Class 360/42 - Phase code

Subclass of Class 360 - Dynamic magnetic information storage or retrieval
Definition: Subject matter wherein a transition in polarity in a first
No. of patents: 53
Last issue date: 03/25/2008

«First «Previous1 2 Next»Last»

Number	Title	Issue Date
7347358	Depositing items of value A method of depositing items of value, the method comprising 1) receiving a tamper evident and coded container holding the items of value, the code relating to the content of the container; 2) verifying that the pa...	03/25/2008
7302749	Method of making a two-layer lap winding for a multiphase electrical machine The method of making a two-layer lap winding (12) for a multiphase electrical machine includes the steps of winding a first coil unit (20) of a first phase winding (14) around a winding bar (10); subsequently laying a coil connector (1...	12/04/2007
7205691	Alternator sub-component construction built inside existing automotive generator housing An alternator sub-component construction is built inside an original antique generator housing or a replica housing, thereby having the appearance of an original generator but functioning with modern and improved alternator capabilities. ...	04/17/2007
7170710	Magnetic recording and reproduction apparatus A magnetic recording and reproduction apparatus includes a cylinder; a first chassis section; a second chassis section; and at least first, second and third tape guide members. The second chassis section is movable between a first position and a second position. Whe...	01/30/2007
7031348	Apparatus and method of splicing digital video streams A splicing system includes a splicer for seamlessly splicing togther digitally encoded data streams. In a preferred embodiment, the splicer preferably parses successive splice buffers of data stream data for a splice-out point and a splice-in point, closing an initi...	04/18/2006
7023638	Data storage device, data read correction mechanism, and data read control method A correction mechanism for use in a data storage system that allows data to be read even if the recorded data has been phase shifted. ...	04/04/2006
7002762	Method for intersymbol interference removal in data recovery In recovering data originally written on a carrier of magnetic media after a catastrophic failure, data may be read without prior knowledge of the write channel by which the data was originally written and in the presence of intersymbol interference of the readback ...	02/21/2006
6977875	Tracking system for recording/reading a data medium and recording medium The invention relates to a system for reading a magnetic medium having several tracks of data which can be read in parallel with a detection device having at least as many detectors as there are tracks, making it possible to read simultaneously and at regular interv...	12/20/2005
6587291	Asynchronously sampling wide bi-phase codes Sampling data with wide bi-phase code symbols includes sampling a wide bi-phase code symbol in the data a number (N) of times to produce samples of data, selecting a subset of the samples, determining which sample in the subset of samples has a largest ma...	07/01/2003
6347353	Information medium having digital signals recorded thereon An information medium having digital signals recorded therein includes a disk having first and second recording surfaces. The digital signals are in the form of a data frame including a lead-in block and n data blocks. The lead-in block has a same format ...	02/12/2002
6154806	Method for recording digital signals on multiple-layered disks A method of recording digital signals on a disk having at least a first recording surface and a second recording surface. The digital signals are in the form of a data frame including a lead-in block and n data blocks. The lead-in block has a same format ...	11/28/2000
5889820	SPDIF-AES/EBU digital audio data recovery A circuit for decoding an input signal includes a measurement circuit having an input to receive a timing clock signal that is asynchronous with clocking of the input signal, to measure duration of a plurality of pulses received on the input signal in rel...	03/30/1999
5862005	Synchronous detection of wide bi-phase coded servo information for disk drive A magnetic disk drive data storage disk defines recording tracks divided into data sectors by narrow servo spokes. A data sector lying between servo spokes is recorded with user data encoded in accordance with a code having a predetermined distance and us...	01/19/1999
5128809	Coherent multi-frequency synthesis Methods and circuitry for generating sector and data cell timing frequencies for banded variable frequency sector disc drive systems with dedicated plus embedded servo positioning systems which have the timing signals synchronized to servo track informati...	07/07/1992
4881059	Manchester code receiver An improved Manchester code receiver is disclosed which samples the received signal and subtracts from that sample a previous sample of the received signal delayed by a half-bit time interval. A timing extractor selects sample timing from the central zero...	11/14/1989
4788605	Receive Manchester clock circuit A circuit for producing a receive Manchester clock from serially received Manchester encoded data signals. The encoded data signals are differentiated to produce a primary clock pulse for each voltage transition of the applied signals. Each primary clock ...	11/29/1988
4769723	Multiplexed bus data encoder and decoder for facilitating data recording Digital data recorded in Manchester code in a 1553 MUX bus has the data portion of each word converted into NRZ-L format with the synchronization prefix or portion of each word converted into a corresponding NRZ-L formatted portion according to a predeter...	09/06/1988
4752942	Method and circuitry for extracting clock signal from received biphase modulated signal A clock pulse is derived from a received biphase modulated signal by feeding the biphase modulated signal and a signal indicative of the time points at which a code ONE of the received signal changes to a code ZERO and vice versa, to an exclusive OR circu...	06/21/1988
4745626	Decoder A decoder is described for a self-clocking code, e.g. a bi-frequency Manchester code. Transitions are detected in the encoded data and are clocked into a shift register by a clock having a frequency equal to a multiple of the data bit rate. A logic networ...	05/17/1988
4714968	Digital apparatus for data recovery system A digital apparatus for data recovery system wherein data is recorded in FM or MFM code on magnetic media, comprises a measuring unit that in correspondence of a read pulse n as an input, supplies as an output, information related to the actual duration o...	12/22/1987
