Avago Technologies Ecbu IP (singapore) Pte. Ltd.

Agilent Technologies, Inc.

Avago Technologies General IP (singapore) Pte. Ltd.

Micron Technology Incorporated

Other

Omnivision Technologies, Inc.

Synaptics Corporation

Aptina Imaging Corporation

Avago Technologies Ecbu IP Pte. Ltd.

Ramakrishna Kakarala

Izhak Baharav

Xuemei Zhang

Dietrich Werner Vook

Richard Lawrence Baer

Tong Xie

Michael John Brosnan

John Stewart Wenstrand

Vincent C Moyer

Roopinder Singh Grewal

Mark Melvin Butterworth

Annette Claire Grot

Charles D Hoke

Susan Hunter

Paul Lewis Corredoura

John H Stanback

David W Dolfi

Marshall T Depue

Jau-Jan Deng

Boyd Fowler

Paul Wickboldt

Dale W Schroeder

Todd Stephen Sachs

Gregory Douglas VanWiggeren

Alexander Caldwell Schneider

Guansong Liu

Stephan Hengstler

Marshall Thomas DePue

Yiyi Ren

Wenshou Chen

David Charles Feldmeier

Marcia Tsuchiya

Kio Kim

Bond Yu-Pong Ying

Russell M Iimura

Jonathan S Gibson

Bond Yu Pong Ying

A method includes capturing an image from a scene with an image sensor. The image sensor has a plurality of spectral pixels and a plurality of image pixels. The method also includes collecting gathered data from the spectral-imaging array based on the light received. The gathered data is separated into spectral pixel data and image pixel data. The spectral pixel data is provided by the spectral pixels and the image pixel data is provided by the image pixels. The method includes both generating spectral information of the image based on the spectral pixel data and generating image information of the image based on the image pixel data.

System and method for using an image sensor having image pixels and spectral pixels

A method and apparatus for embedding a digital watermark in image content that is not visible to the human eye is performed on single-sensor digital camera images (often called 'raw' images) from a pixel-array. The raw image is transformed to generate preprocessed image coefficients, a watermark message is encrypted using a first key; the encrypted watermark message is randomized using a second key to form a watermark; and the watermark is embedded in randomly selected preprocessed image coefficients.

Sensor watermarking on raw images

A fingerprint sensing apparatus with in-sensor fingerprint enrollment and verification. The sensing apparatus includes a fingerprint sensor configured to generate sensor data in response to user contact with a sensing region and a processing system operable in at least a first mode and a second mode. When operating in the first mode, the processing system is configured to detect a fingerprint of the user based on the sensor data. When operating in the second mode, the processing system is configured to process gesture inputs based on the sensor data. In some implementations, while operating in the second mode, the processing system may selectively authenticate the user based on the gesture inputs and enable the user to enroll or manage fingerprints on the sensing apparatus when the user is authenticated.

Fingerprint sensing apparatus with in-sensor fingerprint enrollment and verification

Embodiments of an apparatus are described. In one embodiment, the apparatus is an optical navigation circuit. In particular, the optical navigation circuit may be part of an optical navigation device. The optical navigation circuit includes an image sensor, dynamic reconfiguration logic, and a digital signal processor. The image sensor includes a pixel array to generate a plurality of electrical signals corresponding to incident light at the pixel array. The dynamic reconfiguration logic is coupled to the image sensor. The dynamic reconfiguration logic is configured to receive the plurality of electrical signals from the pixel array and to generate a plurality of reconfigured electrical signals based on the plurality of electrical signals from the pixel array. The digital signal processor is coupled to the dynamic reconfiguration logic. The digital signal processor is configured to receive the plurality of reconfigured electrical signals from the dynamic reconfiguration logic.

Dynamically reconfigurable pixel array for optical navigation

Two or more spatial filters are used in determining velocity based on speckle translation. A light source may be turned on, turned off, or both for a variable amount of time during operation. The velocity may then be determined with trend identification, correlation, recursive frequency estimation, or measurement bandwidth variation. A confidence level may also be calculated for the measured velocity, and the measured velocity reported or used only when the calculated confidence level meets or exceeds a given value.

