| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 380287000 | ELECTRIC SIGNAL MODIFICATION | 69 |
| 20080232600 | Transaction Device with Noise Signal Encryption - A transaction device adds or injects a random noise component into signals representing (x,y) coordinate signals associated with user interface with an input screen associated with the device. The noise component can be generated by converting to analog the output of a random number generator, and then adding the noise component to the x-axis and/or y-axis component of the (x,y) coordinate signal. Alternatively the noise component can be injected into the x-axis and/or y-axis operating potential for the input screen. The result is a masking of the original (x,y) positional information. The randomly generated number is only available internal to the device. The device can use this number to de-crypt the true (x,y) signals, which signals can then be re-encrypted before transmitting from the device. | 09-25-2008 |
| 20080267412 | Method and Apparatus for Embedding Auxiliary Information in a Media Signal - The invention relates to a system for embedding auxiliary information in a media signal such as an audio visual signal. An apparatus comprises a quantization index modulator ( | 10-30-2008 |
| 20090060202 | Ternary and Higher Multi-Value Digital Scramblers/Descramblers - Ternary (3-value) and higher, multi-value digital scramblers/descramblers in digital communications. The method and apparatus of the present invention includes the creation of ternary (3-value) and higher value truth tables that establish ternary and higher value scrambling functions which are its own descrambling functions. The invention directly codes by scrambling ternary and higher-value digital signals and directly decodes by descrambling with the same function. A disclosed application of the invention is the creation of composite ternary and higher-value scrambling devices and methods consisting of single scrambling devices or functions combined with ternary or higher value shift registers. Another disclosed application is the creation of ternary and higher-value spread spectrum digital signals. Another disclosed application is a composite ternary or higher value scrambling system, comprising an odd number of scrambling functions and the ability to be its own descrambler. | 03-05-2009 |
| 20090080665 | Method of Generating Secure Codes for a Randomized Scrambling Scheme for the Protection of Unprotected Transient Information - In many instances it is necessary to store and transfer information and data on a temporary basis. Typically this information and data is transient but is vulnerable to capture and piracy as it is not in an encrypted state. Therefore a unique method is disclosed that performs randomized scrambling of unprotected digital information that make it unreadable, or otherwise unusable, without the appropriate descrambling. In order to be effective and secure the method requires a large population of scrambling patterns, or codes, and assigns them index numbers. Scrambling patterns are randomly chosen for use in the scrambling of the information and data. Unique schemes for developing this large population of patterns and choosing at random the usable set at each interval or usage. In particular the method is useful in the protection of digital content. | 03-26-2009 |
| 20090122992 | Method and Apparatus for Encrypting Encoded Audio Signal - Advanced solutions for encrypting multi-layer audio data are required, ie. audio data that comprise a base layer and one or more enhancement layers. A method for encrypting such an encoded audio signal comprises separating the base layer into two sections, encrypting the side information within frames of the second section of the base layer, and encrypting at least a part of the data of the enhancement layer, wherein the encrypted section of the base layer and the encrypted enhancement layer require different decryption keys for decryption. Thus, free preview zones are possible to implement. | 05-14-2009 |
| 20090185692 | System and Method of Retrieving a Watermark Within a Signal - A system and method of retrieving a watermark in a watermarked signal are disclosed. The watermarked signal comprises odd and even overlapped blocks where the watermark is contained in the even blocks. The method comprises, for each k-th even block, subtracting the two adjacent odd numbered blocks from the k-th even block of the watermarked signal to retrieve | 07-23-2009 |
| 20090196427 | SYSTEM AND COMPUTER PROGRAM PRODUCT FOR PROTECTING AUDIO CONTENT - Techniques for protecting information in an audio file are provided. The techniques include obtaining an audio file, detecting information beating one or more segments in a speech signal, wherein the information comprises information sought for protection, encrypting the information sought for protection by scrambling the one or more segments using a scrambling filter, and selectively decrypting an amount of the encrypted information, wherein the amount of the encrypted information to be decrypted depends on user access privilege, and wherein selectively decrypting the amount of the encrypted information protects said amount of the encrypted information. Techniques are also provided for protecting information in an audio file. | 08-06-2009 |
| 20090252332 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method for generating a downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence determined by a first synchronization signal; generating a second scrambling sequence determined by a first short sequence and a third scrambling sequence determined by a second short sequence; scrambling the first short sequence with the first scrambling sequence; scrambling the second short sequence with at least the second scrambling sequence; scrambling the second short sequence with the first scrambling sequence; scrambling the first short sequence with at least the third scrambling sequence; and mapping one second synchronization signal including the first short sequence scrambled with the first scrambling sequence and the second short sequence scrambled with at least the second scrambling sequence and another second synchronization signal including the second short sequence scrambled with the first scrambling sequence and the first short sequence scrambled with at least the third scrambling sequence in the frequency domain. | 10-08-2009 |
