| |
 |
|
Class Information
Number: 360/46
Name: Dynamic magnetic information storage or retrieval > General processing of a digital signal > Head amplifier circuit
Description: Subject matter including circuitry proximate to the recording transducer for producing sufficient current in response to an input signal to properly polarize the record.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619843 |
Write through drivers for disk drive systems |
Nov. 17, 2009 |
| 7619841 |
Disk drive subtracting low frequency disturbance from a servo burst signal |
Nov. 17, 2009 |
| 7609470 |
Information storage device, write current adjustment method for the information storage device, and write control circuit |
Oct. 27, 2009 |
| 7605995 |
Servo writer, signal output control method and manufacturing method of magnetic tape using the signal output control method |
Oct. 20, 2009 |
| 7595949 |
Method for active cancellation of write-to-read crosstalk |
Sep. 29, 2009 |
| 7589927 |
Dynamically adapting a read channel equalizer |
Sep. 15, 2009 |
| 7587538 |
Disk controller, channel interface and methods for use therewith |
Sep. 8, 2009 |
| 7586706 |
Method for checking the quality of servo gray codes |
Sep. 8, 2009 |
| 7576935 |
Apparatus for recording and regenerating data |
Aug. 18, 2009 |
| 7575820 |
System and method for controlling write to minimize ATI and squeeze effects |
Aug. 18, 2009 |
| 7573665 |
Magnetic tape read channel signal values developed employing intermediate bits of the path memory of a PRML Viterbi detector |
Aug. 11, 2009 |
| 7573331 |
Low power low noise amplifier for a magnetoresistive sensor |
Aug. 11, 2009 |
| 7567399 |
Signal processing method, signal processing circuit and information recording/regenerating apparatus |
Jul. 28, 2009 |
| 7564638 |
Preamplifier circuit and method for a disk drive device |
Jul. 21, 2009 |
| 7561358 |
Multi-register read channel optimization |
Jul. 14, 2009 |
| 7551384 |
Systems and methods for calibrating a read/write channel of a hard disk drive |
Jun. 23, 2009 |
| 7548389 |
Asymmetry correction in read signal |
Jun. 16, 2009 |
| 7532427 |
TMR/GMR amplifier with input current compensation |
May. 12, 2009 |
| 7529053 |
TMR/GMR amplifier with input current compensation |
May. 5, 2009 |
| 7525747 |
Data storage device, data storage control circuit, and control method for magnetic disk drive |
Apr. 28, 2009 |
| 7525746 |
DC-offset compensation loops for magnetic recording system |
Apr. 28, 2009 |
| 7518813 |
Methods and structure for detecting anomalous events in a disk drive using VGA variance |
Apr. 14, 2009 |
| 7515371 |
Channel postamble extension to de-gauss pole tips |
Apr. 7, 2009 |
| 7512865 |
Method for controlling read velocity in a disk device |
Mar. 31, 2009 |
| 7511910 |
Asymmetry correction in read signal |
Mar. 31, 2009 |
| 7508613 |
Method and apparatus for balanced shield shunts, leads and pads for electrical noise reduction in read heads |
Mar. 24, 2009 |
| 7502189 |
Apparatus, signal-processing circuit and device for magnetic recording system |
Mar. 10, 2009 |
| 7495854 |
Dynamic method for asymmetry compensation in a storage read channel |
Feb. 24, 2009 |
| 7483230 |
Write-current control chip and magnetic disk drive using the same |
Jan. 27, 2009 |
| 7477467 |
Preamp circuit including a loopback mode for data storage |
Jan. 13, 2009 |
| 7460324 |
Head amplifier circuit with function for degaussing residual magnetism of recording head |
Dec. 2, 2008 |
| 7457355 |
Method for an equalizer computation in a media system using a data set separator sequence |
Nov. 25, 2008 |
| 7450326 |
Method to determine temperature dependent write pre-compensation in a hard disk drive |
Nov. 11, 2008 |
| 7446966 |
Method for precompensation/write-current latching to improve error rate |
Nov. 4, 2008 |
| 7446685 |
Read signal processing circuit, read signal processing method, and optical disc drive |
Nov. 4, 2008 |
| 7440209 |
Communications channel with programmable coupling |
Oct. 21, 2008 |
| 7436615 |
Using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal |
Oct. 14, 2008 |
| 7436609 |
Apparatus method and system for concurrent gain control in a magnetic read channel |
Oct. 14, 2008 |
| 7433142 |
Using at least one servo channel to provide timing recovery and timing information to data channels |
Oct. 7, 2008 |
| 7430089 |
Data storage device and write processing method for data storage device |
Sep. 30, 2008 |
| 7430085 |
Disk device and method of generating signal representing head |
Sep. 30, 2008 |
| 7430084 |
Magnetic tape read channel signal values developed employing intermediate bits of the path memory of a PRML viterbi detector |
Sep. 30, 2008 |
| 7428116 |
Method for a cyclic dibit response estimation in a media system using a data set separator sequence |
Sep. 23, 2008 |
| 7423827 |
Systems and methods for accessing data from a variable polarity head assembly |
Sep. 9, 2008 |
| 7423826 |
Readback system providing a combined sample output including multiple samples per bit |
Sep. 9, 2008 |
| 7421021 |
Adaptive signal equalizer with adaptive error timing and precursor/postcursor configuration control |
Sep. 2, 2008 |
| 7417818 |
Magnetic recording device |
Aug. 26, 2008 |
| 7417817 |
Write driver circuit for magnetic data storage systems |
Aug. 26, 2008 |
| 7414804 |
TMR/GMR amplifier with input current compensation |
Aug. 19, 2008 |
| 7411756 |
Method and apparatus for write head demagnetization |
Aug. 12, 2008 |
|
|
|