Methods and systems for measuring speckle translation with spatial filters

An a data input system includes an encoded pad having position encoding and a data input device adapted to image a portion of the encoded pad to determine position and orientation of the data input device relative to the encoded pad. The encoding pad includes a plurality of correlation windows. Each correlation window includes a primary encoding marker in form of vertical line segment and a set of secondary encoding markers in form of diagonal line segments, at least one diagonal line segment intersecting the vertical line segment at an intersection angle. Spacing of the diagonal line segments encodes the X-axis position of the input device relative to the encoding pad. Intersection angle encodes the Y-axis position of the input device relative to the encoding pad. Angle of the primary encoding marker vertical line segment within the frame of the captured image encodes the angular orientation of the input device relative to the axes of the encoded pad.

System for determining pointer position, movement, and angle

An apparatus for controlling the position of a screen pointer includes an at least partially coherent light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a navigation sensor for generating digital images based on the reflected images, performing a movement computation based on the digital images, generating movement data based on the movement computation that is indicative of relative motion between the imaging surface and the apparatus, wherein the movement computation has a low sensitivity to effects in the digital images caused by particle contamination.

Apparatus for controlling the position of a screen pointer with low sensitivity to particle contamination

An optical imaging system with dynamic buffer management is described. Embodiments of the optical imaging system include an image sensor, a buffer, and a buffer mode controller. The image sensor includes a pixel array to read out a plurality of pixel lines for a frame of an image. The buffer is configured to store a plurality of buffer values corresponding to a plurality of pixel values for each of the pixel lines. The buffer mode controller is configured to dynamically switch between an accumulation mode and an averaging mode. The accumulation mode facilitates a computation of each buffer value according to a sum value of the corresponding pixel value and a corresponding previous buffer value. The averaging mode facilitates a computation of each buffer value according to an average value of a normalized value of the corresponding pixel value and the corresponding previous buffer value.

Buffer management for an adaptive buffer value using accumulation and averaging

Apparatus and method of optically detecting click events are described. Images of a contact surface are captured at respective capture times. The captured images are convolved with a two-dimensional circularly symmetric spatial bandpass filter to produce corresponding filtered images each including a set of pixels with respective pixel value magnitudes. Based on the pixel value magnitudes of the corresponding filtered images, each of the capture times is assigned to one of an in-contact time class during which the contact surface is determined to be in-contact with a user's finger and an out-of-contact time class during which the contact surface is determined to be out-of-contact with the user's finger. A select signal indicating that the contact surface has been touched to make a selection is generated based on a click event predicate defining at least one condition on the time classes respectively assigned to successive ones of the capture times.

Optically detecting click events

A system, method, and device for tracking motion across a surface by creating an interference pattern by reflecting light from the surface. There is produced, as a result of sensor moving across the surface, at least one signal pattern corresponding to a detection of a dimension of the interference pattern. This detected dimension is associated with an assumed dimensional value to determine a distance traveled by the sensor.

Tracking motion using an interference pattern

An apparatus for controlling the position of a screen pointer includes a light source for illuminating an imaging surface, thereby generating reflected images. The apparatus includes a navigation sensor for generating digital images based on the reflected images, detecting defective pixel locations in the digital images, and generating movement data based on the digital images that is indicative of relative motion between the imaging surface and the apparatus.

Apparatus for controlling the position of a screen pointer that detects defective pixels

A technique for adapting an optical navigation device for navigation on a transparent structure such as a glass plate involves establishing a navigation window for navigation tracking, detecting reflected light within the navigation window, generating an output signal in response to the detected light, and adjusting a characteristic of the navigation window in response to the output signal. An optical navigation device includes an illumination system configured to output light, an image sensor configured to generate an output signal related to a detected portion of the light, and a transparent structure adapter module configured to adjust a navigation window of the image sensor in response to the output signal to adapt the optical navigation device for use directly on an opaque surface or for use on a transparent structure that is located between the optical navigation device and the opaque surface.

Optical navigation device adapted for navigation on a transparent structure

A digital image sensor comprising an array of pixels and a processor is provided. The array of pixels comprises a current pixel in a first color plane that is configured to produce a current sensor value, a first plurality of pixels in the first color plane that is configured to produce a first plurality of sensor values, and a second plurality of pixels in the second color plane that is configured to produce a second plurality of sensor values. The processor is configured to generate a plurality of estimate values using the first plurality of sensor values and a plurality of intensity ratios associated with the second plurality of sensor values, and the processor is configured to determine whether the current pixel is defective using the plurality of estimate values and the current sensor value.

System and method for detecting and correcting defective pixels in a digital image sensor

Growing community of inventors

Santa Clara, CA, United States of America

Ramakrishna Kakarala