Abstract: Methods and apparatus to determine nearfield localization using phase and received signal strength indication (RSSI) diversity are disclosed. An example method includes determining a first strength of an electric field and a second strength of a magnetic field, the electric field and the magnetic field associated with an electromagnetic signal sent from a transmitter; determining a difference between the first strength and the second strength; and determining a transmitter distance based on the difference between the first strength and the second strength.

Abstract: A digital quadrature architecture is presented that employs switched current digital power amplifiers and uses a digital class-B input code profile in combination with non-overlapping LO signals to overcome the low efficiency problems of conventional quadrature architectures. By employing digital class-B signals, the number of I/Q cells is reduced to half and the need for extra processing of the sign bits is eliminated in the transmitters, thereby improving the efficiency.

Abstract: An embodiment of the invention includes a packet processing pipeline. The packet processing pipeline includes match and action stages. Each match and action stage in incurs a match delay when match processing occurs and each match and action stage incurs an action delay when action processing occurs. A transport delay occurs between successive match and action stages when data is transferred from a first match and action stage to a second match and action stage.

Abstract: Subject matter disclosed herein may relate to arithmetic units of processors, and may relate more particularly to configurable arithmetic units. Configurable arithmetic units may comprise a plurality of basic units, and may further comprise a programmable fabric to selectively connect the plurality of basic units at least in part to process one or more sets of parameters in accordance with one or more specified arithmetic operations.

Abstract: Methods and apparatus to determine nearfield localization using phase and received signal strength indication (RSSI) diversity are disclosed. An example method includes determining a first strength of an electric field and a second strength of a magnetic field, the electric field and the magnetic field associated with an electromagnetic signal sent from a transmitter; determining a difference between the first strength and the second strength; and determining a transmitter distance based on the difference between the first strength and the second strength.

Abstract: An embodiment of the invention includes a packet processing pipeline. The packet processing pipeline includes match and action stages. Each match and action stage in incurs a match delay when match processing occurs and each match and action stage incurs an action delay when action processing occurs. A transport delay occurs between successive match and action stages when data is transferred from a first match and action stage to a second match and action stage.

Abstract: An embodiment of the invention includes receiving packet header vectors where a header vector includes a number of packet header words. Match operations are performed on the packet header words. At least one packet header word is modified based on the match operations. At least one processor is used for each packet header word to perform the packet match operations and modify at least one packet header word. Instructions are received from an instruction word where a VLIW instruction word includes all of the instruction words. Each processor performs an operation in response to the instruction word.

Abstract: A wireless communication device is presented for use with a sensor. The wireless communication device includes: an antenna, a driver circuit and a bias circuit. The driver circuit is electrically coupled to the antenna and includes at least one pair of cross-coupled transistors. The bias circuit is electrically coupled to the driver circuit. In a transmit mode, the bias circuit biases the driver circuit with a first bias current. In response to the first bias current, the driver circuit oscillates the antenna. In a receive mode, the bias circuit biases the driver circuit with a second bias current, such that the first bias current differs from the second bias current. In response to the second bias current, the bias circuit amplifies a signal received by the antenna.

Abstract: An embodiment of the invention includes receiving packet header vectors where a header vector includes a number of packet header words. Match operations are performed on the packet header words. At least one packet header word is modified based on the match operations. At least one processor is used for each packet header word to perform the packet match operations and modify at least one packet header word. Instructions are received from an instruction word where a VLIW instruction word includes all of the instruction words. Each processor performs an operation in response to the instruction word.

Abstract: A packet processing block. The block has an input for receiving data in a packet header vector, the vector comprising data representing information for a packet and a match unit for performing match operations between packet header vector data and at least one match table. Various embodiments provide advantages in connection with storing certain action or next table bits outside of the match table, or constants in the table, or by forming the match table from multiple unit match table memories.

