Kroum Stoev, Yugang Wang, Francis Liu, Yingjian Chen, Xiaozhong Dang: Inductive transducer with recessed leading pole layer. Western Digital, Mark Lauer, Silicon Edge Law Group, April 20, 2004: US06724572 (163 worldwide citation)

In one aspect, an inductive transducer is disclosed having a leading pole layer and a leading pole tip, with the pole layer being further removed than the pole tip from a media-facing surface. In another aspect, an inductive transducer is disclosed having a magnetic pedestal disposed between a leadi ...

Kenneth E Knapp, Kyusik Sin: Narrow track width magnetoresistive sensor and method of making. Western Digital, Mark Lauer, March 2, 2004: US06700759 (161 worldwide citation)

An electrically conductive sidewall for an electromagnetic transducer having a magnetoresistive sensor is formed as a layer oriented substantially perpendicular to other layers of the sensor, and is used as a mask for defining the width of the sensor. This allows the sensor to be made much thinner t ...

Laurence B Boucher, Stephen E J Blightman, Peter K Craft, David A Higgen, Clive M Philbrick, Daryl D Starr: Obtaining a destination address so that a network interface device can write network data without headers directly into host memory. Alacritech, T Lester Wallace, Mark Lauer, Silicon Edge Law Group, June 29, 2004: US06757746 (160 worldwide citation)

A Network Interface device (NI device) coupled to a host computer receives a multi-packet message from a network (for example, the Internet) and DMAs the data portions of the various packets directly into a destination in application memory on the host computer. The address of the destination is det ...

Yingjian Chen, Xizeng Shi, Hugh Craig Hiner, Zi Wen Dong, Francis Liu, Matthew R Gibbons, Joyce Anne Thompson, William D Jensen, Chester Xiaowen Chien, Yugang Wang: Inductive transducer with stitched pole tip and pedestal defining zero throat height. Western Digital, Mark Lauer, Silicon Edge Law Group, April 13, 2004: US06721138 (159 worldwide citation)

An inductive transducer having first and second magnetic pedestals disposed between first and second magnetic pole layers and adjacent to a media-facing surface, the pedestals separated by a submicron, nonmagnetic gap. The first pedestal extends less than the second pedestal from the media-facing su ...

Stephen E J Blightman, Daryl D Starr, Clive M Philbrick: Network interface device for error detection using partial CRCS of variable length message portions. Alacritech, Mark Lauer, Silicon Edge Law Group, February 27, 2007: US07185266 (158 worldwide citation)

A device and method are disclosed for calculating a CRC on a message or block of data that has been divided into portions, by calculating a partial CRC corresponding to each of the portions and then combining the partial CRCs. The device and method are operable for portions that may have different l ...

Xiaozhong Dang, Yingjian Chen, Aiguo Feng: Method of making transducer with inorganic nonferromagnetic apex region. Western Digital, Mark Lauer, Silicon Edge Law Group, May 18, 2004: US06737281 (156 worldwide citation)

A method of making an inductive transducer having inorganic nonferromagnetic material disposed in an apex region adjacent to a submicron nonferromagnetic gap in a magnetic core. The inorganic nonferromagnetic apex region can be made by chemical etching of a layer of inorganic nonferromagnetic materi ...

James R Wiitala: Magnetoresistive read/write head with high-performance gap layers. Read Rite Corporation, Mark Lauer, February 13, 2001: US06188549 (154 worldwide citation)

High-performance amagnetic gap layers for electromagnetic transducers are thermally conductive and electrically insulative, as well as providing a dense amorphous surface for forming magnet resistive sensor elements. The amagnetic gap layers include nonmonocrystalline compounds of AIN, SiC, SiO

David J Seagle, Yugang Wang: Transducers for perpendicular recording with inductive cancellation at MR sensor. Western Digital, Mark Lauer, Silican Edge Law Group, June 22, 2004: US06754049 (154 worldwide citation)

Perpendicular recording and magnetoresistive sensing transducers are disclosed having additional coil windings carrying current in an opposite direction to windings encircled by a core. The magnetic influence of the recording transducer on the sense transducer is reduced or eliminated. The inductanc ...

Robert E Rottmayer, Jian Gang Zhu, Kyusik Sin, Ronald A Barr: Merged write head with magnetically isolated poletip. Read Rite Corporation, Mark Lauer, June 11, 2002: US06404601 (153 worldwide citation)

A magnetic head has an exchange isolated poletip located between a shield of an MR sensor and a write pole of an inductive sensor. The poletip is preferably made of high B

Muhammad A Hawwa, Edmund B Fanslau Jr: Enclosed piezoelectric microactuators coupled between head and suspension. Western Digital, Mark Lauer, Silicon Edge Law Group, October 19, 2004: US06807030 (153 worldwide citation)

An actuator is coupled between a head and flexure and gimbal elements, the actuator providing submicron positioning of the head while reducing undesirable vibrations of the flexure and gimbal elements. Such an actuator may have a frame that surrounds a cavity, the frame having an opening disposed ad ...