Patent application number | Description | Published |
20080212723 | SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND PROGRAM - In a signal processing apparatus adapted to process a signal transmitted via a transmission path, distortion of a waveform of a signal value of a specific symbol is predicted on the basis of a characteristic of distortion depending on values of symbols transmitted before the specific symbol, and the distortion is removed from the waveform of the received signal thereby producing a distortion-removed waveform. A comparison value is calculated for each allowable value of the specific symbol by subtracting a predicted signal value of the specific value from the distortion-removed waveform. A symbol value corresponding to the smallest comparison value is determined as the value of the specific symbol. An error suspicion level value indicating the degree of suspicion of being incorrect is calculated for each of the predetermined number of symbols, and already determined values of symbols are corrected in accordance with the error suspicion level values. | 09-04-2008 |
20080279267 | SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND PROGRAM - A signal processing apparatus configured to process a signal transmitted via a transmission path where a waveform represented by a signal value of a particular symbol is stationarily distorted in accordance with values of symbols transmitted prior to the particular symbol, including the following elements: a receiving unit configured to receive a test signal which is the signal including symbols set to predetermined values via the transmission path; an obtaining unit configured to obtain the signal value of the particular symbol from the test signal received by the receiving unit; and a characteristic computing unit configured to compute a characteristic of distortion of the waveform represented by the signal value of the particular symbol in accordance with the values of the symbols transmitted prior to the particular symbol on the basis of waveforms represented by signal values obtained by the obtaining unit from a plurality of test signals. | 11-13-2008 |
20090100301 | RECEPTION DEVICE, RECEPTION METHOD, INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM - A reception device configured to receive a signal of a transmitted bit string transmitted from a transmission device which transmits a bit string includes: a receiving unit arranged to receive a signal from the transmission device and output a received bit string corresponding to the transmitted bit string; a storing unit arranged to store an error rate table wherein said received bit string is correlated with an error rate of post-data which is data of one bit or greater received following the received bit string being in error; and an error correcting unit arranged to perform error correcting of the post-data of the received bit string. | 04-16-2009 |
20090146886 | ANTENNA DEVICE - A planar antenna device is mounted on a board including a dielectric layer and two conductor layers vertically sandwiching the dielectric layer. The upper conductor layer includes a first radiating element having an end portion connected through a via hole to a ground formed by the lower conductor layer, a second radiating element having an open end portion, first and second ground conductors connected to respective base portions of the first and second radiating elements via resistors, and a feeder line configured to feed power to the first and second radiating elements. | 06-11-2009 |
20090153405 | ANTENNA DEVICE - A planar antenna device includes a dielectric layer and two conductor layers vertically sandwiching the dielectric layer. The lower conductor layer is used as a ground, and the upper conductor layer forms a radiating element having a structure in which four or more radiating element pieces of different sizes are connected to a feeder line. | 06-18-2009 |
20090174584 | TRANSMISSION DEVICE AND TRANSMISSION METHOD, INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD, AND PROGRAM - A transmission device configured to transmit a transmission bit string which is an arrangement of a unit bit string of multiple N bits includes: a conversion unit configured to convert the unit bit string into a converted bit string in accordance with a conversion table obtained by obtaining an error rate wherein a k'th bit out of the N bits is in error; obtaining an error expectancy which is an expectancy that a significant bit of the N bits in the unit bit string will err; and creating a conversion table that correlates the unit bit string and a converted bit string obtained by converting the insignificant bit of the unit bit string to a smallest error expectancy bit pattern which is a bit pattern that minimizes the error expectancy of the multiple bit patterns; and a transmission unit configured to transmit the converted bit string. | 07-09-2009 |
20090232237 | MODULATING DEVICE AND METHOD, DEMODULATING DEVICE AND METHOD, PROGRAM, AND RECORDING MEDIUM - A modulating device configured to perform modulation with the orthogonal frequency division multiplexing method, includes: a modulating unit configured to modulate main information with the orthogonal frequency division multiplexing method; and a determining unit configured to determine a subcarrier pattern employed when modulating the main information by the modulating unit based on additional information relating to the main information. | 09-17-2009 |
20090279640 | TRANSMISSION APPARATUS AND METHOD, RECEPTION APPARATUS AND METHOD, AND PROGRAM - A transmission apparatus includes a modulating section configured to modulate a baseband signal by using a carrier wave; a determining section configured to determine a pattern of the carrier wave, in accordance with a characteristic of a transmission channel on which a waveform represented by a signal value of a specific symbol is stationarily distorted according to a value of a symbol transmitted before or after the specific symbol; and a transmitting section configured to transmit a modulation signal through the transmission channel, the modulation signal being obtained by modulation using the determined carrier-wave pattern. | 11-12-2009 |
20090309679 | CONNECTION METHOD AND SUBSTRATE - A connection method includes the step of connecting, using a line on a dielectric element, two points through which a signal flows, the two points having different heights and the widths of the line at the positions of the two points having been adjusted on the basis of the thickness of the dielectric element. | 12-17-2009 |
20110028092 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A communication device includes a proximity wireless communication antenna for contactless proximity wireless communication with a counterpart instrument antenna in proximity, a first wireless communication processing unit to conduct contactless proximity wireless communication using the proximity wireless communication antenna, a second wireless communication processing unit to conduct wireless communication in a wireless communication format different from that of the first processing unit, a ground potential to be disposed in a surrounding area of the proximity wireless communication antenna and to be connected to a counterpart instrument ground potential when the instrument is in proximity, a detection unit to detect that the counterpart instrument is connected while allowing contactless proximity wireless communication, and a control unit to restrict wireless communication with the second processing unit when the detection unit detects connection and to remove the restriction after connected to the counterpart instrument ground potential with the ground potential during the restriction. | 02-03-2011 |
20110043305 | COUPLER AND COMMUNICATION SYSTEM - A coupler includes a first conductive pattern provided on a substrate having insulating property, a second conductive pattern provided on the substrate and placed in opposition to the first conductive pattern, a third conductive pattern provided on the substrate, a fourth conductive pattern provided on the substrate and placed in opposition to the third conductive pattern, a ground potential portion placed around positions on the substrate where the first conductive pattern, the second conductive pattern, the third conductive pattern, and the fourth conductive pattern are placed, a first resistor connecting between the first conductive pattern and the second conductive pattern placed in opposition to each other, and a second resistor connecting between the third conductive pattern and the fourth conductive pattern placed in opposition to each other. | 02-24-2011 |
20110045769 | COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND METHOD FOR COMMUNICATION - A communication device includes the following elements. A transmission and reception processing unit processes a transmission signal and a reception signal. A transmission amplifier is supplied with a binary transmission signal switching between a high level and a low level and is capable of making a choice between amplifying the transmission signal and entering a high-impedance state at an output. An antenna is supplied with a transmission signal output from the transmission amplifier. A comparator compares a signal received by the antenna with threshold values to obtain a reception signal, and supplies the reception signal to the transmission and reception processing unit. A capacitor is connected between the transmission amplifier and the antenna or between the antenna and the comparator. A control unit allows the transmission amplifier to be in the high-impedance state for a period during which the transmission and reception processing unit receives a reception signal. | 02-24-2011 |
20120182083 | CONNECTION METHOD AND SUBSTRATE - A connection method includes the step of connecting, using a line on a dielectric element, two points through which a signal flows, the two points having different heights and the widths of the line at the positions of the two points having been adjusted on the basis of the thickness of the dielectric element. | 07-19-2012 |