| 20090252333 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method for generating a downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence determined by a first synchronization signal; generating a second scrambling sequence determined by a group to which the first short sequence belongs, the wireless communication system using a plurality of short sequences and the plurality of short sequence being divided into a plurality of groups; scrambling the first short sequence with the first scrambling sequence; scrambling the second short sequence with at least the second scrambling sequence; and mapping a second synchronization signal including the scrambled first short sequence and the scrambled second short sequence in the frequency domain. | 10-08-2009 |
| 20090252334 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence; scrambling the first short sequence with the first scrambling sequence and scrambling the second short sequence with the second scrambling sequence and the third scrambling sequence; and mapping the secondary synchronization signal that includes the scrambled first short sequence and the scrambled second short sequence to a frequency domain. | 10-08-2009 |
| 20090252335 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by the first short sequence and a fourth scrambling sequence determined by the second short sequence; scrambling the first short sequence with the first scrambling sequence and scrambling the second short sequence with the second scrambling sequence and the third scrambling sequence; scrambling the second short sequence with the first scrambling sequence and scrambling the first short sequence with the second scrambling sequence and the fourth scrambling sequence; and mapping the secondary synchronization signal that includes the first short sequence scrambled with the first scrambling sequence, the second short sequence scrambled with the second scrambling sequence and the third scrambling sequence, the second short sequence scrambled with the first scrambling sequence and the first short sequence scrambled by the second scrambling sequence and the fourth scrambling sequence to a frequency domain. | 10-08-2009 |
| 20090252336 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence and a second scrambling sequence determined by the primary synchronization signal; generating a third scrambling sequence determined by a short sequence group-a wireless communication system uses a plurality of short sequences and the plurality of short sequences are grouped into a plurality of short sequence group-to which the first short sequence is assigned; scrambling the first short sequence with the first scrambling sequence and scrambling the second short sequence with the second scrambling sequence and the third scrambling sequence; and mapping the secondary synchronization signal that includes the scrambled first short sequence and the scrambled second short sequence to a frequency domain. | 10-08-2009 |
| 20090262944 | SCRAMBLING OF DATA AND REFERENCE SYMBOLS - The invention relates to a method for scrambling a sequence of symbols comprising at least two reference symbols (R | 10-22-2009 |
| 20090285402 | Service induced privacy with synchronized noise insertion - A mechanism is disclosed for protecting the privacy of communication content by means of a synchronized noise insertion process operated by counterpart sending and receiving devices. In send mode, a synchronized noise pattern is introduced by a sending device onto a source content, rendering the source content unreadable (or at least partially obfuscating the source content so as to inhibit interception of the content); and in receive mode, a corresponding pattern is introduced 180-degrees out of phase so as to effectively subtract the synchronized noise pattern and yield the original source content. In such manner, communication privacy is achievable without encrypting, encoding or transforming the source content at the sending or receiving device. | 11-19-2009 |
| 20100074448 | METHOD AND APPARATUS FOR TRANSMITTING SIGNAL - A signal transmitting method according to an exemplary embodiment of the present invention includes channel-coding broadcasting channel information by using a first scrambling code in a first frame within a broadcasting channel information updating period including a plurality of frames, and channel-coding the broadcasting channel information by using a second scrambling code in a second frame within the broadcasting channel information updating period. The second scrambling code is different from the first scrambling code. | 03-25-2010 |
| 20100098257 | Method and Apparatus for Performing Constellation Scrambling in a Multimedia Home Network - Systems and methods are provided that allow multiple transmitting network devices to transmit under an orthogonal frequency divisional multiple access (OFDMA) mode to a receiving network device. The multiple transmitting network devices may be configured to perform constellation scrambling on the symbols they will be transmitting using a predetermined scrambling sequence. They may be further configured to synchronize their use of the sequence, for example, by advancing the sequence for each available subcarrier, such that the receiving device may view the payload as if it were sent by a single transmitter. Accordingly, these multiple transmissions may be descrambled using only one instance of a sequence generator. | 04-22-2010 |
| 20100150354 | LOW I/O BANDWIDTH METHOD AND SYSTEM FOR IMPLEMENTING DETECTION AND IDENTIFICATION OF SCRAMBLING CODES - A system for detecting and identifying the identity of a base station or cell which transmits a scrambling code is provided. According to one aspect of the system, the system is used to perform scrambling code detection of eight (8) primary cells (each scrambling code's X-component being spaced sixteen (16) chips apart) in a group. According to another aspect of the system, a single scrambling code generator is used to generate a master scrambling code. The master scrambling code is then used to create individual scrambling codes which are used in correlation with received signals to detect in parallel which one of the eight (8) possible primary cells in the group transmitted the received signals. According to yet another aspect of the system, each of the correlators maintains a corresponding X-component segment of the master scrambling code. For every sixteen (16) chips, a new X-component segment of the master scrambling code is introduced into one of the correlators, a X-component segment of the master scrambling code is dropped from another correlator, and X-component segments of the master scrambling code are sequentially shifted or propagated through the remaining correlators; and concurrent correlations are performed by the correlators using their respective corresponding X-component segments of the master scrambling code and newly received signals. | 06-17-2010 |
| 20100158256 | BASE STATION AND DOWNLINK CHANNEL TRANSMISSION METHOD - Under a sectorized cell architecture in a mobile communication system, a scrambling code applied to multiplication of a transmission signal is selected and switched among different types of downlink physical channels in a unified manner. One of multiple transmission signals to be transmitted on a corresponding one of the different types of downlink physical channels is generated. A first code is selected according to the type of the physical channel to enable multiplying the transmission signal by the first code. The transmission signal is multiplied by an intracell common scrambling code used in common among sectors in a same cell in addition to or in place of the multiplication of the first code. The transmission signal multiplied by at least one of the first code and the intracell common scrambling code is transmitted on the corresponding physical channel. | 06-24-2010 |
| 20100195835 | LINK AND PHYSICAL CODING SUB-LAYER PROTOCOLS - An approach to data communication makes use of a protocol for encoding data on a serial link that provides both a run length limiting function and a frame marking function, while minimizing communication overhead over the data bearing portions of the signal, and while limiting latency introduced into the communication. In some examples, a single bit is added as a frame marker in such a way that a single bit frame marker also limits run length. | 08-05-2010 |
| 20100232608 | OCDM-BASED PHOTONIC ENCRYPTION SYSTEM WITH PROVABLE SECURITY - In an OCDM-based photonic encryption system by applying random noise on unused channels and varying the inter-code phases on realistic framing repetition, an OCDM-based encryption system with provable security guarantees results. | 09-16-2010 |
| 20100260340 | COMMUNICATION SYSTEM, RESPONSE NOTIFYING METHOD AND APPARATUS - To solve a problem that unless all of a plurality of AICH signature states are correctly decoded, the contents of reception results cannot be recognized and the error rate of signature decoding will be high. In this embodiment, a base station uses, out of a signature combination, the signature of at least one predetermined position to indicate information containing a preamble reception result and uses the signature of a position other than the predetermined position to indicate a transmission profile information number of an uplink channel for notification to a user equipment. Thus, the error rate related to reception results can be reduced as compared with the case where a single signature combination is used to notify all pieces of information. | 10-14-2010 |
| 20100272268 | ENHANCED HIGH-SPEED DOWNLINK SHARED CHANNEL SERVING CELL CHANGE PROCEDURES - Serving cell change procedures are provided from a target cell that instructs a mobile device to change its serving cell to the target cell. Receiving the serving cell change instruction from the target cell can help mobile device to receive the instruction in areas were a signal from a current serving cell is rapidly deteriorating. An acknowledgement can be sent from mobile device to target cell and can be based on a scrambling code change and/or can be based on a CQI | 10-28-2010 |
| 20110019827 | INFORMATION PROCESSING APPARATUS - An information processing apparatus includes: a plurality of digital broadcast stream data descramblers configured to receive broadcast streams and to output descrambled data by descrambling the broadcast streams; a block data buffer configured to buffer access requests output from the digital broadcast stream data descramblers to a B-CAS card per B-CAS access block units; and an arbiter configured to arbitrate the B-CAS card access requests. | 01-27-2011 |
| 20110044456 | Activation of Code Multiplexing - The present invention relates to a system and a method for transmitting data between a first terminal and a communication network access point. The method may comprise the steps of defining a first set of scrambling codes and a second set of scrambling codes different from the first set of scrambling codes. Further, the method may comprise defining a first selection scheme for a first parameter. The method may still further comprise determining a current parameter value for the first parameter and evaluating the current parameter value on the basis of the first selection scheme and selecting a scrambling code from the first set of scrambling codes or the second set of scrambling codes based on the evaluation. Even further, the method may comprise packaging and transmitting data between the first terminal and the communication network access point using the selected scrambling codes. | 02-24-2011 |
| 20110051934 | DATA RECEIVING DEVICE, DATA RECEIVING METHOD AND PROGRAM - A data receiving device includes an elastic buffer which receives data as receiving data and adjusts timing with a sender, the data being scrambled and sent from the sender, an interpolation circuit which performs predetermined interpolation processing on the data subjected to timing adjustment by the elastic buffer to output the data, and a descramble circuit which descrambles the data output from the interpolation circuit. The receiving data includes data set for adjusting timing. The data set is for adjusting timing with the sender. The interpolation circuit replaces existing data with data for adjusting timing and outputs the data for adjusting timing as required after first receiving normal data for adjusting timing so that a desired number of data for adjusting timing is included in the data set for adjusting timing. | 03-03-2011 |
| 20110064227 | REPRODUCING APPARATUS, RECORDING APPARATUS AND DISPLAY APPARATUS - A system effecting a data reproducing method for a plurality of devices, for sending and receiving data by authenticating the plurality of devices with each other, said data reproducing method including: selecting, from a plurality of descrambling methods, a descrambling method corresponding to a type of said data, executing authentication by an authenticating method corresponding to the selected descrambling method, where the authenticating method is selected from a plurality of authenticating methods, and reproducing said data. | 03-17-2011 |
| 20110069840 | DIGITAL TO ANALOG CONVERTER SYSTEM AND METHOD WITH MULTI-LEVEL SCRAMBLING - Tri-level scrambling in a digital to analog converter system is achieved by, in response to a tri-level binary code input, disabling a negative data directed scrambler circuit when the input code is in the positive cycle portion, disabling a positive data directed scrambler circuit when the input code is in the negative cycle portion and disabling both scrambler circuits upon a zero input code for reducing low level distortion due to a reversal of current during crossover between those cycles. | 03-24-2011 |
| 20110081021 | SCRAMBLING APPARATUS AND METHOD OF OPERATING THE SAME - There is provided a scrambling apparatus and a method of operating the same. A scrambling apparatus according to an aspect of the invention may include: a memory unit storing and providing a plurality of previously generated scrambling initial state codes; and a scrambling unit reading at least one of the plurality of scrambling initial state codes stored in the memory unit to generate a scrambling code in order to scramble an input signal, so that scrambling speed can be significantly increased. | 04-07-2011 |
| 20110170697 | Ternary and Multi-Value Digital Signal Scramblers, Decramblers and Sequence Generators - Reversible and self reversing multi-value scrambling functions created by applying multi-value inverters are disclosed. The generation of possible multi-value inverters is also presented. Corresponding multi-value descrambling functions are also disclosed. The multi-value functions are used in circuits that scramble and descramble multi-value signals. The multi-value functions can also be used in signal generators. Such signal generators do not require the use of multipliers. The auto-correlation of the signals generated by the signal generators is also presented. Electronic circuits that implement the multi-value functions are also described. | 07-14-2011 |
| 20110206207 | PAPR REDUCTION IN MULTI-CARRIER TRANSMISSION - A multi-carrier data communication is selectively operable in one of different communication modes which result in differently structured communication signals, the communication being configured for processing a data item intended to be transmitted to generate different transmission candidate data; selecting one of the transmission candidate data for transmission; selecting one of the communication modes based on the selected data item; and transmitting the selected data item using the selected communication mode. | 08-25-2011 |
| 20110228943 | Data Embedding System - A system and method for embedding data is provided. The method comprises dividing the host data set into a plurality of blocks, wherein each block comprises a plurality of elements, generating a pattern connecting the elements of each block; and embedding data on the elements of block based on the pattern. | 09-22-2011 |
| 20110299688 | HIGH SPEED DIGITAL TO ANALOG CONVERTER WITH REDUCED SPURIOUS OUTPUTS - A system includes a first circuit including a scrambling module that receives N digital data streams and that scrambles the N digital data streams using a scrambling sequence. A data bus receives the N scrambled digital data streams and the scrambling sequence. A second circuit communicates with the data bus and includes a first processing module that processes the N scrambled digital data streams and that outputs M digital data streams, where M and N are integers greater than one. The second circuit includes one or more descrambling and processing modules that receive the M digital data streams, that descramble the M digital data streams based on the scrambling sequence, and that further process the M digital data streams. The second circuit includes a digital to analog converter (DAC) module that receives an output of the one or more descrambling and processing modules. | 12-08-2011 |
| 20110311056 | FORENSIC MARKING USING A COMMON CUSTOMIZATION FUNCTION - Methods, systems, and apparatus are disclosed which enable flexible insertion of forensic watermarks into a digital content signal using a common customization function. The common customization function flexibly employs a range of different marking techniques that are applicable to a wide range of forensic marking schemes. These customization functions are also applicable to pre-processing and post-processing operations that may be necessary for enhancing the security and transparency of the embedded marks, as well as improving the computational efficiency of the marking process. The common customization function supports a well-defined set of operations specific to the task of forensic mark customization that can be carried out with a modest and preferably bounded effort on a wide range of devices. This is accomplished through the use of a generic transformation technique for use as a “customization” step for producing versions of content forensically marked with any of a multiplicity of mark messages. | 12-22-2011 |
| 20120099730 | RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, TERMINAL APPARATUS, AND RADIO COMMUNICATION METHOD IN RADIO COMMUNICATION SYSTEM - A radio communication system, including: a first and second base station apparatuses which includes one or plurality of cells or sectors, respectively; and a terminal apparatus, wherein each of the first and second base station apparatuses includes: a processing unit which executes scrambling processing on a first and second transmission data that are different from each other for each cell or sector by using a first and second scrambling codes having a predetermined phase difference respectively, when the first and second transmission data are to be transmitted to the terminal apparatus respectively; and a transmission unit which transmits the first and second transmission data processed by the scrambling processing to the terminal apparatus respectively, and the terminal apparatus includes a reception unit which executes descrambling processing on the first and second transmission data by using the first and second scrambling codes respectively. | 04-26-2012 |
| 20120134498 | REPRODUCING APPARATUS, RECORDING APPARATUS AND DISPLAY APPARATUS - An authentication method for use in sending/receiving data between a coded data output apparatus for outputting coded data having a water mark, and a recording apparatus for recording data onto a recording medium, the method including: deciding a type of the recording medium used by the recording apparatus; based on a result of the deciding, selecting, from a plurality of authentication methods, an authentication method corresponding to the type of the recording medium, and conducting authentication between the coded data output apparatus and the recording apparatus, using the authentication method; sending/receiving data between the coded data output apparatus and the recording apparatus after conducting the authentication; and in a case where the coded data has the water mark, detecting the water mark by the coded data output apparatus, wherein the data exchanged between the coded data output apparatus and the recording apparatus is scrambled by a scrambling method corresponding to the type the recording medium. | 05-31-2012 |
