Abstract: A method for decoding a codeword in a data stream encoded according to a low density parity check (LDPC) code having an m×j parity check matrix H by initializing variable nodes with soft values based on symbols in the codeword, wherein a graph representation of H includes m check nodes and j variable nodes, and wherein a check node m provides a row value estimate to a variable node j and a variable node j provides a column value estimate to a check node m if H(m,j) contains a 1, computing row value estimates for each check node, wherein amplitudes of only a subset of column value estimates provided to the check node are computed, computing soft values for each variable node based on the computed row value estimates, determining whether the codeword is decoded based on the soft values, and terminating decoding when the codeword is decoded.

Abstract: A method and apparatus for providing an automatically upgradeable software application includes targeted advertising based upon demographics and user interaction with the computer. The software application includes a display region used for banner advertising that is downloaded over a network such as the Internet. The software application is accessible from a server via the network and demographic information on the user is acquired by the server and used for determining what advertising will be sent to the user. The software application further targets the advertisements in response to normal user interaction with the computer. Data associated with each advertisement is used by the software application in determining when a particular advertisement is to be displayed. This includes the specification of certain programs that the user may have so that, when the user runs the program (e.g., a spreadsheet program), a relevant advertisement will be displayed (e.g., an advertisement for a stock brokerage).

Abstract: In one inventive aspect, a method of reactive targeted advertising provides for display of advertising, via the internet, to computers of users. In a particular example, a plurality of keywords are stored in a memory. The method comprises determining whether one or more of those keywords are used in a web page, and for any keywords determined to be used, an advertisement is selected using those keywords. The advertisement is for display on the computer of the user who is accessing the web page. A request is received for the selected advertisement, and the advertisement is provided, from an advertising server and over the internet, for display on the computer of the user.

Abstract: A method and apparatus for providing an automatically upgradeable software application includes targeted advertising based upon demographics and user interaction with the computer. The software application is accessible from a server via the network and demographic information on the user is acquired by the server and used for determining what advertising will be sent to the user. The software application includes programming that accesses the sewer to determine if one or more components of the application need upgrading. If so, the components can be downloaded and installed without further action by the user. A distribution tool is provided for software distribution and upgrading over the network. Also provided is a user profile that is accessible to any computer on the network. Furthermore, multiple users of the same computer can possess Internet web resources and files that are personalized, maintained and organized.

Abstract: A high data width accelerator, comprising computer instructions for calculating at least a portion of a trace-back during a trellis computation, wherein the calculation allows faster trace-back

Abstract: A digital signal processor for decoding Trellis based channel encoding stages based on radix-4 stages comprising means for rearranging the input and output data in Radix-4 Viterbi decoding to make inter-stage Trellis data movement suitable for use in the digital signal processor.

Abstract: A syndrome evaluation with partitioning of a received block of symbols into subsets and interleaved partial syndrome evaluations to overcome multiplier latency. Parallel syndrome evaluations with a parallel multiplier.

Abstract: A method and apparatus for providing an automatically upgradeable software application includes targeted advertising based upon demographics and user interaction with the computer. The software application includes a display region used for banner advertising that is downloaded over a network such as the Internet. The software application is accessible from a server via the network and demographic information on the user is acquired by the server and used for determining what advertising will be sent to the user. The software application further targets the advertisements in response to normal user interaction with the computer. Data associated with each advertisement is used by the software application in determining when a particular advertisement is to be displayed. This includes the specification of certain programs that the user may have so that, when the user runs the program (e.g., a spreadsheet program), a relevant advertisement will be displayed (e.g., an advertisement for a stock brokerage).

Abstract: A method and apparatus for providing an automatically upgradeable software application includes targeted advertising based upon demographics and user interaction with the computer. The software application is accessible from a server via the network and demographic information on the user is acquired by the server and used for determining what advertising will be sent to the user. The software application includes programming that accesses the server to determine if one or more components of the application need upgrading. If so, the components can be downloaded and installed without further action by the user. A distribution tool is provided for software distribution and upgrading over the network. Also provided is a user profile that is accessible to any computer on the network. Furthermore, multiple users of the same computer can possess Internet web resources and files that are personalized, maintained and organized.

Abstract: A formation logging tool having a substantially continuous central mandrel with regularly spaced mass blocks disposed thereon, at least some of the mass blocks carrying sensors such as receivers. By adopting this structure, the tool can be made to behave as a mass-spring structure and its flexural and extensional behaviour controlled such that its dispersion curve does not extend into the dispersion curve of the formation to be logged. The structure can be applied to the whole of the logging tool or just to the receiver section and/or any spacer section between the receiver and the transmitter section.

