1546 results about "Pre filtering" patented technology

A system, a device and a method for accelerating packet filtration by supplementing a firewall with a pre-filtering module. The pre-filtering module performs a limited set of actions with regard to the packets, according to whether the packets are received from a connection which has been previously permitted by the firewall. If the packets are received from such a permitted connection, then the pre-filtering module forwards the packets to their destination, optionally performing one or more actions on the packets. Otherwise, the packets are forwarded to the firewall for handling. Preferably, once the firewall has transferred responsibility for the connection to the pre-filtering module, or "off-loaded" the connection, the firewall does not receive further packets from this connection until a timeout occurs for the connection, or a packet is received with particular session-control field values, such that the connection is closed. Optionally and preferably, the pre-filtering module is implemented as hardware.

A computer system identifies malicious Uniform Resource Locator (URL) data items from a plurality of unscreened data items that have not been previously identified as associated with malicious URLs. The system can execute a number of pre-filters to identify a subset of URLs in the plurality of data items that are likely to be malicious. A scoring processor can score the subset of URLs based on a plurality of input vectors using a suitable machine learning model. Optionally, the system can execute one or more post-filters on the score data to identify data items of interest. Such data items can be fed back into the system to improve machine learning or can be used to provide a notification that a particular resource within a local network is infected with malicious software.

A noise suppression device receives data representative of a noise-corrupted signal which contains a speech signal and a noise signal, divides the received data into data frames, and then passes the data frames through a pre-filter to remove a dc-component and the minimum phase aspect of the noise-corrupted signal. The noise suppression device appends adjacent data frames to eliminate boundary discontinuities, and applies fast Fourier transform to the appended data frames. A voice activity detector of the noise suppression device determines if the noise-corrupted signal contains the speech signal based on components in the time domain and the frequency domain. A smoothed Wiener filter of the noise suppression device filters the data frames in the frequency domain using different sizes of a window based on the existence of the speech signal. Filter coefficients used for Wiener filter are smoothed before filtering. The noise suppression device modifies magnitude of the time domain data based on the voicing information outputted from the voice activity detector.

A method and system for the control, aggregation, and management of television programming and Internet content (both traditional and video sources) and more specifically to the customization of media choices and content based in part on the dynamic editing of content according to user preferences. Affiliate Groups can be used to mark, recommend or provide selective editing of video and other media that can be received by users. Users may join Affiliate Groups and selectively view or have content automatically filtered from the data received in their premises such that the display of the media is less than all of the media received at the premises based on Affiliate Group recommendations. Menus and displays may be created that show preferred media content, additional content generated by the Affiliate Groups. Channel schedules may be pre-filtered or provide customized warnings about objectionable material.

A data presentation system that allows a user to view information from a game network in real-time is disclosed. Information is collected from a game network and stored in a data repository. Data is gathered from the data repository, filtered, formatted, and displayed on a viewer of a user machine connected to the data presentation system. A user can select from a number of data views and customize the views, thus ensuring that the desired information is available to the user. Information is updated at a pre-selected rate, or as the network allows. Information may be retained for a period of time, for example, for a shift period. Pre-filtering of data can provide notice to a user when predetermined network events occur.

A method for displaying a near-eye light field display (NELD) image is disclosed. The method comprises determining a pre-filtered image to be displayed, wherein the pre-filtered image corresponds to a target image. It further comprises displaying the pre-filtered image on a display. Subsequently, it comprises producing a near-eye light field after the pre-filtered image travels through a microlens array adjacent to the display, wherein the near-eye light field is operable to simulate a light field corresponding to the target image. Finally, it comprises altering the near-eye light field using at least one converging lens, wherein the altering allows a user to focus on the target image at an increased depth of field at an increased distance from an eye of the user and wherein the altering increases spatial resolution of said target image.

A filter assembly for use in an air filtration unit, particularly for filtering cooking vapors. The assembly includes a filter disposed across an air flow and a grease pre-filter located upstream of the filter. The grease pre-filter is formed principally from wool fiber having an approximate density of 150-200 g / m2 and a loft of substantially 15-20 mm. The use of such a pre-filter substantially prolongs the service life of the filter before cleaning is required.

A first security processing stage performs a first multitude of tasks and a second security processing stage performs a second multitude of tasks. The first and second multitude of tasks may include common tasks. The first security processing stage is a prefilter to the second security processing stage. The input data received as a data stream is first processed by the first security processing stage, which in response, generates one or more first processed data streams. The first processed data streams may be further processed by the second security processing stage or may bypass the second security processing stage. The first security processing stage operates at a speed greater than the speed of the second security processing stage.

A computer file may be scanned for suspicious words 18 occurring within suspicious contexts 20. Thus, messages embedded by malware authors within their malware may be detected. The detection of such embedded messages may be used to identify otherwise unknown items of malware or as a pre-filtering technique for controlling the use of further scanning techniques.

