James H Lauffenburger
Engineers at Rifle Cir, Colorado Springs, CO

8294672, Oct 23, 2012

Dec 12, 2006

11/609609

Sylvain Grosjean - Les Fins, FR
Michel Willemin - Prêles, CH
James Harold Lauffenburger - Colorado Springs CO, US
Gil Afriat - Colorado Springs CO, US
Kevin Scott Buescher - Colorado Springs CO, US
Lawrence Bieber - Colorado Springs CO, US

EM Microelectronic-Marin S.A. - Marin

G06F 3/033, G09G 5/08, H01S 3/13, H01S 3/00

345166, 372 2901, 372 2902, 372 3809

The invention concerns an optical pointing device comprising a coherent light source for illuminating a surface portion with radiation, a driver of the coherent light source for controlling coherent light emissions, a photodetector device responsive to radiation reflected from the illuminated surface portion, processing means for determining, based on the photodetector device response, a measurement of relative motion between the optical pointing device and the illuminated portion of the surface, wherein the coherent light source driver is a fault-tolerant driver comprising redundant power control means for limiting the output power of coherent light emissions.

4794470, Dec 27, 1988

Oct 9, 1986

6/916891

James H. Lauffenburger - Colorado Springs CO
George F. Denehy - Monument CO
Andre Novickis - Monument CO

Media Security Incorporated and Associates - Colorado Springs CO

G11B 1910, G11B 23033, G11B 23027, G08B 1324

360 69

A system for providing a security capability for an electronic information reproducing device mounted within a housing, such as a floppy disk mounted in a jacket or a tape in a 3480 tape cartridge, by attaching an electronic surveillance tag to an inner surface of the housing during its manufacture so that the electronic surveillance tag cannot be easily removed from within the floppy disk or 3480 tape cartridge without destroying it and is not visible from outside of the housing and an electronic drive means having an electronic circuit for detecting the presence or absence of an electric surveillance tag and generating a signal in response to such presence or absence.

6657487, Dec 2, 2003

Feb 5, 2001

09/777256

James Harold Lauffenburger - Colorado Springs CO
Kevin Scott Buescher - Colorado Springs CO

EM(US) Design, Inc - Colorado Springs CO

H03F 102

330 9, 330 51, 330124 R

An amplifier circuit ( ) having a rotating input stage has a switching network ( ) connected to an input ( ). A number of parallel transconductance gain stages ( ) are connected to the switching network ( ). An auto-zeroing circuit ( ) is connected to the switching network ( ). A second transconductance gain stage ( ) is connected to the parallel transconductance gain stages ( ).

6556078, Apr 29, 2003

Apr 30, 2001

09/845626

Kevin Scott Buescher - Colorado Springs CO
James Harold Lauffenburger - Colorado Springs CO

EM Micoelectronics-US, Inc - Colorado Springs CO

H03F 136

330 85, 330 69, 330253, 330303, 327552

A low-corner frequency high pass filter circuit ( ) includes an operational amplifier ( ). The operational amplifier ( ) has an inverting input ( ) and a non-inverting input ( ). A series capacitor ( ) has a first end connected to the non-inverting input ( ) of the operational amplifier ( ). A second end of the series capacitor ( ) is connected to an input signal ( ). A low gain amplifier ( ) has an input connected to an output ( ) of the operational amplifier ( ) and has an output ( ) connected to the non-inverting input ( ) of the operational amplifier ( ). The low gain amplifier ( ) performs the function of large value resistor.

6472942, Oct 29, 2002

Aug 21, 2000

09/642429

James Harold Lauffenburger - Colorado Springs CO
John William Arachtingi - Colorado Springs CO
Kevin Scott Buescher - Colorado Springs CO
Gil Afriat - Colorado Springs CO

EM (US) Design, Inc. - Colorado Springs CO

H03F 114

330292, 330307, 257528

A parasitically compensated resistor ( ) for integrated circuits includes a substrate ( ). A polysilicon resistor ( ) is formed in the substrate ( ). The polysilicon resistor ( ) has a first end connected to a first lead ( ) and a second end connected to a second lead ( ). A conductive layer ( ) is capacitively connected to the polysilicon resistor ( ).

