsYEFQAAF1wbjw</recordid><startdate>19840926</startdate><enddate>19840926</enddate><creator>TURNEY PAUL FRANCIS</creator><scope>EVB</scope></search><sort><creationdate>19840926</creationdate><title>DEMODULATORER</title><author>TURNEY PAUL FRANCIS</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_DK460184A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>dan</language><creationdate>1984</creationdate><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</topic><toplevel>online_resources</toplevel><creatorcontrib>TURNEY PAUL FRANCIS</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TURNEY PAUL FRANCIS</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>DEMODULATORER</title><date>1984-09-26</date><risdate>1984</risdate><abstract>A high quality demodulator uses software techniques to recover digital data from an FSK or PSK modulated signal. A Software Costas loop is utilised to convert representative samples of the incoming signal to a baseband signal which is further software processed by a second software loop to provide 'I' and 'Q' output signals with associated timing information. The representative signal samples are derived by Sub Nyquist sampling under control of a microprocessor (100) which provides control values to a digitally controlled oscillator (102). The digitally controlled oscillator (102) controls a sample and hold circuit (103) to select representative signal samples of the in-phase and quadrature phase modulation.</abstract><edition>3</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | DEMODULATORER |
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