Coil load driving circuit and optical disc device
TR1TR2 IN REFTR1TR2A coil load driving circuit in which generation of radiation noise when a motor is stationary is minimized, includes output buffers that output a PWM pulse to both terminals of a motor; a transfer voltage generating circuit that outputs transfer voltages V, Vproportional to the di...
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| creator | Okubo, Toshiro |
| description | TR1TR2 IN REFTR1TR2A coil load driving circuit in which generation of radiation noise when a motor is stationary is minimized, includes output buffers that output a PWM pulse to both terminals of a motor; a transfer voltage generating circuit that outputs transfer voltages V, Vproportional to the difference between an input control voltage Vand input reference voltage V; PWM comparators that output PWM signals PW, PW corresponding to the transfer voltages V, V; and an output PWM pulse synthesis circuit that controls the output buffer in accordance with an AND signal of the PWM signal PW and an exclusive OR signal EX of the PWM signals PW and PW, and controls the output buffer in accordance with an AND signal of the PWM signal PW and the exclusive OR signal EX. |
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a transfer voltage generating circuit that outputs transfer voltages V, Vproportional to the difference between an input control voltage Vand input reference voltage V; PWM comparators that output PWM signals PW, PW corresponding to the transfer voltages V, V; and an output PWM pulse synthesis circuit that controls the output buffer in accordance with an AND signal of the PWM signal PW and an exclusive OR signal EX of the PWM signals PW and PW, and controls the output buffer in accordance with an AND signal of the PWM signal PW and the exclusive OR signal EX.</description><language>eng</language><creationdate>2009</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7630616$$EPDF$$P50$$Guspatents$$Hfree_for_read</linktopdf><link.rule.ids>230,308,780,802,885,64038</link.rule.ids><linktorsrc>$$Uhttps://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7630616$$EView_record_in_USPTO$$FView_record_in_$$GUSPTO$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Okubo, Toshiro</creatorcontrib><creatorcontrib>Rohm Co., Ltd</creatorcontrib><title>Coil load driving circuit and optical disc device</title><description>TR1TR2 IN REFTR1TR2A coil load driving circuit in which generation of radiation noise when a motor is stationary is minimized, includes output buffers that output a PWM pulse to both terminals of a motor; a transfer voltage generating circuit that outputs transfer voltages V, Vproportional to the difference between an input control voltage Vand input reference voltage V; PWM comparators that output PWM signals PW, PW corresponding to the transfer voltages V, V; and an output PWM pulse synthesis circuit that controls the output buffer in accordance with an AND signal of the PWM signal PW and an exclusive OR signal EX of the PWM signals PW and PW, and controls the output buffer in accordance with an AND signal of the PWM signal PW and the exclusive OR signal EX.</description><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2009</creationdate><recordtype>patent</recordtype><sourceid>EFH</sourceid><recordid>eNrjZDB0zs_MUcjJT0xRSCnKLMvMS1dIzixKLs0sUUjMS1HILyjJTE7MUUjJLE5WSEkty0xO5WFgTUvMKU7lhdLcDApuriHOHrqlxQWJJal5JcXx6UWJIMrA3MzYwMzQzJgIJQA3Yywf</recordid><startdate>20091208</startdate><enddate>20091208</enddate><creator>Okubo, Toshiro</creator><scope>EFH</scope></search><sort><creationdate>20091208</creationdate><title>Coil load driving circuit and optical disc device</title><author>Okubo, Toshiro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-uspatents_grants_076306163</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2009</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Okubo, Toshiro</creatorcontrib><creatorcontrib>Rohm Co., Ltd</creatorcontrib><collection>USPTO Issued Patents</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Okubo, Toshiro</au><aucorp>Rohm Co., Ltd</aucorp><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Coil load driving circuit and optical disc device</title><date>2009-12-08</date><risdate>2009</risdate><abstract>TR1TR2 IN REFTR1TR2A coil load driving circuit in which generation of radiation noise when a motor is stationary is minimized, includes output buffers that output a PWM pulse to both terminals of a motor; a transfer voltage generating circuit that outputs transfer voltages V, Vproportional to the difference between an input control voltage Vand input reference voltage V; PWM comparators that output PWM signals PW, PW corresponding to the transfer voltages V, V; and an output PWM pulse synthesis circuit that controls the output buffer in accordance with an AND signal of the PWM signal PW and an exclusive OR signal EX of the PWM signals PW and PW, and controls the output buffer in accordance with an AND signal of the PWM signal PW and the exclusive OR signal EX.</abstract><oa>free_for_read</oa></addata></record> |
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| title | Coil load driving circuit and optical disc device |
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