61 results about "Dsp algorithms" patented technology

A method and system is provided for detecting and characterizing pulsed threat radar emitters through heavy in-band interference. System includes an advanced digital signal processing method provides spatial and temporal interference cancellation, super-resolution direction-finding, and high resolution spectrum analysis techniques. The system receives the digitized output of a discriminator bank and produces highly accurate threat pulse radio frequency estimates. The invention further provides a two-channel configuration for a DF subsystem, to perform adjacent-beam direction-finding through severe interference environments. The invention provides increased sensitivity, increased frequency accuracy, and up to 40 dB of increased interference look-through capability in ES system but remains transparent to ES system functioning and to ES system operators.

Audio transducers (headphones, speakers, microphones) inherently do not accurately reproduce the signal presented to them at the input. This can be compensated for by taking into account the transducer characteristics and transforming the input signal using a digital signal processor (DSP) to counteract the inaccuracies. However, for the compensation to take place, the DSP needs to know the characteristics of the transducer. For systems with built-in transducers (like laptops with internal speakers) the characteristics of the internal speakers can be stored on the hard-drive of the laptop and the DSP can read this data and make the appropriate compensations. Because a transducer (headphone, speaker, microphone) has its own characteristics that need to be compensated for separately, a profile is supplied to the DSP either by a database lookup based on an identification made by the user or transducer itself or by profile information stored on the transducer. Once the characteristics of a transducer are known, many additional DSP algorithms can be applied in order to improve the audio performance and even safety of the system.

A method and system is provided for detecting and characterizing pulsed threat radar emitters through heavy in-band interference. System includes an advanced digital signal processing method provides spatial and temporal interference cancellation, super-resolution direction-finding, and high resolution spectrum analysis techniques. The system receives the digitized output of a discriminator bank and produces highly accurate threat pulse radio frequency estimates. The invention further provides a two-channel configuration for a DF subsystem, to perform adjacent-beam direction-finding through severe interference environments. The invention provides increased sensitivity, increased frequency accuracy, and up to 40 dB of increased interference look-through capability in ES system but remains transparent to ES system functioning and to ES system operators.

The invention provides an article theft detecting device and method based on intelligent video analysis. Whether articles are stolen or not is judged through comparing the similarity among all frames in a monitoring area by using a two-dimensional relevant algorithm as a detecting algorithm which has high sensitiviity and high anti-interference performance and ignores background influence after set without updating the target area pixel. The device based on the algorithm comprises a UPS (Uninterruptible Power Supply) functional power supply, a camera, an infrared lamp set, a DSP (Digital Signal Processor) algorithm analyzing circuit, an alarm circuit and video record storage equipment. The article theft detecting device and method based on intelligent video analysis can be applied to the field of theft prevention monitoring of various articles, an alarm signal is sent after the monitored article is moved away, a video within 15 seconds before and after the article is lost is stored and an investigation clue is provided for the public security bureau. The invention provides the novel device which applies an advanced electronic technology and multiple safety design and can monitor valuables in real time and prevents theft.

A method for measuring the value of an electronic component, including applying a voltage or a current signal to the electronic component, where the signal has a first tone and a second tone of a different frequency, measuring a response signal from the electronic component, where the response signal also has a first tone and a second tone, applying signal processing on the measured response signal to generate a frequency domain signal, and calculating the value of the electronic component by using a relationship between the first tone of the response signal and the second tone of the response signal.

An Ultra Wide Band (UWB) transmitting and receiving device that includes a Digital Signal Processor (DSP) for implementing a DC offset cancellation algorithm, an adder for adding a baseband transmission signal from the transmitter and a calibration signal produced by the algorithm of the DSP, a modulator for modulating the signal from the adder, a transmitter amplifier for amplifying the modulated signal, a coupler for applying the output of the transmitter to the receiver, and a switch for selectively connecting the output of the coupler to the input of the receiver.

An instruction set architecture (ISA) for application specific signal processor (ASSP) is tailored to digital signal processing applications. The ISA implemented with the ASSP, is adapted to DSP algorithmic structures. The ISA of the present invention includes flexible data typing, permutation, and type matching operations (1101, 1102, 1104 and 1106). The flexible data typing, permutation and type matching of operands provides programming flexibility to support different filtering and DSP algorithms having different types of filter coefficients or data samples. A data typer and aligner within each signal processing unit within the ASSP supports flexible data typing, permutation, and type matching of operands of the instruction set architecture.

The invention discloses a terahertz signal generation method and device, belonging to the technical field of optical communication. The generation device comprises an optical frequency comb generator, wherein the output end of the optical frequency comb generator is connected with a first optical filter; an upper channel of the first optical filter is connected with the photoelectric modulator, and a lower channel of the first optical filter is connected with a frequency shifter; the output end of a photoelectric modulator and the output end of the frequency shifter are separately connected with a second optical filter; and a lower channel of the second optical filter is connected with the frequency shifter through a closed-loop feedback compensation device. The terahertz signal generation method and device are based on a single heterodyne closed loop feedback phase stabilization technology. According to the technology, a receiving end does not need to carry out phase compensation on received terahertz waves by using a DSP algorithm, and error-code-free receiving can be realized; and in addition, a voltage-controlled oscillator and the frequency shifter are used for optical signal phase compensation, and the advantages of being high in response speed and large in phase compensation range are achieved.

A method and circuit arrangement utilize a register file of an execution unit as a local instruction loop buffer to enable suitable algorithms, such as DSP algorithms, to be fetched and executed directly within the execution unit, and often enabling other logic circuits utilized for other, general purpose workloads to either be powered down or freed up to handle other workloads.

An instruction set architecture (ISA) for application specific signal processor (ASSP) is tailored to digital signal processing applications. The ISA implemented with the ASSP, is adapted to DSP algorithmic structures. The ISA of the present invention includes flexible data typing, permutation, and type matching operations (1101, 1102, 1104 and 1106). The flexible data typing, permutation and type matching of operands provides programming flexibility to support different filtering and DSP algorithms having different types of filter coefficients or data samples. A data typer and aligner within each signal processing unit within the ASSP supports flexible data typing, permutation, and type matching of operands of the instruction set architecture.