Abstract:
PROBLEM TO BE SOLVED: To provide a descrambling method of video signal which carries out to secure a visible content to some extent while enabling to scramble of a video content. SOLUTION: The method of scrambling video signal S using cryptographic key K T is disclosed in order to control especially about access to audiovisual information. Video signal is scrambled by applying tattooing function (38) to video signal by using marking keys 36 derived from cryptographic key. The tattooing function comprises parameter for modulating magnitude of tattooing in order to enable regulation of the visibility of tattooing in video signal. There are provided the descrambling method of duality, and a system for a coder, a decoder, a broadcast server, and a data medium for performing about above-mentioned method. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a method for protecting a communication terminal (4) connecting to a module (5) used for identifying the user of a communication terminal.SOLUTION: A method includes: steps (10, 11) of securely loading a first program having a data collation key onto an identification information module; a step (12) of securely loading a second program linked with the first program onto a communication terminal; a transmission step (13) of transmitting a data collation key corresponding to the data collation key of the first program to the second program; a step of causing the communication terminal to store the transmitted collation key in a secure storage zone of the communication terminal; and a step (17) of transmitting, from the first program, an individual response to a request (step 14) from the second program only when verifying (steps 15, 16) that the second program effectively holds the data collation key.
Abstract:
PROBLEM TO BE SOLVED: To provide a system and a method for submitting a message (MSG) to a telecommunications terminal (2) of an addressee, the message having been deposited by a caller in an inbox (12) of a messaging server (1) of the addressee.SOLUTION: The method includes a step of sending a request to search for an illustration (8) from a server to a directory device (3), a step of sending said illustration (8) from the directory device (3) to the server, a step of sending the message (MSG) and the illustration (8) from the server to a multimedia messaging server centre (MMSC), and sending a multimedia message (MMS) including the message and the illustration from the MMSC to the directory device.
Abstract:
PROBLEM TO BE SOLVED: To provide an encoding method capable of readily coping with the variations in the transmission band of a network. SOLUTION: The encoding method encodes an image with a hierarchical mesh related to the image and encodes the mesh by the wavelet. One encoding method includes the use of at least two kinds of wavelets which are selectively applied to the various regions of images. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To perform pattern recognition in a simplified mode. SOLUTION: This pattern recognition method successively performs a pattern detection step 2, a characterization step 3 of characterizing the pattern obtained in the pattern detection step 2, and a recognition step 4 of the pattern obtained in the characterization step 3, wherein the pattern characterization step is used to obtain invariant descriptors of a pattern D F (p, q) in a Fourier-Mellin space when M F (p, q) is considered as Fourier-Mellin transform of the pattern and p, q are considered as coefficients indicating invariant of the pattern corresponding to each of rotation and scale change. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve a problem caused by encoding and decoding of permutation codes in the encoding/decoding of digital signals. SOLUTION: The invention relates to the encoding/decoding of digital signals, especially using permutation codes involving a calculation of combinatorial expressions. The combinatorial expressions are represented by prime factor power decompositions, and determined by a preliminary reading of pre-recorded representations of selected integers. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of compressing a hierarchical tree of describing a multimedia signal. SOLUTION: The tree includes nodes and leaves correlated with at least two definite type contexts, and content compression for at least some of the leaves is executed by at least two compression-coding techniques with each thereof correlated selectively with at least one of content types. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and system for providing navigable search results. SOLUTION: Embodiments include steps of:(1) receiving input indicative of a character in a search query so as to formulate an initial search query; (2) reviewing each of the sets of data records to identify records matching the initial search query; (3) for a set of data having a record matching the initial search query, creating a selectable object in the display, each selectable object having a display mode associated therewith, the display mode displaying a search results listing comprising matching records in the display; and (4) appending the matched record to a search results listing corresponding thereto. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and device for controlling an echo cancellation filter. SOLUTION: This method of controlling an echo cancellation filter (36) comprises: determining (22) coefficients (H1) of an adaptive filter (42) representative of an acoustic channel between an acoustic signal emitted and a microphone signal; temporal smoothing (24) of the coefficients of the adaptive filter; determining (26) an estimated echo (z 2 (n)) by filtering the acoustic signal (x(n)) emitted with the smoothed coefficients; estimating properties of the estimated echo; estimating the same properties on the microphone signal (y(n)); comparing between the properties of the estimated echo and the properties of the microphone signal so as to evaluate the presence of a signal (pu(n)) other than an echo signal (z(n)) in the microphone signal; and controlling the filter for canceling an echo in the microphone signal, as a function of the comparison. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To avoid disadvantages of conventional RSA techniques in both security and performance, regarding a method, system and device designed to prove the authenticity of an entity or the integrity of a message. SOLUTION: The proof is established by: (m) pairs of private Q i and public G i =g i 2 (m≥1); a public module (n) formed by the product of (f) prime factors (f>2); an exponent v=2 k (k>1), linked by the relationship of G i Q i v ≡1mod n or G i ≡Q i v mod n. COPYRIGHT: (C)2008,JPO&INPIT
解决方案:证明是通过以下方式建立的:(m)私人Q i SB>和公开G i SB> 2 SP>(M≥1); 由(f)素因子(f> 2)的乘积形成的公共模块(n); 指数v = 2 k SP>(k> 1),通过G S SP> V SP> ≡1modn或G ≡≡≡≡≡≡≡>>>>。。。。。 版权所有(C)2008,JPO&INPIT