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| Number | Title | Issue Date |
| 7961120 | Truncation for three-level digital amplifier A noise shaper truncates the widths of pulses it supplies to a pulse-width modulator whose pulse-width modulated signals control a tri-level amplifier. The amplifier is filterless and DC free. Pulses that are narrower than a predefined minimum width are eliminated b... | 06/14/2011 |
| 7800518 | Pulse modulation method A pulse modulation method divides code comprising 4N-bit data into 2-bit units of data. For each pulse signal having a fixed pulse width tw, a code modulated signal is generated by pausing between pulse pause intervals Tr. An adjusted time width of between ½ and 1 ... | 09/21/2010 |
| 7724161 | Truncation for three-level digital amplifier A noise shaper truncates the widths of pulses it supplies to a pulse-width modulator whose pulse-width modulated signals control a tri-level amplifier. The amplifier is filterless and DC free. Pulses that are narrower than a predefined minimum width are eliminated b... | 05/25/2010 |
| 7701367 | Digital signal decoding method A computer-implemented method to decode a digital signal includes following steps. A micro control unit (MCU) receives a digital signal. The MCU reads a low voltage period of the digital signal and stores a time duration of the low voltage period into a first regist... | 04/20/2010 |
| 7626519 | Pulse-width modulation of pulse-code modulated signals at selectable or dynamically varying sample rates Digital audio circuitry including modulation circuitry (35; 135) for generating a pulse-width modulated (PWM) signal from processed pulse-code modulated (PCM) audio signals. The modulation circuitry includes a duration quantizer function (32) that gene... | 12/01/2009 |
| 7612696 | Method and system for decimating a pulse width modulated (PWM) signal A method and system of decimating a Pulse Width Modulated (PWM) signal (537) is provided. The method includes computing one or more timestamps (553) of the PWM signal (537), the PWM signal being at a first sample rate (567). The one or mo... | 11/03/2009 |
| 7515072 | Method and apparatus for converting PCM to PWM A circuit for converting from an input serial pulse code modulated (PCM) digital signal to an output pulse width modulated (PWM) digital signal for driving a switching audio amplifier requiring a pulse width modulated input signal, the circuit comprising a sample ra... | 04/07/2009 |
| 7474234 | Serial interface circuit for a single logic input pin of an electronic system A serial interface circuit for a single logic input pin of an electronic system, comprising a decoder for converting a pulse width modulated input signal applied to the pin to a sequence of logic low and logic high values. The decoder comprises an up/down counter wi... | 01/06/2009 |
| 7433404 | Apparatus for higher resolution pulse width modulation duty cycle A pulse width modulation (PWM) generator featuring very high speed and high resolution capability and the ability to generate standard complementary PWM, push-pull PWM, variable offset PWM, multiphase PWM, current limit PWM, current reset PWM, and independent time b... | 10/07/2008 |
| 7426123 | Finite state machine digital pulse width modulator for a digitally controlled power supply A method is disclosed for generating pulse width modulated pulse control signals for controlling switches in a switching power supply. First, a count value is determined of a master clock within a switching cycle of the power supply from beginning to end thereof. A ... | 09/16/2008 |
| 7391346 | Switching amplifier system and method A switching amplifier system and method is disclosed. In a particular embodiment, a pulse width modulation frame size is determined based on a sample rate of a digital input signal. Data associated with the first digital input signal is modified based on the pulse w... | 06/24/2008 |
| 7391344 | High speed data recording with input duty cycle distortion Data from both a positive edge sample and negative edge sample are used to determine a data bit. The primary and secondary clocks capture two copies of the data. A sample is taken with a positive edge of one clock and the negative edge of the other clock each bit pe... | 06/24/2008 |
| 7376182 | Digital processor with pulse width modulation module having dynamically adjustable phase offset capability, high speed operation and simultaneous update of multiple pulse width modulation duty cycle registers A pulse width modulation (PWM) generator featuring very high speed and high resolution capability and the ability to generate standard complementary PWM, push-pull PWM, variable offset PWM, multiphase PWM, current limit PWM, current reset PWM, and independent time b... | 05/20/2008 |
| 7369067 | Optical coupled type isolation circuit In an optical coupled isolation circuit, a PWM encoder encodes a one-bit binary data signal supplied from a sigma-delta analog-digital converter in synchronization with a clock signal of a cycle T to produce a pulse width modulation signal. The pulse width modulatio... | 05/06/2008 |
| 7317758 | PCM-to-PWM converter The invention relates to a method and a device for converting a digital, pulse-coded signal (PCM) to a pulse-width-modulated signal (PWM), wherein the digital signal PCM, f(t) is multiplied by at least one derivative (f′(t), f″(t), . . . , f(n) (t)) o... | 01/08/2008 |
| 7293127 | Method and device for transmitting data using a PCI express port A data port operates to support symmetric PCI Express-type data transfers when in a first mode of operation. When in a second mode of operation, at least a portion of the data port connections are used to support an asymmetric PCI Express-type data transfer. The asy... | 11/06/2007 |
| 7283011 | Method for performing dual phase pulse modulation A modulation method, referred to as dual phase pulse modulation (DPPM), represents digital data as a series of high and low pulses whose widths represent groups of M data bits, with both the high and low pulses representing successive M-bit groups. Each of the 2 | 10/16/2007 |
| 7283078 | Digital-to-analog converter A converter of a digital signal into a pulse-width modulated signal, comprising a first conversion unit receiving, at a first frequency, successive digital signals each having one of a first determined number of values, and providing first intermediary signals, at t... | 10/16/2007 |
| 7280054 | Integrated circuit interface that encodes information using at least one input signal sampled at two consecutive edge transitions of a clock signal An integrated circuit, such as a dynamic RAM, includes a plurality of terminals for coupling to signal lines. One of the signal lines is an input signal line that conveys a clock signal, and at least one other signal line is also an input signal line that conveys in... | 10/09/2007 |
| 7274313 | High speed data recording with input duty cycle distortion Data from both a positive edge sample and negative edge sample are used to determine a data bit. The primary and secondary clocks capture two copies of the data. A sample is taken with a positive edge of one clock and the negative edge of the other clock each bit pe... | 09/25/2007 |
| 7271754 | Digital pulse-width modulator A digital pulse-width modulator is provided that receives a digital command input signal and a secondary control input signal and provides a pulse-width-modulated output signal. The pulse-width-modulated output signal comprises a pulse-width that corresponds to an i... | 09/18/2007 |
| 7260151 | Dual phase pulse modulation system A system configured to transmit and receive data signals over a data link in serial fashion using dual phase pulse modulation (DPPM) is described. The data link may be, for example, a one or two wire unshielded twisted pair (UTP) cable. An exemplary system includes ... | 08/21/2007 |
| 7248715 | Digitally watermarking physical media A digital watermark is embedded through varying pit locations on a data side of a CD, SACD or DVD. In one embodiment, a pattern of pits or data indentations forms a visual design on the data side. A watermark is embedded by slightly varying various pit locations wit... | 07/24/2007 |
| 7243036 | System and method for calibrating the clock frequency of a clock generator unit over a data line In order to further develop a system (100) and a method for calibrating the clock frequency of at least one clock generator unit (38), in particular oscillator unit, that is assigned to at least one transmitting/receiving module (30), wherein—... | 07/10/2007 |
| 7233618 | Circuit configuration and method for transmitting digital signals To transmit digital signals, binary signals are transformed into a series of pulses, the pulses being modulated in their pulse length as a function of an information content of the binary signals. In a corresponding circuit configuration, a modulation unit is connec... | 06/19/2007 |
| 7227476 | Dither scheme using pulse-density modulation (dither PDM) Dithering for the output of a digital pulse width modulator is provided by a pulse-density modulator formed from an adder incrementing a pulse-density count and generating a carry signal latched to a plus-one generator, which in turn adds a phase-division period to ... | 06/05/2007 |
| 7221295 | High speed serializer-deserializer A high speed serializer-deserializer (SerDes) that passes significantly more data through a channel for a given analog bandwidth and signal-to-noise ratio. This SerDes technique involves converting a plurality of bits to be transferred to positions of edges of a wav... | 05/22/2007 |
| 7184479 | Data transmission method and data transmission device A data transmission method capable of suppressing communication errors with a simple microcomputer processing is provided. Upon a pulse signal in which specific data is made up of H and L levels, either one of which has a pulse width taken as a first fundamental sig... | 02/27/2007 |
| 7183959 | Method and system for implementing a reduced latency, wideband pulse density modulation digital to analog converter According to one aspect of the present invention, this invention implements a low latency, wide bandwidth method and system for converting a numeric digital values into a pulse density modulated analog output signals. Such output signals having their lowest output f... | 02/27/2007 |
| 7180886 | Synchronized data communication on a one-wired bus In a synchronized data communication on a one-wired bus, it transmits and receives a synchronizing signal that segments part of or all proportions of the data signal by use of three electrically distinguishable statuses for the identifier of the synchronizing signal... | 02/20/2007 |
| 7174497 | Method of storing or decoding a stream of bits The invention relates to a method of storing a number of data bits of a secondary channel (30) in the frame of a main channel (20) and to a method of decoding a stream of bits relating to a secondary channel (30) embedded in the frames of a main... | 02/06/2007 |
| 7145482 | Method, system, and apparatus for remote data calibration of a RFID tag population A method, system, and apparatus for remotely calibrating data symbols received by a radio frequency identification (RFID) tag population are described. Tags are interrogated by a reader, which may be located in a network of readers. The reader transmits data symbols... | 12/05/2006 |
| 7130346 | Method and apparatus having a digital PWM signal generator with integral noise shaping A method and apparatus having a digital pulse width modulation generator with integral noise shaping is provided. The apparatus for generating a digital pulse width modulation signal includes a random period signal generator, a noise shaping unit, a duty ratio quant... | 10/31/2006 |
| 7124315 | Blade system for using multiple frequency synthesizers to control multiple processor clocks operating at different frequencies based upon user input In a system and method for managing the operating frequency of processors in a blade-based computer system, a circuit receives a signal with instructions relating to the desired operating frequency of the processors or blades. The circuit then generates a control si... | 10/17/2006 |
| 7123171 | RFID readers and RFID tags communicating using extensible bit vectors RFID system components, such as readers and tags, communicate by transmitting and receiving a wave that conveys a bit stream. Informing signals, such as special bits, are inserted in the stream between words. An informing signal indicates whether a certain word is t... | 10/17/2006 |
| 7120550 | Radio-frequency identification circuit oscillator calibration According to one aspect of the present invention, there is provided a method of calibrating an oscillator within a radio-frequency identification (RFID) circuit for use in an RFID tag. A plurality of calibration values is stored within a memory structure associated ... | 10/10/2006 |
| 7119720 | Precision pulse placement to form a binary pulse signal The present invention relates to a method for pulse placement to form a binary pulse signal, said binary pulse signal having a constant pulse rate being reciprocal of a constant pulse rate period, comprising the steps of generating a bit clock having a bit clock per... | 10/10/2006 |
| 7110681 | Method and apparatus for optical transmission Binary information is subjected to RZ encoding and multi-level encoding, and the encoded signal is optically modulated. ... | 09/19/2006 |
| 7092439 | Means and method of data encoding and communication at rates above the channel bandwidth The present invention relates to the reduction of artifacts introduced by sending data at a higher rate than the bandwidth of the communication channel, such as the voltage and current offsets introduced in the data at the receiver as a function of the preceding dat... | 08/15/2006 |
| 7088141 | Multi-threshold complementary metal-oxide semiconductor (MTCMOS) bus circuit and method for reducing bus power consumption via pulsed standby switching A multi-threshold complementary metal-oxide semiconductor (MTCMO) bus circuit reduces bus power consumption via a reduced circuit leakage standby and pulsed control of standby mode so that the advantages of MTCMOS repeater design are realized in dynamic operation. A... | 08/08/2006 |
