Matches 1 - 38 out of 38
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EP0803999B1 Demodulator device for data carried by subcarriers  
6859509 Wide bandwidth phase-locked loop circuit  
A PLL circuit uses a multiple frequency range PLL in order to phase lock input signals having a wide range of frequencies. The PLL includes a VCO capable of operating in multiple different...
6734812 Wireless communication encoding and decoding techniques using variable length codes  
A wireless communication encoding and decoding technique using variable length codes is disclosed. The coding technique defines the transmission time for a high bit in a continuous bit stream as...
EP0651523B1 Communication receiver using soft decision to discriminate between a traffic channel frame and a fast associated control channel frame  
Abstract of EP0651523 In a digital cellular communication system, a cell-site station transmits a frame containing a fixed number of burst signals each having stealing flag bits indicating that...
6246729 Method and apparatus for decoding a phase encoded data signal  
A method and apparatus for decoding a phase encoded data signal utilizes windowed data which is transformed into real and imaginary frequency components thereof. The real and imaginary frequency...
6148038 Circuit for detecting and decoding phase encoded digital serial data  
A decoder circuit for decoding phase-encoded digital data signals includes a timing circuit and a signal viewer circuit coupled to logic circuitry. The timing circuit uses an edge of a received...
6128112 Weighted-sum processing method and apparatus for decoding digital signals  
The method and associated apparatus of the present invention decodes digital signals by appropriately weighting the respective noise portions of the two phase segments generated by the detector,...
RE36803 Bit clock reproducing circuit  
A bit clock reproducing circuit produces an output bit clock signal in response to an input clock signal but without reproducing jitter present in the input signal. A counter is supplied with a...
5778031 Decoding circuit for bi-phase BPSK signal having a high noise immunity  
A bi-phase signal is output from BPSK demodulator; by a pair determining circuit and a clock reproducing circuit, a clock signal corresponding to a former half bit of two half bits constituting a...
5694231 Weighted-sum processing method and apparatus for decoding optical signals  
The method and associated apparatus of the present invention decodes optical signals by appropriately weighting the respective noise portions of the two phase segments generated by the...
EP0803999A2 Demodulator device for data carried by subcarriers  
An RDS signal is binarized by a comparator (2) and the output is sampled by a regeneration clock in synchronism with a regeneration carrier to provide sampled data. Then, by means of an accumulator...
EP0712223A2 Method of transmitting digital data  
The method provides transmission of digital data over a common transmission channel with a secret block coded main channel and at least one auxiliary channel. The data of the auxiliary channel(s)...
EP0695065A2 Decoding circuit for bi-phase BPSK signal  
A bi-phase signal is output from BPSK demodulator (1); by a pair determining circuit (3a) and a clock reproducing circuit (2), a clock signal corresponding to a former half bit of two half bits...
5475705 Demodulator for Manchester-coded FM signals  
Binary signals that are transmitted by Manchester coding and frequency modulation are demodulated based on the behavior of the phase or complex vector value of the received signal. The polarities...
EP0651523A2 Communication receiver using soft decision to discriminate between a traffic channel frame and a fast associated control channel frame.  
In a digital cellular communication system, a cell-site station transmits a frame containing a fixed number of burst signals each having stealing flag bits indicating that the frame is a traffic...
5349588 Error detecting method and apparatus for data communications  
A unique method and apparatus processes and validates Manchester-coded data transmitted on a communications channel and containing a synchronization word and a data word including a plurality of...
EP0257183B1 Method for recovering digital signals after demodulation  
Abstract of EP0257183 A demodulation method is proposed, which demodulates digital signals present in the form of a multilayer analog baseband signal. The baseband signal (UB) is first digitised....
5127023 Retiming decoder/encoder  
An apparatus is disclosed for retiming and decoding Manchester-encoded data o produce a locally-formatted waveform, and for encoding a locally-formatted waveform in a Manchester-encoded format. The...
5023891 Method and circuit for decoding a Manchester code signal  
A circuit for decoding a high speed Manchester encoded digital communication signal is provided. The circuit includes a pair of latch circuits which are used to detect clock edges in the encoded...
