Enhanced-performance floppy diskette subsystem
May 1, 2015. 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 ReferencesSolid state mass memory system compatible with rotating disc memory equipment Storage controller emulator providing transparent resource sharing in a computer system Method for reading/writing for a floppy disc drive with buffer memory Method and apparatus for positioning a read/write mechanism Disk drive controller system with enhanced communications interface Mode-selectable integrated disk drive for computer Micro-winchester disk drive having on-board segmented cache memory Dual interface for disk drives Removable cartridge disk drive with cartridge interlocking and spindle motor telescoping mechanisms Portable computer with automatic adaption to different device types on a standard port Patent #: 5535371 InventorsAssigneeApplicationNo. 432239 filed on 05/01/1995US Classes:703/23EMULATIONExaminersPrimary: Teska, Kevin J.Assistant: Dehlitsch-Moats, Nicole L. Attorney, Agent or FirmInternational ClassG06F 013/12AbstractAn enhanced-performance floppy diskette subsystem, which operates many times faster than a conventional floppy diskette subsystem, includes both an enhanced-performance floppy diskette drive and floppy diskette drive controller. The diskette drive rotates a floppy diskette two or more times faster than that of a conventional floppy diskette drive, and includes two separate and independent read/write ("R/W") channels. To provide enhanced-performance, the floppy diskette drive controller includes a DRAM cache that maintains an image of the data recorded on a floppy diskette present in the floppy diskette drive. Two separate and independent floppy disk drive controller channels respectively interface between the cache memory and the R/W channels included in the enhanced-performance floppy diskette drive. Operating in this way, both heads of the enhanced-performance floppy diskette drive concurrently record data from the cache onto a floppy diskette, or reproduce data from a floppy diskette for storage into the cache. To a computer program executed by a host microprocessor, the enhanced-performance floppy diskette mimics the operation of a conventional floppy diskette subsystem.Other References
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