4675884	Decoding circuit A decoding circuit is operative to decode a differential Manchester code consisting of four symbols "J", "K", "1" and "0" each composed of two consecutive signal elements. For detection of the symbol "J" and consequent determination of the symbol boundary...	06/23/1987
4672363	Frequency modulation coding methods with reduced transition intervals There is provided a method of modulating a data bit series consisting of a first value (e.g., 1) and a second value (e.g., 0) whereby a transition as a state transition is caused so as to satisfy the following conditions of (a) to (d). (a) The transition ...	06/09/1987
4656647	Pulsed bi-phase digital modulator system A short pulse of a small leading phase angle deviation of the carrier frequency at the start of a clock period and a short pulse of a small lagging phase angle deviation of the carrier frequency at the middle of a clock period encodes a digital one, while...	04/07/1987
4606053	Bi-phase decoder A facility is provided for recovering the clock and data from a data stream transmitted in the bi-phase code even if the data stream contains no sync bits and if the transmission speed varies. For clock recovery, a nonretriggerable monostable multivibrator is ...	08/12/1986
4599736	Wide band constant duty cycle pulse train processing circuit A wide band constant duty cycle pulse train processing circuit where the pulse train frequency varies is proposed. The circuit serves primarily to obtain the basic clock in decoding signals encoded in the bi-phase mark code and includes a pulse-shaping or...	07/08/1986
4596023	Balanced biphase transmitter using reduced amplitude of longer pulses The data communication system includes an encoder to receive nonreturn-to-zero data signals and convert them to biphase signals, a current mode transmitter for transmitting the biphase signals, and a communication link connected to the transmitter. The en...	06/17/1986
4592072	Decoder for self-clocking serial data communications Apparatus for decoding a self-clocking, encoded signal wherein a series of data bits is encoded such that for each data bit, the encoded signal contains a first transition, and, for each data bit for which the succeeding data bit has the same binary value...	05/27/1986
4578799	Method and apparatus for recovering data and clock information from a self-clocking data stream A method and apparatus are disclosed for recovering data and clock information from high speed self-clocking data streams at rates of up to approximately 50 Mbps. The self-clocking data stream has a predetermined bit period and two voltage levels with neg...	03/25/1986
4573169	Communication system for bi-phase transmission of data and having sinusoidal low pass frequency response A data communication system for transmission of bi-phase signals modulated by data symbols and in which the signals are filtered in accordance with a frequency response which approximates zero at 0 Hz and at and exceeding the frequency 3/(2T) H...	02/25/1986
4556869	Multi-function data signal processing method and apparatus 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 configuration, are uti...	12/03/1985
4542420	Manchester decoder A decoder for Manchester encoded data signals in which the encoded data signals are applied to a first circuit which produces a primary pulse at each voltage transition of the applied signals. The primary pulse enables a delay line oscillator which after ...	09/17/1985
4525848	Manchester decoder A circuit for generating a timing signal in a Manchester decoder comprises an oscillator 10, a frequency divider 14 for dividing signals derived from the oscillator, and a comparator 18 for comparing the times of transitions in the output signal of the di...	06/25/1985
4513329	Manchester decoder clock multiplier The circuit comprises a differentiator, two nonretriggerable-gated-monoste-multivibrators, a clock decoder, a data flip-flop unit, and a multiphase and frequency logic circuit. The differentiator checks the incoming Manchester encoded signal and divides ...	04/23/1985
4475183	Optical disk retrieval methods, media and systems employing digital data of high fractional bandwidth High information density retrieval method and system which employ the scanning of an optical disk, having a thermally-deformable record layer overlying a reflective support, with a read light beam. The optical disk tracks contain information in the form o...	10/02/1984
4468791	Method and facility for decoding a biphase-code and application of the method In a method for decoding a received biphase-coded signal, a signal edge (2) is detected and its polarity determined in intervals of two periods (2T) for reconstructing the transmitted data. This allows the transmission rate of the signals to be increased ...	08/28/1984
4383281	Method and arrangement for magnetic digital recording with high frequency biasing with suppression of DC components in the recording signals The invention relates to the generation of a digital magnetic recording signal modulated in phase in correspondence with the transitions of the corresponding data signal. According to the invention, the D.C. component of the recording signal is suppressed...	05/10/1983
4382249	Apparatus and method for decoding information An apparatus and method for decoding input signals on four lines to produce an outgoing information stream of binary bits....	05/03/1983
4377805	Magnetic recording A method and apparatus for encoding or decoding data in accordance with a coding format, referred to herein as Y$c; and which is based on the 3PM coding format. Data encoded in accordance with the Y$c; format is generated by initially encoding, at a...	03/22/1983
4367496	Method and arrangement for magnetic digital recording with high frequency biasing The invention relates to a method and circuit arrangement for magnetic recording of a digital data signal composed of a set of transitions. A recording signal is formed by superposition on the data signal of a high frequency, constant amplitude, magnetic ...	01/04/1983
4360749	Automotive alternator construction To facilitate assembly of an automotive alternator, the alternator housing (11) is separated into two axially split half-shells (11a, 11b), the dividing line (11c) preferably passing through the axis of the shaft (18) of the alternator. The alternator ass...	11/23/1982

«First «Previous1 2 Next»Last»

PatentStorm

Quotables

PatentStorm News

Class 360/42 - Phase code