An active noise control system for use in testing hearing using a pure tone audiometry testing procedure and employing multiple switching controllers with pre-filtering means and a switch to select any one controller to provide a predetermined one and having the ability to configure each switching controller so that the maximum threshold shift occurs for the frequency of the test tone and for modifying each test tone in accordance with a standard calibration frequency.

A speech filter (108) enhances the loudness of a speech signal by expanding the formant regions of the speech signal beyond a natural bandwidth of the formant regions. The energy level of the speech signal is maintained so that the filtered speech signal contains the same energy as the pre-filtered signal. By expanding the formant regions of the speech signal on a critical band scale corresponding to human hearing, the listener of the speech signal perceives it to be louder even though the signal contains the same energy.

A system, method, and computer program product that displays a light field to simulate a reflected scene. The method includes the operations of receiving a scene representing an exterior viewpoint relative to an observer positioned in a vehicle, determining a pre-filtered image that simulates a reflection of the scene, where the pre-filtered image represents a light field and corresponds to a target image that simulates a mirror. The pre-filtered image is displayed as the light field to produce the target image.

An integrated treatment system using electrodialysis and pressure-driven membranes for deionizing and decontaminating liquids to a near-pure quality for use or reuse in industrial or municipal operations. The integrated system includes steps of pre-filtering contaminated feed liquids blending the filtered liquids in preparation for treating the mixed liquids in parallel or sequential treatment steps utilizing nanofiltration or reverse osmosis, proceeded by or followed by an integrated electrodialysis treatment. A control means selectively directs mixed liquids to each of the treatment units for treatment in parallel or in series depending on the conductivity and residual contaminants in the mixed liquids. In comparison with nanofiltration or reverse osmosis only systems, or electrodialysis only systems, the integrated system provides improved efficiencies for treatment, requires less energy to operate, and reduces maintenance and capital costs.

The subject invention leverages a scalable character glyph hash table to provide an efficient means to identify print characters where the character glyphs are identical over independent presentation. The hash table allows for quick determinations of glyph meta data as, for example, a pre-filter to traditional OCR techniques. The hash table can be trained for a particular environment, user, language, character set (e.g., alphabet), document type, and / or specific document and the like. This permits substantial flexibility and increases in speed in identifying unknown glyphs. The hash table itself can be composed of single or multiple tables that have a specific optimization purpose. In one instance of the subject invention, traditional OCR techniques can be utilized to update the hash tables as needed based on glyph frequency. This keeps the hash tables from growing by limiting updates that reduce its performance, while adding frequently determined glyphs to increase the pre-filter performance.

Embodiments of the present invention address deficiencies of the art in respect to instant messaging and spim management and provide a novel and non-obvious method, system and computer program product for blocking spim in an instant messaging system. In one embodiment, a data processing system for blocking spim can include instant messaging server logic, a pre-filter database comprising words and / or phrases associated with spim, and a spim sentry coupled to the pre-filter database and the instant messaging server logic. The spim sentry can include program code enabled to block instant messages as spim which contain a threshold number of words and / or phrases which match the words in the pre-filter database.

A filter assembly is provided which is particularly suitable for use in filtering intake air for gas turbines. The filter assembly (6) includes a final filter (9) and a pre-filter (8) which are directly engageable one with the other to provide a complete filter assembly. By so providing, pre-filter units may easily be removed and replaced in a compact configuration. A kit of parts is also provided.

An apparatus and method for enabling rapid transfer of safe data in a data communication network. The apparatus includes a plurality of query modules, a search window, a shift detector, and a database of unsafe data. A predetermined portion of the unsafe data's signature is populated into the query modules, and the signature of a received data in the search window is compared against a plurality of query modules. The search window is shifted according to the result of comparison with the plurality of query modules detected by the shift detector.

The filtering tasks that are conventionally applied in a video monitoring application, to distinguish images that may be relevant to the application, are distributed to the image source, or near-source devices. Source devices, such as cameras and playback devices, and near-source devices, such as video concentrators and streaming devices, are configured to include video processing tools that can be used to pre-filter the image data to identify frames or segments of frames that include image information that is likely to be relevant to the receiving video monitoring application. In this manner, the receiving processor need not spend time and resources processing images that are pre-determined to be irrelevant to the receiving application.

The present invention relates to an apparatus for effectively purifying and neutralizing toxic gases such as odors, fumes or various volatile organic compounds generated by research laboratories, chemical processing factories or hospitals where medicinal products are handled. The apparatus according to the present invention comprises: a main body having an intake, an exhaust and a control panel; a pre-filter, a first filter, first and second neutralizing pellet beds, and a second filter which are mounted in the apparatus main body and are placed from the intake to the exhaust in that order; and a blower and a driving device placed between the first and second neutralizing pellet beds. The apparatus effectively purifies and neutralizes toxic gases and collects fine particles or dust. Thus, the apparatus helps to maintain health of researchers, people who perform experiments, workers in chemical factories, or medical workers, since the filter and neutralizing pellet bed are configured in a cartridge form, the apparatus is low-maintenance. Also, additional connection of other facilities or pipes is not required. Therefore, the apparatus has high usability due to the independent compact form and function thereof, and can be driven with less noise.

