Abstract: User equipment (UE) includes an architecture for handling femtocell fingerprints. The architecture may, as examples, maintain the validity and reliability of fingerprints and coordinate enhancement to existing fingerprints. The architecture also supports fingerprint creation, updating, and deletion.

Abstract: An electronic device may be provided that has a display. The display may produce stray light when producing images for a user. The electronic device may have an ambient light sensor for measuring ambient light levels. Ambient light data may be used in adjusting display brightness. The display may be periodically disabled to prevent the stray light from interfering with the ambient light sensor. An integrating analog-to-digital converter may be used in gathering sensor data from the ambient light sensor. Control circuitry may be configured to remove background signals from ambient light sensor data. The background signals may be associated with leakage current that arises due to offset voltages in an operational amplifier in the integrating analog-to-digital converter. The operational amplifier may have an analog autozeroing capability or control circuitry may be used to subtract background data from ambient light sensor data.

Abstract: A method of encoding is provided. The method includes generating transform coefficients corresponding to macroblocks of video data, at least in part using a transform unit. The method also includes calculating a visual quality importance index for each of the macroblocks, wherein the visual quality importance index reflects a relative importance of the respective macroblock to subjective image quality. The method further includes receiving initial quantization parameters for the macroblocks from a rate control unit; dynamically adjusting the quantization parameters based, at least in part, on the visual quality importance index; and quantizing the transform coefficients using the dynamically adjusted quantization parameters.

Abstract: User equipment (UE) obtains system information using a foreground or background process. The system information may include cell information that distinguishes femtocells from macrocells. Given this cell information, the UE may avoid tuning to or attempting to connect to cell types that the UE does not support. For instance, the UE may avoid connection attempts to femtocells, when the UE does not support femtocell connections.

Abstract: User equipment (UE) includes an architecture for handling femtocell fingerprints. The architecture may, as examples, maintain the validity and reliability of fingerprints and coordinate enhancement to existing fingerprints. The architecture also supports fingerprint creation, updating, and deletion.

Abstract: A total-sky lightning event observation system and method may include a photographing device, a housing, a temperature control device, a light shielding device, a control module, a power supply module, a corona current sensor, a data acquisition device, a GPS antenna, a GPS timing module and a processing unit. The photographing device can capture total-sky digital images and transmit the images directly to the processing unit. The processing unit consecutively acquire corona current via the data acquisition device and judges whether there exists thunderstorm activity within the observed range; if there exists thunderstorm activity, the light shielding device is opened so as to enter a lightning observation mode, and the light shielding device is closed after the observation is finished so as to protect the photographing device in non-thunderstorm weather.

Abstract: An electronic device may have a display with a brightness that is adjusted based on data gathered from one or more ambient light sensors (ALSs). In one suitable arrangement, an ALS may include a photodiode, a temperature sensor, a scaler, an analog-to-digital converter (ADC), and a subtractor. The subtractor may have a first input coupled to the photodiode via the ADC, a second input coupled to the temperature sensor via the scaler, and an output on which a leakage-compensated sensor output is provided. In another suitable arrangement, the ALS may include first and second photodiodes, a light blocking layer formed over the second photodiode, a scaler, and a subtractor. The subtractor may have a first input coupled to the first photodiode, a second input coupled to the second photodiode via the scaler, and an output on which a leakage-compensated sensor output is provided.

Abstract: A pneumatic vehicle tire of a radial type of construction is for heavy trucks and has a four-ply belt (3). Each belt ply (7, 8, 9, 10) contains steel cords as reinforcing elements which run parallel to one another in each belt ply. Not only are the angles (?, ?) that the steel cords in the second and third belt plies (8, 9) form with the circumferential direction (A-A) approximately equal, but also the angles (?, ?) that the steel cords in the first and fourth belt plies (7, 10) form with the circumferential direction (A-A) are likewise approximately equal.

Abstract: An electronic device may be provided that has a display. The display may produce stray light when producing images for a user. The electronic device may have an ambient light sensor for measuring ambient light levels. Ambient light data may be used in adjusting display brightness. The display may be periodically disabled to prevent the stray light from interfering with the ambient light sensor. An integrating analog-to-digital converter may be used in gathering sensor data from the ambient light sensor. Control circuitry may be configured to remove background signals from ambient light sensor data. The background signals may be associated with leakage current that arises due to offset voltages in an operational amplifier in the integrating analog-to-digital converter. The operational amplifier may have an analog autozeroing capability or control circuitry may be used to subtract background data from ambient light sensor data.

Abstract: An electronic device may have a display with a brightness that is adjusted based on ambient light data from one or more ambient light sensors. An ambient light sensor may include at least one silicon-based photosensor. The silicon-based photosensor may generate a corresponding raw sensor reading. Processing circuitry associated with the ambient light sensor may analyze the raw sensor reading to determine the type of light source that is present by comparing measurements from at least two different photosensors, by determining the color temperature of the light source, and/or by determining the modulation frequency of the light source. A compensation factor may then be selected by referring to a lookup table. The processing circuitry may compute a compensated sensor reading based on the raw sensor reading and the selected compensation factor. The brightness of the display may be adjusted based on the compensated sensor reading computed in this way.