| 20120155648 | Methods and Apparatus for Synchronization of Data Frames - In accordance with an example embodiment of the present invention, a first bit sequence of a first length is assigned to a first group of signaling bits. Further, a second bit sequence of a second length is assigned to a second group of signaling bits. The first bit sequence is scrambled with a first scrambling sequence, and the second bit sequence is scrambled with a second scrambling sequence different from the first scrambling sequence. A first and a second orthogonal frequency-division multiplexing (OFDM) symbol are assigned to the first and the second scrambled bit sequences respectively, and the first and second orthogonal frequency-division multiplexing (OFDM) symbols are transmitted as synchronization symbols of a data frame. Further, a corresponding method for receiving the data frame, and apparatuses for transmission and reception are disclosed. | 06-21-2012 |
| 20120163604 | METHOD AND DEVICE FOR ESTABLISHING NETWORK CONNECTION - A device for establishing network connection is disclosed, having a transmitting circuit, a receiving circuit, and a controller. The transmitting circuit, comprising a first scrambler having a plurality of first registers, transmits a first data scrambled by the first scrambler to a transmission line according to an oscillating signal generated by an oscillation circuit. The receiving circuit receives a second data scrambled by a second scrambler from the transmission line and comprises a descrambler having a plurality of second registers for descrambling the second data. The first and the second scramblers use the same scrambler generator polynomial. The controller compares at least one of the first data and the value of the first registers and at least one of the second data and the values of the second registers for configuring the oscillation circuit to adjust the frequency of the oscillating signal. | 06-28-2012 |
| 20120163605 | Method For Page- And Block Based Scrambling In Non-Volatile Memory - A method and system for programming and reading data with reduced read errors in a memory device. In one approach, date to be written to the memory device is scrambled using a first pseudo random number which is generated based on a number of a page of the memory device to which the data is to be written and a second pseudo random number which is generated based on a number of a block of the memory device to which the data is to be written. This avoids bit line-to-bit line and block-to-block redundancies which can result in read errors. The data may also be scrambled based on a number of a section within a page. | 06-28-2012 |
| 20120170754 | METHOD FOR DETECTING THE SCRAMBLING OF A RADIOCOMMUNICATION NETWORK, AND CORRESPONDING STORAGE MEANS AND CIRCUIT - A method is provided for detecting scrambling of a radiocommunication network. The method is applied by a radiocommunication circuit capable of being connected to the network by being synchronized on a radiocommunication channel. The method includes a final detection phase, having the following steps: detection of verification of the following final condition: there are N radiocommunication channels on which the radiocommunication circuit cannot be synchronized despite detection of a power level normally sufficient for being synchronized, where N>2; and if the final condition is verified, generation of a final scrambling signal with a probability of scrambling equal to 100%. The method also includes at least one intermediate detection phase, having the following steps: detection of verification of at least one intermediate condition; and if the at least one intermediate condition is verified, generation of an intermediate scrambling signal with a probability of scrambling of less than 100%. | 07-05-2012 |
| 20120189126 | MAPPING SCHEMES FOR SECONDARY SYNCHRONIZATION SIGNAL SCRAMBLING - Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal. The transmitter further includes a transmit unit configured to transmit the primary synchronization signal and the scrambled secondary synchronization signal. | 07-26-2012 |
| 20120201384 | ADAPTIVE AND PROGRESSIVE AUDIO STREAM SCRAMBLING - A process for distributing digital audio sequences according to a nominal stream format that include a succession of frames, each of which includes at least one digital audio block grouping a plurality of coefficients corresponding to digitally coded audio elements, including modifying at least one block of an original stream of sequences, in an adaptive manner on the original stream as a function of at least a part of characteristics representative of the structure, content and parameters of the original stream, a target profile and external events. | 08-09-2012 |
| 20120207306 | On-Demand Download of Partial Encrypted Content for Partial Super Distributed Content - A request to render content associated with a first super distributed content file is detected by a content rendering device. At least one portion of the content associated with the first super distributed content file is determined to be missing from the first super distributed content file. A second file including the at least one portion of the content missing from the first super distributed content file is obtained from a server. The at least one portion of the content of the second file includes partial encrypted portions of the content associated with an encryption system of the content rendering device. A content output stream including decrypted partial encrypted portions of the content of the second file and the content associated with the first super distributed content file is generated. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract. | 08-16-2012 |
| 20120213373 | METHODS AND APPARATUS TO SECURE COMMUNICATIONS IN A MOBILE NETWORK - Methods and apparatus to secure communications in a mobile network are disclosed. An example method disclosed herein comprises randomizing a first set of bits associated with information to be communicated over a slow associated control channel by applying a scrambling factor to generate a set of scrambled bits equal in length to the first set of bits. Another example method disclosed herein comprises concatenating a set of error detection bits with a set of information bits associated with information to be transmitted over a slow associated control channel to generate a set of coded bits, and shuffling the set of coded bits to generate a set of shuffled bits. | 08-23-2012 |