Abstract: Optical flow is measured between a first image and a second image by evaluating a match quantifying parameter in respect of a set of candidate flow vectors. The set of candidate flow vectors includes one or more flow vectors selected in dependence upon one or more neighbor flow vectors associated with one or more neighboring pixels to the given pixel which have previously calculated respective match quantifying parameters indicative of closest matches for the one or more neighboring pixels. The set of candidate flow vectors also includes adjacent flow vectors corresponding to target pixels surrounding the target pixels identified by the neighbor flow vectors. One or more randomly selected random flow vectors is also added to the set of candidate flow vectors.

Abstract: A packet processing block. The block has an input for receiving data in a packet header vector, the vector comprising data representing information for a packet and a match unit for performing match operations between packet header vector data and at least one match table. Various embodiments provide advantages in connection with storing certain action or next table bits outside of the match table, or constants in the table, or by forming the match table from multiple unit match table memories.

Abstract: A packet processing block. The block has an input for receiving data in a packet header vector, the vector comprising data representing information for a packet and a match unit for performing match operations between packet header vector data and at least one match table. Various embodiments provide advantages in connection with storing certain action or next table bits outside of the match table, or constants in the table, or by forming the match table from multiple unit match table memories.

Abstract: Methods and apparatus to determine nearfield localization using phase and received signal strength indication (RSSI) diversity are disclosed. An example method includes determining a first strength of an electric field and a second strength of a magnetic field, the electric field and the magnetic field associated with an electromagnetic signal sent from a transmitter; determining a difference between the first strength and the second strength; and determining a transmitter distance based on the difference between the first strength and the second strength.

Abstract: A packet processing block. The block comprises an input for receiving data in a packet header vector, the vector comprising data values representing information for a packet. The block also comprises circuitry for performing packet match operations in response to at least a portion of the packet header vector and data stored in a match table, and circuitry for performing one or more actions in response to a match detected by the circuitry for performing packet match operations and according to information stored in an action table. Each of said match table and said action table comprise one or more memories selected from a pool of unit memories, wherein each memory in the pool of unit memories is configurable to operate as either a match memory or an action memory.

Abstract: Methods and apparatus to determine nearfield localization using phase and received signal strength indication (RSSI) diversity are disclosed. An example method includes determining a first strength of an electric field and a second strength of a magnetic field, the electric field and the magnetic field associated with an electromagnetic signal sent from a transmitter; determining a difference between the first strength and the second strength; and determining a transmitter distance based on the difference between the first strength and the second strength.

Abstract: A packet processing block. The block comprises an input for receiving data in a packet header vector, the vector comprising data values representing information for a packet. The block also comprises circuitry for performing packet match operations in response to at least a portion of the packet header vector and data stored in a match table, and circuitry for performing one or more actions in response to a match detected by the circuitry for performing packet match operations and according to information stored in an action table. Each of said match table and said action table comprise one or more memories selected from a pool of unit memories, wherein each memory in the pool of unit memories is configurable to operate as either a match memory or an action memory.

Abstract: Hashing complexity is reduced by exploiting a hashing matrix structure that permits a corresponding hashing function to be implemented such that an output vector of bits is produced in response to an input vector of bits without combining every bit in the input vector with every bit in any row of the hashing matrix.

Abstract: Methods and apparatus to determine nearfield localization using phase and received signal strength indication (RSSI) diversity are disclosed. An example method includes determining a first strength of an electric field and a second strength of a magnetic field, the electric field and the magnetic field associated with an electromagnetic signal sent from a transmitter; determining a difference between the first strength and the second strength; and determining a transmitter distance based on the difference between the first strength and the second strength.

Abstract: An apparatus for preventing a relay attack that includes a microcontroller, a receiver, and a transmitter. The receiver is configured to receive a challenge message from a verifier. The challenge message has a challenge message frequency at a first challenge message frequency during a first time slot. The transmitter is configured to transmit a response message to the verifier. The response message has a response message frequency at a first response message frequency during the first time slot. The first response message frequency is different than the first challenge message frequency. The challenge message frequency is at a second challenge message frequency and the response message frequency is at a second response message frequency during a second time slit. The second challenge message frequency is different than the second response message frequency.