Method and system for reducing radiated emissions from a communications channel
Granted: February 2, 2016
Patent Number:
9252983
A communications channel may radiate energy undesirably, for example in the form of electromagnetic radiation, when a communication signal transmits over the communications channel. Processing the signal before and after transmission on the communications channel can reduce the level of radiated energy. Signal processing in advance of transmission over the communications channel can transform the communication signal into a waveform that has a reduced propensity to emit radiated energy…
Power over coaxial cable
Granted: February 2, 2016
Patent Number:
9252842
An image communication system includes a coaxial cable having first and second ends. A monitor station is coupled to the first end and a camera is coupled to the second end. The monitor station provides power to the camera through the cable, while the cable is also used to carry communication signals transmitted by the camera to the monitor station. The image communication system includes a first active inductor coupled to the first end and a second active inductor coupled to the second…
Sigma-delta converter system and method
Granted: February 2, 2016
Patent Number:
9252801
A sigma-delta converter may include a filter coupled to a first summation circuit and a second summation circuit. A multi bit quantizer may be coupled to the second summation circuit. A single bit digital-to-analog converter (DAC) may be included that defines a feedback path between the multi-bit quantizer and the first summation circuit. A feed-forward coefficient circuit defining a feed forward path between the first summation circuit and the second summation circuit may be included.
Application specific power controller configuration technique
Granted: February 2, 2016
Patent Number:
9252773
Configuring the operational behavior of an integrated circuit. The integrated circuit (IC) comprises a plurality of configuration inputs for configuring the IC. The IC also has a memory which stores a plurality of sets of parameter values. Each parameter value of the respective set corresponds to a different operational parameter of a plurality of operational parameters. The IC includes logic which determines a first plurality of configuration values corresponding to the first plurality…
Optical proximity detectors
Granted: February 2, 2016
Patent Number:
9250714
Described herein are optical proximity detectors, methods for use therewith, and systems including an optical proximity detector. Such optical proximity detectors include an analog front-end and a digital back-end. In certain embodiments, the digital back-end includes a dynamic gain and phase offset corrector, a cross-talk corrector, a phase and magnitude calculator, and a static phase offset corrector. The dynamic gain and phase offset corrector corrects for dynamic variations in gain…
Battery charge modulator with boost capability
Granted: January 26, 2016
Patent Number:
9246348
A system and method for controlling a converter of a power stage receiving an adapter current for providing current to a load. The converter is operative in a buck mode for charging a battery and in a boost mode for discharging the battery to the load to supplement adapter current. The adapter current is compared with a predetermined level to develop a control signal, and at least one pulse control signal is developed based on the control signal and used to control the modulator. The…
Current ramping during multiphase current regulation
Granted: January 26, 2016
Patent Number:
9244473
Voltage regulators in a current share arrangement may provide a total current to a common load, and may be simultaneously turned on to ramp up member currents. Each voltage regulator may provide a respective member current in the current share configuration. A target current value may be determined from a cycle-averaged current value of the member currents and a voltage error value of the voltage regulator, and each member current may be ramped to the target current value instead of the…
VC-2 decoding using parallel decoding paths
Granted: January 19, 2016
Patent Number:
9241163
Methods, devices and systems that perform VC-2 decoding are disclosed. In an embodiment, a VC-2 decoder includes three parallel data paths including top-band, current-band and bottom-band data paths. The top-band data path performs variable length decoding (VLD), inverse-quantization (IQ) and inverse-DC-prediction (IDCP) processing of a top compressed data-band. The current-band data path performs VLD, IQ and IDCP processing of a current compressed data-band. The bottom-band data path…
Discrete multi-tone systems for half-duplex IP links
Granted: January 12, 2016
Patent Number:
9237053
A DMT system for a half-duplex two-way link carries Internet protocol encoded video stream on a coaxial cable that also carries a baseband rendition of the same video stream. A plurality of downlink symbols modulated on a subband of subcarriers in a downlink signal are decoded. The symbols may carry data encoded on a subband using a constellation of QAM symbols assigned to the subband. Other subbands may be associated with different QAM constellations. Lower-order constellations of QAM…
Methods and systems for noise and interference cancellation
Granted: January 5, 2016
Patent Number:
9231712
Signals propagating from an aggressor communication channel can cause detrimental interference in a victim communication channel. One or more noise cancellers can generate an interference compensation signal to suppress or cancel the interference based on one or more settings. A controller can execute algorithms to find preferred settings for the noise canceller(s). The controller can use a feedback signal (e.g., receive signal quality indicator) received from a victim receiver during…
