Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8185334 | Methods and systems for filtering a digital signal Aspects of the present invention are related to systems and methods for removing spikes and/or speckle noise from a digital signal. In some embodiments of the present invention, an input signal is filtered according to a first low pass filter. The low pass filtered ... | 05/22/2012 |
| 8184747 | Flexible timebase for EYE diagram A flexible timebase for eye diagrams uses a stable free running oscillator as a sample clock for equivalent time sampling of an input serial digital signal and of a reference signal derived from a subdivided recovered clock of the input serial digital signal. The re... | 05/22/2012 |
| 8184608 | System and method for using CDMA PN offset to maintain instrument timing reference A system and method is provided enabling identification of different PN offsets values for CDMA signals without access to a GPS signal, such as when making measurements within indoor environments. When a timing reference, such as that provided by a GPS signal, is lo... | 05/22/2012 |
| 8184163 | Methods and systems for detecting and locating skipped frames in a video sequence Embodiments of the present invention comprise methods and systems for detecting and locating skipped frames in a test video sequence in relation to a reference video sequence. Some embodiments comprise identifying pairs of temporally aligned reference and test segme... | 05/22/2012 |
| 8184121 | Methods, systems, and apparatus for multi-domain markers Embodiments of the present invention comprise methods, systems, and apparatus for multi-domain markers. ... | 05/22/2012 |
| 8180586 | Amplitude discrimination using the frequency mask trigger A frequency mask trigger having frequency selective amplitude discrimination capability is provided for triggering when selected frequency components of an input signal fail to reach a desired power level. A frame of digital data representing an input signal is tran... | 05/15/2012 |
| 8179443 | Waveform display apparatus and method A waveform display apparatus that can display a waveform in a desired position even when an internal reference mode is switched to an external reference mode. The internal and external reference modes are switched with a reference select button 60. A user ope... | 05/15/2012 |
| 8179305 | Enhanced impulse response measurement of an FM radar transmitter pulse An enhanced impulse response measurement for a pulsed frequency modulation (FM) radar signal provides a more accurate measurement of the amplitude of a secondary response relative to the amplitude of a main response. The pulsed FM radar signal is sampled to produce ... | 05/15/2012 |
| D659641 | Keyed receptacle for accessory-host interface | 05/15/2012 |
| 8171071 | Open component manipulation system A messaging system and method for creating a messaging hierarchy in a computer network are described. The network is made up of multiple network entities, which include both publishing entities and subscribing entities, where the publishing entities have data of whi... | 05/01/2012 |
| 8165184 | Apparatus and method for synthesizing and generating an SSC modulated signal An Arbitrary Waveform Generator (AWG) synthesizes and generates an SSC modulated signal by generating a modulating waveform with a frequency of an SSC modulation frequency, calculating the number of samples per data bit (SPUI) as a ratio of an upsampling frequency t... | 04/24/2012 |
| 8164503 | Data converter system that avoids interleave images and distortion products A data converter system provides an output signal having reduced spurious tones by confining an input signal to a specified frequency band and over-sampling so that the converted input signal “straddles” or “avoids” spurious tones. The spurious tones may the... | 04/24/2012 |
| 8161497 | Holdoff algorithm for no dead time acquisition An improved hold-off algorithm that assures that all data associated with all trigger events in a data signal are displayed uses a designated interval starting with a first trigger event to determine whether any subsequent trigger events occurred within the designat... | 04/17/2012 |
| 8155165 | Method of characterizing parameters and removing spectral components of a spread spectrum clock in a communications signal Parameters of a spread spectrum clock signal in a communication signal are characterized by acquiring voltage samples of the communication signal at a nominal time location of an edge of the communication signal. The voltage samples are converted to time samples and... | 04/10/2012 |
| 8144688 | System and method for discovering SCTP associations in a network Systems and methods for discovering SCTP associations between devices communicating in a network are described. A method comprises monitoring packets communicated among a plurality of source and destination devices, determining a combination of source EP address, so... | 03/27/2012 |
| 8139503 | System and method for automatic detection of UTRAN topology System and method for automatically detecting nodes, components and interfaces in a network. A preferred embodiment comprises detecting nodes in a network, wherein the nodes are coupled to a network controller, comprises identifying ports for the network controller,... | 03/20/2012 |
| 8131489 | Long data record analysis A data analysis technique for a long data record in a memory uses a reference, either user-provided or calculated from the data in the long data record, as a representative event. Each event in the long data record is compared with the reference to determine whether... | 03/06/2012 |
| 8130660 | System and method of remote testing in loopback mode using MGCP/NCS This invention relates to a system and method of monitoring, by establishing end to end loopback testing across one or more networks with dissimilar transport technologies. The system allows for connection in loopback mode from a standard interface on a test device ... | 03/06/2012 |
| 8103473 | Test and measurement instrument and method of calibrating A test and measurement instrument and a method of calibrating the test and measurement instrument including a reference signal generator; multiple input channels; and multiple input circuits. Each input channel is coupled to a corresponding input circuit; and one of... | 01/24/2012 |
| 8102396 | Apparatus and method for improved measurement speed in test and measurement instruments An apparatus for measuring a parameter of a digitized signal including a digitizer to digitize an input signal into a digitized signal, a rasterizer to generate a raster image from the digitized input signal, a processor to receive the raster image, and a control in... | 01/24/2012 |
