Static information storage and retrieval – Interconnection arrangements
Patent
1995-03-28
1997-01-14
Dinh, Son
Static information storage and retrieval
Interconnection arrangements
365194, 365220, G11C 506, G11C 700
Patent
active
055946801
ABSTRACT:
A contactless parallel data transfer device which is miniature, highly densed, and highly reliable having a coil block consisting of a first coil group installed in a portable memory and a coil block consisting of a second coil group installed in a data server for transferring access data in parallel between the portable memory (memory card, etc.) and the data server by contactless coupling, wherein the opposite coils of the first and second coil blocks are held close and opposite to each other on a contactless basis, and a parallel pulse group which is transferred in parallel between the both coil blocks is divided at least into a first parallel pulse group consisting of the first number of bits and a second parallel pulse group consisting of the second number of bits, and the parallel transfer timings of the both parallel pulse groups are different from each other, and an induced signal to the neighboring coils of each opposite coil pair of the first and second coil blocks is negated in the opposite phase.
REFERENCES:
patent: 4962485 (1990-10-01), Kato et al.
patent: 5394367 (1995-02-01), Downs et al.
Hamamoto Nobuo
Kinebuti Yutaka
Nakagawa Kazunari
Ohkawa Takehiro
Ohtake Masatoshi
Dinh Son
Hitachi , Ltd.
Hitachi Maxell Ltd.
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