Writing and reading of data in probe-based data storage devices

Details Writing and reading of data in probe-based data storage devices Writing and reading of data in probe-based data storage devices

2007-08-14

2007-08-14

Ellis, Kevin L. (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Access timing

Reexamination Certificate

active

10945224

ABSTRACT:
Methods and apparatus are provided for controlling writing and reading of data in an array of A storage fields of a probe-based data storage device in which data is written to and read from the array of storage fields by a corresponding array of probes. One method uses the concept of sub-arrays to provide variable-rate read/write operation. Input data blocks are received for writing to the A-field array, each input data block being writable in A/k0storage fields where k0is an integer ≧2. For successive groups of k0blocks, the k0blocks are written to respective sub-arrays, each of A/k0storage fields, of the storage field array by selectively writing at one of a series of rates, ranging from 1 block at a time to k0blocks at a time, in dependence on a desired data write-rate. The blocks can also be read from the sub-arrays by selectively reading at one of a series of rates, ranging from 1 sub-array at a time to k0sub-arrays at a time, in dependence on a desired data read-rate.

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