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Patent Searching and Data


Matches 401 - 450 out of 5,342

Document Document Title
WO/1993/017417A1
A recording medium on which information data is optically recorded. In the recording region of the optical recording medium, the space between the n-th recording track and the preceding (n-1)-th recording track is smaller than the diamet...  
WO/1993/015558A2
This invention relates to devices to compact data, and to transmit, store, compute with and cross-reference this compacted data. It is particularly concerned with a system of computing devices which accepts any quantity of information fr...  
WO/1993/012599A1
In this embedded signalling system a sequence of code symbols representing digital information is generated (100). A code signal representing this sequence is generated (200), which is dynamically filtered to form a modified code signal ...  
WO/1993/009493A1
A method to encode two digital signals (USC-B, UBC-B) is disclosed. Each of the digital signals is characterized by a bit stream. An N bit block from the first signal is mapped to a unique M bit third signal where M is greater than N. Fu...  
WO/1993/009604A1
A run length limited encoding/decoding system (200) of this invention includes a clock swap logic circuit (301), a read reference clock multiplexer circuit (304), a write clock skip logic circuit (310), an encoder start logic circuit (34...  
WO/1993/001591A1
A method and apparatus for error detection and correction in the storage and retrieval of digital data on magnetic storage systems includes forming and storing a set of reference waveforms (... Wn-1, Wn, Wn+1, ...) having assigned refere...  
WO/1992/022060A1
An electronic method and apparatus for signal encoding and decoding to provide ultra low distortion reproduction of analog signals, while remaining compatible with industry standardized signal playback apparatus not incorporating the dec...  
WO/1992/021083A1
An information processing system comprising at least one information processing unit (A, B). The information processing unit has at least one information processing member which resolves allowed values. Allowed values include at least on...  
WO/1992/015094A1
For reproducing magnetically recorded binary signals, a signal composed of pulses that are alternatively positive and negative with respect to a center line is scanned from the tape. In order to recover the binary signal, level discrimin...  
WO/1992/002988A1
A method and an electronic communication link for piece of information serial transmission includes at multiple conductor constellation having at least three conductors (R, S, T). There could be provided at least three different combinat...  
WO/1992/002081A1
In a method for limiting the bandwidth of a selected binary signal (B), there is produced a modulated digital signal (D) which presents a continuous series of changes in signal level. The two occurent logic states (1, 0) are each represe...  
WO/1991/020138A1
A fiber optic extender system (Fig. 6) is disclosed in which messages are transferred by fiber optic lines between remotely located electronic units. The electronic units (e.g., transformer-isolated) have three signal levels: positive vo...  
WO1991013436A3  
WO/1991/016710A1
The aim is to prevent the propagation of errors from one data word to the next and to safeguard the polarity received by the signal. In the signal there are time sections in which characteristic signals are transmitted which make it poss...  
WO/1991/013436A2
In a process for evaluating binary data stored on the magnetic track of a magnetic storage card (10) in the form of flux changes in accordance with the two-frequency code, a relative movement (v) is produced between the magnetic storage ...  
WO/1991/007011A1
The coding scheme involves transmitting a series of pulses, the separations between successive pulses representing the same data. Even though the separations between successive pulses all represent the same data, the separations are all ...  
WO/1991/005416A1
A collision detection method and apparatus (10) is disclosed for detecting code rule violations in Manchester encoded data packets. The signals delta0 = S2n - S2n-1, $(d)1 = S2n+1 - S2n, delta2 = S2n + 1 - S2n-1, sigma0 = S2n + S2n-1 are...  
WO/1991/003813A1
An improved decoder circuit suitable for decoding an encoded binary data stream. The encoding is expected to generate a three-part code format, the format, in turn, comprising a pair of clock transitions that set-off a data transition. T...  
WO/1991/003879A1
The aim of the invention is to obtain, using digital circuit means, from a binary signal a control quantity (G) which indicates whether the binary signal contains a wanted signal or merely an interference signal. In a first stage (24), t...  
WO/1991/001597A1
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 signal for providing respectively set and ...  
WO/1990/015494A1
In a process for analog transmission or storage of digital data, the digital data are imposed on a total train of oscillations produced by the cumulative superposition of several narrow-band partial trains of oscillations. The digital da...  
WO/1990/013122A1
Electrical circuits suitable for decoding binary information, in accordance with either of two novel modulation methods. The novel modulation methods are referenced in the instant case, and it is explained that the methods may be used wh...  
WO/1990/011650A1
Electrical circuits suitable for encoding binary information, in accordance with a novel modulation method. The novel modulation method is referenced in the instant case, and it is explained that the method may be used when the encoding ...  
WO/1990/011651A1
A method for modulating binary data into a format suitable for encoding and decoding information, that employs a non-return-to-zero (NRZ) technique. The method can be employed for a first situation where the information transfer rate dur...  
WO/1990/011649A1
Electrical circuits suitable for decoding binary information, in accordance with a novel modulation method. The novel modulation method is referenced in the instant case, and it is explained that the method may be used when an encoding o...  
WO/1990/009022A1
A transform encoder/decoder system employs a discrete transform, carefully designed analysis/synthesis window pairs, adaptive transform coefficient quantization, and adaptive bit allocation to encode high-quality music including broadcas...  
WO/1990/007242A1
Apparatus (10) and method for encoding data in an AC coupled bi-polar data transmission system. A stream of binary data is encoded to produce first and second binary code signals for transmission on a pair of transmission lines (T0, T1)....  
WO/1990/004290A1
A self-clocking three-part encoded data stream is recorded on a magnetic media during a velocity varying period of time. The recording device encodes clock and data pulses. The polarity of the clock and data pulses are required to be kno...  
WO/1989/012891A1
Novel electrical circuits suitable for decoding an encoded binary data stream. The electrical circuits include digital circuitry, and are preferably employed to decode magnetic information or optical information. The information has been...  
WO/1989/012892A1
A method for modulating a binary data stream into a code format suitable for encoding and decoding information that employs a non-return-to-zero (NRZ) technique. The method can be employed for the situation where the information transfer...  
WO/1989/012894A1
Novel electrical circuits suitable for decoding an encoded binary data stream. The electrical circuits include analog circuitry, and are preferably employed to decode magnetic information or optical information. The information has been ...  
WO/1989/012893A1
Electrical circuits suitable for encoding a binary data stream into a three-part code format. The circuits are particularly valuable for situations where the encoding or information transfer rate is dependent on unpredictable and variabl...  
WO/1989/005079A1
A synchronous counter operating from a fixed frequency time base senses the data rate of an incoming bit stream and provides a time base synchronized with the incoming data. Detection of the data rate is accomplished in real time without...  
WO1989001721A3  
WO/1989/001721A2
A synchronous decoder for recovering a train of binary data encoded in a biphase format and decoding into NRZ format. Encoded data is sampled during the first half of a bit period and the second half of a bit period and stored respective...  
WO/1988/006819A1
An encoding and decoding system for electronic data communication system, wherein each character to be transmitted is encoded as a unique multi-bit binary value. The total number of bits as well as the number of logic one bits in all uni...  
WO/1988/006384A1
A system for serial communication comprising an encoder (220) for serially outputting conservative encoded codewords responsive to a parallel data input, and a decoder (220) for outputting, in parallel, decoded data words responsive to t...  
WO/1988/002585A1
In a data transmission system using a predetermined trellis code, the output signal points (on leads 25a-d) are selected from a predetermined alphabet representing (k+n)-bit input words by using the values of n bits (on leads 13a-b) of e...  
WO/1986/005343A1
A line transmission system comprises n optical signal modulators (1-4) for modulating respective optical signals under the control of respective isochronous electrical signals (DI). Multiplexing means (7-14) is provided for time division...  
WO/1986/005342A1
A method and system for demultiplexing an optical signal having a bit rate in the order of GBit/second. The system comprising optical demultiplexing means including delay units (8-10) and sampling devices such as optical modulators (4-7)...  
WO/1986/005309A1
A method and apparatus for generating signals representing a plurality (p) of n bit words corresponding to respective input signals. The apparatus comprises a basic word generator (7) for generating first signals representing m basic wor...  
WO/1986/001955A1
A method of processing digital information prior to recording comprises converting input digital words into code words, each of the same period as the input digital word but containing a greater number of time slots than the number of bi...  
WO/1985/005234A1
A high-speed digital transceiver (10, 33) for use in a PBX environment comprising twisted-pair wire cables (22) interconnecting like transceivers, each transceiver being operative to exchange voice, data and control information in a pack...  
WO/1985/004298A1
A high speed and relatively error free communications system which enables the high speed transmission of data at a 19.2 kilobit per second rate. The data is transmitted over the same communications medium as voice transmissions, the dat...  
WO/1985/002733A1
A fiber optical digital data transmitting system, which has the capability of transmitting and accurately reproducing digital data signals at the receiver (16) even when the optical signal is attenuated in the fiber optic transmitting me...  
WO/1985/002074A1
Pulse width decoder which receives a double frequency modulated (DFM) wave form and recovers therefrom the contained NRZ-L data and clock information. Basically, the decoder looks for long and short pulses in the DFM waveform. A long pul...  
WO/1985/000941A1
As shown in (Fig. 2A), the fall time of an ECL gate (20) is precisely controlled using a fixed capacitor (46) which is connected between the positive supply voltage and the ECL gate output terminal (44), and a variable current source (48...  
WO/1985/000067A1
In a method of modulating a data bit series consisting of a first value (e.g., 1) and a second value (e.g., 0), inversion is used as a condition transition so that the following conditions (a) to (d) are satisfied: (a) inversion occurs a...  
WO/1984/005002A1
A data signal is processed to change its form and spectral content without introducing undesirable frequency and amplitude effects. Multiple data signal states, which determine the essential characteristics of the output signal wave conf...  
WO/1984/002817A1
A digital signal transferring method wherein in a serial transfer of a digital data signal of N-channel (N represents 16, 24, 32, for example), the digital data is divided into groups each consisting of data of K channel (K represents 8,...  

Matches 401 - 450 out of 5,342