Optical keyboard with common light transmission members
PCT No. PCT/US82/00379 Sec. 371 Date Mar. 29, 1982 Sec. 102(e) Date Mar. 29, 1982 PCT Filed Mar. 29, 1982.A keyboard assembly (FIG. 1, 11) is constructed of first light transmission members (13) second light transmission members (15), a key actuation assembly (17) having a matrix of keybuttons (25),...
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creator | SUBLETTE JERRY M PATERSON ROBERT L |
description | PCT No. PCT/US82/00379 Sec. 371 Date Mar. 29, 1982 Sec. 102(e) Date Mar. 29, 1982 PCT Filed Mar. 29, 1982.A keyboard assembly (FIG. 1, 11) is constructed of first light transmission members (13) second light transmission members (15), a key actuation assembly (17) having a matrix of keybuttons (25), plural light source assembly (19) and plural sensor assembly (21). Each light source on assembly (19) is exclusively and sequentially energized causing its light to be transmitted through the first light transmission member (13) to be split up and deflected downwardly by the surfaces (43) and then rightwardly by the surfaces (45) to emanate through the surfaces (47) to enter the surfaces (49) of the second light transmission member. Actuation of a keybutton (25) causes its associated interrupter (29) to assume a light blocking position between the first light transmission member (13) and a second light transmission member (15). Light passing through the second light transmission member (15) to the sensor array indicates that none of the interrupters (29) have blocked the light path. This geometrical arrangement provides N key rollover detection with phantom key lockout and the light transmission members (13, 15) may be made of a single part or a single part for each row or column. Such parts provide common light transmission paths. |
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Each light source on assembly (19) is exclusively and sequentially energized causing its light to be transmitted through the first light transmission member (13) to be split up and deflected downwardly by the surfaces (43) and then rightwardly by the surfaces (45) to emanate through the surfaces (47) to enter the surfaces (49) of the second light transmission member. Actuation of a keybutton (25) causes its associated interrupter (29) to assume a light blocking position between the first light transmission member (13) and a second light transmission member (15). Light passing through the second light transmission member (15) to the sensor array indicates that none of the interrupters (29) have blocked the light path. This geometrical arrangement provides N key rollover detection with phantom key lockout and the light transmission members (13, 15) may be made of a single part or a single part for each row or column. Such parts provide common light transmission paths.</description><language>eng</language><subject>BASIC ELECTRONIC CIRCUITRY ; CORRECTION OF TYPOGRAPHICAL ERRORS ; ELECTRICITY ; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME ; LINING MACHINES ; PERFORMING OPERATIONS ; PRINTING ; PULSE TECHNIQUE ; SELECTIVE PRINTING MECHANISMS ; STAMPS ; TRANSPORTING ; TYPEWRITERS</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&date=19831129&DB=EPODOC&CC=US&NR=4417824A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19831129&DB=EPODOC&CC=US&NR=4417824A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SUBLETTE; JERRY M</creatorcontrib><creatorcontrib>PATERSON; ROBERT L</creatorcontrib><title>Optical keyboard with common light transmission members</title><description>PCT No. PCT/US82/00379 Sec. 371 Date Mar. 29, 1982 Sec. 102(e) Date Mar. 29, 1982 PCT Filed Mar. 29, 1982.A keyboard assembly (FIG. 1, 11) is constructed of first light transmission members (13) second light transmission members (15), a key actuation assembly (17) having a matrix of keybuttons (25), plural light source assembly (19) and plural sensor assembly (21). Each light source on assembly (19) is exclusively and sequentially energized causing its light to be transmitted through the first light transmission member (13) to be split up and deflected downwardly by the surfaces (43) and then rightwardly by the surfaces (45) to emanate through the surfaces (47) to enter the surfaces (49) of the second light transmission member. Actuation of a keybutton (25) causes its associated interrupter (29) to assume a light blocking position between the first light transmission member (13) and a second light transmission member (15). Light passing through the second light transmission member (15) to the sensor array indicates that none of the interrupters (29) have blocked the light path. This geometrical arrangement provides N key rollover detection with phantom key lockout and the light transmission members (13, 15) may be made of a single part or a single part for each row or column. Such parts provide common light transmission paths.</description><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>CORRECTION OF TYPOGRAPHICAL ERRORS</subject><subject>ELECTRICITY</subject><subject>i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME</subject><subject>LINING MACHINES</subject><subject>PERFORMING OPERATIONS</subject><subject>PRINTING</subject><subject>PULSE TECHNIQUE</subject><subject>SELECTIVE PRINTING MECHANISMS</subject><subject>STAMPS</subject><subject>TRANSPORTING</subject><subject>TYPEWRITERS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1983</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDD3LyjJTE7MUchOrUzKTyxKUSjPLMlQSM7Pzc3PU8jJTM8oUSgpSswrzs0sLs4ECuWm5ialFhXzMLCmJeYUp_JCaW4GeTfXEGcP3dSC_PjU4oLE5NS81JL40GATE0NzCyMTR2PCKgBbdi3T</recordid><startdate>19831129</startdate><enddate>19831129</enddate><creator>SUBLETTE; JERRY M</creator><creator>PATERSON; ROBERT L</creator><scope>EVB</scope></search><sort><creationdate>19831129</creationdate><title>Optical keyboard with common light transmission members</title><author>SUBLETTE; JERRY M ; PATERSON; ROBERT L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US4417824A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1983</creationdate><topic>BASIC ELECTRONIC CIRCUITRY</topic><topic>CORRECTION OF TYPOGRAPHICAL ERRORS</topic><topic>ELECTRICITY</topic><topic>i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME</topic><topic>LINING MACHINES</topic><topic>PERFORMING OPERATIONS</topic><topic>PRINTING</topic><topic>PULSE TECHNIQUE</topic><topic>SELECTIVE PRINTING MECHANISMS</topic><topic>STAMPS</topic><topic>TRANSPORTING</topic><topic>TYPEWRITERS</topic><toplevel>online_resources</toplevel><creatorcontrib>SUBLETTE; JERRY M</creatorcontrib><creatorcontrib>PATERSON; ROBERT L</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SUBLETTE; JERRY M</au><au>PATERSON; ROBERT L</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Optical keyboard with common light transmission members</title><date>1983-11-29</date><risdate>1983</risdate><abstract>PCT No. PCT/US82/00379 Sec. 371 Date Mar. 29, 1982 Sec. 102(e) Date Mar. 29, 1982 PCT Filed Mar. 29, 1982.A keyboard assembly (FIG. 1, 11) is constructed of first light transmission members (13) second light transmission members (15), a key actuation assembly (17) having a matrix of keybuttons (25), plural light source assembly (19) and plural sensor assembly (21). Each light source on assembly (19) is exclusively and sequentially energized causing its light to be transmitted through the first light transmission member (13) to be split up and deflected downwardly by the surfaces (43) and then rightwardly by the surfaces (45) to emanate through the surfaces (47) to enter the surfaces (49) of the second light transmission member. Actuation of a keybutton (25) causes its associated interrupter (29) to assume a light blocking position between the first light transmission member (13) and a second light transmission member (15). Light passing through the second light transmission member (15) to the sensor array indicates that none of the interrupters (29) have blocked the light path. This geometrical arrangement provides N key rollover detection with phantom key lockout and the light transmission members (13, 15) may be made of a single part or a single part for each row or column. Such parts provide common light transmission paths.</abstract><oa>free_for_read</oa></addata></record> |
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subjects | BASIC ELECTRONIC CIRCUITRY CORRECTION OF TYPOGRAPHICAL ERRORS ELECTRICITY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES PERFORMING OPERATIONS PRINTING PULSE TECHNIQUE SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS |
title | Optical keyboard with common light transmission members |
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