6963059, Nov 8, 2005

Jul 1, 2003

10/609686

James Harold Lauffenburger - Colorado Springs CO, US
Gil Afriat - Colorado Springs CO, US
Robert R. Rotzoll - Green Mountain CO, US

EM Microelectronic-Marin SA - Marin

G01J001/32

250205, 250214 R

There is described an optical sensing device, a method for controlling operation of an optical sensing device comprising a light source for illuminating a surface portion with radiation, a photodetector device having at least one photosensitive element responsive to radiation reflected from the illuminated surface portion, and conversion means for integrating an output signal of said at least one photosensitive element over time during an integration period of variable duration, which duration depends on power of the light source and level of radiation reflected from the illuminated surface portion. The optical sensing device further comprises a regulating system for controlling power if the light source as a function of a comparison between a parameter representative of the evolution of the integration of the output signal of the said at least one photosensitive element and at least one reference value. Regulation is advantageously performed by timing the duration of the integration period or by determining the rate of evolution of the integrated signal, comparing this duration or rate of evolution with at least one reference value and controlling power of the light source as a function of the result of the comparison. There is also described an optical pointing device implementing the above regulation scheme as well as an optical sensing device exploiting this scheme so as to sense proximity of the illuminated surface portion with respect to the optical sensing device.

8013841, Sep 6, 2011

Jun 16, 2006

11/424747

Lawrence Bieber - Colorado Springs CO, US
Gil Afriat - Monument CO, US
James Harold Lauffenburger - Colorado Springs CO, US
Kevin Scott Buescher - Colorado Springs CO, US

EM Microelectronic-Marin S.A. - Marin

G09G 5/08

345166, 345156, 345175, 345179, 345158, 178 1809, 178 1905, 250221, 2502081

A method for detecting lift from a surface portion of an optical pointing device comprising a coherent light source, a photodetector device including an array of pixels, and extracting motion features including comparators with an adjustable offset value, the method comprising the steps of: (i) illuminating the surface portion with radiation by the coherent light source; (ii) detecting radiation patterns reflected from the illuminated surface portion with the photodetector device; (iii) comparing light intensity between neighbouring pixels in the detected radiation patterns; (iv) extracting motion features as a function of the result of the comparison; (v) counting the total number of motion features extracted; (vi) increasing or decreasing the comparator offset value when the total number of motion features increases or decreases; (vii) comparing the comparator offset value with an offset threshold; (viii) enabling detection of a lift condition if the comparator offset value is lower than the offset threshold.

8405613, Mar 26, 2013

Jun 16, 2006

11/424764

Lawrence Bieber - Colorado Springs CO, US
Michel Willemin - Prêles, CH
Gil Afriat - Monument CO, US
James Harlod Lauffenburger - Colorado Springs CO, US
Kevin Scott Buescher - Colorado Springs CO, US

EM Microelectronic-Marin SA - Marin

G06M 7/00

345166, 345175, 345156, 250221, 2505592, 2502081, 250557, 178 1809, 178 1905

A method for measuring relative motion between an illuminated portion of a surface and an optical sensing device comprising a coherent light source and a photodetector device comprising an array of pixels and comparators for extracting motion features. The method includes the steps (a)-(d). Step (a) includes illuminating with the coherent light source the surface portion at a determined flash rate. Step (b) includes detecting, using the array of pixels a speckled light intensity pattern of the illuminated portion of the surface for each flash. Step (c) includes extracting edge direction data of two different types from the detected speckled light intensity patterns. Step (d) includes measuring relative motion between the optical sensing device and the illuminated portion of the surface based on extracted edge direction data. The step of extracting edge direction data further includes a preliminary step of introducing a selecting factor, which promotes detection of one type of edge direction data rather than another type.

5586100, Dec 17, 1996

Oct 13, 1992

7/955618

James H. Lauffenburger - Colorado Springs CO
Steve S. Popovich - Colorado Springs CO

Literal Corporation - Bethel Park PA

G11B 700, G06F 1710

369124

An apparatus and method for filtering intersymbol interference from an information signal generated from a storage medium. This apparatus utilizes a delay line, gain devices, summing devices, and has specified transfer functions. Furthermore, this apparatus and method can make real time adjustments in order to maintain an optimal level of filtering.

2002010, Aug 8, 2002

Mar 8, 2002

10/093670

Kevin Buescher - Colorado Springs CO, US
James Lauffenburger - Colorado Springs CO, US
John Arachtingi - Colorado Springs CO, US

H03F003/08

330/308000

An amplifier circuit () for a photodetector includes a transconductance variable gain stage (). The transconductance variable gain stage () has an input () capable of connecting to the photodetector and an output (). A transconductance gain stage () has an input () connected to the output () of the transconductance variable gain stage (). A feedback resistor () is connected between an output () of the transconductance gain stage () and the input () of the transconductance gain stage ().