Patent application number | Description | Published |
20080225932 | DATE TRANSMISSION DEVICE - A data transmission device for sending back data on a reflected wave of an unmodulated carrier, the data transmission device includes: an antenna adapted to receive an unmodulated carrier Fo from a data reader with which data is to be exchanged and send a reflected wave of the unmodulated carrier Fo to the data reader; subcarrier oscillation means for generating a subcarrier frequency Fs; subcarrier modulation means for digitally modulating sending data on the subcarrier Fs; D/A conversion means for generating the analog modulated subcarrier wave Fs by converting a digital modulated signal, generated by the subcarrier modulation means, into analog form; and frequency mixing means for mixing the unmodulated carrier Fo and modulated subcarrier wave Fs to generate new modulated waves Fo+Fs and Fo−Fs. | 09-18-2008 |
20080298808 | Radio Communication System, Radio Communication Apparatus and Radio Communication Method as Well as Computer Program - It is possible to realize remote control in a reflection wave transmission system, and enhance operability for a mobile apparatus having a reflector. The mobile apparatus comprises a reflector and performs reflection wave transmission by carrying data on a reflection wave for unmodulated carrier. A reflection wave reader comprises an infrared light receiving section, receives and decodes a request signal sent as an infrared remote control command, transmits it to the mobile apparatus by an ASK modulated signal and then transmits the unmodulated carrier. The mobile apparatus transmits requested data by reflection wave. The mobile apparatus can be operated from an infrared remote controller and remote control distance can be extended. | 12-04-2008 |
20090143010 | COMMUNICATION SYSTEM AND COMMUNICATION APPARATUS - A communication system is disclosed which includes: at least one power line communication device configured to be connected with another power line communication device via a common power line for providing a commercial alternate-current power supply; and a communication terminal configured to include a modem for power line communication and a coil for exchanging power line communication signals with an external entity through electromagnetic coupling, the communication terminal sending and receiving the signals to and from the external entity through electromagnetic coupling between the coil and the power line. | 06-04-2009 |
20090175321 | COMMUNICATION SYSTEM AND COMMUNICATION APPARATUS - Disclosed herein is a communication system including: at least one power line communication apparatus connected via a general power line for supplying a commercial alternate current power; a communication terminal having a modem for power line communication, and a plurality of first coils having different directivities; and a coupling apparatus, connected to a power line, having a filter for attenuating an alternate current component of the power line, and a second coil arranged after the filter; wherein the communication terminal executes mutual communication with any of the power line communication apparatus connected via the general power line through proximity communication based on an electromagnetic coupling action that is generated between the plurality of first coils and the second coil when the communication terminal is brought to the proximity of a coupling surface of the coupling apparatus. | 07-09-2009 |
20090243804 | COMMUNICATION SYSTEM AND COMMUNICATION DEVICE - The present invention provides a communication system of a backscatter type, the communication system including: a reflector for transmitting data by a reflected wave formed by subjecting a non-modulated wave to a modulation process; and a reflected wave reader for reading the data from the modulated reflected wave signal from the reflector. | 10-01-2009 |
20090256684 | COMMUNICATIONS SYSTEM AND MEMORY CARD - Disclosed herein is a communications system in which a transponder having no radio wave generating source executes data transmission with a reader/writer. The transponder is incorporated in a memory card having a memory with which the reader/writer reads and writes information the memory card being used as loaded in a dedicated slot of a host device. The reader/writer transmits a beacon signal telling a service area at a predetermined time interval. The memory card waits for a beacon signal from the reader/writer within a preset period of time after the host device loaded with the memory card is powered on, executes a connection establishment procedure with the reader/writer upon reception of the signal within the preset period of time and, if the beacon signal has not been received within die preset period of time, enters a sleep state in which at least a wait state of the transponder is stopped. | 10-15-2009 |
20090268824 | Information Processing Apparatus and Signal Transmission Method - There is provided an information processing apparatus including an encoding unit that represents input data containing mutually different first and second bit values by a plurality of first amplitude values for the first bit value and a second amplitude value that is different from the first amplitude values for the second bit value, does not take an identical value consecutively, and perform encoding so that polarity of the amplitude value is reversed for each cycle, and a transmission unit that transmits a signal encoded by the encoding unit through a predetermined transmission line. | 10-29-2009 |
