59 results about "Pattern frequency" patented technology

A control system to determine a hands on wheel (HOW) condition is provided. The control system includes a sensor that monitors an amount of applied torque exerted upon a hand wheel, and a control module for monitoring the sensor. The control module includes a notch filter to attenuate a normal column mode frequency from the amount of applied torque to produce a filtered torque signal. The normal column mode frequency represents a range of vibrational modes of the hand wheel based on a hands off wheel condition. The control module includes a state detector to receive the filtered torque signal from the notch filter. The state detector determines if the HOW condition exists based on if the filtered torque signal exceeds an ON threshold torque value.

A method of detecting malicious binary executable files is accomplished by inputting a binary executable file; converting the binary executable file to byte hexadecimal text strings; calculating the frequency of each byte pattern in the byte hexadecimal text strings; selecting characteristic byte pattern frequencies as discriminating features; classifying the discriminating features as malicious or benign; labeling the binary executable file as malicious or benign; and outputting the labeled malicious or benign binary executable file.

A surface wave device can be configured to include an interdigital transducer and an acoustic coating formed upon a piezoelectric substrate, wherein the interdigital transducer is selected to introduce negligible electrical coupling to surface waves thereof. Additionally, an antenna can be integrated with the surface wave device, wherein the antenna receives one or mores signals, which excite the acoustic wave device to produce multiple modes frequency outputs in which temperature and pressure effect changes are separated from one another for analysis thereof.

A mode matching servo for an inertial sensor having a resonator and an accelerometer provides a test signal at a frequency higher than a predetermined inertial sensor response frequency and lower than an accelerometer resonance mode frequency so as to induce acceleration signals from the accelerometer substantially at the test signal frequency when the modes are not matched. A feedback signal is provided in response to such induced signals to substantially nullify the signals.

Threshold matrixes for a C-separation and an M-separation of main colors are used to convert a continuous-tone image subjected to color separation into dot patterns for the C-separation and the M-separation. The dot patterns are binary images in which no screen ruling or screen angle is defined. Then, a color image is reproduced by overlaying the dot patterns for the C-separation and the M-separation. When the dot patterns for the C-separation and the M-separation are converted into patterns in the frequency domain, main frequency components obtained by the conversion have a substantially-constant predetermined pattern frequency for all angles, and the intensity distribution of the main frequency components is varied based on the C-separation and the M-separation.

The invention relates to a system (1) for inducing a subject to fall to sleep, comprising a light pattern generator (3) for generating a time varying light pattern in view of the subject. Further, the system comprises a breathing rate measuring unit (2) for measuring a breathing frequency of the subject. In addition, the system comprises a control unit connected to the breathing rate measuring unit and the light pattern generator, for controlling the light pattern generator (3), such that the generated light pattern has a pattern frequency (13) substantially between the measured breathing frequency (8) and a pre-selected desired frequency (5).

Threshold matrixes for a C-separation and an M-separation of main colors are used to convert a continuous-tone image subjected to color separation into dot patterns for the C-separation and the M-separation. The dot patterns are binary images in which no screen ruling or screen angle is defined. Then, a color image is reproduced by overlaying the dot patterns for the C-separation and the M-separation. When the dot patterns for the C-separation and the M-separation are converted into patterns in the frequency domain, main frequency components obtained by the conversion have a substantially-constant predetermined pattern frequency for all angles, and the intensity distribution of the main frequency components is varied based on the C-separation and the M-separation.

Systems and methods are disclosed which implement one or more overhead reduction technique, if channel conditions favorable to implementation of overhead reduction are present. The one or more overhead reduction technique may have one or more restriction corresponding to the channel for which the overhead reduction technique is implemented. The one or more overhead reduction technique implemented may include time-domain bundling, frequency-domain bundling, and pattern adaptation. Pattern adaptation may include pattern code-domain reduction, pattern timing-domain reduction, and pattern frequency-domain reduction.

