Abstract: A method of image processing includes capturing two frames of image data using a camera having a phase detection auto focus (PDAF) sensor, subtracting phase difference pixel data associated with the two frames of image data to produce residual phase difference values, detecting a region-of-interest change based on the residual phase differences values, and determining a focus for the PDAF camera sensor based on the detected region-of-interest change. The method may further include compressing the residual phase difference values, sending the compressed residual phase difference values to a processor, and reconstructing, with the processor, the phase difference pixel data from the compressed residual phase difference values.

Abstract: Techniques described herein, which may provide for a location determination of a mobile device, can also provide for the determination of a viewing direction of a user of the mobile device. In particular, a user can wear a head-mountable apparatus with one or more light sensors configured to detect light from one or more modulated light sources. Using this information, not only may a location of the head-mountable apparatus be determined, but also an orientation, which can enable a determination of an approximate direction the user is looking.

Abstract: Disclosed are methods and apparatuses for automatically setting reminders for appointments and events. In an aspect, an apparatus engages in a communication, processes and parses a language in the communication, determines whether the language contains any setting of an appointment or event based on the processing and parsing of the language, and sets reminders based on the determination that the language contains an appointment or an event.

Abstract: Methods, systems, computer-readable media, and apparatuses for improved camera flash are presented. In some embodiments, a method includes performing an autofocus technique on a scene to obtain an autofocus output. The method also includes obtaining an ambient light measurement of the scene. The method further includes adjusting a sensitivity of an image sensor based at least in part on the autofocus output and the ambient light measurement. The method additionally includes, after adjusting the light sensitivity of the image sensor, illuminating the scene using a pre-flash.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive extended access barring (EAB) information indicating whether the UE is subject to EAB. The UE may output an indication of whether the UE is subject to EAB based at least in part on receiving the EAB information. Numerous other aspects are provided.

Abstract: A method of image processing includes capturing two frames of image data using a camera having a phase detection auto focus (PDAF) sensor, subtracting phase difference pixel data associated with the two frames of image data to produce residual phase difference values, detecting a region-of-interest change based on the residual phase differences values, and determining a focus for the PDAF camera sensor based on the detected region-of-interest change. The method may further include compressing the residual phase difference values, sending the compressed residual phase difference values to a processor, and reconstructing, with the processor, the phase difference pixel data from the compressed residual phase difference values.

Abstract: Briefly, one particular example implementation is directed to an apparatus including a digital imager. In the particular example implementation, the image includes an array of pixels, in which at least some pixels are dedicated to measure light component signals, such as for an image, and at least other pixels are dedicated to measure Visible Light Communication (VLC) signals. It should be understood that the aforementioned particular implementation is merely an example and claimed subject matter is not necessarily limited to any particular aspect of this example implementation.

Abstract: Briefly, one particular example implementation is directed to an apparatus including a digital imager. The digital imager, in the example implementation, includes an array of pixels to capture an image frame. At least some pixels are to measure light component signals for an image and are also to measure Visible Light Communication (VLC) signals. Circuitry to crop an image frame of light signal measurements is included so that, for light signal measurements that remain after cropping, extraction of VLC signal measurements from light component signal measurements is able to be employed. It should be understood that the aforementioned implementation is merely an example implementation, and claimed subject matter is not necessarily limited to any particular aspect thereof.

Abstract: Methods, systems, and devices are described for processing Visual Light Communication (VLC) signals with a reduced number of pixels while maintaining a substantially complete field of view. One method may include receiving one or more VLC signals at an array of pixels and sampling their intensity. The sampling may comprise additively combining analog signals obtained from two or more pixels having like color to generate a plurality of combined VLC signal samples. The VLC signals may be decoded based on a plurality of the combined VLC signal samples.

Abstract: Methods and devices for camera initialization are disclosed. In some aspects, a device includes a first camera to capture one or more first image frames, a second camera to capture one or more second image frames, and a camera controller coupled to the first camera and the second camera. The camera controller is configured to initialize the first camera, to cause the second camera to capture one or more second image frames while initializing the first camera, to determine an initial capture setting for the first camera based on the one or more second image frames captured by the second camera, and to complete initialization of the first camera using the initial capture setting.

Abstract: Systems and methods for performing HDR imaging are described. Aspects of the disclosure may include a camera system that uses the same pixels to capture both short and long exposure pixel data to improve camera hardware efficiency and pixel efficiency, and to reduce power usage by the camera system. In some aspects, exposure of a plurality of pixels available in a device may be started. Pixel data from the plurality of pixels may be captured after a first time period has elapsed to obtain short exposure pixel data. Pixel data from the plurality of pixels may also be captured after a second time period, longer than the first time period, has elapsed to obtain long exposure pixel data. The short exposure pixel data and the long exposure pixel data may be processed to create HDR images and/or videos.