20090322479 | COMMUNICATIONS SYSTEM AND COMMUNICATIONS APPARATUS - A communications system configured to execute data transmission between a transponder having no radio wave generating source thereof and a reader/writer is provided. The communications system includes, a service permission level notifier configured to tell a service permission level for associated with a received signal level for permitting service acceptance from the reader/writer to the transponder, and an access controller configured to determine in the transponder whether the received signal level from the reader/writer is at the notified service permission level to determine accessibility to the transponder from the reader/writer. | 12-31-2009 |
20090323828 | INFORMATION PROCESSING APPARATUS AND SIGNAL DETERMINATION METHOD - There is provided an information processing apparatus, including a signal receiver that receives a signal encoded in such a way that a signal containing a first bit value and a second bit value, wherein the first bit value is represented by first amplitude values, the second value is represented by a second amplitude value, and polarity of the amplitude value is reversed in each period, a conversion processor that performs conversion to add a signal after being delayed by delaying an input signal by one period to the signal before being delayed on a signal received by the signal receiver, an inversion processor that performs inverse processing of the conversion on the signal output from the conversion processor, and an input data decoder that decodes an input data by determining the first and second values based on the amplitude value of the signal output from the inversion processor. | 12-31-2009 |
20100027708 | INFORMATION PROCESSING DEVICE AND SIGNAL PROCESSING METHOD - An information processing device is provided that includes a signal receiving portion, an absolute value conversion portion, and an input data decoding portion. The signal receiving portion receives a signal that is encoded such that mutually distinct first and second bit values are respectively expressed by pluralities of mutually distinct first amplitude values and second amplitude values, the first and second bit values also being encoded such that the same amplitude value does not occur twice in succession and such that the polarities of the amplitude values are inverted with each cycle. The absolute value conversion portion converts into absolute values the amplitude values of the signal that has been received by the signal receiving portion. The input data decoding portion decodes the first and second bit values based on the amplitude values in the signal that have been converted into absolute values by the absolute value conversion portion. | 02-04-2010 |
20100027710 | INFORMATION PROCESSING DEVICE AND BIDIRECTIONAL TRANSMISSION METHOD - In a provided information processing device, a first information processing module, within its transmission time segment, transmits an encoded signal in which mutually distinct first and second bit values are respectively expressed by pluralities of mutually distinct first amplitude values and second amplitude values, the same amplitude value not occurring consecutively and the amplitude value polarity being inverted with each cycle. Within a transmission time segment for a second information processing module, the first information processing module transmits a clock signal that corresponds to the cycle at which the polarity is inverted. The second information processing module extracts the clock signal by detecting the polarity inversions in the encoded signal, decodes the first and second bit values from the encoded signal using the clock signal, generates a transmission signal by controlling the amplitude values of the clock signal, and transmits the transmission signal in synchronization with the clock signal. | 02-04-2010 |
20100027728 | INFORMATION PROCESSING DEVICE, SIGNAL PROCESSING METHOD, AND SIGNAL TRANSMISSION METHOD - An information processing device includes: a signal receiving portion that receives a signal in which input data that contains first and second bit values different from one another is encoded such that the first bit value is expressed by first amplitude values and the second bit value is expressed by second amplitude values different from the first amplitude values, and such that the same amplitude value does not occur twice in succession and the polarities of the amplitude values are inverted with each cycle; a clock signal extraction portion that extracts a clock signal by detecting polarity inversions in the received signal; a clock signal subtraction portion that subtracts the extracted clock signal from the received signal; and an input data decoding portion that decodes the input data by determining the first and second bit values based on an amplitude value of the signal obtained by subtracting the clock signal. | 02-04-2010 |
20100054346 | Information Processing Apparatus, Signal Transmission Method and Decoding Method - There is provided an information processing apparatus, including a data encoding unit that generates an encoded signal in partial response mode having a transmission speed Fb by encoding input data; a clock signal addition unit that synchronously adds a clock signal at frequency Fb having an amplitude value larger than that of the encoded signal to the encoded signal generated by the data encoding unit; and a signal transmission unit that transmits the encoded signal obtained by the clock signal being added by the clock signal addition unit through a predetermined transmission line. | 03-04-2010 |
20100054359 | INFORMATION PROCESSING APPARATUS, DECODING PROCESSING METHOD AND SIGNAL TRANSMISSION METHOD - There is provided an information processing apparatus, including a signal receiving unit that receives a signal encoded in such a way that a signal containing a first bit value and a second bit value that are mutually different, wherein the first bit value is represented by a plurality of first amplitude values, the second bit value is represented by a second amplitude value that is different from the first amplitude values, a same amplitude value is not taken successively, and polarity of the amplitude value is reversed in each period, an amplitude square unit that squares an amplitude of the signal received by the signal receiving unit, and an input data decoding unit that decodes an input data by determining the first and second bit values based on the amplitude value of the signal output from the amplitude square unit. | 03-04-2010 |
