Avago Technologies Ecbu IP (Singapore) Pte. Ltd.

Avago Technologies General IP (Singapore) Pte. Ltd.

Agilent Technologies, Inc.

Aptina Imaging Corporation

Avago Technologies General IP Pte, Ltd.

Avago Technologies Limited

Robert Elsheimer

Robert M Thelen

Brian James Misek

Myunghee Lee

Matthew Scott Abrams

Peter Henry Mahowald

Young Gon Kim

Stefano G Therisod

Zachary T Deitz

Mark Alan Anderson

Takashi Hidai

Miaobin Gao

Jesse Chin

Song Liu

Heng-ju Cheng

A method of capturing user control inputs for an electronic device comprises sampling an input measurement signal at a capacitive input sensor of the electronic device to capture user control inputs for operating the electronic device. Electromagnetic interference affecting the sampling or the input measurement signal is electronically neutralized.

Neutralizing electromagentic noise for a capacitive input device

A method of capturing user control inputs for an electronic device comprises sampling an input measurement signal at a capacitive input sensor of the electronic device to capture user control inputs for operating the electronic device. Electromagnetic interference affecting the sampling of the input measurement signal is electronically neutralized.

Neutralizing electromagnetic noise for a capacitive input device

A driver circuit for driving a light source of an optical pointing device includes a first transistor coupled to the light source. The driver circuit includes a controller coupled to the first transistor for monitoring a first current through the light source, comparing the first current to a reference current, and generating a control signal based on a result of the comparison, wherein the control signal causes the first transistor to change the first current.

Driver circuit for driving a light source of an optical pointing device

An imaging apparatus including a photo sensor array having an array of sensors is disclosed, each sensor having an active area and a support hardware area adjoining the active area. In the prior art, the support hardware area of each sensor adjoins the active area of the sensor in the same direction. In the present invention, a sensor array has an array of sensors where, for each sensor, the support hardware area adjoins the active area of the sensor in a direction that is radially away from center of the sensor array whereby at least one freed area is defined within the sensor array. One or more reference detectors can be fabricated in the freed areas. This design allows the imaging apparatus to gather better image statistics, overcome shortcomings of the prior art design, or both.

Photo-array layout for monitoring image statistics

Driver circuit that generates an output drive signal that can be used to drive a light source (e.g., a light emitting diode (LED)) is described. The driver circuit includes an output transistor that operates in either a saturation region or a triode region. The driver circuit employs feedback to generate an output drive signal (e.g., an output drive current) that is independent on the operating mode of the output transistor.

Driver circuit that employs feedback to enable operation of output transistor in triode region and saturation region

An integrated circuit cast on a single die having a plurality of receivers in a receiver region, a plurality of transmitters in a transmitter region, and a spatial separation region having a plurality of n-type and p-type subregions disposed on the single die to separate the transmitter region from the receiver region. The pn-junctions between the n-type and p-type subregions are reverse-biased thereby reducing or eliminating coupling of noise and crosstalk between the transmitter and receiver is reduced.

Integrated multichannel laser driver and photodetector receiver

A laser driver for generating drive waveforms that are suitable for driving a single VCSEL or an array of VCSELs. A digital controller is integrated into the laser driver and is utilized to initially program and selectively adjust during the operation of the driver one or more of the following VCSEL drive waveform parameters: (1) bias current, (2) modulation current, (3) negative peaking depth, and (4) negative peaking duration. The laser driver has an aging compensation mechanism for monitoring the age of the laser and for selectively adjusting the dc and ac parameters of the VCSEL drive waveform to compensate for the aging of the laser. The laser driver also has a temperature compensation mechanism for monitoring the temperature of the driver IC and selectively adjusting the dc and ac parameters of the VCSEL drive waveform to compensate for the changes in temperature.

Open-loop laser driver having an integrated digital controller

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Fort Collins, CO, United States of America

Robert Elsheimer