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30results about How to "Efficiently concealed" patented technology

Error Conceal Device And Error Conceal Method

The conventional error conceal processing generates a greatly fluctuating irregular sound which is unpleasant to ears and causes a remarkable echo effect and click noise. A notification signal detection unit (301) judges processing for an input frame. In case of an error frame, a sound detection unit (303) makes judgment whether a preceding non-error data frame is a sound signal. If it is a sound frame, a sound copying unit (304) generates a replacing frame. If it is a non-sound frame, a transient signal detection unit (305) judges whether it is an attack signal by the transient signal detection and selects an appropriate area from the preceding non-error frame.
Owner:PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

Systems and Methods for Metadata Embedding in Streaming Medical Data

Systems and methods for embedding metadata such as personal patient information within actual medical data signals obtained from a patient are provided wherein two watermarks, a robust watermark and a fragile watermark are embedded in a given medical data signal. The robust watermark includes a binary coded representation of the metadata that is incorporated into the frequency domain of the medical data signal using discrete Fourier transformations and additive embedding. Error correcting code can also be added to the binary representation of the metadata using Hamming coding. A given robust watermark can be incorporated multiple times in the medical data signal. The fragile watermark is added on top of the modified medical signal containing the robust watermark in the spatial domain of the modified medical signal. The fragile watermark utilizes hash function to generate random sequences that are incorporated through the medical data signal.
Owner:IBM CORP

Methodology, system and computer readable medium for streams-based packet filtering

A packet filtering system for use with a host computer implementing a streams sub-system comprises a configuration component for maintaining a collection of configuration parameters based on user input, and a streams interface component for managing bi-directional transmission of packets according to the collection of configuration parameters. The configuration parameters may include sets of authorized port, protocol and address designations. The streams interface component preferably includes corresponding modules for port filtering, protocol filtering and address filtering whereby inbound and outbound packets which are not blocked by any of filtering modules are, respectively, passed upstream and downstream between an associated network device and the stream head. A computerized method for managing bi-directional transmission of packets, as well as a computer-readable medium having executable instructions for managing packet transmission, are also provided.
Owner:SYTEX

Remote Explosion Detonation System

InactiveUS20110174181A1Alleviate security issueQuickly implementIncandescent ignitionBlasting cartridgesVIT signalsEngineering
According to one embodiment of the disclosure, a remote explosive detonation system includes a transmitter and at least one receiver having a detonator. The transmitter transmits an electro-magnetic signal having a transmitter identification code that may be received by the receiver. The receiver initiates the detonator if the transmitter identification code matches an internal identification code stored in the receiver.
Owner:RAYTHEON CO

Print Substrate with a Scrambling Pattern for Concealing a Confidential Information Sequence

InactiveUS20080012288A1Sufficient magnificationImprove fitOther printing matterChange colourPrinting ink
The invention relates to stock comprising a masking field on which an information pattern can be printed in such a way that it can be recognised in front of the background of the masking field only once certain manipulations have been carried out. The aim of the invention is to increase the security of the confidential information. To this end, the following measures are carried out individually or as a combination: the masking field contains irregularly distributed colour points of between 50 and 400 μm, amounting to an entire surface area of between 0.3 and 0.5 cm2 per cm2; and / or the masking field consists of a plurality of superimposed printed layers; and / or the masking field is printed with a printing ink, of which at least 50% is concentrated in a masking field layer; and / or the masking field can be removed, at least partially and / or together with other layers, using an adhesive strip, with a peeling force of between 0.5 N / 50 mm and 2 N / 50 mm according to the Finat test method no. 1; and / or the stock is provided with a thermochromatic reagent which changes colour irreversibly under the effect of heat, from a temperature of 140°; and / or the stock is provided with a solvent-reactive reagent which changes colour irreversibly in a solvent atmosphere.
Owner:FOFITEC AG
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