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| Number | Title | Issue Date |
| 8174961 | Switch control device The present invention relates to a switch controlling apparatus. The switch controlling apparatus controls a main switch by using a first signal that corresponds to a current flowing to the main switch. The switch controlling apparatus includes a PWM controller for ... | 05/08/2012 |
| 8089860 | Data transmission system and method Data transmission system and method are provided. The transmission system includes a data converter and data restoring unit. The data converter converts N-bit first data to be transmitted into M-bit second data, where M is greater than N and the second data is arran... | 01/03/2012 |
| 7948869 | Time-encoding-based high-capacity digital communication link The present invention relates to a digital communication architecture based upon the concept of time encoding. In one aspect, systems provide time-encoding-based digital communication, the systems comprising a transmitter, a communication channel, and a receiver. In... | 05/24/2011 |
| 7894332 | Power profile reshaping in orthogonal frequency division multiple access symbols A method, information processing system, and base station for reshaping power profiles in Orthogonal Frequency Division Multiple Access (OFDMA) symbols. The method includes monitoring a scheduler (116) at a base station (110) for a modulation and codin... | 02/22/2011 |
| 7859991 | Signal transmitting apparatus, power supplying system, and serial communication apparatus A signal transmitting apparatus includes a sending part and a receiving part. The sending part converts each width of a plurality of digital input signals into a voltage in accordance with a predetermined weight, generates a send signal by adding voltages converted ... | 12/28/2010 |
| 7848222 | Pulsed wave interconnect A method for transmitting signals along an interconnect in a VLSI system comprising receivers is disclosed. The VLSI based systems operate in the high Giga hertz range. The signals are transmitted along the interconnect as a localized wave packet i.e. as a pulse. Th... | 12/07/2010 |
| 7821918 | System and method for communication channel and device control via an existing audio channel A system and method for communication channel and device control via an existing audio channel. A combined communication signal is received from a communication device comprising an audio signal and a modulated carrier signal via an audio channel. The audio signal i... | 10/26/2010 |
| 7817534 | Method and apparatus for interrupting a transmission of a multicast signal A method and apparatus for interrupting a transmission of a multicast signal includes a common channel selector (106) coupled to a receiver (102) to receive common channel information (116) therefrom. A repetition value calculator (108) r... | 10/19/2010 |
| 7778154 | Techniques for reducing interference in a communication system A technique of operating a communication device includes identifying a signal null associated with a signal to be transmitted on a first communication channel. A channel gain of the first communication channel is adjusted at a time that substantially coincides with ... | 08/17/2010 |
| 7391716 | Semiconductor integrated circuit and data transmission system A semiconductor integrated circuit which transmits voice data as ancillary data while maintaining transmission quality without increasing the number of transmission cables in a system for carrying out serial transmission of image data as main data. The semiconductor... | 06/24/2008 |
| 7366908 | Digital watermarking with content dependent keys and autocorrelation properties for synchronization A digital watermark detection method exploits autocorrelation properties of the watermarked signal that enable synchronization of the digital watermark despite temporal or geometric distortion of the host signal. Other watermark methods employ keys, including a key ... | 04/29/2008 |
| 7359528 | Monitoring of video or audio based on in-band and out-of-band data The presently claimed invention relates generally to monitoring and/or filtering video or audio data. In one implementation a method is provided including: obtaining data representing video or audio; analyzing the data representing video or audio for an in-band sign... | 04/15/2008 |
| 7349552 | Connected audio and other media objects Media objects are transformed into active, connected objects via identifiers embedded into them or their containers. In the context of a user's playback experience, a decoding process extracts the identifier from a media object and possibly additional context inform... | 03/25/2008 |
| 7330562 | Watermarking in the time-frequency domain Methods and systems for time-frequency domain watermarking of media signals, such as audio and video signals. An encoding method divides the media signal into segments, transforms each segment into a time-frequency representation, and computes a time-frequency domai... | 02/12/2008 |
| 7330662 | System and method for remote optical digital networking of computing devices The extended range of optical data communication is enabled through the use of intermediary relay stations spaced fairly far apart. IRDA communicatiOn, as is well known, uses very short duration optical pulses to send data up to 1 Mbit/sec; this has the concomitant ... | 02/12/2008 |
| 7328236 | Method and system for accessing information and/or data available on a wide area computer network There is disclosed a method and a system for accessing information and/or data available on a wide area computer network (100), such as the Internet. A first modulated acoustic signal (A) is transmitted to a group of potential users each provided with a porta... | 02/05/2008 |
| 7321559 | System and method of noise reduction in receiving wireless transmission of packetized audio signals A receiver for receiving wireless packetized audio signals having packet headers, and packet payloads including encoded audio signals is provided. The receiver includes an audio decoder for decoding the encoded audio signals into digital audio signals, an audio erro... | 01/22/2008 |
| 7302055 | Discharging envelope detector A receiver to detect pulses on a home phone wiring network using envelope detection. The receiver comprises an integrating capacitor charged by a first current source responsive to a differential signal propagated on the wiring network, and discharged by a FET in co... | 11/27/2007 |
| 7295252 | Control apparatus of audio-visual display apparatus and the control method A control apparatus of an audio-visual display apparatus is provided, wherein only one remote control unit in a plurality of remote control units has a control right for controlling the audio-visual display apparatus, the control apparatus determines whether a signa... | 11/13/2007 |
| 7286599 | Method and design of data communications transceiver for ultra wide band (UWB) operation in 3.1 GHz to 10.6 GHz frequency band An ultra wide band (UWB) communication system includes a channel filter bank to cover the 3.1 to 10.6 GHz band in channels having approximately equal bandwidth. A transmitter and a receiver may share the filter bank when the communication system is configured as a t... | 10/23/2007 |
