Abstract: A market process having a market methodology selected from a set of market methodologies is operative to interact with trading processes on a platform. The platform also supports platform processes for providing services to the market process and the trading processes. The trading processes interact with each other and with external markets through the market processes.

Abstract: A platform supports multiple processes, including market processes having respective market methodologies, trading processes having trading methodologies, platform processes providing services to the market processes and trading processes, and representation processes for coupling the market processes to external markets. The trading processes interact with each other and with external markets through the market processes.

Abstract: A system for auctioning financial products over a distributed, networked computer system includes a plurality of workstations for entering orders for financial products into the distributed, networked computer system. The orders specify a price for the financial product, a quantity of the financial product and exposure time which the order can remain active. The system also includes a plurality of workstations for entering predefined relative indication and responses to orders for the product. The predefined relative indications specify a willingness to trade. The responses specify a price and quantity.

Abstract: Apparatus for demodulating digital video broadcast signals with an improved automatic frequency control comprises data modulated on a multiplicity of spaced carrier frequencies, including: analog to digital conversion device for providing a series of digital samples of the broadcast signal, Fourier Transform for analysing the samples to provide a series of data signal values for each carrier frequency signal processing devices for processing the series of data signal values including the phase-error-correcting, and automatic frequency control device for controlling the frequency of the signals input to the Fourier Transform Processor, wherein the automatic frequency control device includes coarse frequency control unit for controlling the frequency in terms of increments of the carrier spacing frequency, and fine frequency control unit for controlling the frequency for values less than a single carrier spacing frequency interval, wherein the coarse frequency unit includes recursive of filtering for assessing

Abstract: A demodulator suitable for implementation in a single chip for demodulating digital video broadcast signals comprising data modulated on a multiplicity of spaced carrier frequencies, wherein an input broadcast signal is converted to a frequency sufficiently low to enable analog digital conversion of the signal, the demodulator comprising analog to digital conversion means (20) for converting the broadcast signal to a series of digital samples, real to complex conversion means (22) for converting each digital sample to a complex number value, Fourier transform means (24) for analyzing the complex number values to provide a series of signal values for each carrier frequency, frequency control means (9, 38), comprising means responsive to the output of said Fourier Transform means for producing a signal for controlling the frequency of the signal formed by said complex number values, and signal processing means for receiving the signal values and providing an output for decoding, the signal processing means incl

Abstract: Improved synchronization of OFDM signals is achieved. A controlled oscillator (8) provides clock pulses to derive complex samples of an input signal which are applied both to a fast Fourier transform (5) for data recovery and to a synchronization unit (9). The synchronization unit generates the complex product XY* of the input and the delayed input, which is applied to a high-pass filter (30) to suppress frequencies below the symbol frequency. The filter output is applied through a symbol comb filter (40) to an adaptive slicer (50) which determines the larger magnitude of the real and imaginary components of the signal. A pulse processor (60) generates a single pulse at the leading edge of the symbol pulse which is applied to a symbol counter (70). The symbol counter includes two count stages arranged to lock in quickly and yet be variable to accomodate different guard intervals in the OFDM signal.

Abstract: Trading processes are operative to route orders from order rooms to market processes, which process the orders according to respective market methodologies. The order routing strategy can be embodied in a decision table having rules with conditions and actions to be taken when the conditions are true. Accordingly, order rooms can readily configure and reconfigure trading processes.

Abstract: An ink jet printer includes a printer frame and a maintenance station coupled to the printer frame. The maintenance station includes a maintenance frame having a first side. The first side has formed therein at least a first guide slot and a first flexible end-stop member associated with the first guide slot. A maintenance sled is provided which is movable within the maintenance frame in a first direction. The maintenance sled has a first guide member positioned to slideably ride in the first guide slot. A travel limit of the first guide member in the first direction is defined by the first flexible end-stop member.

Abstract: An apparatus for demodulating a digital video broadcast signal comprising data modulated on a multiplicity of spaced carrier frequencies. A transform device may analyze the digital broadcast signal to provide a series of symbol values for each of the multiplicity of carrier frequencies. An automatic frequency control device may control the frequency of the series of symbol values in dependence on a common phase error signal from the series of symbol values. First and second common phase error correction (CPE) devices may receive common phase error signals, for correcting the signal values from the transform device. A channel equalization device may compensate for communication channel impairments for receiving directly the phase error corrected signals from the first CPE device.

