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JP4603282B2 |
The invention relates to a semiconductor memory device and, more particularly, to an interface system for a semiconductor memory device. The interface includes a transmitter capable of encoding first and second input signals as a plural-...
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JP4599167B2 |
A system is disclosed for controlling a plurality of pulse-width-modulated switching power converters. The system includes a sample and hold circuit which is configured to receive information at time-separated intervals. The information ...
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JP4599168B2 |
A system is disclosed for controlling a plurality of pulse-width-modulated switching power converters. The system includes a sample and hold circuit which is configured to receive information at time-separated intervals. The information ...
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JP4559112B2 |
The method involves dividing an input data stream by a preset length and multiplexing the stream using the multiplexed information based on a preset multiplexing method to provide a multiplexed data stream. The multiplexed stream is weak...
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JP2010220154A |
To provide a loudspeaker driving system in which a switch is connected in series to a loudspeaker and a current flowing through the switch is controlled by pulse output from a PWM circuit.One current terminal of a switch element is conne...
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JP4554361B2 |
A bi-phase decoder suitable for use in a broadcast router and an associated method for extracting subframes of digital audio data from a stream of digital audio data. Logical circuitry within the bi-phase decoder extracts subframes of th...
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JP4551217B2 |
Methods and apparatus for transforming data into a format which may be efficiently stored in a non-volatile memory are disclosed. According to one aspect of the present invention, a method for storing information of a first data format i...
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JP4541553B2 |
The present invention relates to a method for conditioning a received signal that transmits coded data, wherein the coding of the data includes a defined coding clock pulse and the signal includes edges produced in accordance with the co...
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JP4540652B2 |
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JP4533279B2 |
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JP4536412B2 |
A recording and reproducing apparatus (20) includes an RLL encoder (207) an RLL decoder (237).The RLL encoder (207) encodes an information bit string to a code bit string of a run-length-limited code at a high encoding rate satisfying a ...
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JP4489973B2 |
A device is disclosed for encoding a stream of databits of a binary source signal (S) into a stream of databits of a binary channel signal (C), wherein the bitstream of the source signal is divided into n-bit source words (x1, x2), which...
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JP4486871B2 |
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JP4477623B2 |
A pulse width modulator (10) for converting a digital signal into a PWM signal, comprising a plurality of integrators (11) with integrator gains (12) arranged in series, a comparator (17) for comparing the output of the last integrator (...
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JP4464605B2 |
The present invention is configured to include a code conversion circuit that is supplied with first and second signals having a first bit rate, and generates and outputs, through Exclusive-OR operation, third and fourth signals from whi...
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JP4464446B2 |
Methods and apparatus for encoding and decoding information in broadcast or recorded segments signals are described. In certain embodiments, an audience monitoring system encodes identification information x(w) in the audio signal portio...
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JP4436544B2 |
Signals to be received are traced accurately for each data bit during the transfer of the first half data bit. Signal edges or sides of impulses (F1-F5) for each bit are utilized to synchronize a signal input with a control signal and to...
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JP2010057174A |
To provide a novel demodulation system that makes high-speed data transmission possible.In the demodulation method, a variable delay circuit 312 delays a carrier signal SC having a prescribed frequency, and outputs a modulated signal SES...
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JP4426112B2 |
A method for combining signals being conveyed across a digital interface is disclosed. In one embodiment, a subharmonic of a frequency is superimposed on asynchronous data. The subharmonic can be used to carry a frequency reference acros...
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JP4384772B2 |
A method and apparatus are provided for modulating code for use with written optical disks such as digital video disks (DVD). The invention falitates 8/16 modulation by eliminating duplicate code conversion and by reducing the number of ...
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JP4351156B2 |
A coder is fed with precoded data such that the absolute value of the RDS of the code words as produced by the coder is limited. This is achieved by ensuring that in a group of 2 code words the RDS of the first code word is compensated b...
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JP4320414B2 |
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JP4315764B2 |
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JP4311437B2 |
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JP4303090B2 |
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JP4265487B2 |
A reader device (100) and RF tag (400) improves the efficiency of frequency usage without increasing bandwidth using wireless communication from the reader to the tag and provides a transmission method that improves the power supply effi...
