Cross-point matrix for infrared touchscreen
A circuit assembly detects a touch point within a display area. A plurality of light emitters are disposed around a periphery of the display area. A plurality of detectors are disposed around the periphery, each detector being opposed to a respective light emitter. Switching circuitry for connecting...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| 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 | MILNE GREGORY J WEINDORF PAUL FREDRICK LUTHER ANDERSON DAVID RYAN |
| description | A circuit assembly detects a touch point within a display area. A plurality of light emitters are disposed around a periphery of the display area. A plurality of detectors are disposed around the periphery, each detector being opposed to a respective light emitter. Switching circuitry for connecting the light emitters and detectors in a switching matrix has a plurality of matrix rows and matrix columns. The switching circuitry includes a plurality of row lines, each row line corresponding to a respective matrix row and a plurality of column lines, each column line corresponding to a respective matrix column. Low-side switching transistors selectably couple the light emitters and detectors to the row and column lines, respectively. A common modulated signal is coupled to the anodes of all the light emitters. A detection signal is provided by connecting the collector terminals for the detector phototransistors in common. Consequently, high-side multiplexing circuits are avoided. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US6961051B2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US6961051B2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US6961051B23</originalsourceid><addsrcrecordid>eNrjZNB2LsovLtYtyM_MK1HITSwpyqxQSMsvUsjMSytKLEpNUSjJL03OKE4uSk3N42FgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8aHBZpZmhgamhk5GxkQoAQA5rimH</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Cross-point matrix for infrared touchscreen</title><source>esp@cenet</source><creator>MILNE GREGORY J ; WEINDORF PAUL FREDRICK LUTHER ; ANDERSON DAVID RYAN</creator><creatorcontrib>MILNE GREGORY J ; WEINDORF PAUL FREDRICK LUTHER ; ANDERSON DAVID RYAN</creatorcontrib><description>A circuit assembly detects a touch point within a display area. A plurality of light emitters are disposed around a periphery of the display area. A plurality of detectors are disposed around the periphery, each detector being opposed to a respective light emitter. Switching circuitry for connecting the light emitters and detectors in a switching matrix has a plurality of matrix rows and matrix columns. The switching circuitry includes a plurality of row lines, each row line corresponding to a respective matrix row and a plurality of column lines, each column line corresponding to a respective matrix column. Low-side switching transistors selectably couple the light emitters and detectors to the row and column lines, respectively. A common modulated signal is coupled to the anodes of all the light emitters. A detection signal is provided by connecting the collector terminals for the detector phototransistors in common. Consequently, high-side multiplexing circuits are avoided.</description><edition>7</edition><language>eng</language><subject>BASIC ELECTRIC ELEMENTS ; CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; PHYSICS ; SEMICONDUCTOR DEVICES</subject><creationdate>2005</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=20051101&DB=EPODOC&CC=US&NR=6961051B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20051101&DB=EPODOC&CC=US&NR=6961051B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MILNE GREGORY J</creatorcontrib><creatorcontrib>WEINDORF PAUL FREDRICK LUTHER</creatorcontrib><creatorcontrib>ANDERSON DAVID RYAN</creatorcontrib><title>Cross-point matrix for infrared touchscreen</title><description>A circuit assembly detects a touch point within a display area. A plurality of light emitters are disposed around a periphery of the display area. A plurality of detectors are disposed around the periphery, each detector being opposed to a respective light emitter. Switching circuitry for connecting the light emitters and detectors in a switching matrix has a plurality of matrix rows and matrix columns. The switching circuitry includes a plurality of row lines, each row line corresponding to a respective matrix row and a plurality of column lines, each column line corresponding to a respective matrix column. Low-side switching transistors selectably couple the light emitters and detectors to the row and column lines, respectively. A common modulated signal is coupled to the anodes of all the light emitters. A detection signal is provided by connecting the collector terminals for the detector phototransistors in common. Consequently, high-side multiplexing circuits are avoided.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CALCULATING</subject><subject>COMPUTING</subject><subject>COUNTING</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>PHYSICS</subject><subject>SEMICONDUCTOR DEVICES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2005</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNB2LsovLtYtyM_MK1HITSwpyqxQSMsvUsjMSytKLEpNUSjJL03OKE4uSk3N42FgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8aHBZpZmhgamhk5GxkQoAQA5rimH</recordid><startdate>20051101</startdate><enddate>20051101</enddate><creator>MILNE GREGORY J</creator><creator>WEINDORF PAUL FREDRICK LUTHER</creator><creator>ANDERSON DAVID RYAN</creator><scope>EVB</scope></search><sort><creationdate>20051101</creationdate><title>Cross-point matrix for infrared touchscreen</title><author>MILNE GREGORY J ; WEINDORF PAUL FREDRICK LUTHER ; ANDERSON DAVID RYAN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US6961051B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2005</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CALCULATING</topic><topic>COMPUTING</topic><topic>COUNTING</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>PHYSICS</topic><topic>SEMICONDUCTOR DEVICES</topic><toplevel>online_resources</toplevel><creatorcontrib>MILNE GREGORY J</creatorcontrib><creatorcontrib>WEINDORF PAUL FREDRICK LUTHER</creatorcontrib><creatorcontrib>ANDERSON DAVID RYAN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MILNE GREGORY J</au><au>WEINDORF PAUL FREDRICK LUTHER</au><au>ANDERSON DAVID RYAN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Cross-point matrix for infrared touchscreen</title><date>2005-11-01</date><risdate>2005</risdate><abstract>A circuit assembly detects a touch point within a display area. A plurality of light emitters are disposed around a periphery of the display area. A plurality of detectors are disposed around the periphery, each detector being opposed to a respective light emitter. Switching circuitry for connecting the light emitters and detectors in a switching matrix has a plurality of matrix rows and matrix columns. The switching circuitry includes a plurality of row lines, each row line corresponding to a respective matrix row and a plurality of column lines, each column line corresponding to a respective matrix column. Low-side switching transistors selectably couple the light emitters and detectors to the row and column lines, respectively. A common modulated signal is coupled to the anodes of all the light emitters. A detection signal is provided by connecting the collector terminals for the detector phototransistors in common. Consequently, high-side multiplexing circuits are avoided.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng |
| recordid | cdi_epo_espacenet_US6961051B2 |
| source | esp@cenet |
| subjects | BASIC ELECTRIC ELEMENTS CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY PHYSICS SEMICONDUCTOR DEVICES |
| title | Cross-point matrix for infrared touchscreen |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-04T19%3A19%3A49IST&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=MILNE%20GREGORY%20J&rft.date=2005-11-01&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EUS6961051B2%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 |