Abstract: A scanning projector system includes a controller, a driver and one or more micro-mirror(s). The controller produces first, second and third pixel data in dependence on a video signal. The driver drives first, second and third light emitting elements in dependence on the first, second and third pixel data, to thereby emit light of first, second and third colors. The micro-mirror(s) project an image in dependence on light beams produced in dependence on the light of the first, second and third colors. The controller controls intensities of the light emitted by the light emitting elements, at least in part, by controlling duty-cycles of pulses included in pixel periods associated with the first, second and third drive signals. To reduce color shifts, the controller and/or the driver causes at least two pulses to be included in each pixel period associated with drive signals used to drive the light emitting elements.

Abstract: The system and method creates a substantially constant output voltage ripple in a buck converter in discontinuous conduction mode by varying the on-time of a pulse width modulator (PWM) signal driving the buck converter when the buck converter is operating in discontinuous conduction mode. A first signal is generated that is a function of the switching frequency of the buck converter. This signal is low-pass filtered and compared with a second signal that is a function of the switching frequency of the buck converter when operating in continuous conduction mode and with constant PWM on-time. The output signal generated by the comparator is a signal that is equal to the ratio of the first signal and the second signal. The on-time of a voltage controlled oscillator is controlled by the output signal, the oscillator signal causing the on-time of the PWM signal to vary in a controlled fashion.

Abstract: Certain embodiments described herein relate to optical sensors including a light detector and including and/or for use with a light source, and methods for use with such optical sensors. Certain embodiments involve detecting an amount of ambient light that is incident on the light detector and producing ambient light detection data indicative thereof. Additionally, such embodiments involve detecting interference light and producing interference light detection data indicative thereof. Further, such embodiments can involve producing an ambient light compensation signal based on the ambient light detection data, producing an interference light compensation signal based on the interference light detection data, and detecting light of interest that is incident on the light detector and outputting proximity detection data indicative thereof. The light of interest is caused by light that reflects off an object that is external to the optical sensor and is within a sense region of the optical sensor.

Abstract: Embodiments described herein relate to a packaged component including a lead frame and a non-conductive plug disposed between two or more adjacent sections of the lead frame. The plug is composed of a non-conductive material functions to impede the flow of solder along edges of the two or more adjacent sections during second level solder reflow events that occur after encapsulation of the packaged component. The plug includes a main portion disposed within a space between the two or more adjacent sections, and one or more overlap portions extending from the main portion. The one or more overlap portions are disposed on an internal surface of at least one of the two or more adjacent sections. At least one component is mounted on one of the plurality of sections of the lead frame.

Abstract: Embodiments of the subject application provide for a circuit comprising: a lead frame having a first plurality of exposed terminals, the lead frame defining a plane; a laminate substrate in the plane defined by the lead frame, adjacent to the lead frame, and electrically coupled to the lead frame, the laminate substrate having a first surface including a second plurality of exposed terminals and a second surface opposite the first surface; a first one or more dies mounted on the lead frame and electrically coupled to the lead frame; and a second one or more dies mounted on the second surface of the laminate substrate and electrically coupled to the laminate substrate.

Abstract: A hysteretic current mode buck-boost voltage regulator including a buck-boost voltage converter, a switching controller, a window circuit, a ramp circuit, and a timing circuit. The timing circuit may be additional ramp circuits. The voltage converter is toggled between first and second switching states during a boost mode, is toggled between third and fourth switching states during a buck mode, and is sequentially cycled through each switching state during a buck-boost mode. The ramp circuit develops a ramp voltage that simulates current through the voltage converter, and switching is determined using the ramp voltage compared with window voltages provided by the window circuit. The window voltages establish frequency, and may be adjusted based on the input and output voltages. The timing circuit provides timing indications during the buck-boost mode to ensure that the second and fourth switching states have approximately the same duration to provide symmetry of the ramp signal.

Abstract: An embodiment of a circuit includes a circuit module and an inductor disposed over and electrically coupled to the module. Disposing the inductor over the module may reduce the area occupied by the circuit as compared to a circuit where the inductor is disposed adjacent to the module, or to a circuit where the inductor is disposed in the module adjacent to other components of the module. Furthermore, disposing the inductor outside of the module may allow one to install or replace the inductor.