Abstract: This invention uses vector predicate registers to control conditional execution of instructions for vector elements within a data word. A particular vector predicate registers is addressed via a register index. The state of bits of the vector predicate register controls whether a corresponding sub-word operation is executed or inhibited.

Abstract: This invention makes each register bypass forwarding register explicitly addressable in software. Software chooses whether to access the forwarding register immediately eliminating the need for complex automatic detection. Each instruction executes and always writes its result into the forwarding register. Writing this data into the register file in the next cycle is optional as selected by the destination register file number. This invention separates registers storing predication data from the register file. This separation removes the speed problem by enabling scheduling of the predication computation out of the critical path.

Abstract: This invention is a method of using a Fibonacci form linear feedback shift register. The Fibonacci form linear feedback shift register having an initial state and a set of taps is converter into an equivalent Galois form linear feedback shift register. The Galois form linear feedback shift register state is altered employing Galois field arithmetic. The altered Galois form linear feedback shift register is converted into an equivalent altered Fibonacci form linear feedback shift register. A pseudo-random number produced by the altered Fibonacci form linear feedback shift register is used, for example in a scramble code.

Abstract: A transmission including a first input member which in use is rotatably driven by a first prime mover, a second input member which in use is rotatably driven by a second prime mover, a rotatable output member from which drive is provided to a driven structure, the first input member driving a driven member and there being a drivable member drivable by the second input member, the driven member and the drivable member being coupled though an intermediate structure which carries the output member, drive being transmitted from the first input member to the output member when torque is input to the second input member from the second prime mover, and wherein the second prime mover is an electrically driven switched reluctance motor.

Abstract: A functional unit in a digital system is provided with a rounding Multiplication instruction, wherein a most significant product of first pair of elements is combined with a least significant product of a second pair of elements, the combined product is rounded, and the final result is stored in a destination. Rounding is performed by adding a rounding value to form an intermediate result, and then shifting the intermediate result right. A combined result is rounded to a fixed length shorter than the combined product.

Abstract: A transfer request bus and transfer request bus node is described which is suitable for use in a data transfer controller processing multiple concurrent transfer requests despite the attendant collisions which result when conflicting transfer requests occur. Transfer requests are passed from an upstream transfer request node to downstream transfer request node and then to a transfer request controller with queue. At each node a local transfer request can also be inserted to be passed on to the transfer controller queue. Collisions at each transfer request node are resolved using a token passing scheme wherein a transfer request node possessing the token allows a local request to be inserted in preference to the upstream request.

Abstract: A data processing system is provided with a digital signal processor that has a set of instructions for intermingling byte fields selected from a selected pair of source operands and storing the ordered result in a selected destination register. A first 32-bit operand is treated as four 8-bit fields while a second 32-bit operand is treated as four 8-bit fields. Intermingling circuitry is operable to form an ordered result in accordance with each one of the set of byte intermingling instructions. An instruction is provided that performs a shift right and byte merge operation. Another instruction is provided that performs a shift left and byte merge operation. Another instruction is provided that perform a byte swap operation. A set of instructions are provided that perform various byte packing and unpacking operations.

Abstract: An agricultural spreader (200) includes one or more hydraulically actuated spreading means in a hydraulic circuit including a hydraulic pump. The hydraulic pump is driven by at least one drive wheel (6) mounted on drive wheel mounting means (7) and engageable with at least one ground wheel (9) of the spreader. The hydraulic pump is adapted to supply hydraulic fluid at a substantially constant required flowrate to the one or more hydraulically actuated spreading means (2) when a rotational speed of the ground wheel (9) is greater than or equal to a minimum required rotational speed.

Abstract: A data processing system is provided with a digital signal processor which has an instruction for conditionally branching based on the contents of a specified test register. Each time a branch is taken, the register is decremented as a side effect of executing the branch instruction. In addition, a predicate register is specified by the instruction. A branch occurs only if both registers meet specified conditions.

Abstract: A method and apparatus for providing an automatically upgradeable software application includes targeted advertising based upon demographics and user interaction with the computer. The software application includes a display region used for banner advertising that is downloaded over a network such as the Internet. The software application is accessible from a server via the network and demographic information on the user is acquired by the server and used for determining what advertising will be sent to the user. The software application further targets the advertisements in response to normal user interaction with the computer. Data associated with each advertisement is used by the software application in determining when a particular advertisement is to be displayed. This includes the specification of certain programs that the user may have so that, when the user runs the program (e.g., a spreadsheet program), a relevant advertisement will be displayed (e.g., an advertisement for a stock brokerage).