| 20120213374 | DATA RECEIVING APPARATUS, DATA RECEIVING METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING PROGRAM - A receiving apparatus according to the present invention is able to normally decode reception data even when a part of an initialization symbol during training is corrupted. The receiving apparatus includes an initialization signal generation unit that generates an initialization signal, and a descrambling circuit that descrambles reception data by a descrambler initialized by the initialization signal. The reception data includes a training data set for establishing connection of high-speed serial communication, the training data set including one or more TSn ordered sets. The TSn ordered set includes one or more COM symbols and one or more pieces of data other than COM symbols. The initialization signal generation unit generates the initialization signal at an initialization last timing at which at least the last COM symbol among the COM symbols forming the last TSn ordered set included in the training data set is input to the descrambling circuit. | 08-23-2012 |
| 20120219154 | STEALTH MESSAGE TRANSMISSION IN A NETWORK - Embodiments of the invention include methods of transmitting a hidden message within a secured primary data transmission. In one embodiment, a method involves transmitting a primary data transmission over a computer network from a source host to a receiving host. Intentionally-corrupted packets are introduced within the primary data transmission in a manner providing a hidden message. For example, a pattern of intentionally-corrupted packets may be used to encode the hidden message. Alternatively, the hidden message may be embedded within the data area of the intentionally-corrupted packets. The intentionally-corrupted packets are received and interpreted at the receiving host to determine the hidden message. | 08-30-2012 |
| 20120219155 | METHODS AND DEVICES FOR ALLOCATING SCRAMBLING CODES - Methods and devices are provided whereby scrambling codes can be set in an improved way. In accordance with one embodiment a method is provided in a User Equipment for generating a second scrambling code or a second scrambling code group. The UE is configured for multi carrier operation receiving downlink transmission from a Universal Mobile Telecommunications System Terrestrial Radio Access Network on a set of at least two downlink carriers including an anchor carrier and at least a first secondary carrier. The method comprises determining a first scrambling code or a first scrambling code group associated with a first cell on the anchor carrier; and deriving a second scrambling code or a second scrambling code group associated with a second cell on said first secondary carrier using a predefined rule defining the relation between the second scrambling code or second scrambling code group and the first scrambling code or scrambling code group. Hereby interference suppression/cancellation processing is enabled in a receiver of a UE on secondary cells in multi-carrier scenarios that do not transmit the SCH, while minimizing the need for overhead in terms of signaling of the scrambling codes for neighbouring cells in a UTRAN system. Methods and devices for E-UTRAN are also described. | 08-30-2012 |
| 20120224697 | METHOD AND TERMINAL FOR IMPLEMENTING HOT-PLUG OF SMART CARD - A method and terminal for implementing hot-plug of a smart card are disclosed. The method includes: during the process of playing mobile multimedia, a descrambling library sending request information for obtaining a program key to a smart card driving module, which judges whether a smart card is in a plug-in state or a pull-out state after receiving the request information: if in the plug-in state, the smart card driving module forwarding the request information to the smart card, receiving response information returned by the smart card, forwarding the response information to the descrambling library, and meanwhile forwarding the response information to a virtual smart card module to save; if in the pull-out state, the smart card driving module forwarding the request information to the virtual smart card module, which returns the saved response information to the smart card driving module, which forwards the response information to the descrambling library. | 09-06-2012 |
| 20120237036 | COMMUNICATING SCRAMBLING SEED INFORMATION - A method of communicating scrambling seed information includes obtaining raw data to be transmitted using a processor, and generating scrambled data from the raw data according to a scrambling seed. A scrambled data packet structure is configured by combining a preamble portion, a synch portion, and a header portion to the scrambled data, wherein the header portion includes a scrambler field value including a plurality of bits (M). The scrambled data packet structure is transmitted to a receiver. The receiver receives the header portion including the scrambler field value. The receiver maps the scrambler field value to a scrambling seed, and decodes the scrambled data using the scrambling seed. | 09-20-2012 |
| 20120288097 | CONTENT DISTRIBUTION SYSTEM, MANAGEMENT APPARATUS, AND MOBILE TERMINAL - A management apparatus includes a collector configured to collect requests of events of which the distribution is required via the network from users of the plurality of terminals, a list generator configured to aggregate the collected requests for each event to generate a list, a disclosure unit configured to disclose the list on a site on the network for a predetermined period, a reception unit configured to receive a request for distributions from a plurality of content distributors via the site for each content included in the list, a selector configured to select a content distributor to which a distribution right is granted from among the plurality of content distributors for each content included in the list based on a predetermined conditions, and a reporter configured to report a selection result by the selector to content distributor with the distribution right granted thereto. | 11-15-2012 |
| 20120314869 | PHYSICAL LAYER FRAME FORMAT FOR LONG RANGE WLAN - A preamble portion of a physical layer (PHY) data unit is generated for transmission via a long range communication protocol. A service field is generated with a length of eight or less bits. A data portion of the PHY data unit is generated to include the service field having the length of eight bits or less. | 12-13-2012 |
| 20120314870 | METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL - The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes generating a first sequence and a second sequence for identifying cell groups; generating a first scrambling sequence and a second scrambling sequence that are one-to-two mapped to the sequence number of the primary synchronization signal; scrambling the first sequence with the first scrambling sequence and scrambling the second sequence with the second scrambling sequence; and generating a secondary synchronization signal including the scrambled first sequence and second sequence and mapping the secondary synchronization signal to a frequency domain. | 12-13-2012 |
