SYNCHRONOUS DETECTION OF WIDE BI-PHASE CODED SERVO INFORMATION FOR DISK DRIVE
A magnetic disk drive data storage disk defines recording tracks divided into data sectors by narrow servo spokes. A data sector lying between servo spokes is recorded with user data encoded in accordance with a code having a predetermined distance and user data code rate. Each servo spoke of the re...
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| creator | FISHER, KEVIN, D EHRLICH, RICHARD, M LEIS, MICHAEL, D AKIN, WILLIAM, R., JR HENSON, JAMES, A PATAPOUTIAN, ARA VEA, MATHEW, P |
| description | A magnetic disk drive data storage disk defines recording tracks divided into data sectors by narrow servo spokes. A data sector lying between servo spokes is recorded with user data encoded in accordance with a code having a predetermined distance and user data code rate. Each servo spoke of the recording area has at least one servo information field encoded in a wide bi-phase code pattern. The disk drive further includes a synchronous sampling data detection channel having a data transducer head positioned by a servo-controlled actuator over the recording track, a preamplifier for receiving electrical analog signals magnetically induced by the data transducer head from flux transitions present in at least the servo information field, a digital sampler for synchronously sampling the electrical analog signals to produce digital samples, and wide bi-phase decoding circuitry coupled to receive digital samples from the synchronous sampling data detection channel for decoding the wide bi-phase code pattern. |
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A data sector lying between servo spokes is recorded with user data encoded in accordance with a code having a predetermined distance and user data code rate. Each servo spoke of the recording area has at least one servo information field encoded in a wide bi-phase code pattern. The disk drive further includes a synchronous sampling data detection channel having a data transducer head positioned by a servo-controlled actuator over the recording track, a preamplifier for receiving electrical analog signals magnetically induced by the data transducer head from flux transitions present in at least the servo information field, a digital sampler for synchronously sampling the electrical analog signals to produce digital samples, and wide bi-phase decoding circuitry coupled to receive digital samples from the synchronous sampling data detection channel for decoding the wide bi-phase code pattern.</description><edition>7</edition><language>eng ; fre ; ger</language><subject>BASIC ELECTRONIC CIRCUITRY ; CODE CONVERSION IN GENERAL ; CODING ; DECODING ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; PHYSICS ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</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=20050309&DB=EPODOC&CC=EP&NR=0804846B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20050309&DB=EPODOC&CC=EP&NR=0804846B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FISHER, KEVIN, D</creatorcontrib><creatorcontrib>EHRLICH, RICHARD, M</creatorcontrib><creatorcontrib>LEIS, MICHAEL, D</creatorcontrib><creatorcontrib>AKIN, WILLIAM, R., JR</creatorcontrib><creatorcontrib>HENSON, JAMES, A</creatorcontrib><creatorcontrib>PATAPOUTIAN, ARA</creatorcontrib><creatorcontrib>VEA, MATHEW, P</creatorcontrib><title>SYNCHRONOUS DETECTION OF WIDE BI-PHASE CODED SERVO INFORMATION FOR DISK DRIVE</title><description>A magnetic disk drive data storage disk defines recording tracks divided into data sectors by narrow servo spokes. A data sector lying between servo spokes is recorded with user data encoded in accordance with a code having a predetermined distance and user data code rate. Each servo spoke of the recording area has at least one servo information field encoded in a wide bi-phase code pattern. The disk drive further includes a synchronous sampling data detection channel having a data transducer head positioned by a servo-controlled actuator over the recording track, a preamplifier for receiving electrical analog signals magnetically induced by the data transducer head from flux transitions present in at least the servo information field, a digital sampler for synchronously sampling the electrical analog signals to produce digital samples, and wide bi-phase decoding circuitry coupled to receive digital samples from the synchronous sampling data detection channel for decoding the wide bi-phase code pattern.</description><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>CODE CONVERSION IN GENERAL</subject><subject>CODING</subject><subject>DECODING</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>PHYSICS</subject><subject>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2005</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZPANjvRz9gjy9_MPDVZwcQ1xdQ7x9PdT8HdTCPd0cVVw8tQN8HAMdlVw9ndxdVEIdg0K81fw9HPzD_J1BCsEshRcPIO9FVyCPMNceRhY0xJzilN5oTQ3g4Kba4izh25qQX58anFBYnJqXmpJvGuAgYWBiYWJmZOhMRFKAJA1Lcs</recordid><startdate>20050309</startdate><enddate>20050309</enddate><creator>FISHER, KEVIN, D</creator><creator>EHRLICH, RICHARD, M</creator><creator>LEIS, MICHAEL, D</creator><creator>AKIN, WILLIAM, R., JR</creator><creator>HENSON, JAMES, A</creator><creator>PATAPOUTIAN, ARA</creator><creator>VEA, MATHEW, P</creator><scope>EVB</scope></search><sort><creationdate>20050309</creationdate><title>SYNCHRONOUS DETECTION OF WIDE BI-PHASE CODED SERVO INFORMATION FOR DISK DRIVE</title><author>FISHER, KEVIN, D ; EHRLICH, RICHARD, M ; LEIS, MICHAEL, D ; AKIN, WILLIAM, R., JR ; HENSON, JAMES, A ; PATAPOUTIAN, ARA ; VEA, MATHEW, P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0804846B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2005</creationdate><topic>BASIC ELECTRONIC CIRCUITRY</topic><topic>CODE CONVERSION IN GENERAL</topic><topic>CODING</topic><topic>DECODING</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>PHYSICS</topic><topic>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</topic><toplevel>online_resources</toplevel><creatorcontrib>FISHER, KEVIN, D</creatorcontrib><creatorcontrib>EHRLICH, RICHARD, M</creatorcontrib><creatorcontrib>LEIS, MICHAEL, D</creatorcontrib><creatorcontrib>AKIN, WILLIAM, R., JR</creatorcontrib><creatorcontrib>HENSON, JAMES, A</creatorcontrib><creatorcontrib>PATAPOUTIAN, ARA</creatorcontrib><creatorcontrib>VEA, MATHEW, P</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>FISHER, KEVIN, D</au><au>EHRLICH, RICHARD, M</au><au>LEIS, MICHAEL, D</au><au>AKIN, WILLIAM, R., JR</au><au>HENSON, JAMES, A</au><au>PATAPOUTIAN, ARA</au><au>VEA, MATHEW, P</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SYNCHRONOUS DETECTION OF WIDE BI-PHASE CODED SERVO INFORMATION FOR DISK DRIVE</title><date>2005-03-09</date><risdate>2005</risdate><abstract>A magnetic disk drive data storage disk defines recording tracks divided into data sectors by narrow servo spokes. A data sector lying between servo spokes is recorded with user data encoded in accordance with a code having a predetermined distance and user data code rate. Each servo spoke of the recording area has at least one servo information field encoded in a wide bi-phase code pattern. The disk drive further includes a synchronous sampling data detection channel having a data transducer head positioned by a servo-controlled actuator over the recording track, a preamplifier for receiving electrical analog signals magnetically induced by the data transducer head from flux transitions present in at least the servo information field, a digital sampler for synchronously sampling the electrical analog signals to produce digital samples, and wide bi-phase decoding circuitry coupled to receive digital samples from the synchronous sampling data detection channel for decoding the wide bi-phase code pattern.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | SYNCHRONOUS DETECTION OF WIDE BI-PHASE CODED SERVO INFORMATION FOR DISK DRIVE |
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