20100061878 | FERRITIC STAINLESS STEEL SHEET FOR WATER HEATER EXCELLENT IN CORROSION RESISTANCE AT WELDED PART AND STEEL SHEET TOUGHNESS - A ferritic stainless steel sheet for a water heater with excellent corrosion resistance of welds and toughness includes, in terms of mass %, 0.020% or less of C, 0.30 to 1.00% of Si, 1.00% or less of Mn, 0.040% or less of P, 0.010% or less of S, 20.0 to 28.0% of Cr, 0.6% or less of Ni, 0.03 to 0.15% of Al, 0.020% or less of N, 0.0020 to 0.0150% of 0, 0.3 to 1.5% of Mo, 0.25 to 0.60% of Nb, and 0.05% or less of Ti, the remainder being composed of Fe and unavoidable impurities, and the ferritic stainless steel sheet satisfying the following formulae (1) and (2): | 03-11-2010 |
20100069039 | STORAGE MEDIUM, COMMUNICATION SYSTEM, AND CONTROL DEVICE - Various services relating to cellular phones are integrally provided on a SIM card at the initiative of carriers. A wireless communication function via a reflected-wave transmission system is mounted to a SIM card to allow access to a control interface of a SIM card from an external control device via a wireless communication. The SIM card is provided with a credit function for treating electronic money as well as a SIM function for allowing a carrier to treat subscriber information. Furthermore, a high-capacity of memory card function is added to the SIM card to allow access to the control interface of the memory card from a control device via the reflected-wave transmission system. | 03-18-2010 |
20100085988 | INFORMATION PROCESSING APPARATUS AND SIGNAL TRANSMISSION METHOD - An information processing apparatus is provided which includes a signal multiplexing unit for multiplexing a plurality of transmission signals, each in a different frequency band and not containing a DC component, and a power signal supplied from a DC power supply and generating a multiplexed signal, a single signal cable through which the multiplexed signal generated by the signal multiplexing unit is transmitted, and a signal separating unit for separating the multiplexed signal transmitted through the signal cable into signals, each in a frequency band of one of the plurality of transmission signals, and a signal in a frequency band of the power signal. | 04-08-2010 |
20100110939 | INFORMATION PROCESSING APPARATUS AND DUPLEX TRANSMISSION METHOD - There is provided an information processing apparatus includes a first module and a second module. The first module includes a first signal generator that produces a first signal by coding a first transmitted data into a waveform not including a direct-current component, having a polarity being inverted in each half period of a clock; a first signal sending unit that sends the first signal; and a signal subtracting unit that subtracts the first signal from a received signal. The second module includes a clock detecting unit that detects the clock based on the polarity inverting period of the first signal received from the first module; a second signal generator that produces a second signal by coding a second transmitted data into a waveform not including the direct-current component; and a second signal sending unit that sends the second signal while the second signal is synchronously added to the first signal. | 05-06-2010 |
20100158100 | INFORMATION PROCESSING APPARATUS AND SIGNAL TRANSMISSION METHOD - There is provided an information processing apparatus includes, an encoding section for encoding a bit string to generate a data signal having an amplitude of a | 06-24-2010 |
20100254379 | TRANSMISSION SYSTEM AND TRANSMISSION APPARATUS - Network connection of a terminal such as a mobile apparatus can be implemented at a transmission speed higher than that by a radio LAN. A connection method between a terminal and a connection apparatus is configured by replacing a radio LAN with electromechanical coupling, and transmission between the terminal and the connection apparatus is carried out using a baseband as it is without up conversion into a radio frequency band. This eliminates a bottleneck by the throughput of the radio LAN and eliminates the problems of the cost and the power consumption which arise from up conversion of a transmission signal. Further, bridging of data can be carried out by simple code conversion, and since the apparatus configuration is simplified, the cost can be reduced. | 10-07-2010 |
20100287434 | SIGNAL PROCESSING DEVICE AND ERROR CORRECTION METHOD - Provided is a signal processing device including a signal receiving unit for receiving a multilevel signal having a signal waveform that is obtained by synchronously adding an encoded signal generated based on a specific coding rule and a clock which has an amplitude larger than the encoded signal and for which the transmission speed is half that of the encoded signal, an amplitude level detection unit for detecting an amplitude level of the multilevel signal received by the signal receiving unit, a violation detection unit for detecting a bit position at which rule violation of the specific coding rule occurred, based on a change pattern of the amplitude level detected by the amplitude level detection unit, and an error correction unit for correcting a detection value of the amplitude level corresponding to the bit position detected by the violation detection unit so that the rule violation is resolved. | 11-11-2010 |
