摘要:
Described herein is a technology for facilitating watermarking of digital goods. The technology, described herein, performs watermark embedding and the detection of embedded watermarks based upon rational statistics of multiple regions of a digital good
摘要:
A system and method for securing wireless communications are provided. A method for secure communications by a first user includes estimating a channel between the first user and a second user based on a pilot signal transmitted by the second user, determining a first threshold and a second threshold based on the estimate of channel, selecting a first subset of channel estimates, signaling the first subset of channel estimates to the second user, receiving a second subset of channel estimates from the second user, for each channel estimate in the second subset of channel estimates, quantizing the channel estimate based on a relationship between a gain of the channel estimate and the first threshold and the second threshold, generating a first secret key based on quantized channel estimates, verifying that the first secret key matches a second secret key generated by the second user, and transmitting information to the second user.
摘要:
A system and method for securing wireless transmissions is provided. A method for transmitting secure messages includes selecting a bin of codewords from a plurality of bins. The bin of codewords containing a plurality of sub-bins of codewords, and the selecting is based on a first message. The method also includes selecting a sub-bin of codewords from the plurality of sub-bins of codewords based on a second message, selecting a codeword from the sub-bin of codewords, and transmitting the selected codeword to a legitimate receiver.
摘要:
A system and method for securing wireless transmissions is provided. A method for transmitting secure messages includes selecting a bin of codewords from a plurality of bins. The bin of codewords containing a plurality of sub-bins of codewords, and the selecting is based on a first message. The method also includes selecting a sub-bin of codewords from the plurality of sub-bins of codewords based on a second message, selecting a codeword from the sub-bin of codewords, and transmitting the selected codeword to a legitimate receiver.
摘要:
A system and method for securing wireless communications are provided. A method for secure communications by a first user includes estimating a channel between the first user and a second user, thereby producing an first phase estimate of the channel, generating a first block of secret bits based on the first phase estimate of the channel, and transmitting public information regarding the first block of secret bits to the second user. The second user makes use of the public information to generate a second block of secret bits.
摘要:
Irregular food manufacturing detection by using conversion pattern in one aspect generates one or more rules associated with amount of resources used to manufacture a food product, collects data associated with a selected manufacturing process of the food product at a selected manufacturer and determines whether the collected data complies with the generated one or more rules. Irregularity may be identified if the collected data does not comply with the generated one or more rules.
摘要:
Identifying one or more source units for one or more food items may include assigning a sequence of numbers to a plurality of source units received at a processing entity and assigning a sequence of numbers to a plurality of end product units processed from the plurality of source units at the processing entity. A production rate associated with the end product units may be determined from a bill of materials associated with the end product units. A probability distribution function may be generated using at least the production rate. The probability distribution function maps a range of the sequence numbers associated with the plurality of source units to a range of sequence numbers associated with the end product units. A conversion algorithm may be generated that uses the probability distribution function to determine a source unit associated with a selected end product unit.
摘要:
A method of providing help information for an application program includes capturing, with a computing device, an operation performed for completing a task; recording the operation in correspondence to the task; and indicating the operation in an application program interface for a user to perform the same operation in response to the user's designation of the task.
摘要:
A system and method for securing wireless communications are provided. A method for transmitting a message by a transmitter includes partitioning the message into N sub-messages, where N is a positive integer value greater than or equal to two, encoding the N sub-messages into a plurality of packet groups with a first security code, encoding the plurality of packet groups into a plurality of output packets with a second security code, and transmitting the plurality of output packets.
摘要:
A receiving circuit comprises an A/D converter which converts a receive signal to a digital signal having a first data format at a sampling rate corresponding to twice the spreading bandwidth of the receive signal, an analog front-end interface which converts the first data format of the digital signal to a second data format, a searcher which detects a phase of the digital signal having the second data format to perform a synchronization capture and outputs a timing signal, an interpolation filter which samples the digital signal having the second data format at a sampling rate different from the sampling rate of the A/D converter, a rake receiver which detects the synchronism of a signal outputted from the interpolation filter based on the timing signal and a demodulator which demodulates a signal outputted from the rake receiver.