Abstract: An electronic device may be provided with a proximity sensor. The proximity sensor may include a light source such as a light-emitting diode and a light detector such as a photodiode. The light-emitting diode may be driven with an alternating current drive signal so that alternating current light is produced. The alternating current light may reflect off of an external object and may be received by the photodiode. The photodiode may receive a direct current light signal associated with the presence of ambient light. The efficiency of the photodiode may be affected by the level of ambient light and the efficiency of the light-emitting diode may be affected by the temperature of the light-emitting diode. Ambient light correction circuitry and temperature correction circuitry may be used to ensure that proximity sensor readings are not adversely affected by changes in operating temperature and ambient lighting conditions.

Abstract: A configurable photo detector circuit comprises a photo detector array including a plurality of photo detectors coupled to a plurality of amplifiers. A method for programming a detection pattern of the configurable photo detector circuit comprises selecting a first detection pattern for the photo detector array, generating first signals to create the first selected detection pattern, and applying the first generated signals to the photo detector circuit to implement the first selected detection pattern.

Abstract: The present invention provides apparatus, kits and methods for assaying analytes using photoelectrochemical molecules as labels. Specifically, the present invention provides a method for assaying an analyte, comprising: a) contacting a sample suspected of containing an analyte with a reactant capable of binding and/or reacting with the analyte under suitable conditions to allow binding of analyte, if present in the sample, to the reactant; and b) assessing binding and/or reacting between the analyte and the reactant to determine presence and/or amount of analyte in the sample, wherein the reactant, analyte, or additional reactant or additional analyte or analyte analog is labeled with a photoelectrochemically active molecule.

Abstract: A total-sky lightning event observation system and method may include a photographing device, a housing, a temperature control device, a light shielding device, a control module, a power supply module, a corona current sensor, a data acquisition device, a GPS antenna, a GPS timing module and a processing unit. The photographing device can capture total-sky digital images and transmit the images directly to the processing unit. The processing unit consecutively acquire corona current via the data acquisition device and judges whether there exists thunderstorm activity within the observed range; if there exists thunderstorm activity, the light shielding device is opened so as to enter a lightning observation mode, and the light shielding device is closed after the observation is finished so as to protect the photographing device in non-thunderstorm weather.

Abstract: A photodetector includes one or more first photodiode regions that are covered by an optical filter configured to reject infrared (IR) light and that produce a first current (I1). The photodetector also includes one or more second photodiode regions that are covered by a light blocking material configured to reject visible and infrared light and that produce a second current (I2). The photodetector also includes one or more third photodiode regions that are not covered by the optical filter and are not covered by the light blocking material and that produce a third current (I3). Additionally, the photodetector includes circuitry configured to produce an output indicative of the first current (I1) or a scaled version of the first current (I1), minus the second current (I2) or a scaled version of the second current (I2), minus the third current (I3) or a scaled version of the third current (I3). The optical filter configured to reject IR light can be, e.g.

Abstract: Described herein are light sensors that primarily respond to visible light while suppressing infrared light. Also described herein are systems the incorporate such light sensors. Such a system can include a display, a light source to backlight the display and a controller to control the brightness of the light source based on feedback received from such light sensors. Described herein are also methods for controlling backlighting.

Abstract: Embodiments of the present invention generally relate to circuits, systems and methods that can be used to detect light beam misalignment, so that compensation for such misalignment can be performed. In accordance with an embodiment, a circuit includes a photo-detector (PD) having a plurality of electrically isolated PD segments. Additionally, the circuit has circuitry, including switches, configured to control how currents indicative of light detected by the plurality of electrically isolated PD segments are arithmetically combined. When the switches are in a first configuration, a signal produced by the circuitry is indicative of vertical light beam alignment. When the switches are in a second configuration, the signal produced by the circuitry is indicative of horizontal light beam alignment. The signals indicative of vertical light beam alignment and horizontal light beam alignment can be used detect light beam misalignment, so that compensation for such misalignment can be performed.

Abstract: A configurable photo detector circuit comprises a photo detector array including a plurality of photo detectors coupled to a plurality of amplifiers. A method for programming a detection pattern of the configurable photo detector circuit comprises selecting a first detection pattern for the photo detector array, generating first signals to create the first selected detection pattern, and applying the first generated signals to the photo detector circuit to implement the first selected detection pattern.

Abstract: An electronic device may have a display with a brightness that is adjusted based on ambient light data from multiple ambient light sensors. Sensors that are shadowed can be ignored. A touch sensor array in the display may have electrodes that overlap ambient light sensors. When a touch sensor signal indicates that an external object is covering one of the ambient light sensors, data from that ambient light sensor can be discarded. The ambient light sensors may include a primary ambient light sensor such as a human-eye-response ambient light sensor and may include an array of secondary ambient light sensors such as non-human-eye-response sensors. The secondary ambient light sensors may be formed on a display layer such as a thin-film-transistor layer and may be formed from thin-film materials. An algorithm may be used to dynamically calibrate non-human-eye-response ambient light sensors to the human-eye-response ambient light sensor.

Abstract: Embodiments of the present invention generally relate to circuits, systems and methods that can be used to detect light beam misalignment, so that compensation for such misalignment can be performed. In accordance with an embodiment, a circuit includes a photo-detector (PD) having a plurality of electrically isolated PD segments. Additionally, the circuit has circuitry, including switches, configured to control how currents indicative of light detected by the plurality of electrically isolated PD segments are arithmetically combined. When the switches are in a first configuration, a signal produced by the circuitry is indicative of vertical light beam alignment. When the switches are in a second configuration, the signal produced by the circuitry is indicative of horizontal light beam alignment. The signals indicative of vertical light beam alignment and horizontal light beam alignment can be used detect light beam misalignment, so that compensation for such misalignment can be performed.