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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Application No. | Application Title | Issue Date |
| 20110286542 | HART TRANSMITTER/RECEIVER SYSTEMS One embodiment of the present invention relates to a communications system. The system includes a Highway-Addressable Remote Transducer (HART) transmitter comprising a direct memory access (DMA) module configured to access at least one transmitter lookup table (LUT) usi... | 11/24/2011 |
| 20100284485 | CONTROL SYSTEM METHODS AND APPARATUS FOR INDUCTIVE COMMUNICATION ACROSS AN ISOLATION BARRIER Improved control apparatus and methods transfer information between devices, such as controllers and field devices, utilizing a modulator that generates a pulse width modulated (PWM) signal containing information to be transferred by a first of the devices, e.g., the co... | 11/11/2010 |
| 20100117858 | METHOD AND SYSTEM FOR COST-EFFECTIVE POWER LINE COMMUNICATIONS FOR SENSOR DATA COLLECTION A method and system includes a solar panel. A power bus is coupled to the solar panel. The power bus supports transmission of AC communication signals. A slave node, coupled to the power bus, transmits information regarding solar panel performance. A master node, remote... | 05/13/2010 |
| 20090274238 | MODULATING APPARATUS, MOBILE COMMUNICATION SYSTEM, MODULATING METHOD, AND COMMUNICATION METHOD An encoder encodes sound data and the like to generate a binary signal. A mapper converts the binary signal into a quaternary symbol and outputs the quaternary symbol. A base band filter includes a root raised cosine filter and a sinc filter. The base band filter blocks... | 11/05/2009 |
| 20080267314 | Digital microwave radio system and method with encryption A communications system are provided that provides integrated encryption capabilities. In particular, a digital microwave system, terminal and method are provided in which the encryption functions are integrated into the digital microwave terminals. The digital microwav... | 10/30/2008 |
| 20070286305 | Transmitting apparatus of digital signals on a supply line of electronic devices and corresponding method A power converter having a noise component and a modulator configured to vary a frequency of the noise component of the power converter on the basis of a digital signal to be transmitted. ... | 12/13/2007 |
| 20070248180 | RECEIVER FOR OBJECT LOCATING AND TRACKING SYSTEMS AND RELATED METHODS A communications system, such as part of a real-time location system, includes a transmitter that can be part of a location processor, tag emission reader or tag interrogator that generates a frequency shift key (FSK) modulated wireless communication signal representati... | 10/25/2007 |
| 20070189411 | Audio encoding and transmission method A method of transmitting audio signals is disclosed. The method includes, receiving a multi-channel analog audio signal, converting the analog audio signal to a digital audio signal with a first sample bit length and a first sample rate, providing a header for each disc... | 08/16/2007 |
| 20070165741 | Method for Data Transmission Between Switch and Terminal, FSK Processing Module, Terminal, and Switch Embodiments of the present invention provide a method for data transmission between a switch and a terminal, which includes: transmitting data between the switch and the terminal in a bidirectional Frequency Shift Keying (FSK) mode. The embodiments of the present invent... | 07/19/2007 |
| 20070092022 | Integrated frequency shift-keying FSK transceiver An integrated frequency-shift keying (FSK) transceiver fabricated on an integrated circuit (IC) chip. The integrated FSK transceiver provides a bidirectional exchange of information between a satellite set-top box converter or modem and one or more outdoor units (ODUs).... | 04/26/2007 |
| 20060215782 | Methods and apparatus for asynchronous serial channel connections in communication systems An integrated circuit device for use in a node of a communication system is provided. The integrated circuit device includes a memory configured to store data written thereto by a receiver associated with the node in accordance with a receiver clock, and to read data th... | 09/28/2006 |
| 20060193375 | Transceiver for zigbee and bluetooth communications The invention provides a transceiver for Zigbee and Bluetooth communications integrating a Zigbee transceiver and a Bluetooth transceiver. The transceiver includes an RF processor 110, a variable bandpass filter 120, an FSK modulator/demodulator 130, | 08/31/2006 |
| 20060109929 | Methods and apparatus for interface buffer management and clock compensation in data transfers A circuit for data stream buffer management, lane alignment, and clock compensation of data transfers across a clock boundary using a single first in first out (FIFO) buffer in each serial channel is described. The RapidIO® data channel, for example, operates using a c... | 05/25/2006 |
| 20060029151 | Capacitive data link A capacitive data link includes a first capacitive element. A signal producing entity may be operatively coupled to the first capacitive element and configured to apply an information-carrying electrical signal to the first capacitive element. A second capacitive elemen... | 02/09/2006 |
| 20050249307 | Integrated burst FSK receiver An integrated burst FSK receiver is provided to receive and interpret an RF signal using FSK modulation. The integrated burst FSK receiver uses a programmable RF local oscillator to mix a received signal down to an IF range or baseband, where it is filtered and sampled ... | 11/10/2005 |
