Inventor · Mountain View, CA, US

Michael Madden

66Patents
9h-index
23Co-inventors
78Inventor score

Filing activity: Aug 8, 2001 → Oct 4, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US7715135B1 Methods, circuits, apparatus, and systems for read channel synchronization and/or fly height measurement Physics 40 Active
US9311937B2 Systems and methods for calibrating read and write operations in two dimensional magnetic recording Physics 22 Active
US7158333B1 Up-sampled filtering for servo demodulation Physics 17 Expired
US8537482B1 Systems and methods for inter-track interference cancellation in magnetic recording channels Physics 16 Active
US7986487B1 Harmonic sensor Physics 13 Active
US8164846B1 Hybrid defect detection for recording channels Physics 12 Active
US7974034B1 Systems and methods for sync mark detection using correlation Physics 12 Active
US8049983B1 Methods and apparatus for performing interpolated timing recovery Physics 11 Active
US8339722B1 Methods of demodulating a servo positon error signal on patterned media Physics 9 Active
US9077501B1 Systems and methods for detecting cycle slip and/or framing error Electricity 8 Active
US7982990B1 Digital techniques to decode signals extracted from computer-readable storage media Physics 7 Active
US8730609B1 DC shift detection and correction Physics 6 Active
US8339720B1 Hybrid defect detection for recording channels Physics 5 Active
US8027114B1 Spiral servo detection with phase-locked loop (PLL) Physics 5 Active
US8279546B1 Systems and methods for sync mark detection using correlation Physics 4 Active
US7538967B1 Method and apparatus for estimating a position of a head in a disk drive Physics 4 Active
US8810938B1 Systems and methods for performing timing acquisition on an expected preamble of a read signal Physics 4 Active
US8154820B1 Harmonic sensor Physics 4 Active
US8964323B1 System and method for detecting and correcting shift in a DC level of an input signal Physics 3 Active
US8879185B1 Disk synchronous write architecture for bit-patterned recording Physics 3 Active
US8395858B1 Methods and apparatus for performing interpolated timing recovery Physics 3 Active
US8649120B1 Systems and methods for gain compensation and re-timing in magnetic recording channels Physics 3 Active
US8693118B1 Timing acquisition robust to inter-track-interference Physics 3 Active
US7974032B1 Non-linear transition shift identification and compensation Physics 3 Active
US8625218B1 ACQ in the presence of baseline pop Physics 2 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.