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Assignee: Maxim Integrated Products, Inc.


Location: Sunnyvale, CA
No. of patents: 409

1                      
NumberTitleIssue Date
8183902Methods and systems for digital pulse width modulator
In one embodiment, the digital pulse width modulator of these teachings includes comparators and a number of phases and capable of increasing resolution without increasing clock frequency. In another embodiment, the digital pulse width modulator (DPWM) of these teac...
05/22/2012
8179195Current-feedback instrumentation amplifiers
Current-feedback instrumentation amplifiers that include dynamic element matching for the input transconductance amplifiers by periodically swapping the transconductance amplifiers between the instrumentation amplifier input and the feedback input. The instrumentati...
05/15/2012
8175261Systems and methods for adaptive echo cancellation
An echo canceller comprises foreground and background filters. The background filter locates and confirms peaks, defines active regions centered about the confirmed peaks and updates coefficients of the foreground filter when the background filter is more effective ...
05/08/2012
8175150Methods and/or apparatus for implementing rate distortion optimization in video compression
An apparatus comprising a first circuit, a second circuit and a third circuit. The first circuit may be configured to determine one or more signal characteristics in a portion of an input video signal. The second circuit may be configured to select a multiplier valu...
05/08/2012
8174363Multi-transceiver RFID reader system with centralized control and frequency source
Embodiments of the present invention provide RFID systems having a centralized frequency source and controller. The centralized frequency source generates a reference signal, having a frequency below the RF band of interest, which is transmitted to a plurality of re...
05/08/2012
8165219Memory word array organization and prediction combination for memory access
Described systems and methods allow a reduction in the memory bandwidth required in video coding (decoding/encoding) applications. According to a first aspect, the data assigned to each memory word is chosen to correspond to a 2D subarray of a larger array such as a...
04/24/2012
8165172Robust wideband symbol and frame synchronizer for power-line communication
An embodiment is a method and apparatus to perform symbol synchronization. A sign element obtains signs of samples in a sample vector. A correlation estimator computes a correlation of the sample vector. A synchronization detector detects symbol synchronization....
04/24/2012
8164320Methods and systems for control of switches in power regulators/power amplifiers
A system includes a first switch connected to a voltage input and a switching node. A second switch is connected to the switching node and a reference potential. A first circuit generates first rising edges and first falling edges by comparing a voltage at the switc...
04/24/2012
8159205Inductor current measurement for DC to DC converters
A system includes an averaging module, a high pass filter module, a first estimation module, a sensing module, and a combining module. The averaging module receives an output voltage of a power supply and that generates an average output voltage. The high pass filte...
04/17/2012
8150362Electronically tuned agile integrated bandpass filter
A method and apparatus for an electronically tuned agile integrated bandpass filter is described. In one embodiment, the invention is an intermediate frequency filter for use in an integrated circuit. The filter includes a first filter stage, including a first LC re...
04/03/2012
8149967Combined dual feed-forward and feedback analog and digital automatic gain control for broadband communication
An embodiment is a method and apparatus to process an input signal. An analog automatic gain control (AGC) processor controls an analog adjustable gain of the input signal using a feedback mechanism. The analog AGC processor generates a first signal. A processing ci...
04/03/2012
8149911Method and/or apparatus for multiple pass digital image stabilization
An apparatus including a first circuit and a second circuit. The first circuit may be configured to generate (i) a first series of sequential frames, (ii) a plurality of local motion vectors for each of said frames, (iii) one or more global motion vectors for each o...
04/03/2012
8149909Video encoding control using non-exclusive content categories
In some embodiments, macroblock-level encoding parameters are assigned to weighted Linear combinations of corresponding content-category-level encoding parameters. A macroblock quantization parameter (QP) modulation is set to a weighted linear combination of content...
04/03/2012
8149902Methods to relax the second order intercept point of transceivers
Methods to relax the second order intercept point of transceivers for multi-carrier and OFDM (such as IEEE 802.11a/g and 802.16) based zero IF wireless receivers that need to work in an environment with strong jamming signals, such as, for example, WLAN modules in S...
04/03/2012
8144446Isolated current sensor
The present disclosure includes a power measurement, circuit breaker or integrated protection system including isolated analog-to-digital modulators for measuring current using current sensors, such as, for example, current shunts, in a single or multiphase power sy...
03/27/2012
8143874Switch-mode power supply (SMPS) controller integrated circuit determining operating characteristics from filter component information
A switch-mode power supply (SMPS) controller integrated circuit (IC) provides ease of integration and SMPS designs. Value and/or types of components external to the controller IC that affect the SMPS control loop response are provided to the IC and an internal conve...
03/27/2012
8139614Robust narrowband symbol and frame synchronizer for power-line communication
An embodiment is a method and apparatus to perform symbol synchronization. A correlation estimator computes a correlation of a sample vector representative of a narrowband signal. A synchronization detector detects symbol synchronization. Another embodiment i...
03/20/2012
8135068Method and/or architecture for motion estimation using integrated information from camera ISP
A camera comprising a first circuit and a second circuit. The first circuit may be configured to perform image signal processing using encoding related information. The second circuit may be configured to encode image data using image signal processing related infor...
03/13/2012
8135062Method and apparatus for QP modulation based on perceptual models for picture encoding
A method for encoding a picture is disclosed. The method generally includes the steps of (A) generating at least one respective macroblock statistic from each of a plurality of macroblocks in the picture, (B) generating at least one global statistic from the picture...
03/13/2012
8126283Video encoding statistics extraction using non-exclusive content categories
In some embodiments, content-category-level encoding statistical indicators (statistics) are assigned to weighted linear combinations of corresponding macroblock-level statistics. Content categories may identify potentially overlapping content types such as sky, wat...
