Abstract: Partially homomorphic encryption systems may be transformed into fully homomorphic encryption systems that are scalable, rapid in translation speed, difficult to invert or break, capable of enabling various types of public and/or private key generation protocols and semantically secure. Input plaintext data are transformed into modified plaintext data using a prime number operation and the modified plaintext data is then encrypted using any number of conventional encryption schemes. Desired computations on the encrypted data are transformed into homomorphic operations, based on the nature of the encryption format, and the homomorphic operations are applied to yield manipulated encrypted data. The manipulated encrypted data may be decrypted and the decrypted plaintext data may be modified into final, output plaintext data using a similar prime number operation as applied during encryption.

Abstract: Partially homomorphic encryption systems may be transformed into fully homomorphic encryption systems. Input plaintext data are transformed into modified plaintext data using a prime number operation and the modified plaintext data is then encrypted using any number of conventional encryption schemes. Desired computations on the encrypted data are transformed into homomorphic operations, based on the nature of the encryption format, and the homomorphic operations are applied to yield manipulated encrypted data. The manipulated encrypted data may be decrypted and the decrypted plaintext data may be modified into final, output plaintext data using a similar prime number operation as applied during encryption.

Abstract: Partially homomorphic encryption systems may be transformed into fully homomorphic encryption systems that are scalable, rapid in translation speed, difficult to invert or break, capable of enabling various types of public and/or private key generation protocols and semantically secure. Input plaintext data are transformed into modified plaintext data using a prime number operation and the modified plaintext data is then encrypted using any number of conventional encryption schemes. Desired computations on the encrypted data are transformed into homomorphic operations, based on the nature of the encryption format, and the homomorphic operations are applied to yield manipulated encrypted data. The manipulated encrypted data may be decrypted and the decrypted plaintext data may be modified into final, output plaintext data using a similar prime number operation as applied during encryption.

Abstract: The present specification describes an advanced image processing system which allows the recognition and modification of specific sections of an image. Operationally, at least a portion of an input image is identified based on user instructions. Pixels corresponding to the identified portion of the input image are compared with pixels corresponding to other parts of image to detect the entire section corresponding to the portion, and a new image is created that includes the detected section. The system may operate within the context of a social networking application in which users can modify pictures using sections from other images, share them with other users in the social network, and access and modify images using a virtual keyboard which can be customized for a user.

Abstract: A cost-efficient digital CATV network to improve signal quality, provide reliability, and offer the ability to meet demands for interactive services is described. Analog or digital video downstream channels are converted to a digital format by a digital headend transmitter. Relatively costly error-encoding for digital video channels is also part of the digital headend transmitter. Downstream analog and digital video channels in the digital format are transmitted using time-division multiplex technology from a headend to nodes using standard network protocols, such as SONET. Standard network protocols provide error-monitoring and status indication of transmit data, thus ensuring high signal quality and reliability. Time-division multiplexing facilitates easy adding or dropping of information to a transmit path. Flexibility to add or drop information is critical in providing interactive services. Data from interactive services can be added or dropped at points of presence throughout the digital CATV network.

Abstract: The present specification discloses a processing architecture that has multiple levels of parallelism and is highly configurable, yet optimized for media processing. At the highest level, the architecture is structured to enable each processor, which is dedicated to a specific media processing function, to operate substantially in parallel. In addition to processor-level parallelism, each processing unit can operate on multiple words in parallel, rather than just a single word per clock cycle. Moreover, at the instruction level, the control data memory, data memory, and function specific dath paths can be controlled all within the same clock cycle.

Abstract: The present invention is a system on chip architecture having scalable, distributed processing and memory capabilities through a plurality of processing layers. In a preferred embodiment, a distributed processing layer processor comprises a plurality of processing layers, a processing layer controller, and a central direct memory access controller. The processing layer controller manages the scheduling of tasks and distribution of processing tasks to each processing layer. Within each processing layer, a plurality of pipelined processing units (PUs), specially designed for conducting a defined set of processing tasks, are in communication with a plurality of program memories and data memories. One application of the present invention is in a media gateway that is designed to enable the communication of media across circuit switched and packet switched networks.

Abstract: The present invention provides for an improved video compression and encoding that optimizes and enhances the overall speed and efficiency of processing video data. In one embodiment, the video codec transmits the output of an entropy decoder to a lossless compressor and memory before going through inverse discrete cosine transformation and motion compensation blocks.

Abstract: The present invention relates to a media transmission and reception system that is implemented, in the form of programs stored in a satellite device having a memory, an input mechanism for receiving commands from a user, and a transceiver capable of wirelessly accessing a network, and in a computing device having a memory and a transceiver capable of accessing a network. The program stored in the memory of the satellite device causes user commands to be processed, causes the satellite device to connect to the computing device through the network, and causes the satellite device to transmit command instructions, derived from the commands, to the computing device through the network. The program stored in the memory of the computing device causes the computing device to access media stored in a memory, causes the computing device to process the media, captures the processed media, compresses the media, and causes the computing device to transmit the compressed media to the satellite device.

Abstract: The present invention is directed toward a system on chip architecture having scalable, distributed processing and memory capabilities through a plurality of processing layers. One application of the present invention is in a novel media processing device, designed to enable the processing and communication of video and graphics using a single integrated processing chip for all visual media.

Abstract: A cost-efficient digital CATV network to improve signal quality, provide reliability, and offer the ability to meet demands for interactive services is described. Analog or digital video downstream channels are converted to a digital format by a digital headend transmitter. Relatively costly error-encoding for digital video channels is also part of the digital headend transmitter. Downstream analog and digital video channels in the digital format are transmitted using time-division multiplex technology from a headend to nodes using standard network protocols, such as SONET. Standard network protocols provide error-monitoring and status indication of transmit data, thus ensuring high signal quality and reliability. Time-division multiplexing facilitates easy adding or dropping of information to a transmit path. Flexibility to add or drop information is critical in providing interactive services. Data from interactive services can be added or dropped at points of presence throughout the digital CATV network.

Abstract: A cost-efficient digital CATV network to improve signal quality, provide reliability, and offer the ability to meet demands for interactive services is described. Analog or digital video downstream channels are converted to a digital format by a digital headend transmitter. Relatively costly error-encoding for digital video channels is also part of the digital headend transmitter. Downstream analog and digital video channels in the digital format are transmitted using time-division multiplex technology from a headend to nodes using standard network protocols, such as SONET. Standard network protocols provide error-monitoring and status indication of transmit data, thus ensuring high signal quality and reliability. Time-division multiplexing facilitates easy adding or dropping of information to a transmit path. Flexibility to add or drop information is critical in providing interactive services. Data from interactive services can be added or dropped at points of presence throughout the digital CATV network.

Abstract: The present application discloses an instruction format for storing multiple microprocessor instructions as one combined instruction. The instruction format includes a combination opcode field for storing a combination opcode that identifies a combination of the multiple instructions. The application also discloses an instruction format that uses prefix fields to specify the destination functional block for each combined instruction stored in an execute packet. A compiler program or an assembler program obtains from a table a combination opcode that corresponds to a combination of the multiple instructions. The table stores combination opcodes and their corresponding combinations of instructions. The compiler program or assembler program then assigns the found combination opcode to an opcode field of the combined instruction. In a trivial scenario, a single instruction can also be stored as a combined instruction.

Abstract: A communication system adjusts data rate to compensate for frequency variations in conversion clocks. The communication system includes a conversion clock at a transmitter and a conversion clock at a receiver that advance respective counters. A difference between the counters controls a resampling of digital data sent from the transmitter to the receiver. The conversion clocks run independently of each other. The difference between the counters incremented by respective conversion clocks provides an indication of the difference in frequencies between the conversion clocks. The difference is used to determine the ratio at which digitized information is resampled at the receiver before being converted to the analog domain.