| 8091225 | Method of manufacturing probe with printed tip The manufacturing method of a probe with printed tip consists of a substrate having a plurality of probe tips connected to its end edge, a plurality of test paths, each connected to one of the probe tips and extending along the substrate, and at least one of the tes... | 01/10/2012 |
| 8089293 | Test and measurement instrument and method of configuring using a sensed impedance A test and measurement instrument including a port including a plurality of connections; an impedance sense circuit configured to sense an impedance coupled to a connection of the plurality of connections; and a controller configured to setup the test and measuremen... | 01/03/2012 |
| 8085812 | Symbolic representation of protocol-layer information A method of displaying protocol-specific data includes receiving data, extracting protocol-specific information from the data, converting protocol-specific information into a symbolic representation, and presenting the symbolic representation. A dimension of symbols... | 12/27/2011 |
| D649971 | Adapter used with an accessory-host interface | 12/06/2011 |
| D649970 | Adapter used with an accessory-host interface | 12/06/2011 |
| 8068501 | System and method for real-time correlation of AAL2 and AAL5 messages for calls in UTRAN System and method for correlating multiple frames of data associated with a single call into a call record. One embodiment comprises correlating data in a radio access network by capturing data passing to and from a radio network controller, identifying ATM Adaptati... | 11/29/2011 |
| 8067718 | Method and apparatus for probing A probe comprises a small “consumable” probe substrate permanently mounted to a circuit-under-test. The probe substrate includes a high-fidelity signal pathway, which is inserted into a conductor of the circuit-under-test, and a high-bandwidth sensing circuit wh... | 11/29/2011 |
| 8059129 | Fast rasterizer A fast rasterizer uses a fast memory that has a bit-set port for receiving data and a totally independent readout and clear port for outputting a waveform image. The fast memory is organized into rows and columns corresponding to the rows and columns of a raster dis... | 11/15/2011 |
| 8055464 | Method of processing waveform data from one or more channels using a test and measurement instrument The method of processing waveform data from one or more channels using a test and measurement instrument, such as an oscilloscope, is described in which waveform data is collected from a DUT; defining a context is defined by instructing the instrument to obtain the ... | 11/08/2011 |
| 8055226 | Frequency response correction for a receiver having a frequency translation device A method of correcting the frequency response of an RF receiver having a frequency translation device and a fixed IF frequency section uses calibration data representing frequency responses over a wide frequency range for multiple center frequencies. The calibration... | 11/08/2011 |
| 8055077 | R/T display compression preserving intensity information A realtime display compression for a waveform image uses a priority basis for combining groups of pixels when producing a compressed waveform image in order to preserve intensity information. As an example successive lines of data for the waveform image are demultip... | 11/08/2011 |
| 8054331 | Systems and methods for generating video test sequences based upon captured video data A video test system is provided with a circular buffer to capture a video input sequence in response to a trigger, and a test generator output to generate a video test sequence based upon the captured video test sequence. The system may be implemented using a single... | 11/08/2011 |
| 8050187 | System and method for real-time AAL2 channel detection in UTRAN A system and method for detecting channels in a network using messages passing through the network is provided. An embodiment comprises detecting AAL2 channels communicating between a Node B and an radio network controller and also between two radio network controll... | 11/01/2011 |
| 8046183 | Pre-trigger and post-trigger acquisition for no dead time acquisition system Pre-trigger and post-trigger acquisition for a no dead time acquisition system, where the data being displayed does not include a related trigger event, has a variable record length buffer having a maximum record length equal to a maximum desired pre-trigger interva... | 10/25/2011 |
| 8036485 | Systems and methods for measuring loss of detail in a video codec block Picture quality measurement systems and methods are provided for measuring DC blockiness within video blocks. Block boundaries are located within a test video frame. The relative AC differences within each block are measured using a reference video frame, a statisti... | 10/11/2011 |
| 8024141 | Test and measurement instrument and method for providing post-acquisition trigger control and presentation A test and measurement instrument and method for providing post-acquisition trigger control and presentation of associated waveforms on a display. An electrical signal under test is sampled and digitized, and stored in an acquisition memory as a data record. A displ... | 09/20/2011 |
| 8023729 | Apparatus and method of reducing color smearing artifacts in a low resolution picture A method of reducing color smearing or color artifacts in a low resolution picture that is subjected to chrominance downsampling prior to display on a display device first upsamples the pixels in each row of the picture to double the picture width, then downsamples ... | 09/20/2011 |
| 8023566 | Performing and implementing a test task The present invention relates to a protocol tester and method for performing a test task relating to a specific protocol layer (E2) of a protocol stack in an apparatus to be tested where the specific protocol layer (E2) is superordinated to a higher-le... | 09/20/2011 |
| 8023558 | Method and apparatus for measuring the input frequency response of a digital receiver A frequency response measurement circuit includes a generation circuit operative to provide an input signal having a voltage and programmable frequency characteristics in response to a frequency control signal. A decision circuit is coupled to the generation circuit... | 09/20/2011 |
| 8004969 | Cell level congestion policy management A system and method for transmitting data packets to a wireless client is shown. The data packets are received by a wireless content switch in the wireless network. The wireless content switch determines a quality of service value for the wireless client. The wirele... | 08/23/2011 |
