Apparatus and program for arctangent calculation
An arctangent calculation apparatus (1) includes a phase angle memory unit (2) in which a phase angle is stored in advance, the phase angle corresponding to a two-dimensional vector value in a range of 0° to 22.5°; a vector rotation unit (3) that performs a vector rotation operation on a two-dimensi...
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| creator | OOTA, MASATO |
| description | An arctangent calculation apparatus (1) includes a phase angle memory unit (2) in which a phase angle is stored in advance, the phase angle corresponding to a two-dimensional vector value in a range of 0° to 22.5°; a vector rotation unit (3) that performs a vector rotation operation on a two-dimensional vector value in a range of 0° to 360° and converts the two-dimensional vector value in a range of 0° to 360° into a two-dimensional vector value in a range of 0° to 22.5°; an arctangent calculation unit (4) that outputs, from the phase angle memory unit (2), a phase angle that corresponds to the two-dimensional vector value in a range of 0° to 22.5°; and a phase angle conversion unit (5) that converts the phase angle into a phase angle in a range of 0° to 360°. |
| format | Patent |
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an arctangent calculation unit (4) that outputs, from the phase angle memory unit (2), a phase angle that corresponds to the two-dimensional vector value in a range of 0° to 22.5°; and a phase angle conversion unit (5) that converts the phase angle into a phase angle in a range of 0° to 360°.</description><language>eng ; fre ; ger</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; PHYSICS</subject><creationdate>2011</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=20110119&DB=EPODOC&CC=EP&NR=2275923A2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,777,882,25545,76296</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20110119&DB=EPODOC&CC=EP&NR=2275923A2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>OOTA, MASATO</creatorcontrib><title>Apparatus and program for arctangent calculation</title><description>An arctangent calculation apparatus (1) includes a phase angle memory unit (2) in which a phase angle is stored in advance, the phase angle corresponding to a two-dimensional vector value in a range of 0° to 22.5°; 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an arctangent calculation unit (4) that outputs, from the phase angle memory unit (2), a phase angle that corresponds to the two-dimensional vector value in a range of 0° to 22.5°; and a phase angle conversion unit (5) that converts the phase angle into a phase angle in a range of 0° to 360°.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS |
| title | Apparatus and program for arctangent calculation |
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