Abstract: A demodulator suitable for implementation in a single chip for demodulating digital video broadcast signals including data modulated on a multiplicity of spaced carrier frequencies, wherein an input broadcast signal is converted to a frequency sufficiently low to enable analog to digital conversion of the signal, converter for converting the broadcast signal to a series of digital samples in complex format, transformer for analyzing the digital sample values to provide a series of data symbol values for each carrier frequency and signal processor including channel equalizer for receiving the signal values and providing an output for decoding, automatic frequency controller for controlling the frequencies of the digital sampling signals applied to the transformer, and timing synchronizer for synchronizing the transformer with the symbol periods of the broadcast signal, including correlator for receiving the digital signal values and including a delay having a time period equal to the active symbol period, and

Abstract: A demodulator suitable for implementation in a single chip for demodulating digital video broadcast signals including data modulated on a multiplicity of spaced carrier frequencies, wherein an input broadcast signal is converted to a frequency sufficiently low to enable analog digital conversion of the signal. The demodulator includes an analog to digital converter for converting the broadcast signal to a series of digital samples; a real to complex converter for converting each digital sample to a complex number value; Fourier transformer for analyzing the complex number values to provide a series of data symbol values for each carrier frequency; a signal processor for receiving the data symbol values and providing an output for decoding; and a timing synchronizer for synchronizing the Fourier transformer with the symbol periods of the broadcast signal.

Abstract: Apparatus for demodulating digital video broadcast signals with an improved mechanism for automatic frequency control including data modulated on a multiplicity of spaced carrier frequencies. The apparatus includes an analog to digital converter for providing a series of digital samples of the broadcast signal, a Fourier Transformer for analyzing the samples to provide a series of data signal values for each carrier frequency, signal processor for processing the series of data signal values including the phase-error-correcter, and automatic frequency controller for controlling the frequency of the signals input to the Fourier Transformer. The automatic frequency controller includes coarse frequency controller for controlling the frequency in terms of increments of the carrier spacing frequency, and fine frequency controller for controlling the frequency for values less than a single carrier spacing frequency interval.

Abstract: Each sheet of a stack of media is aligned with a fixed alignment surface prior to being fed towards a process station of a printer by a single pick roll. During the first portion of its cycle of operation, the sheet advancing force of the pick roll, which is offset from the axis or centerline of the sheet, exerts a torque on at least the uppermost sheet of the stack to have one of its sides engage the alignment surface if it is skewed. When the one side of the sheet is not engaging the alignment surface when the pick roll is initially energized, the uppermost sheet's leading edge engages a resilient projection of an insert of a rib, which is offset from the axis of the sheet but farther from the alignment surface than the pick roll. The skewed sheet pivots about the projection, which is formed of a high coefficient of friction material, extending beyond the surface of the rib. During the remainder of its energization, the pick roll advances the sheet towards the process station of the printer.

Abstract: A disposable replacement tip for caulking tubes includes a conical first end portion tapered acutely to a distal sharpened point. The exterior of the first end portion is provided with threads, and an intake port adjacent to the sharp point extends diametrically through the tubular member. Joined to the wide end of the first end portion is a generally cylindrical, tubular central portion. A second end portion extends from the central portion in opposition to the first end portion, both end portions being aligned along a common axis. The second end portion comprises another conical tubular member tapered acutely to an open end. A continuous flow space extends from the intake port, through the interiors of the first end portion, the central portion, and the second end portion to the open end thereof. The sharpened point of the first end portion may be driven into the end opening of a caulking tube, or through the sidewall of the tube, and the device is rotated manually.

Abstract: Digital words are transmitted together with associated parity or checking digits. The parity bits are each related to a group of bits of the same significance from several different words. At a receiving station, a parity bit is generated for the same group from the incoming words and compared with the corresponding received parity bit. When the generated and received parity bits differ, a value is estimated for each word containing a bit from the respective group, and the estimated and received values for the word are compared to detect any word containing an erroneous bit, which bit is then corrected.This invention relates to the transmission of digital signals.In digital television systems the video signal is commonly represented by a series of eight-digit binary numbers. If any of the bits are altered by errors, then the effect appears as a brightness error in the picture, the magnitude of which depends on the significance of the affected bit.