4996529 Auto-zeroing circuit for offset cancellation  
An improved auto-zeroing feedback control circuit (FIG. 1) is disclosed to compensate for DC offset voltages in signal coding applications. The feedback control circuit for a signal limiter (120)...
4984253 Apparatus and method for processing simultaneous radio frequency signals  
In a signal processing system, a weighting function is applied to incoming signal pulses in response to a signal edge detector. A weighting function is applied both to the detected large signal...
4800576 Convolution data recovery circuit  
In a receiver of the type that receives an incoming phase shift keying (PSK) signal and recovers data therefrom, a data recovery circuit which utilizes convolution techniques. The data recovery...
4730024 Lubricant for thermoplastic resins and thermoplastic resin composition comprising said lubricant  
Disclosed is a lubricant for thermoplastic resins, which is prepared by (A) polymerizing 60-100 wt. % of an aromatic vinyl monomer and 0-40 wt. % of other vinyl monomer copolymerizable therewith to...
EP0257183A2 Method for recovering digital signals after demodulation.  
A demodulation method is proposed, which demodulates digital signals present in the form of a multilayer analog baseband signal. The baseband signal (UB) is first digitised. A specific number of...
4667333 Automatic clock recovery circuit  
An automatic clock recovery circuit is described. The automatic clock recovery circuit samples a received data signal with a recovered clock signal and advances or retards the recovered clock...
4636859 Didon digital demodulator  
A DIDON Digital demodulator includes an input analog-to-digital conversion device which supplies n samples (n being at least equal to 4) during a DIDON period, and an identification device which...
4606050 System for detecting and recovering a transmitted signal  
What is disclosed is a system for recovering encoded data from a transmitted signal. A clock regenerating circuit regenerates a clock signal from the data bits encoded in the signal. The...
4603322 High-speed sequential serial Manchester decoder  
An incoming serial Manchester signal is synchronously sampled by a first flip-flop with respect to a reference clock signal of a frequency f o . A second flip-flop divides the reference clock...
4584695 Digital PLL decoder  
A digital PLL technique to provide an effective sampling interval and resolution shorter than the driver clock period. A multi-phase driver clock provides a clock signals phase-offset from each...
4577335 Coherent data communications technique  
A technique for communicating digital data through a noisy medium using phase modulated carrier signals. A multiphase clock drives parallel channels to sample the received signal, avoiding the need...
4575684 Differential phase shift keying receiver  
A receiver for demodulating differential phase shift keying data, the data having bit values dependent upon whether the phase of a carrier is inverted or not inverted during a bit interval, the...
4567604 Biphase signal receiver  
A receiver for a biphase-L signal A is described which includes a line-up detector 14 generating a circuit initialization pulse. A preamble detector 40 is responsive to a preamble of the incoming...
EP0159924A1 Digital "DIDON" demodula  
4549311 Method and apparatus for measuring the strength of a radio signal frequency  
An improved method and apparatus for measuring the strength of a radio frequency (RF) signal subject to Rayleigh fading is described. The strength of the RF signal is sampled two or more times...
4485486 Method and apparatus for assigning duplex radio channels and scanning duplex radio channels assigned to mobile and portable radio telephones in a cellular radiotelephone communications system  
A unique method and apparatus for efficiently assigning duplex radio channels and scanning duplex radio channels assigned to mobile and portable radiotelephones in a cellular communications system...
4468752 Data synchronization apparatus  
Data synchronization apparatus for a 1500 baud computer-audio frequency magnetic tape recorder interface is disclosed. The synchronization apparatus automatically detects bit cell boundaries and...
4443883 Data synchronization apparatus  
Data synchronization apparatus for a 1500 baud computer-audio frequency magnetic tape recorder interface is disclosed. The synchronization apparatus automatically detects bit cell boundaries and...
4423520 Quantization circuit for image data transmission system  
A signal receiver quantization circuit for an image data transmission device in which received signals are quantized correctly even if they are subjected to distortion in their time positions so...
Matches 1 - 38 out of 38