02/28/2012
8125572System and method for automatic power-up and power-down of an output video circuit
A system and method for configuring a video circuit into a low power consumption mode and a high power consumption mode. The system comprises an input signal detection circuit adapted to generate a first signal indicative of whether an input video signal is present ...
02/28/2012
8124916Thermal processing of silicon wafers
Apparatus and methods that minimize surface defect development in silicon wafers during thermal processing at relatively high temperatures at which silicon wafers are annealed and at less extreme temperature, or for other purposes. The apparatus and methods have uti...
02/28/2012
8120519Shared operational transconductance amplifier pipelined ADC incorporating a sample/hold amplifier and multiple MDAC stages
A single operational transconductance pipelined ADC incorporating a sample/hold amplifier and multiple MDAC stages. An input signal is sampled on input signal sampling capacitors, and then coupled around an operational transconductance amplifier (OTA) so that the ou...
02/21/2012
8120422Ripple reduction loop for chopper amplifiers and chopper-stabilized amplifiers
Ripple reduction loop for chopper amplifiers and chopper-stabilized amplifiers. The ripple reduction loop includes a first chopper, a first amplifier having an input coupled to an output of the first chopper, a second chopper having an input coupled to an output of ...
02/21/2012
8111761Method and apparatus for transmitting data and power across a transformer
Encoding of a dual mode digital signal for transfer using a dual mode super source follower circuit to drive the signal across a pulse transformer is presented. The dual mode signal includes data in one mode and power/control in the other mode. In the power/control ...
02/07/2012
8098788System and method for automatic leakage control circuit for clock/data recovery and charge-pump phase locked loops
An apparatus that includes a module for controlling the frequency of a voltage controlled oscillator (VCO) as part of a phase locked loop (PLL), or clock and data recovery (CDR) when an input reference signal to the PLL or serial data to the CDR has ceased from bein...
01/17/2012
8098602System and method for transferring data over full-duplex differential serial link
A data transmission technique where high speed data is transmitted differentially in a forward channel by way of a serial link, and relatively low speed data is differentially modulated onto the forward channel signal for transmission in a reverse channel via the li...
01/17/2012
8097963Electrically conductive matrix for z-axis interconnect
An IC package including one or more z-axis interconnects for performing at least in part the fan-in/fan out interconnection for electrically coupling contacts of semiconductor die to external contacts of the package. The z-axis interconnect comprises a matrix of ele...
01/17/2012
8094716Method and apparatus of adaptive lambda estimation in Lagrangian rate-distortion optimization for video coding
A method for hybrid video coding is disclosed. The method generally includes the steps of (A) calculating a bit rate based on a percentage of quantized zero coefficients resulting from encoding a plurality of components of a video signal, (B) calculating a distortio...
01/10/2012
8088646Check valve package for PB-free, single piece electronic modules
Check valve package for pb-free, single piece electronic modules, the package having an exterior and an interior, and at least one electronic device mounted within the interior of the package electrically connected to a lead-free solder ball grid array on a surface ...
01/03/2012
8084871Redistribution layer enhancement to improve reliability of wafer level packaging
An enhanced redistribution layer is provided that geometrically expands redistribution layer (RDL) pads associated with a ball grid array of a wafer level package (WLP) to provide tensile stress relief during temperature cycle and/or drop testing of the WLP. ...
12/27/2011
8081682Video encoding mode decisions according to content categories
In some embodiments, encoding modes for a video image block are enabled according to similarity measures of the block with respect to multiple content categories. Content categories may identify potentially overlapping content types such as sky, water, grass, skin, ...
12/20/2011
8081091Secure keypad scanning
A secure key scanning functionality drives the row lines and column lines of a key switch array with randomized pulses of different polarities, and drives signals in one direction from a row line through a pressed key and to a column line as well as in an opposite d...
12/20/2011
8077490Limit-cycle oscillation (LCO) generation by altering a digital transfer function of a feedback loop element
Limit-cycle oscillation (LCO) generation by altering a digital transfer function of a feedback loop element provides a controllable method and apparatus for generating LCOs within a switch-mode power supply (SMPS). Measurements of the LCO characteristics can then be...
12/13/2011
8064613Electret microphone detection using a current source
The coupling of an electret microphone is detected and identifying whether there is monaural or stereo speakers coupled to the USB connector is accomplished by coupling a current source to the USB ID terminal and detecting the voltage on the ID terminal. If the volt...
11/22/2011
8064180Input-voltage-rate-of-change-dependent current-limit set point for hot-swap controllers
Certain example embodiments disclosed herein include an adaptive current limiter comprising a variable reference voltage generator which is coupled to a power source via two input nodes and which develops a voltage step with exponential decay in response to, for exa...
11/22/2011
8049324Preventing access to stub traces on an integrated circuit package
An integrated circuit (IC) package includes a printed circuit board (PCB) substrate and a plurality of package attachment terminals. The package attachment terminals are used to conduct electrical signals from a die that is attached and bonded onto the PCB substrate...
11/01/2011
8045005System and method for video transmission line fault detection
A video circuit including a video amplifier adapted to generate an amplified output video signal from an input video signal; a short detection circuit adapted to generate a first signal indicative of whether there is a short present at an output of the video amplifi...
10/25/2011
8040181Time delay compensation and pulse width correction
A system, method and apparatus is provided for pulse width correction in a power driver. In an embodiment, an apparatus includes an operational amplifier having an input and an output. The input of the operational amplifier is coupled to receive an input pulse signa...
10/18/2011
8040139Fault detection method for detecting leakage paths between power sources and chassis
A method of detecting a ground fault condition between a direct current power system and the chassis ground of an electric or hybrid-electric vehicle is provided. The method includes sequentially opening and closing a first switch connected between a positive node o...
10/18/2011
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