A battery powered portable human body carrying electronic human breath filtration device is an electronic nose mask and is the most ideal alternative to conventional filter paper type nose mask. It utilizes electronic ionization technique and electrostatic field to remove air borne particles, dust, pollens, contaminants, bacteria, viruses, toxic chemical, fume and tobacco smoke from human inhalation and exhalation breath. It interacts with human breathing action as the air flow driving system to move the inhalation and exhalation breaths through the electronic filter elements, in addition to a front louver cover and a rear louver cover's protection as pre-filters. The system requires very low running current and uses small batteries usually found in household electronics. This filtration system is light weight with negligible air flow resistance and is integrated into the nose mask which is connected to a pocket size control system via a connection cable.

A first security processing stage performs a first multitude of tasks and a second security processing stage performs a second multitude of tasks. The first and second multitude of tasks may include common tasks. The first security processing stage is a prefilter to the second security processing stage. The input data received as a data stream is first processed by the first security processing stage, which in response, generates one or more first processed data streams. The first processed data streams may be further processed by the second security processing stage or may bypass the second security processing stage. The first security processing stage operates at a speed greater than the speed of the second security processing stage.

A data classification system identifies and processes malicious data that may be present in a received data stream. The system includes at least two stages, and a data flow module. The data flow module derives, from an input data stream, a first processed data stream that is transmitted to the first processing stage. The first processing stage derives, from the first processed data stream, a second processed data stream that is transmitted to the second processing stage. The first and second processing stages optionally derive meta data from the data they receive.

A multi-use sanitization system is disclosed which includes one or more containers in fluid communication with other system components. Components of the system include an ozone contacting device, such as a vortex-venturi or a sparger, for incorporating ozone into a liquid, an ozone generator to provide ozone to the vortex-venturi, a fluid transfer valve to allow simultaneous flow of liquid into and out of the container, and a pump to promote fluid flow through the system. Optionally, a gas-liquid separator with an optional integral gas release valve, an ozone destructor, an oxidation-reduction potential ozone sensor, or a pour-through type pre-filter may be incorporated into the system.

Adaptive equalizers for a communication channel and corresponding methods of equalizing are described. The adaptive equalizer includes: a fixed pre-filter configured to be coupled to a received signal and provide a pre-filter signal; an adaptive filter coupled to and configured to compensate the pre-filter signal for changes in phase and amplitude; and an interference remover coupled to the adaptive filter and configured to reduce interference in the received signal.

A fiber bed assembly for a mist eliminator that operates at high efficiency and inhibits re-entrained liquid from leaving the mist eliminator. The fiber bed assembly has a construction that facilitates rapid drainage of liquid collected by the fiber bed. A pre-filter media can be employed upstream of the primary collection media to remove larger liquid drops. The pre-filter media can be used in unique combination with other features to reduce liquid re-entrainment, and / or allow increased flow capacity.

An ostomy appliance comprising a pouch and a filter construction is provided. The filter construction has a first and second foil layer to provide an enclosure for the elements in the filter construction. The filter construction is attached inside the pouch so that the filter construction is free-hanging inside the pouch. The two foil layers may be generally parallel with the walls of the ostomy bag. The foil layers are provided with numerous holes functioning as gas-inlets for the filter construction. The filter construction includes a pre-filter element and a deodorising filter. A method for collecting discharge as well as an ostomy appliance is provided. A method for reducing the number of balloonings and an ostomy appliance for reducing the number of balloonings is also provided. A method of increasing the time to ballooning as well as an ostomy appliance for increasing the time to ballooning is also provided.

The disclosure describes a method of progressively decoding a digital watermark on a distributed computing platform. A client device equipped with a digital camera, such as a PDA or cell phone, captures a digital image of a watermarked object, and pre-filters the image to isolate a portion of the image data suspected of containing a digital watermark. The pre-filter de-correlates a portion of the image data suspected of containing a digital watermark from the remaining host image signal using a predictive filter. The client then quantizes the filtered data and progressively transmits the quantized data to a watermark decoder. The progressive transmitter sends image data as necessary to achieve a valid decoding operation. To reduce bandwidth requirements, the transmitter starts with the most highly quantized version of the filtered image, and sends lesser quantized versions until the watermark decoder completes a successful decoding operation.

A portable water disinfecting and purification apparatus comprising a first chamber into which water to be purified may be drawn by suction or negative pressure, a second chamber into which the water from the first chamber can be forced by a pumping action or positive pressure, whereby the water is initially passed across a pre-filter secured over the inlet to the first chamber and having a very small pore size and an inner cavity in which a disinfecting agent is place to filters most contaminants before the water is drawn into said filtering device, and once in the first holding chamber the water is isolated and may be further treated with a disinfectant agent, and then is passed though at least additional filtering substance including an activated carbon or nano-filter.