Inventor

Lawrence D. Engh

Inventor

Redwood City, CA, US

Overview

17→

Patents

1997–2007

Patent span

Physics

Primary field (CPC G)

Patents· 17 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Cprimary

G11CStatic stores52%

H03HImpedance networks, e.g. resonant circuits13%

G11BInformation storage based on relative movement between record carrier and transducer9%

H03MCoding9%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems4%

H03FAmplifiers4%

H03GControl of amplification4%

H04MTelephonic communication4%

PatentTitleYear

7,197,299'Multiple message multilevel analog signal recording and playback system containing configurable analog processing functions'2007 6,882,136'Variable impedance network for an integrated circuit potentiometer'2005 6,788,042'Variable impedance network for an integrated circuit potentiometer'2004 6,301,151'Adaptive programming method and apparatus for flash memory analog storage'2001 6,100,752'Method and apparatus for reducing power supply current surges in a charge pump using a delayed clock line'2000 6,081,603'Method and apparatus for automatic gain control using a linear limiter circuit with voltage controlled resistors as a variable element'2000 6,035,049'AC coupling and signal amplification using switched capacitors'2000 5,986,928'Method and apparatus for detecting the end of message recorded onto an array of memory elements'1999 5,963,462'Integrated circuit system for analog signal storing and recovery incorporating read while writing voltage program method'1999 5,959,876'Single or dual message multilevel analog signal recording and playback system containing independently controlled signal storage segments with externally selectable duration capability'1999 5,926,409'Method and apparatus for an adaptive ramp amplitude controller in nonvolatile memory application'1999 5,877,984'Method and apparatus for adjustment and control of an iterative method of recording analog signals with on chip selection of a voltage ramp amplitude'1999 5,859,803'Non-volatile circuit that disables failed devices'1999 5,754,470'Apparatus for programming a voltage within a storage element'1998 5,745,414'Integrated circuit system having reference cells for improving the reading of storage cells'1998 5,629,890'Integrated circuit system for analog signal storing and recovery incorporating read while writing voltage program method'1997 5,623,436'Method and apparatus for adjustment and control of an iterative method of recording analog signals with on-chip trimming techniques'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2001Patents assigned to INFORMATION STORAGE DEVICES (14)· patent assignee history

1997–2007Based in Redwood City, CA, US· patent location history

2004–2007Patents assigned to WINBOND ELECTRONICS CORP (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
INFORMATION STORAGE DEVICES	14	1997–2001
WINBOND ELECTRONICS CORP	3	2004–2007

Locations

Location	Patents	Span
Redwood City, California, US	17	1997–2007