Abstract: An electronic device is described. The electronic device includes an image sensor that is configured to capture phase detection data for automatic focusing. The electronic device also includes an automatic focusing module that is configured to dynamically enable or disable transmission of the phase detection data from the image sensor. The automatic focusing module may be configured to enable transmission of the phase detection data from the image sensor in response to detecting a scene change.

Abstract: Disclosed are techniques for positioning a user equipment (UE). In an aspect, a location server receives a first propagation time measurement and a first plurality of OTDOA RSTD measurements from a first UE at a first time, receives a second propagation time measurement and a second plurality of OTDOA RSTD measurements from a second UE at a second time, determines at least one real-time difference between a pair of base stations based on the first and second propagation time measurements and the first and second pluralities of OTDOA RSTD measurements, wherein the pair of base stations is associated with the first and second pluralities of OTDOA RSTD measurements, receives a third plurality of OTDOA RSTD measurements from a third UE at a third time, and determines a position of the third UE based at least in part on the at least one real-time difference between the pair of base stations.

Abstract: Disclosed are techniques for determining a distance (or range) between a first wireless entity and a second wireless entity. In an aspect, the first wireless entity transmits a first positioning reference signaling (PRS) signal to the second wireless entity at a first time, where the first PRS signal is received by the second wireless entity at a second time, and receives a second PRS signal from the second wireless entity at a third time, where the second PRS signal is transmitted by the second wireless entity at a fourth time. The first wireless entity enables the distance to be determined by a location computing entity, for example, by a location server, based on the first, second, third, and fourth times. The first wireless entity may be a mobile device or a base station and the second wireless entity may be the other of the mobile device or base station.

Abstract: Techniques are disclosed for optimizing performance of positioning measurements. In an aspect, a wireless mobile device receives a positioning measurements request indicating a plurality of cells of a cellular network to be measured by the wireless mobile device, and, for each cell of the plurality of cells having an entry in a memory of the wireless mobile device: based on an indicator indicating that previous positioning measurements for the cell are valid, retrieves the previous positioning measurements for the cell from the memory of the wireless mobile device and sends the previous positioning measurements for the cell to the location server, and, based on the indicator indicating that the previous positioning measurements for the cell are not valid, performs new positioning measurements for the cell and sends the new positioning measurements for the cell to the location server.

Abstract: Disclosed herein are techniques for dynamically configuring an image sensor of a mobile device for visible light communication (VLC) to an operational mode based on the position of the image of a VLC source on the image sensor and the different regions of interest (ROIs) of different operational modes of the image sensor. The operational mode that the image sensor is configured to has the smallest ROI among ROIs of operational modes that include at least a portion of the image of the VLC source on the image sensor. Techniques disclosed herein can reduce the power consumption of the mobile device during VLC communication and improve the effective sampling rate of VLC signals by the image sensor.

Abstract: Techniques described herein, which may provide for a location determination of a mobile device, can also provide for the determination of a viewing direction of a user of the mobile device. In particular, a user can wear a head-mountable apparatus with one or more light sensors configured to detect light from one or more modulated light sources. Using this information, not only may a location of the head-mountable apparatus be determined, but also an orientation, which can enable a determination of an approximate direction the user is looking.

Abstract: A method of operating a device that includes an image sensor including a plurality of pixels includes: detecting visible light communication (VLC) signals with the image sensor; obtaining image data based on the VLC signals, the image data including a set of brightness components and possibly a set of chrominance components, and each brightness component of the set of brightness components being associated with a respective pixel of the plurality of pixels and (if available) each chrominance component of the set of chrominance components being associated with a respective pixel of the plurality of pixels; and decoding the set of brightness components to obtain information encoded in the VLC signals using a processor of the device without decoding, if available, the set of chrominance components.

Abstract: Disclosed are techniques for optimizing visual light communication (VLC) processing performed at a mobile device. In an aspect, an image sensor of the mobile device having a rolling shutter captures a plurality of lines of an image frame, an image signal processor (ISP) coupled to the image sensor writes each line of the plurality of lines of the image frame into a dual port memory as each line of the plurality of lines of the image frame is received from the image sensor, and, for each line of the plurality of lines of the image frame, a VLC decoder of the mobile device reads a first line of the plurality of lines of the image frame from the dual port memory while the ISP writes a second line of the plurality of lines of the image frame to the dual port memory.

Abstract: Embodiments disclosed facilitate power and resource utilization efficiencies in User Equipment (UE) during Visible Light Communication (VLC). VLC may be used for UE pose determination and may involve image frame capture at relatively high frame rates thereby increasing resource utilization including power consumption in UEs. Disclosed embodiments determine a motion state of the UE during a first time period where a first plurality of image frames with VLC signals from at least one VLC source are captured with an image sensor. In some embodiments, VLC related functionality on the UE may be selectively disabled based on at least one of the determined motion state, and/or the determined usage of the one or more image frames.