SERVO CONTROL CIRCUIT FOR DETECTING ANALYTES VIA NANOPARTICLE-LABELED SUBSTANCES WITH ELECTROMAGNETIC READ-WRITE HEADS
First Claim
1. A circuit for controlling a head module to detect antigens from a biosample track, the head module having a position-error-servo (PES) read sensor for reading servo-alignment marks along the biosample track, the circuit comprising:
- a processor for receiving position-error-servo signals from the PES read sensor;
an electromagnetic write head for magnetizing a plurality of nanoparticles labeling the antigens;
a magneto-resistive read sensor for detecting the antigens via the nanoparticles, the write head and the read sensor being part of the head module; and
a plurality of actuators coupled to the head module for controlling the motion of the head module based on the position-error-servo signals.
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Accused Products
Abstract
A circuit for controlling an electromagnetic head module to detect antigens on a biosample track comprising a processor for receiving position-error-servo signal from the PES read sensor, a write head for magnetizing nanoparticles attached to antigens, and a read sensor for detecting the nanoparticle-labeled antigens. The circuit may further comprise an X-axis actuator for controlling the head module in the direction perpendicular to the track and an Y-axis actuator coupled to the head module and the X-axis actuator for controlling the head module in the direction of the track. Target antigens are attached to the biosample track and nanoparticles via antibodies.
149 Citations
23 Claims
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1. A circuit for controlling a head module to detect antigens from a biosample track, the head module having a position-error-servo (PES) read sensor for reading servo-alignment marks along the biosample track, the circuit comprising:
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a processor for receiving position-error-servo signals from the PES read sensor; an electromagnetic write head for magnetizing a plurality of nanoparticles labeling the antigens; a magneto-resistive read sensor for detecting the antigens via the nanoparticles, the write head and the read sensor being part of the head module; and a plurality of actuators coupled to the head module for controlling the motion of the head module based on the position-error-servo signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for detecting nanoparticle-labeled antigens, comprising:
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a biosample track deposited on a magnetic tape media and having the nanoparticle-labeled antigens attached thereon; a head module having a position-error-servo (PES) read sensor for reading servo-alignment marks along the biosample track, an electromagnetic write head for writing to the tape media to magnetize the nanoparticles, and a magneto-resistive read sensor for reading the tape media to detect the antigens via the nanoparticles; and a circuit for controlling the head module, the circuit comprising a processor for receiving position-error-servo signals from the PES read sensor, an X-axis actuator for controlling the head module in the direction perpendicular to the track, and an Y-axis actuator for controlling the head module in the direction of the track. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification