Digital audio tape for data storage

Article Abstract:

Digital audio tape (DAT) is the tape technology of choice for backup memory because of its superior storage capacity, compactness and high reliability. A DAT cassette can store 1.3Gbytes of data, can record for two hours and retrieves a large file in an average of 20 seconds; DAT storage technology has an error rate of one in 10(superscript 15) bits. Major computer applications will be: backup storage for hard disks, software distribution, data interchange and file retrieval. DAT drives are slightly larger than 3.5-inch floppy drives, and the expected cost in volume production will be about 1.5 times as much. At least 20 vendors are developing DAT products in Japan, North America and Europe in expectation of a large market. Details of DAT technology, including its error-management strategies, are described.

Industrial research, Technology, Data storage media, Research and Development, Back-Up Systems, Storage Media, Digital Audio Tape, DAT (Digital audiotape)

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Magnetic megabits

Article Abstract:

Technical improvements in recording densities are packing more data onto magnetic storage media. The advances are surpassing even the densities possible on optical disks. One new magnetic disk demonstrated by IBM can hold over twice the bit density of current optical recording. The race to increase data storage capacities is being spurred on by the more advanced computer applications and consumer electronics. The key component in the new high-density rigid-disk from the IBM Magnetic Recording Institute is the magnetoresistive head. Improvements in the materials that the magnetic media are made from are also increasing densities. A new signal-processing technique called partial-response, maximum-likelihood (PRML) is closing the gap between disk drives and tape recorders.

International Business Machines Corp., IBM, Digital signal processors, Memory management, Magnetic storage media, Signal processing, Magnetic Media, Storage Capacity, Enhancements, Digital Signal Processor

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You are there ... and in control

Article Abstract:

New techniques compress digital video data before it is processed and stored, reducing the data rate to a level where personal computers (PCs) can handle it with images and sound as realistic as analog television. Fully digital systems are programmed in innumerable ways and can access data at random, giving users complete interaction. Applications of digital interactive video (DVI) include training computer users, surrogate travel, and synthetic video. DVI technology uses CD-ROM for its storage medium, a standard PC as host, and a pixel processor as coprocessor. The DVI video display processor uses two chips: one processes images stored in memory and one displays those images.

Prerecorded records and tapes, Image processing, Data compression, Digital video, Video recordings, Video Systems, technical, CD-Interactive

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