Abstract: Video analytics systems and methods are described that typically comprise a video encoder operable to generate macroblock video analytics metadata (VAMD) from a video frame. Functional modules receive the VAMD and an encoded version of the video frame is configured to generate video analytics information related to the frame using the VAMD and the encoded video frame. The downstream decoder can use the VAMD to obtain a global motion vector related to the frame, detect and track motion of an object within the frame and monitor a line provided or found within the frame. Traversals of the line by a moving object can be detected and counted using information in the VAMD and the line may be part of a polygon that delineates an area to be monitored within the encoded frame. The VAMD can comprise macroblock level and video frame level information.

Abstract: An embodiment of a power supply includes an output node, inductively coupled phase paths, and a sensor circuit. The output node is configured to provide a regulated output signal, and the inductively coupled phase paths are each configured to provide a respective phase current to the output node. And the sensor circuit is configured to generate a sense signal that represents the phase current flowing through one of the phase paths. For example, because the phase paths are inductively coupled to one another, the sensor circuit takes into account the portions of the phase currents induced by the inductive couplings to generate a sense signal that more accurately represents the phase current through a single phase path as compared to conventional sensor circuits.

Abstract: A system, switching regulators, and methods of control for enhanced peak current-mode PWM switching regulators are disclosed. For example, a switching regulator is disclosed, which includes a master controller circuit and a slave controller circuit coupled to the master controller circuit, wherein the slave controller circuit is configured to generate a ripple current at a first ripple node, and a sensor circuit is configured to sense the ripple current at the first ripple node and convey the sensed ripple current to a second ripple node in the master controller circuit. In some implementations, the switching regulator is part of a power subsystem formed on one or more semiconductor ICs, wafers, chips or dies.

Abstract: Systems and methods for operating cameras are described. An image signal received from an image sensor can be processed as a plurality of video signals representative of the image signal. An encoder may combine baseband and digital video signals in an output signal for transmission over a cable. The video signals may include substantially isochronous baseband and digital video signals. The baseband video signal can comprise a standard definition analog video signal and the digital video signal may be frequency modulated before combining with the baseband video signal and/or transmitting wirelessly. The digital video signal may be a compressed high definition digital video signal. A decoder demodulates an upstream signal to obtain a control signal for controlling the position and orientation of the camera and content of the baseband and digital video signals.

Abstract: Optoelectronic devices (e.g., optical proximity sensors), methods for fabricating optoelectronic devices, and systems including optoelectronic devices, are described herein. An optoelectronic device includes a light detector die that includes a light detector sensor area. A light source die is attached to a portion of the light detector die that does not include the light detector sensor area. An opaque barrier is formed between the light detector sensor area and the light source die, and a light transmissive material encapsulates the light detector sensor area and the light source die. Rather than requiring a separate base substrate (e.g., a PCB substrate) to which are connected a light source die and a light detector die, the light source die is connected to the light detector die, such that the light detector die acts as the base for the finished optoelectronic device. This provides for cost reductions and reduces the total package footprint.

Abstract: Optoelectronic devices (e.g., optical proximity sensors), methods for fabricating optoelectronic devices, and systems including optoelectronic devices, are described herein. An optoelectronic device includes a light detector die that includes a light detector sensor area. A light source die is attached to a portion of the light detector die that does not include the light detector sensor area. An opaque barrier is formed between the light detector sensor area and the light source die, and a light transmissive material encapsulates the light detector sensor area and the light source die. Rather than requiring a separate base substrate (e.g., a PCB substrate) to which are connected a light source die and a light detector die, the light source die is connected to the light detector die, such that the light detector die acts as the base for the finished optoelectronic device. This provides for cost reductions and reduces the total package footprint.