The invention provides a neural network processor based on mode frequency statistical encoding and a design method, and relates to the technical field of hardware acceleration of neural network model calculation. The processor includes at least one storage unit for storing an operating command and operational data; at least one calculating unit for neural network calculation; a control unit, connected with the at least one storage unit and the at least one calculating unit and used for obtaining the operating command stored in the at least one storage unit through the at least one storage unit and parsing the operating command to control the at least one calculating unit; at least one data compression unit, each data compression unit being connected with the at least one calculating unit and used for compressing calculated results obtained according to the operational data and performing re-encoding based on mode frequency statistics; and at least one data decompression unit, each data decompression unit being connected with the at least one calculating unit and used for decompressing the compressed operational data.

A method for training a pattern recognition algorithm including the steps of identifying the known location of the pattern that includes repeating elements within a fine resolution image, using the fine resolution image to train a model associated with the fine image, using the model to examine the fine image resolution image to generate a score space, examining the score space to identify a repeating pattern frequency, using a coarse image that is coarser than the finest image resolution image to train a model associated with the coarse image, using the model associated with the coarse image to examine the coarse image thereby generating a location error, comparing the location error to the repeating pattern frequency and determining if the coarse image resolution is suitable for locating the pattern within a fraction of one pitch of the repeating elements.

A circuit and method for indicating an image adjustment pattern using an on-screen display (OSD), includes: a microcomputer for selectively generating a free running frequency or converting the free running frequency into a standard mode frequency and generating a frequency output and video data according to the frequency converted; an OSD control circuit for receiving the frequency output from the microcomputer, and generating an OSD gain signal in accordance with a signal cable check request and an image adjustment pattern OSD gain signal according to the frequency output; a signal processing circuit for receiving and processing the video data according to the frequency output from the microcomputer, and thus outputting a video signal; and a video mixer for mixing the video signal output from the signal processing circuit and the OSD gain signal selectively output from the OSD control circuit, and outputting a signal cable check request video signal and an image adjustment pattern video signal.

A tunable lasing device (100) comprising a ring-shaped laser cavity (102), an optical gain element (104), a bi-directional output coupler (106) and a frequency selection means (114). The frequency selection means is generally a grating with a refractive index that determines a grating reflection frequency. Single mode laser operation is achieved where a cavity mode frequency of the ring-shaped laser cavity coincides with a grating reflection frequency. The refractive index of the grating can be modified by the injection of a variable current. In this way, the lasing frequency can be rapidly tuned between cavity mode frequencies.

The invention relates to a device and a method for measuring visual threshold values, and belongs to the technical field of optical precision measurement. The device for measuring the visual threshold value comprises a first uniform surface light source, a second uniform surface light source, a first fundamental color matching system, a second fundamental color matching system, a first complementary color matching system, a second complementary color matching system, a first color mixing system, a second color mixing system and a beam splitting system. A set of multi-parameter measurement device for the visual threshold values is implemented by utilizing a four-integrating sphere light source system and multiplexing the color matching systems, the color mixing systems and a subsequent light path to generate four observation targets of which the brightness (illuminance), the contrast, the chromaticity and the periodic pattern frequency are variable, and can be used for simultaneously measuring visual illuminance, contrast and chromatic aberration threshold values, so that the device is convenient to operate, wide in measurement range and color gamut adjustment range and higher in light source output power, and a plurality of parameters can be measured.

A normalization threshold side size Nr which serves as an index indicative of how many times the pattern frequency r is repeated in one threshold matrix is defined as Nr=N×r / R where N represents a size of one side of the threshold matrix as the number of pixels, and the threshold array of the threshold matrix is determined such that the normalization threshold side size Nr is of an value greater than 65.

An external cavity laser includes a lasing cavity and an optically coupled feedback cavity having differently spaced resonant lasing and feedback mode frequencies. The lasing modes can be collectively or individually matched to selected feedback modes. For example, a current driving the lasing cavity can be adjusted to shift individual lasing modes into alignment with the selected feedback modes.