Fremgangsmåte for identifisering av aktivert tast i en ikke-kodet tastatur-matrise, samt krets for iverksettelse av fremgangsmåten
The present invention relates to a method for distorting and the circuit for carrying out this method. The method of distorting consists: a) in output-connecting all the rows and columns of the keyboard to the outputs of a first register (160) of a parallel input-output interface (16) by way of a ci...
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| creator | VERRIER, PHILIPPE FINK, HARTMUT POULENARD, ROGER |
| description | The present invention relates to a method for distorting and the circuit for carrying out this method. The method of distorting consists: a) in output-connecting all the rows and columns of the keyboard to the outputs of a first register (160) of a parallel input-output interface (16) by way of a circuit (163, 166, 164); b) in connecting all the rows and columns of the keyboard to the inputs of the second register (167) of the input-output interface; c) in randomly drawing the order in which the outputs are to be scanned; d) in setting at least one of the outputs to "1" and in observing whether one of the corresponding inputs is at "1"; e) in the contrary case, in scanning each of the remaining lines one by one while setting it to "1" until the associated input is at the value "1"; f) in repeating steps d) and e) to determine the column or respectively the line corresponding to the depressed key of the keyboard. |
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The method of distorting consists: a) in output-connecting all the rows and columns of the keyboard to the outputs of a first register (160) of a parallel input-output interface (16) by way of a circuit (163, 166, 164); b) in connecting all the rows and columns of the keyboard to the inputs of the second register (167) of the input-output interface; c) in randomly drawing the order in which the outputs are to be scanned; d) in setting at least one of the outputs to "1" and in observing whether one of the corresponding inputs is at "1"; e) in the contrary case, in scanning each of the remaining lines one by one while setting it to "1" until the associated input is at the value "1"; f) in repeating steps d) and e) to determine the column or respectively the line corresponding to the depressed key of the keyboard.</description><edition>6</edition><language>nor</language><subject>BASIC ELECTRONIC CIRCUITRY ; CALCULATING ; CODE CONVERSION IN GENERAL ; CODING ; COMPUTING ; COUNTING ; DECODING ; ELECTRIC DIGITAL DATA PROCESSING ; ELECTRICITY ; PHYSICS</subject><creationdate>1995</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=19950403&DB=EPODOC&CC=NO&NR=177073B$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76418</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19950403&DB=EPODOC&CC=NO&NR=177073B$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>VERRIER, PHILIPPE</creatorcontrib><creatorcontrib>FINK, HARTMUT</creatorcontrib><creatorcontrib>POULENARD, ROGER</creatorcontrib><title>Fremgangsmåte for identifisering av aktivert tast i en ikke-kodet tastatur-matrise, samt krets for iverksettelse av fremgangsmåten</title><description>The present invention relates to a method for distorting and the circuit for carrying out this method. The method of distorting consists: a) in output-connecting all the rows and columns of the keyboard to the outputs of a first register (160) of a parallel input-output interface (16) by way of a circuit (163, 166, 164); b) in connecting all the rows and columns of the keyboard to the inputs of the second register (167) of the input-output interface; c) in randomly drawing the order in which the outputs are to be scanned; d) in setting at least one of the outputs to "1" and in observing whether one of the corresponding inputs is at "1"; e) in the contrary case, in scanning each of the remaining lines one by one while setting it to "1" until the associated input is at the value "1"; f) in repeating steps d) and e) to determine the column or respectively the line corresponding to the depressed key of the keyboard.</description><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>CALCULATING</subject><subject>CODE CONVERSION IN GENERAL</subject><subject>CODING</subject><subject>COMPUTING</subject><subject>COUNTING</subject><subject>DECODING</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>ELECTRICITY</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1995</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqFjTEOwjAUQ7swIOAM_ANQCdShexEVEyzs1Rd1qigkqfI_PQFX4SRcjKKyMDFZsv3sefaoE3zHoRP_eirIxES2RVBrrCDZ0BEPxE7tgKSkLEqWEMg6h9zFFpPJek-5Z00jtSFhr-QSVKbBkXUCVdwEnz3zcxqW2czwGK2-usjW9eGyP-boYwPp-YoAbU7nXVluy6Kqiv-NN5yMTF0</recordid><startdate>19950403</startdate><enddate>19950403</enddate><creator>VERRIER, PHILIPPE</creator><creator>FINK, HARTMUT</creator><creator>POULENARD, ROGER</creator><scope>EVB</scope></search><sort><creationdate>19950403</creationdate><title>Fremgangsmåte for identifisering av aktivert tast i en ikke-kodet tastatur-matrise, samt krets for iverksettelse av fremgangsmåten</title><author>VERRIER, PHILIPPE ; FINK, HARTMUT ; POULENARD, ROGER</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_NO177073BB3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>nor</language><creationdate>1995</creationdate><topic>BASIC ELECTRONIC CIRCUITRY</topic><topic>CALCULATING</topic><topic>CODE CONVERSION IN GENERAL</topic><topic>CODING</topic><topic>COMPUTING</topic><topic>COUNTING</topic><topic>DECODING</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>ELECTRICITY</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>VERRIER, PHILIPPE</creatorcontrib><creatorcontrib>FINK, HARTMUT</creatorcontrib><creatorcontrib>POULENARD, ROGER</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>VERRIER, PHILIPPE</au><au>FINK, HARTMUT</au><au>POULENARD, ROGER</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Fremgangsmåte for identifisering av aktivert tast i en ikke-kodet tastatur-matrise, samt krets for iverksettelse av fremgangsmåten</title><date>1995-04-03</date><risdate>1995</risdate><abstract>The present invention relates to a method for distorting and the circuit for carrying out this method. The method of distorting consists: a) in output-connecting all the rows and columns of the keyboard to the outputs of a first register (160) of a parallel input-output interface (16) by way of a circuit (163, 166, 164); b) in connecting all the rows and columns of the keyboard to the inputs of the second register (167) of the input-output interface; c) in randomly drawing the order in which the outputs are to be scanned; d) in setting at least one of the outputs to "1" and in observing whether one of the corresponding inputs is at "1"; e) in the contrary case, in scanning each of the remaining lines one by one while setting it to "1" until the associated input is at the value "1"; f) in repeating steps d) and e) to determine the column or respectively the line corresponding to the depressed key of the keyboard.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRONIC CIRCUITRY CALCULATING CODE CONVERSION IN GENERAL CODING COMPUTING COUNTING DECODING ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS |
| title | Fremgangsmåte for identifisering av aktivert tast i en ikke-kodet tastatur-matrise, samt krets for iverksettelse av fremgangsmåten |
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