Patent
Opto-magnetic memory
Jonge Frederik Ate De Dr
- 07 Nov 1972
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TL;DR: In this paper, the authors describe a device for the magnetic storage of data which comprises a plate of a magnetizable material having a periodic structure of magnetic domains, which occurs with an external magnetic field having a value at which two types of magnetic domain having different sizes can occur.
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Abstract: A device for the magnetic storage of data which comprises a plate of a magnetizable material having a periodic structure of magnetic domains. Recording data occurs with an external magnetic field having a value at which 2 types of magnetic domains having different sizes can occur. The size of a magnetic domain can be varied by selective irradiation with light.
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Citations
Patent
Method and apparatus for encoding and direct overwriting of magneto-optic data
Ulrich G. Gerber,Daniel Rugar +1 more
- 20 Mar 1987
TL;DR: In this paper, a direct overwrite of data on magneto-optic medium is described, where old data is erased and new data is written during a single rotation of the media in a data storage system which includes a resonant coil for producing a high frequency alternating magnetic field interacting with laser pulses having a duration equal to a small fraction of the period of the magnetic field.
27
Patent
Systems using lattice arrays of interactive elements
Bertram A Calhoun,John C. Slonczewski,Otto Voegeli +2 more
- 14 Nov 1975
TL;DR: In this article, a lattice array of interactive elements is used for storage of information, and reading devices are provided to detect the information state of the interactive elements when these elements are coded.
13
Patent
Wall topology storage system
Otto Voegeli
- 26 Mar 1973
TL;DR: In this article, the authors propose a wall topology storage system where information in the form of data bits is stored as polarity reversals in magnetic domain walls separating adjacent magnetic domains.
9
Patent
Magnetic bubble domain pump shift register
Laurence L Rosier
- 02 Jan 1974
TL;DR: In this paper, a pump means associated with a confinement means produces a magnetic field to expand some of the bubble domains within the confinement means, which can be used under many bias field conditions.
9
Patent
Single wall domain latrix for optical data processing system
Marlin Marshall Hanson,Ernest J. Torok +1 more
- 11 Aug 1975
TL;DR: In this paper, a light accessable transistor matrix (latrix) is configured into an holographic memory system, which is comprised of a magnetizable layer having orthogonal sets of D parallel digit lines and W parallel word lines, the intersections of which form DW memory areas.
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References
Patent
Magnetic domain store
F Dejonge
- 06 Nov 1972
TL;DR: In this article, the displacement of a domain from a first position to a second position, or vice versa, is effected under the influence of a thermal-energy carrying beam, which can be positioned on at least one of the bit locations at a time.
9
Patent
Single wall domain generator
Geusic J
- 15 Jan 1974
TL;DR: The number of magnetic bubbles generated thermally by a pulsed laser beam has been found to be a function of the diameter of the beam leading to a useful bubble generator.
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