Apple Inc.

Agilent Technologies, Inc.

Keysight Technologies, Inc.

Andrew David Fernandez

Santiago Alban

Richard Lawrence Baer

Abhishek Dhanda

Moshe Laifenfeld

Dietrich Werner Vook

Robert Thomas Cutler

Gregory Guyomarc'h

Vamsi K Srikantam

Mark N Gamadia

David C Beard

Arathi S Bale

David Lee Gines

Jefferson B Burch

Bruce Hamilton

Kenneth D Poulton

Robert M R Neff

Yunfeng Li

Lawrence Dale Bennett

Ali Husain Y Sirohiwala

Deitrich Werner Vook

Nick Tutillaro

Dieterich Vook

Various embodiments disclosed herein include techniques for maintaining multiple cameras in focus on same objects and/or at same distances. In some examples, a subordinate camera may be configured to focus based on the focus of a primary camera. For instance, a focus relationship between the primary camera and the subordinate camera may be determined. The focus relationship may characterize the trajectory of the lens position of the subordinate camera with respect to the lens position of the primary camera. In various examples, the focus relationship may be updated.

Primary-subordinate camera focus based on lens position sensing

Methods and apparatus are disclosed for selecting a lens control mode for a camera in external magnetic fields or other types of non-magnetic interference. In embodiments, when the camera is activated, a test of a position sensor for the camera lens is performed by moving the camera lens through a range of positions and collecting values from the sensor. In embodiments, the sensor readings are analyzed to determine conditions such as (a) whether the sensor is saturated by an external magnetic field or non-magnetic interference, (b) whether the sensor's readings are within an error margin, and (c) whether a computed position offset for the sensor is valid. Based on the analysis, the camera is placed into a first control mode where movement of the lens is controlled using the position sensor, or a second control mode where lens movement is controlled without the position sensor.

Camera lens control during magnetic interference

Various embodiments disclosed herein include techniques for determining autofocus for a camera on a mobile device. In some instances, depth imaging is used to assist in determining a focus position for the camera through an autofocus process. For example, a determination of depth may be used to determine a focus position for the camera. In another example, the determination of depth may be used to assist another autofocus process.

Camera autofocus using time-of-flight assistance

A camera system may include one or more controllers to perform in-field monitoring of autofocus performance and instability mitigation. The controllers may monitor one or more parameters associated with adjustment of a relative position between a lens group and an image sensor and/or one or more images. The controllers may analyze the parameters and/or images to calculate various metrics. The controllers may evaluate the metrics with respect to corresponding thresholds. The controllers may detect, based at least in part of the evaluation the metrics, one or more instability events associated with controller performance degradation. In response to detecting the instability events, the controllers may perform one or more remedial actions to mitigate the controller performance degradation.

In-field monitoring of autofocus performance and instability mitigation in camera systems

Methods and apparatus for detecting and correcting for lens tilt in cameras. The common mode signal may be derived from autofocus position (AP) sensors and used as a measure of the autofocus position of the lens on the Z axis. The differential mode signal may also be derived from the AP sensor signals. The differential mode signal may indicate that the lens is or is not tilted, and if tilted may indicate the direction and magnitude of the tilt. The differential mode signal may be used to apply a tilt correction transform to image data based on the strength and direction of the signal. The differential mode signal may also be used to translate the lens on an axis orthogonal to the Z axis to partially correct for lens tilt to align the image plane with the photosensor.

Camera lens tilt detection and correction

Stand bracket

Target hanger

A method and system determine a location of a signal emitter. A plurality of sensors each receives a signal transmitted by the signal emitter. One of the received signals is processed to produce a template describing an estimate of the signal transmitted by the signal emitter. The template is cross-correlated with at least some of the signals received at the sensors. At least one cross-correlation feature is identified from each cross-correlation and the cross-correlation features are used to determine the location of the signal emitter.

Method and system for locating signal emitters using cross-correlation with a reconstructed waveform

A method is provided for processing a radio frequency (RF) signal output by a device under test (DUT), the RF signal having first comb lines in a predetermined first order. The method includes mixing and filtering the RF signal with a multi-tone local oscillator (LO) signal to provide an intermediate frequency (IF) signal having second comb lines corresponding to the first comb lines, where the mixing operation scrambles in frequency the first comb lines of the RF signal such that the second comb lines of the IF signal are in a second order different from the predetermined first order; digitizing the IF signal at a predetermined sampling rate; and descrambling the digitized IF signal with time domain signal processing such that the second comb lines of the digitized IF signal are arranged in the predetermined first order.

Signal processing for digital network analyzer

Growing community of inventors

San Jose, CA, United States of America

Andrew David Fernandez