OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE
PURPOSE:To diminish useless movement of an objective lens and to prevent detracking by changing a limit current to be inputted to a moving means by a tracking control means in accordance with its frequency. CONSTITUTION:A signal to be inputted to the moving means 111 is limited to a limit value by t...
Saved in:
| Main Author | |
|---|---|
| Format | Patent |
| Language | English |
| Published |
23.04.1991
|
| Subjects | |
| Online Access | Get full text |
Cover
Loading…
| Abstract | PURPOSE:To diminish useless movement of an objective lens and to prevent detracking by changing a limit current to be inputted to a moving means by a tracking control means in accordance with its frequency. CONSTITUTION:A signal to be inputted to the moving means 111 is limited to a limit value by the tracking control means 217, and also the limit value is changed by the frequency. That is, when noise is generated in a signal 203 due to dust or a flaw on a medium, a current to flow in a tracking coil 111 is limited to a low value because the frequency of this noise is relatively high. By this method, useless movement of the objective lens is diminished, and detracking is prevented. |
|---|---|
| AbstractList | PURPOSE:To diminish useless movement of an objective lens and to prevent detracking by changing a limit current to be inputted to a moving means by a tracking control means in accordance with its frequency. CONSTITUTION:A signal to be inputted to the moving means 111 is limited to a limit value by the tracking control means 217, and also the limit value is changed by the frequency. That is, when noise is generated in a signal 203 due to dust or a flaw on a medium, a current to flow in a tracking coil 111 is limited to a low value because the frequency of this noise is relatively high. By this method, useless movement of the objective lens is diminished, and detracking is prevented. |
| Author | SHIKICHI SATOSHI |
| Author_xml | – fullname: SHIKICHI SATOSHI |
| BookMark | eNrjYmDJy89L5WQw8Q8I8XR29FHw9HPzD_J1DPH091MIcnX2D3Lx9HNXcPRzAfICgvxdQp1BfBfXME9nVx4G1rTEnOJUXijNzaDg5hri7KGbWpAfn1pckJicmpdaEu8V4GFgbGluaGTqaEyEEgCG6ykD |
| ContentType | Patent |
| DBID | EVB |
| DatabaseName | esp@cenet |
| DatabaseTitleList | |
| Database_xml | – sequence: 1 dbid: EVB name: esp@cenet url: http://worldwide.espacenet.com/singleLineSearch?locale=en_EP sourceTypes: Open Access Repository |
| DeliveryMethod | fulltext_linktorsrc |
| Discipline | Medicine Chemistry Sciences Physics |
| ExternalDocumentID | JPH0397125A |
| GroupedDBID | EVB |
| ID | FETCH-epo_espacenet_JPH0397125A3 |
| IEDL.DBID | EVB |
| IngestDate | Fri Jul 19 12:18:57 EDT 2024 |
| IsOpenAccess | true |
| IsPeerReviewed | false |
| IsScholarly | false |
| Language | English |
| LinkModel | DirectLink |
| MergedId | FETCHMERGED-epo_espacenet_JPH0397125A3 |
| Notes | Application Number: JP19890236314 |
| OpenAccessLink | https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19910423&DB=EPODOC&CC=JP&NR=H0397125A |
| ParticipantIDs | epo_espacenet_JPH0397125A |
| PublicationCentury | 1900 |
| PublicationDate | 19910423 |
| PublicationDateYYYYMMDD | 1991-04-23 |
| PublicationDate_xml | – month: 04 year: 1991 text: 19910423 day: 23 |
| PublicationDecade | 1990 |
| PublicationYear | 1991 |
| RelatedCompanies | CANON INC |
| RelatedCompanies_xml | – name: CANON INC |
| Score | 2.4110703 |
| Snippet | PURPOSE:To diminish useless movement of an objective lens and to prevent detracking by changing a limit current to be inputted to a moving means by a tracking... |
| SourceID | epo |
| SourceType | Open Access Repository |
| SubjectTerms | INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS |
| Title | OPTICAL INFORMATION RECORDING AND REPRODUCING DEVICE |
| URI | https://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19910423&DB=EPODOC&locale=&CC=JP&NR=H0397125A |
| hasFullText | 1 |
| inHoldings | 1 |
| isFullTextHit | |
| isPrint | |
| link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwfV1Lb8IwDLYYe962bmjspR6m3qoVkjJ6qCZIygpSH6oAcUNrm0pcChqd9vfnZIXtsh3tSJETyfli57MD8ChE4fS7TmbK9mgmJRk1U9IpzG5GCU3RoRwqC4WDsOfP6GRhLxqw2tXCqD6hn6o5InpUhv5eqfN685PE4opbuX1KV6hav4ymLjfyulysI2keBh-6XhzxiBmMuZPYCBPXtxB4EcwHB3CIt-hnyf7y5kNZlLL5jSijcziKcbKyuoCGKDU4ZbuP1zQ4Cer3bg2OFUEz26KydsLtJdAonsouBvo4xBAuUEkmPfEYhnPj8FUfhBylOIn4jEmZe_Mx865AH3lT5ptoyHK_6OUk3ptMWtAs16W4Bt0iRd7LCpqTnkXTTu7kdi76gtoWFQj2b21o_znNzT9jt3D2zYGiZpfcQbN6_xD3iLZV-qD26QvKSn9U |
| link.rule.ids | 230,309,783,888,25578,76884 |
| linkProvider | European Patent Office |
| linkToHtml | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwfV1Lb8IwDLYYe7DbxobGnj1MvVUrJCB6qCZIylpGH0IFcUNrm0pcChqd9vfnZMB22Y52pMiJ5HyxY38BeBQit3ptKzUkPZpBSUqNhLRyo51SQhN0KIvKRmE_6LpTOpp35hVY7nphFE_opyJHRI9K0d9LdV6vf5JYXNVWbp6SJapWz8PY5nq2bRdryTIPnQ9sJwp5yHTG7FGkBxPbNRF4Ecz7B3CIN-yepNl3ZgPZlLL-jSjDMziKcLKiPIeKKOpQY7uP1-pw4m_fu-twrAo00w0qt064uQAaRrFkMdC8AEM4XyWZtInDMJzzghetH3CUoknIp0zK3Jl5zLkEbejEzDXQkMV-0YtRtDeZNKBarApxBZpJ8qyb5jQjXZMmrczKOpnoCdoxqUCwf2tC889prv8Ze4CaG_vjxdgLXm_g9LseihptcgvV8v1D3CHylsm92rMv6j6CRA |
| openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.title=OPTICAL+INFORMATION+RECORDING+AND+REPRODUCING+DEVICE&rft.inventor=SHIKICHI+SATOSHI&rft.date=1991-04-23&rft.externalDBID=A&rft.externalDocID=JPH0397125A |