Integrated read/write head for ferroelectric optical media
January 7, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethods and apparatus for recording electric signals Information writing method for an optical disc memory system utilizing a smectic chiral liquid crystal Method and apparatus for bistable optical information storage for erasable optical disks Photorefractive, erasable, compact laser disk Read/write optical memory Optical information reading apparatus with waveguide and diffraction grating Optical head with flying lens Optical recording system employing a solid immersion lens Optical disk reading and writing system having magnetic write head mounted on an air-bearing slider Optical phase adder InventorApplicationNo. 227095 filed on 01/07/1999US Classes:369/126, Electrical modification or sensing of storage medium (e.g., capacitive, resistive, electrostatic charge)369/275.2, Erasable, reversible or re-recordable369/283, Layered (e.g., permanent protective layer)369/288, Specified material430/270.11, Optical recording nonstructural layered product having a radiation sensitive composition layer claimed or solely disclosed as optically reorderable and optically machine readable430/435Using identified developerExaminersPrimary: Dinh, TanAssistant: Chu, Kim-Kwok International ClassesG11B 009/00G11B 007/24 AbstractAn integrated read/write head structure saves and retrieves saved data stored in storage locations on a ferroelectric optical storage medium. A first ultra-violet light source generates a single beam for exciting the electrons of a ferroelectric molecule of the optical storage medium. An induced electric field transducer orients the potential difference of the ferroelectric molecule during saving data. A second ultra-violet light source generates a single beam and a MOSFET transistor detects the electric fields from a ferroelectric molecule.Other References
Field of SearchHolographicSpecified material Erasable, reversible or re-recordable Electrical modification or sensing of storage medium (e.g., capacitive, resistive, electrostatic charge) Layered (e.g., permanent protective layer) Photoconductive and ferroelectric MATERIAL DESIGNED TO BE RESPONSIVE TO TEMPERATURE, LIGHT, MOISTURE, ETC. Using identified developer Optical recording nonstructural layered product having a radiation sensitive composition layer claimed or solely disclosed as optically reorderable and optically machine readable Having read-write layer of 100 per cent organic or organometallic composition or mixtures thereof Modulation of polarized light via modulating input signal Frequency modulation Recyclable Sandwich having photoconductor Spatial, phase or amplitude modulation Hardware for producing a hologram Electro-optic |
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