Battery charge system and method capable of operating in different configurations
Granted: December 22, 2015
Patent Number:
9218043
A controller configurable to operate in either in an NVDC mode or a standard mode. The controller includes mode logic that detects a mode value indicative of the selected mode and that asserts a corresponding mode signal, and control logic that is configured to operate according to the selected battery charging mode based on the mode signal and that provides a control signal accordingly. In the standard mode, the control signal is in either an on or off state depending upon presence of…
Single die output power stage using trench-gate low-side and LDMOS high-side MOSFETS, structure and method
Granted: December 8, 2015
Patent Number:
9209173
A voltage converter includes an output circuit having a high-side device and a low-side device which can be formed on a single die (a “PowerDie”). The high-side device can include a lateral diffused metal oxide semiconductor (LDMOS) while the low-side device can include a trench-gate vertical diffused metal oxide semiconductor (VDMOS). The voltage converter can further include a controller circuit on a different die which can be electrically coupled to, and co-packaged with the…
PMOS depletable drain extension made from NMOS dual depletable drain extensions
Granted: November 24, 2015
Patent Number:
RE45814
In accordance with an embodiment of the invention, there is an integrated circuit device having a complementary integrated circuit structure comprising a first MOS device. The first MOS device comprises a source doped to a first conductivity type, a drain extension doped to the first conductivity type separated from the source by a gate, and an extension region doped to a second conductivity type underlying at least a portion of the drain extension adjacent to the gate. The integrated…
Dual use delay capacitor
Granted: November 17, 2015
Patent Number:
9191008
An integrated circuit comprises a control input providing a connection to a capacitor. A delay circuit generates a delayed enable signal responsive to a provided enable signal. A second circuit performs a control function. A switching circuit responsive to the delayed enable signal connects the control input to the delay circuit in a first mode of operation and connects the control input to the second circuit in a second mode of operation.
System and method of equivalent series inductance cancellation
Granted: November 17, 2015
Patent Number:
9190907
An equivalent series inductance (ESL) cancel circuit for a regulator for adjusting a feedback voltage by attenuating a magnitude of a square wave ripple voltage developed on an output voltage. The regulator includes an output inductor and an output capacitor, in which the capacitor has an ESL which forms an inductive voltage divider with the output inductor causing the square wave voltage ripple. The ESL cancel circuit may include first and second current sources and a resistor device…
Solder flow-impeding plug on a lead frame
Granted: November 3, 2015
Patent Number:
9177896
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 and is adhered to the two or more adjacent sections of the lead frame. The plug 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.…
Semiconductor structure for enhanced ESD protection
Granted: October 27, 2015
Patent Number:
9171833
A semiconductor structure for enhanced ESD protection is disclosed. The semiconductor structure includes a plurality of fingers, wherein each finger of the plurality of fingers includes a plurality of voltage clamps, and each voltage clamp of the plurality of voltage clamps includes at least a first well having a first conductivity type and a second well having a second conductivity type, and a connection between a well tie of the first well of a first voltage clamp of the plurality of…
Varying operation of a voltage regulator, and components thereof, based upon load conditions
Granted: October 20, 2015
Patent Number:
RE45773
A method for operating a voltage regulator controller, for use in a voltage regulator including coupled inductors, is provided as follows. A first signal is generated for driving a first switch of the voltage regulator. A second signal is generated driving a first switch of the voltage regulator. The voltage regulator determines whether a light-load condition exists. Upon determining the existence of a light-load condition, adjusting the phase difference between said first and second…
USB charger using current limit
Granted: October 20, 2015
Patent Number:
9166429
A universal serial bus charger comprises a universal serial bus connector for providing a connection to a voltage source. An output voltage connector provides a charging voltage to a connected battery. A switching voltage regulator generates the charging voltage responsive to the voltage source. Control circuitry monitors an actual charging current applied to the connected battery and provides a programmed current signal enabling the actual charging current to operate at a programmed…
Systems and methods for lead frame locking design features
Granted: October 20, 2015
Patent Number:
9165863
Systems and methods for lead frame locking design features are provided. In one embodiment, a method comprises: fabricating a lead frame for a chip package, the lead frame having a paddle comprising a step-out bottom locking feature profile across at least a first segment of an edge of the paddle that provides an interface with a mold compound; etching the paddle to have at least a second segment of the edge having either an extended-step-out bottom locking feature profile or an…
