Memory system

Details Memory system Memory system

2006-05-31

2008-08-26

Mai, Son L (Department: 2827)

Static information storage and retrieval

Interconnection arrangements

Optical

C365S063000, C398S135000

Reexamination Certificate

active

07417884

ABSTRACT:
A memory controller multiplexes access signals each consisting of a plurality of bits as optical signals and outputs the multiplexed optical signals. At this time, the optical signals whose wavelengths differ depending on memory devices are generated. A memory interface unit demultiplexes the multiplexed optical signals into the original optical signals and converts the demultiplexed optical signals into electrical signals. The memory interface unit determines to which of the memory devices the electrical signals resulting from the conversion should be outputted, according to the wavelengths of the demultiplexed optical signals. This frees the memory controller from a need for transmitting to the memory interface unit a signal for identifying the memory device. The memory interface unit need not include a decoding circuit for identifying the memory device.

REFERENCES:
patent: 7106611 (2006-09-01), Lee et al.
patent: 7200024 (2007-04-01), Taylor
patent: 2002/0178319 (2002-11-01), Sanchez-Olea
patent: 2003/0043426 (2003-03-01), Baker et al.
patent: 2007/0147846 (2007-06-01), Epitaux et al.
patent: 2007/0230231 (2007-10-01), Ogawa et al.
patent: 2005-064950 (2005-03-01), None

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