Dynamic magnetic information storage or retrieval – General processing of a digital signal – Head amplifier circuit
Reexamination Certificate
2005-03-15
2005-03-15
Sniezek, Andrew L. (Department: 2651)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Head amplifier circuit
C360S065000, C360S068000, C360S053000, C360S281000, C360S281700
Reexamination Certificate
active
06867937
ABSTRACT:
The invention provides a signal transmission apparatus using a rotary transformer by which a wide bandwidth and a high transfer rate can be used without a significant increase of the cost. The signal transmission apparatus includes a transmission side circuit and a reception side circuit between which a rotary transformer is interposed. A passive element circuit including an inductance element is connected to an output stage of the rotary transformer in parallel to the transformer. The passive element circuit has an inductance value set substantially equal to or lower than an equivalent inductance value when the circuit of the rotary transformer side is viewed from the reception side circuit.
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patent: 4853800 (1989-08-01), Schulz
patent: 5455729 (1995-10-01), Nelson et al.
patent: 6198585 (2001-03-01), Higurashi et al.
patent: 6304397 (2001-10-01), Ozue et al.
patent: 04-341901 (1992-11-01), None
patent: 2000-322702 (2000-11-01), None
Figueroa Natalia
Sniezek Andrew L.
Sonnenschein Nath & Rosenthal LLP
Sony Corporation
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