| 20130003979 | APPARATUS AND METHOD FOR GENERATING MULTIPLE OUTPUT SEQUENCE - Provided are an apparatus and method for generating a multiple output sequence. The apparatus includes an update unit configured to update a first shift register having k stages by inputting a value to the first shift register at every clock, a transfer unit configured to simultaneously transfer, at every clock, output values output from the first shift register to k stages of a second shift register respectively and output values output from k stages of the second shift register to k stages of a third shift register having the k stages respectively, and a multiple output generator configured to generate a multiple output sequence by outputting values of the k stages of the third shift register at every clock. | 01-03-2013 |
| 20130016841 | System and Method for Multi-Carrier Network Operation - Methods, devices, and systems for multi-carrier network operation are disclosed. In one embodiment, a method of performing channel scrambling in a multi-carrier network, wherein the multi-carrier network includes a first component carrier (“CC”) and a second CC between a base station and a user equipment (“UE”) comprises receiving a Cell Radio Network Temporary Identifier (“C-RNTI”) and a cell identification (“ID”) for at least one of the first CC and the second CC; and using the RNTI and the cell ID to perform scrambling of information transmitted on at least one of the first CC and the second CC. | 01-17-2013 |
| 20130195275 | RESOLVING UE REFERENCE SIGNAL PORT AMBIGUITIES - A resource allocation for a specific user equipment (UE) is encoded using an encoding scheme that identifies a specific antenna port from among a plurality of antenna ports; and the encoded resource allocation is output to the specific antenna port for transmission to the specific UE. The UE blindly detects its control channel and determines its resource allocation by decoding the control channel using a decoding scheme that identifies a specific antenna port from among the plurality of transmit antenna ports. In various embodiments, the scheme is in scrambling or masking (using an ID of the antenna port or UE); by the order of bits when encoding, port specific mapping constellations, and adding bits that give the port index. | 08-01-2013 |
| 20130202112 | PROTECTING OPTICAL TRANSPORTS FROM CONSECUTIVE IDENTICAL DIGITS IN OPTICAL COMPUTER NETWORKS - An example method includes encapsulating, by an optical network device, at least a portion of a data packet to form a passive optical network (PON) frame. The method further includes applying, by the optical network device, a scrambling polynomial to at least a portion of the PON frame to generate a scrambled PON frame. The method further includes determining, by the optical network device, that the scrambled PON frame comprises a consecutive identical digit (CID) sequence greater than a threshold length. The method further includes replacing, by the optical network device the determined CID sequence with a correction pattern to generate a modified scrambled PON frame. The method further includes transmitting, by the optical network device, the modified scrambled PON frame. | 08-08-2013 |
| 20130202113 | PROTECTING OPTICAL TRANSPORTS FROM CONSECUTIVE IDENTICAL DIGITS IN OPTICAL COMPUTER NETWORKS - In general, techniques are described for protecting optical networks from consecutive identical digit (CID) errors. An optical network device comprising a control unit and an interface may implement the techniques described in this disclosure. The control unit determines whether a data packet will result in a CID error prior to encapsulating at least a portion of the data packet to form a passive optical network (PON) frame and then, in response to the determination that the data packet will result in the CID error, modifies the data packet to form a modified data packet so that the modified data packet will not result in the CID error. The control unit encapsulates the modified data packet to form a PON frame. The control unit applies a scrambling polynomial to the PON frame to form a scrambled PON frame. The interface transmits the scrambled PON frame. | 08-08-2013 |
| 20130236020 | MEDIA STORAGE, MEDIA READER AND METHOD FOR READING CONTENTS OF THE MEDIA STORAGE IN THE MEDIA READER - A media storage device may store content adapted to be inserted in a media reader for reading the content. The content may be encrypted, and the media storage may include a smart object physically attached to the media storage and arranged to be read by a smart object reader of the media reader. The smart object may include security information for decrypting the content in the smart object reader. | 09-12-2013 |
| 20130315397 | SYSTEM AND METHOD TO SCRAMBLE DATA BASED ON A SCRAMBLE KEY - A data storage device includes a memory and a controller. The controller is configured to scramble data using a scramble key to produce scrambled data and to encode the scramble key to produce an encoded scramble key. The controller is further configured to store the encoded scramble key and the scrambled data to the memory. | 11-28-2013 |
| 20150358151 | COMPLEMENTARY RESISTANCE SWITCH, CONTACT-CONNECTED POLYCRYSTALLINE PIEZO- OR FERROELECTRIC THIN-FILM LAYER, METHOD FOR ENCRYPTING A BIT SEQUENCE - Disclosed is a complementary resistor switch ( | 12-10-2015 |
| 20160055770 | CONVERTING DEVICE AND DISPLAYING SYSTEM - A converting device and a displaying system is described, which can include: a first transmitting module, a first detecting module, a second detecting module, a conversion module, a first security module, and a second transmission module. The first transmitting module receives first information; the first detecting module determines whether the first information is encrypted information; if the first information is not encrypted, the second detecting module determines whether the first information is in a preset format; if yes, the first security module encrypts the first information to obtain first encrypted data and sends the first encrypted data to the second transmission module; and if not, the converting module converts the first information into first converted information in the preset format, and the first security module encrypts the first conversion information to obtain first encrypted and converted data and sends the first encrypted and converted data to the second transmission module. | 02-25-2016 |
| 20160065361 | ENDECRYPTOR PREVENTING SIDE CHANNEL ATTACK, DRIVING METHOD THEREOF AND CONTROL DEVICE HAVING THE SAME - An endecryptor and a control device are provided. The endecryptor includes a first SBOX configured to replace first input data with first substitution data, a transformation unit configured to replace the first input data with second substitution data and an output terminal configured to output encrypted or decrypted output data based on the first and second substitution data. | 03-03-2016 |