| 7266463 | Signal identification method and apparatus for analogue electrical systems An apparatus, a method, and a computer program product are provided for identifying signals in analogue electrical systems. The ID select signals that control the timing of this signal identification circuit comprise sequential numbers that count up and identify a c... | 09/04/2007 |
| 7266077 | Serial digital communication system and method A serial digital communication system includes a master device and a plurality of slave devices connected serially between the master device's output and input—thereby forming a closed chain. Each slave device transmits a predetermined number of PWM pulses to the ... | 09/04/2007 |
| 7227453 | Multi-control telematics in a vehicle An apparatus and method allow either the driver or a passenger in a vehicle to operate a telematic unit in the vehicle. Communication requests may be prioritized, depending upon the type of communication desired and whether the request is being made by the driver or... | 06/05/2007 |
| 7224819 | Integrating digital watermarks in multimedia content A method for tracking media signals in multimedia content is provided by uniquely identifying the multimedia content with a digital watermark identifier. A video channel is preferably embedded with a first watermark identifier. The first identifier uniquely identifi... | 05/29/2007 |
| 7200187 | Modulator for digital amplifier A digital modulator for driving a digital amplifier. The digital modulator has a subtractor which receives a digital input signal. A filter amplifier receives the output of the filter amplifier and is tuned to an idle frequency of the digital modulator. The digital ... | 04/03/2007 |
| 7194010 | Wireless base station to base station synchronization in a communication system, such as a system employing a short range frequency hopping or time division duplex scheme In a network, a method is disclosed for wirelessly exchanging communications with at least one mobile unit. The network includes first and second base stations units coupled to the network, and may include a system controller. The method includes: receiving a commun... | 03/20/2007 |
| 7184480 | Digital PWM generator A digital PWM circuit is provided. One exemplary circuit includes a binary counter, an n-bit DAC and a comparator. The binary counter generates a plurality of binary signals in increasing and/or decreasing value. The DAC circuit generates ramp signals composed of a ... | 02/27/2007 |
| 7181022 | Audio watermarking to convey auxiliary information, and media embodying same Methods of processing audio to convey auxiliary information therein without audible evidence of data alteration. Various arrangements are disclosed. One receives plural bit auxiliary data in which the auxiliary information is included, and modulates a carrier signal... | 02/20/2007 |
| 7106793 | Method, device, and interface for transmitting data A method, a device, and an interface for transmitting data between at least two subscribers, at least one first subscriber transmitting a pulse-width-modulated data signal. The at least second subscriber for its part transmits an asynchronous data signal, which is c... | 09/12/2006 |
| 7079577 | Wide window decoder circuit for dual phase pulse modulation A dual phase pulse modulation (DPPM) decoder circuit processes a DPPM signal, which is in the form of a series of high and low pulses whose pulse widths represent successive groups of M data bits, so as to recover data carried by the signal. Each of the 2M | 07/18/2006 |
| 7061979 | System and method for determining the data rate of a digital data stream A system and method for determining a minimum pulse width for a digital data stream is described herein. The minimum pulse width is used to infer the data rate for the digital data stream. A measuring cell is used to measure the pulse widths by utilizing RC time con... | 06/13/2006 |
| 7055034 | Method and apparatus for robust embedded data This invention describes a method and apparatus for the increasing the robustness of embedded data. Since many times embedded data is susceptible to removal by an unauthorized person, one preferred embodiment enables an action such that removal of the embedded data ... | 05/30/2006 |
| 7050603 | Watermark encoded video, and related methods Watermarks in video signals or the accompanying audio track are used to associate video objects in a video sequence with object specific actions or information. A video object refers to a spatial and temporal portion of a video signal that depicts a recognizable obj... | 05/23/2006 |
| 7027614 | Hiding information to reduce or offset perceptible artifacts The present invention relates to digital watermarking. In a preferred embodiment, a multi-channel media signal is embedded with first and second digital watermark components. The first component is embedded in a first of the channels and a second component is embedd... | 04/11/2006 |
| 7013153 | Method and system for generating a secure wireless link between a handset and base station Methods and apparatus for establishing secure wireless links between a handset and a base station in cordless telephone systems are described. A method of generating a secure wireless link between a handset and a base station includes initiating a linking procedure,... | 03/14/2006 |
| 7006555 | Spectral audio encoding Blocks of audio are encoded based upon corresponding first and second frequencies. The first and second frequencies are hopped from block to block. An audio quality measure (AQM) is computed for each block of audio such that, if x out of y blocks of audio have an AQ... | 02/28/2006 |
| 7006586 | Cyclic buffer for infrared An apparatus for receiving and processing an electrical signal in the form of a pulse train comprising a plurality of pulses. The apparatus generally comprises a processor, a memory and a timer. The timer may be configured to generate a respective value representati... | 02/28/2006 |
| 7002821 | Zero drift analog memory cell, array and method of operation A zero-drift analog memory (ZDAM) cell that indefinitely maintains an output signal at a discrete voltage while the memory circuit is powered, wherein the memory circuit receives an input signal, passes the input signal to a storage element upon receiving an asserti... | 02/21/2006 |
| 7003032 | Generation of multiple independent high resolution pulse width modulations A method for generating multiple high-resolution PWM signals in which software interrupts are introduced at predetermined intervals to generate multiple high-resolution PWM signals from a conventional microprocessor. The software determines the purpose of the interr... | 02/21/2006 |
| 6996632 | Multiphase encoded protocol and synchronization of buses A multiphase encoded protocol has sufficient density of commands to allow a rich language to be realized on a bus. When ten field bits are dedicated to commands, it is possible to have more than six million words to choose from per clock. Architecture to implement t... | 02/07/2006 |