Abstract: An embodiment of a charger may include an input, at least one switch having a first node coupled to a reference voltage, a current sensor coupled between the input and a second node of the at least one switch, an output coupled to a third node of the at least one switch, and a charge controller coupled to the input to determine an input voltage, to the current sensor to determine an input current and to control inputs of the at least one switch. The at least one switch may be responsive to control signals supplied by the charge controller to the control inputs thereof to control voltage and current at the output of the charger. The charge controller may be responsive to the input voltage and the input current to produce the control signals in a manner that maximizes electrical power drawn at the input.

Abstract: Certain embodiments described herein relate to optical sensors including a light detector and including and/or for use with a light source, and methods for use with such optical sensors. Certain embodiments involve detecting an amount of ambient light that is incident on the light detector and producing ambient light detection data indicative thereof. Additionally, such embodiments involve detecting interference light and producing interference light detection data indicative thereof. Further, such embodiments can involve producing an ambient light compensation signal based on the ambient light detection data, producing an interference light compensation signal based on the interference light detection data, and detecting light of interest that is incident on the light detector and outputting proximity detection data indicative thereof. The light of interest is caused by light that reflects off an object that is external to the optical sensor and is within a sense region of the optical sensor.

Abstract: A controller for controlling operation of a switching regulator including a modulator, a discontinuous conduction mode (DCM) controller, an audible DCM (ADCM) controller, and a sub-sonic discontinuous conduction mode (SBDCM) controller. The modulator generally operates in a continuous conduction mode. The DCM controller modifies operation to DCM during low loads. The ADCM controller detects when the switching frequency is less than a super-sonic frequency threshold and modifies operation to maintain the switching frequency at a super-sonic frequency level. The SBDCM controller detects a sub-sonic operating condition during ADCM operation and responsively inhibits operation of the ADCM mode controller to allow a SBDCM mode within a sub-sonic switching frequency range. The SBDCM operating mode allows for efficient connected standby operation. The SBDCM controller allows operation to return to other modes when the switching frequency increases above the sub-sonic level.

Abstract: Body contact layouts for semiconductor structures are disclosed. In at least one exemplary embodiment, a semiconductor structure comprises: a plurality of gates disposed on a semiconductor layer, each gate extending parallel to a y-axis in a coordinate space; a source region disposed between two of the plurality of gates; a plurality of body contacts disposed in each source region; and wherein a portion of each source region, adjacent to the gate, has a width extending parallel to the y-axis that is greater than the width of the source region parallel to the y-axis at a distance on an x-axis from the gate.

Abstract: Embodiments described herein relate to a packaged circuit including a lead frame having at least one recess pattern on an internal surface thereof. The at least one recess pattern includes a perimeter recess that defines a perimeter around one or more raised surfaces. The packaged circuit also includes a component having one or more terminals. One of the terminals is mounted to the one or more raised surfaces such that the terminal covers the perimeter recess, wherein the perimeter recess has a size and shape such that the recess is proximate a perimeter of the terminal. The packaged circuit also includes component attach adhesive between the single terminal of the component and the one or more raised surfaces of the lead frame.

Abstract: A DC to DC converter circuit includes circuitry for generating a PWM waveform signal at a phase node of a DC to DC converter responsive to an input voltage and a monitor monitored output voltage. The circuitry further includes a high side switching transistor connected between the input voltage and a phase node and a low side switching transistor connected between the phase node and ground. An output filter is connected to the circuitry for generating the PWM waveform signal. The output filter includes an inductor having a first side connected to the phase node and a second side connected to an output voltage node. Detection circuitry detects zero current crossings in the inductor responsive to a voltage across the high side switching transistor and a voltage across the low side switching transistor.

Abstract: An adaptive pulse positioning modulator including a sense circuit which provides a compensation signal indicative of output voltage error, a filter circuit having an input receiving the compensation signal and an output providing an adjust signal, a leading ramp circuit which provides a repetitive first leading edge ramp signal having a slope which is adjusted by the adjust signal, a comparator circuit which provides a first start trigger signal when the first leading edge ramp signal reaches the compensation signal and a first end trigger signal when a first trailing edge ramp signal reaches the compensation signal, a trailing ramp circuit which initiates ramping of the first trailing edge ramp signal when the first start trigger signal is provided, and a pulse control logic which asserts pulses on a PWM signal based on the trigger signals.