| 380022000 | Having magnetic record carrier (e.g., tape, drum) | 1 |
| 20100284531 | METHOD AND APPARATUS FOR ARTICLE AUTHENTICATION - An authentication method for authenticating an article in a device includes the steps of (a) reading an identification number stored on the article, (b) reading an authentication number stored on the article, (c) determining an input number based at least in part on the identification number, (d) applying an authentication function to the input number to calculate an output number, (e) determining that the article is authentic only if the authentication number corresponds to the output number, and (f) permitting use of the article in the device if the article is authentic, and disabling use of the article in the device if the article is not authentic. | 11-11-2010 |
| 380051000 | Having production of printed copy (e.g., printer, typewriter) | 4 |
| 20090129591 | Techniques for Securing Document Content in Print and Electronic Form - A technique for securing selected document content includes receiving, at a printer, an unsecured electronic document. Selected content of the electronic document is then encrypted, with an encryption key, at the printer. A paper document whose content includes the encrypted selected content of the electronic document is then printed. The encrypted selected content of the paper document is unintelligible prior to decryption with a decryption key. | 05-21-2009 |
| 20100054467 | IMAGE FORMING SYSTEM AND SECURITY PRINTING METHOD THEREOF - An image forming system and a security printing method of the image forming system. The security printing method of the image forming system may include receiving print data in an image forming apparatus, determining whether the received print data includes an authenticated encryption code, and if it is determined that the print data does not include the authenticated encryption code, forming an image to include an image to indicate that the print may not be a print by security print. The security printing method have an advantage of performing a print operation to print data authenticated by a host device with no security application or even in print performance by Direct Printing, with strengthened security. | 03-04-2010 |
| 20100142706 | IN-LINE DECRYPTION DEVICE FOR SECURELY PRINTING DOCUMENTS - A media content printing method that includes storing encrypted media content data representing media content in a computing device, generating a file of print commands that include the encrypted media content data non-encrypted commands for printing the media content based on the encrypted media content data, and sending the file of print commands to an intermediate device that stores a cryptographic key. The method further includes sending the non-encrypted commands to a printing device, determining if the media content is authorized to be printed, and decrypting the encrypted media content data in the intermediate electronic device that corresponds to the authorized media content to produce decrypted media content data. The decrypted media content data is sent to the printing device for printing the media content based on the non-encrypted commands and the decrypted media content. | 06-10-2010 |
| 20120219151 | PRINTING SYSTEM, PRINTING METHOD, TERMINAL, AND COMPUTER-READABLE STORAGE MEDIUM FOR COMPUTER PROGRAM - A printing system is provided with a terminal sending print data; a printer performing printing based on the print data; and a transfer device transferring the print data to the printer responding to a request from the printer. The terminal includes a transmission portion configured to, when communication with the transfer device is possible, send the print data to the transfer device, and configured to, when the communication is impossible, send the print data in association with a command for authentication print to the printer without via the transfer device. The printer includes a requesting portion configured to, when user authentication of a user of the terminal is successful, request the print data from the transfer device, and a printing portion configured to, when the user authentication is successful, perform the printing based on the print data received from the transfer device or the terminal. | 08-30-2012 |
| 380052000 | Including particular structure or housing (e.g., display, keyboard) | 3 |
| 20090154696 | System and Method for Secure Keypad Protocol Emulation in a Fuel Dispenser Environment - A system used in a retail environment, such as a fuel dispensing environment, for providing secure communication of payment information to a host computer. The system includes at least one keypad device configured to receive and encrypt personal information according to a first encryption scheme to produce encrypted personal data. The keypad device is further operative to generate a local zone emulated message in a message format of a second encryption scheme, the local zone emulated message containing the encrypted personal data. A site controller is in communication with the keypad device to receive the local zone emulated message. The site controller is configured to provide a message in the second encryption scheme to a security module for decryption and re-encryption in the first encryption scheme. An emulator is associated with the site controller to emulate the security module. In this regard, the emulator is operative to receive the local zone emulated message and return the encrypted personal data without decryption. The site controller provides the encrypted personal data to the host computer according to the first encryption scheme. | 06-18-2009 |
| 20100195825 | KEYSTROKE ENCRYPTION SYSTEM - A keyboard encryption system that enables encryption of keystrokes prior to their entry into a remote desktop. An encryption device is attached via a keyboard cable to a keyboard at one end and to a keyboard socket on a computer on the other end. A remote desktop connection allows for communication between the computer and a remote desktop server. The encryption device contains encryption software to encrypt each keystroke as it is received. The encryption device contains a unique serial number that allows it recognized by decryption software installed on the remote desktop server. The serial number is the primary key for the decryption software to decipher the encrypted keystrokes. | 08-05-2010 |
| 20130148804 | ANTI-PRYING ENCRYPTED KEYBOARD - An pry-proof encrypted keyboard. The encrypted keyboard comprises a keyboard panel ( | 06-13-2013 |