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JP4246841B2 |
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JP4243179B2 |
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JP4243726B2 |
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JP4221302B2 |
A method and apparatus for a pulse width modulated (PWM) signal (30, 130) is provided. The input is a digital signal which is a modulated signal (24, 124). In the illustrated form, the modulated input signal is either a PDM signal or a P...
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JP4215579B2 |
To provide an efficient, economical and high precision pulse time difference encoding circuit as compared with a conventional one in which the circuitry can be simplified, complexy in production of hardware is solved and time difference ...
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JP4214850B2 |
A device for performing predetermined processing on an input signal that may have a signal amplitude of more than one bit. The input signal is obtained by subjecting one-bit serial signals to predetermined signal processing, wherein the ...
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JP4211395B2 |
The present invention provides an optical disc recording method of irradiating an optical beam to an optical disc including a basal plate made of synthetic resin which has a concavo-convex pattern formed in advance on one surface thereof...
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JP2009004997A |
To provide a decoding technique capable of performing error correction at a high speed when decoding data encoded by a predetermined code rule, in a simple structure.A decoding section assigns, based on an inter-code distance between a b...
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JP4203544B2 |
A transition splitting apparatus and method reduce a maximum transition rate of a digital signal. The apparatus and method are particularly useful for digital signal processing in communications and for performing digital transition timi...
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JP4197755B2 |
A signal transmission system is constructed to transmit data over a signal transmission line without requiring precharging the signal transmission line for every bit, by eliminating the intersymbol interference component introduced by pr...
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JP4193262B2 |
A decoding apparatus and data reproduction apparatus which can perform correction of 1T and 2T which inherently cannot exist as EFM signals, reduce processing of an error correction circuit, and improve the playability. Provision is made...
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JP4189757B2 |
Method for converting a pulse coded digital signal (PCM, f(t)) into a pulse width modulated signal (PWM) in which the digital signal (PCM, f(t)) is multiplied by at least a first, second or greater order derivative of the initial signal....
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JP4184160B2 |
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JP4181532B2 |
A duo-binary encoder performs a parallel processing and an optical duo-binary transmission apparatus using the encoder to enhance transmission capability. The duo-binary encoder has a judgment unit for judging whether an odd number or ev...
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JP4178795B2 |
The present invention relates to a modulation apparatus and method for more accurately determining a value of a control bit to be inserted into a data sequence, and to a DSV-control-bit generating method. A 1-7 PP data conversion unit 52...
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JP4169279B2 |
A rate 7/8 MTR code encoding/decoding method and apparatus. The encoding method includes: generating a rate-7/8 MTR code for inputting 7-bit data and outputting a predetermined 8-bit codeword; checking whether codewords satisfy a predete...
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JP4167732B2 |
A synchronisation signal generator (11) gives the clock start signal and a clock generator and synchroniser (12) produces transmission, coding and decoding signals as well as a low frequency clock. The decoder (13) samples during a recep...
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JP4171493B2 |
Methods and apparatus for encoding and decoding information in broadcast or recorded segments signals are described. In certain embodiments, an audience monitoring system encodes identification information x(w) in the audio signal portio...
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JP4161487B2 |
A data-decoding apparatus having bit-detecting section 4. In the apparatus, an RF signal is reproduced from a recording medium and converted to digital data. If the RF signal has a level (amplitude) equal to a comparator level, the bit-d...
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JP4162814B2 |
A method of decoding a digital signal includes processing the digital using a delay operation in accordance with a frequency characteristic of 1+D, where D is an output signal of the delay element. The processed digital signal is then co...
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JP4158997B1 |
According to the present invention, an image coding apparatus provides a run-length encoding unit RLE1 that subjects quantized coefficients which are obtained by quantizing frequency components of an image signal to a variable length cod...
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JP4158999B1 |
According to the present invention, an image coding apparatus provides a run-length encoding unit RLE1 that subjects quantized coefficients which are obtained by quantizing frequency components of an image signal to a variable length cod...
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JP4158998B1 |
According to the present invention, an image coding apparatus provides a run-length encoding unit RLE1 that subjects quantized coefficients which are obtained by quantizing frequency components of an image signal to a variable length cod...
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JP4158996B2 |
According to the present invention, an image coding apparatus provides a run-length encoding unit RLE1 that subjects quantized coefficients which are obtained by quantizing frequency components of an image signal to a variable length cod...
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