20110037759 | INFORMATION PROCESSING APPARATUS, AND SIGNAL TRANSMISSION METHOD - Provided is an information processing apparatus which includes a first module including a signal addition unit that generates an addition signal by adding a data signal to a clock, a signal subtraction unit that generates a subtraction signal by subtracting the data signal from the clock, a first signal transmission unit that transmits the addition signal through a first transmission line, and a second signal transmission unit that transmits the subtraction signal through a second transmission line, and a second module including a data component extraction unit that extracts a component of the data signal by subtracting the subtraction signal received through the second transmission line from the addition signal received through the first transmission line, and a clock component extraction unit that extracts a component of the clock by adding the subtraction signal received through the second transmission line to the addition signal received through the first transmission line. | 02-17-2011 |
20110038428 | ENCODING APPARATUS, INFORMATION PROCESSING APPARATUS, ENCODING METHOD, AND DATA TRANSMISSION METHOD - Provided is an encoding apparatus including an encoding unit that generates encoded data formed from a sequence of base-k data in which m pieces (m02-17-2011 | |
20110299512 | COMMUNICATION DEVICE, COMMUNICATION SYSTEM, MODE SWITCHING METHOD, AND PROGRAM - Provided is a communication device including a first communication unit for performing communication by a communication scheme, the communication scheme being for applying voltage from a signal electrode that is in contact with or that is brought into proximity of a human body, generating an electric near field on a human body surface and performing transmission, a second communication unit different from the first communication unit, a switching signal detection unit for detecting, from signals intermittently received by the first communication unit, a mode switching signal for switching the second communication unit from a power save mode to a normal mode, and a switching control unit for switching the second communication unit from the power save mode to the normal mode in a case the mode switching signal is detected by the switching signal detection unit. | 12-08-2011 |
20120076186 | COMMUNICATION SYSTEM AND COMMUNICATION APPARATUS - Disclosed herein is a communication system including: at least one power line communication apparatus connected via a general power line for supplying a commercial alternate current power; a communication terminal having a modem for power line communication, and a plurality of first coils having different directivities; and a coupling apparatus, connected to a power line, having a filter for attenuating an alternate current component of the power line, and a second coil arranged after the filter; wherein the communication terminal executes mutual communication with any of the power line communication apparatus connected via the general power line through proximity communication based on an electromagnetic coupling action that is generated between the plurality of first coils and the second coil when the communication terminal is brought to the proximity of a coupling surface of the coupling apparatus. | 03-29-2012 |
20140012146 | MEASUREMENT APPARATUS, MEASUREMENT METHOD, PROGRAM, STORAGE MEDIUM, AND MEASUREMENT SYSTEM - There is provided a measurement apparatus including a blood pressure calculation unit configured to calculate a blood pressure value based on electrocardiography information relating to an electrocardiogram of a measurement subject and pulse wave information relating to a pulse wave of the measurement subject, and a chest contact measurement unit that includes an electrocardiography measurement unit that is brought into contact with a chest of the measurement subject to measure the electrocardiogram and a pulse wave measurement unit configured to measure the pulse wave from a pulse wave detection site of the measurement subject. | 01-09-2014 |
20140055238 | COMMUNICATIONS SYSTEM AND COMMUNICATIONS APPARATUS - A communications system configured to execute data transmission between a transponder having no radio wave generating source thereof and a reader/writer is provided. The communications system includes, a service permission level notifier configured to tell a service permission level for associated with a received signal level for permitting service acceptance from the reader/writer to the transponder, and an access controller configured to determine in the transponder whether the received signal level from the reader/writer is at the notified service permission level to determine accessibility to the transponder from the reader/writer. | 02-27-2014 |
20140155767 | BIOLOGICAL INFORMATION MEASUREMENT APPARATUS, BIOLOGICAL INFORMATION MEASUREMENT SYSTEM, BIOLOGICAL INFORMATION MEASUREMENT METHOD, AND PROGRAM - There is provided a biological information measurement apparatus including a biological information acquisition unit configured to acquire at least first waveform information relating to a first waveform representing a beat of a measurement subject measured at a first measurement site, and as second waveform information relating to a second waveform representing the beat of the measurement subject measured at a second measurement site different from the first measurement site, information relating to a timing corresponding to a second feature which is a characteristic feature of the second waveform, and a pulse wave transit time calculation unit configured to, based on the first and second waveform information, calculate a pulse wave transit time, which is a difference between a timing corresponding to a first feature which is a characteristic feature of the first waveform and the timing corresponding to the second feature which is a characteristic feature of the second waveform. | 06-05-2014 |