OPTICAL DISK DEVICE
PROBLEM TO BE SOLVED: To provide an optical disk device shortening a time required for moving an optical head to a target track. SOLUTION: The optical disk device is provided with a rotary drive mechanism loading an optical disk and rotating it, the optical head, an optical head moving mechanism pro...
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| creator | KOBAYASHI KAZUO KOYANAI HIROSHI |
| description | PROBLEM TO BE SOLVED: To provide an optical disk device shortening a time required for moving an optical head to a target track. SOLUTION: The optical disk device is provided with a rotary drive mechanism loading an optical disk and rotating it, the optical head, an optical head moving mechanism provided with a thread motor moving the optical head in the radial direction and a control means. When the optical head is moved to the target track, an absolute value (number of target transition tracks of optical head) Nc of Tc-To is obtained (104), and when Nc |
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SOLUTION: The optical disk device is provided with a rotary drive mechanism loading an optical disk and rotating it, the optical head, an optical head moving mechanism provided with a thread motor moving the optical head in the radial direction and a control means. When the optical head is moved to the target track, an absolute value (number of target transition tracks of optical head) Nc of Tc-To is obtained (104), and when Nc<=8000, a head transfer pulse voltage of +5 V, 25 ms (109), a brake pulse voltage of -5 V, 15 ms (113) and the brake pulse of -5 V, 5 ms (115) are set, and when 1500<=Nc<8000, the head transfer pulse voltage of +5 V, 20 ms (111) and the brake pulse voltage of -5 V, 5 ms (115) are set, and when 120<=Nc<1500, the head transfer pulse voltage of +5 V, 5 ms (110) is set.</description><edition>7</edition><language>eng</language><subject>INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; PHYSICS</subject><creationdate>2000</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=20000114&DB=EPODOC&CC=JP&NR=2000011395A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20000114&DB=EPODOC&CC=JP&NR=2000011395A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KOBAYASHI KAZUO</creatorcontrib><creatorcontrib>KOYANAI HIROSHI</creatorcontrib><title>OPTICAL DISK DEVICE</title><description>PROBLEM TO BE SOLVED: To provide an optical disk device shortening a time required for moving an optical head to a target track. SOLUTION: The optical disk device is provided with a rotary drive mechanism loading an optical disk and rotating it, the optical head, an optical head moving mechanism provided with a thread motor moving the optical head in the radial direction and a control means. When the optical head is moved to the target track, an absolute value (number of target transition tracks of optical head) Nc of Tc-To is obtained (104), and when Nc<=8000, a head transfer pulse voltage of +5 V, 25 ms (109), a brake pulse voltage of -5 V, 15 ms (113) and the brake pulse of -5 V, 5 ms (115) are set, and when 1500<=Nc<8000, the head transfer pulse voltage of +5 V, 20 ms (111) and the brake pulse voltage of -5 V, 5 ms (115) are set, and when 120<=Nc<1500, the head transfer pulse voltage of +5 V, 5 ms (110) is set.</description><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2000</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBD2DwjxdHb0UXDxDPZWcHEN83R25WFgTUvMKU7lhdLcDEpuriHOHrqpBfnxqcUFicmpeakl8V4BRgZAYGhobGnqaEyUIgCCVx5_</recordid><startdate>20000114</startdate><enddate>20000114</enddate><creator>KOBAYASHI KAZUO</creator><creator>KOYANAI HIROSHI</creator><scope>EVB</scope></search><sort><creationdate>20000114</creationdate><title>OPTICAL DISK DEVICE</title><author>KOBAYASHI KAZUO ; KOYANAI HIROSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2000011395A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2000</creationdate><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>KOBAYASHI KAZUO</creatorcontrib><creatorcontrib>KOYANAI HIROSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KOBAYASHI KAZUO</au><au>KOYANAI HIROSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>OPTICAL DISK DEVICE</title><date>2000-01-14</date><risdate>2000</risdate><abstract>PROBLEM TO BE SOLVED: To provide an optical disk device shortening a time required for moving an optical head to a target track. SOLUTION: The optical disk device is provided with a rotary drive mechanism loading an optical disk and rotating it, the optical head, an optical head moving mechanism provided with a thread motor moving the optical head in the radial direction and a control means. When the optical head is moved to the target track, an absolute value (number of target transition tracks of optical head) Nc of Tc-To is obtained (104), and when Nc<=8000, a head transfer pulse voltage of +5 V, 25 ms (109), a brake pulse voltage of -5 V, 15 ms (113) and the brake pulse of -5 V, 5 ms (115) are set, and when 1500<=Nc<8000, the head transfer pulse voltage of +5 V, 20 ms (111) and the brake pulse voltage of -5 V, 5 ms (115) are set, and when 120<=Nc<1500, the head transfer pulse voltage of +5 V, 5 ms (110) is set.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS |
| title | OPTICAL DISK DEVICE |
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