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Match Document Document Title
8730022 Tire pressure monitoring communication method and system  
A communication method transmits a detection signal including a valve ID, which is a fixed data string, and detection information, which is a variable data string, performs error detection on the...
8670505 Early detection of segment type using BPSK and DBPSK modulated carriers in ISDB-T receivers  
A receiver system for early detection of a segment type of an input signal based on BPSK and DBPSK modulated carriers is provided. The receiver system includes a tuner that converts the input...
8451950 Method and apparatus adapted to demodulate a data signal  
The present invention relates to the field of receiving data and/or demodulating a data transmission signal. The present invention provides a method of and/or device for determining a data signal...
8283975 Data processing system  
A device (100) for processing an input signal (102), the device (100) comprising a delay unit (104) adapted for delaying the input signal (102) by a predefined delay time, at least one phase...
8063747 RFID tag, interrogator and system with improved symbol encoding and decoding  
An improved RFID Tag, Interrogator, and system wherein at least one tag modulates a radio frequency signal by modulated backscatter operations.
7978073 Transmitter and a method for transmitting data  
An excitation reference source (FC) is split through a 90 degree splitter. One output from the splitter is fed to the LO port of a mixer. Data is fed to the mixer's IF port and causes PRK...
7915997 System and method for remote activation with interleaved modulation protocol  
A system and method for remote activation of a device includes, in one embodiment, transmitting a command message according to a first modulation, and transmitting a signal representing the...
7898390 Phase shifters, interrogators, methods of shifting a phase angle of a signal, and methods of operating an interrogator  
An interrogator provides a phase shifter including a first power divider configured to receive a signal and provide plural quadrature components of the signal; plural mixers coupled with the first...
7860192 FSK demodulator, FM demodulator, and related method with a build-in band-pass filter  
A frequency shift keying (FSK) demodulator includes a band-pass filter, an auto-calibration loop, a phase comparator, and an analog-to-digital converter. The band-pass filter is used for shifting...
7825781 Tire pressure monitoring system  
A tire pressure monitoring system is capable of ensuring accuracy of the rate of transmission of data via wireless communications without an increase in the number of oscillators and an increase...
7460014 RFID system utilizing parametric reflective technology  
A system and method for encoding and decoding information by use of radio frequency antennas. The system includes one or more interrogator devices and RFID data tags. The RFID data tags include a...
7453350 Tire pressure monitoring system transmission protocol  
A system for monitoring conditions within a tire includes a sensor assemblies (14). The sensor assemblies (14) emit a transmission (26) containing information indicative of conditions within a...
7405663 System for detecting radio-frequency identification tags  
Techniques for detecting radio-frequency identification (RFID) tags are disclosed. For example, an exit control system is described that detects unauthorized removal of articles from a protected...
7271677 Inductive data and power link suitable for integration  
A system providing an inductive power and data link between an external transmitter and miniature internal receiver is presented. The system is suited to applications where the receiver must be of...
7263137 Multivalued FSK modulation system  
A multivalued FSK modulation system is provided in which when data to be transmitted is multivalued and transmitted/received, the detection level is different every symbol. When a two-valued...
7151436 Receiving/backscattering arrangement and method with two modulation modes for wireless data transmission as well as modulation arrangement therefor  
For transmitting data, a receiving/backscattering arrangement receives, modulates and reflects or backscatters electromagnetic waves emitted by a base station. The modulation corresponds to the...
7119661 Combined tire pressure monitoring and keyless entry receiver  
A system for monitoring conditions within a tire (12) including a sensor assembly (14) including a pressure sensor (36), an accelerometer (34), a temperature sensor (32), and a transmitter (40) to...
7095316 Tire pressure monitoring system transmission protocol  
A system for monitoring conditions within a tire includes a sensor assemblies (14). The sensor assemblies (14) emit a transmission (26) containing information indicative of conditions within a...
6967573 Transmitter and a method for transmitting data  
A transmitter or a method for transmitting data from a first antenna imposes a low level phase modulation, for example of less than 90°, on a carrier signal in accordance with a data signal to...
6946950 MOBILE BODY DISCRIMINATION APPARATUS FOR RAPIDLY ACQUIRING RESPECTIVE DATA SETS TRANSMITTED THROUGH MODULATION OF REFLECTED RADIO WAVES BY TRANSPONDERS WHICH ARE WITHIN A COMMUNICATION REGION OF AN INTERROGATOR APPARATUS  
In a mobile body discrimination apparatus having an interrogator apparatus and a plurality of transponders each capable of transmitting information to the interrogator apparatus by modulation of...
6778098 Method and electronic device for speech control  
Reliable and efficient activation and deactivation control of a number of electronic products (P1, P2, P3) is effected by activation of one of the products by emission of an activation command...
6611198 Electronic reader for reading a special characteristic of an object  
An object identification system and method detects the presence of a target object in a field of inspection and in one aspect of the invention, generates a first signal if the object is left in...
6515466 Phase comparator  
A phase comparator for calculating the phase difference between a test wave form and an output wave form in a disk drive includes a phase converter, a first multiplier, a first integrator, a...
6452490 Home/commercial security monitoring system  
A method and apparatus for communicating between Customer Premises Equipment, (CPE) alarm sensing devices, and alarm monitoring stations. The sensing devices communicate with an end office switch...
6411199 Radio frequency identification system  
A radio frequency identification system includes a transponder and a transponder reader. The transponder, responsive to an interrogation signal continuously transmitted by the transponder reader,...
6404338 Measuring and/or security system  
Measuring and/or control system (1) for detection of the distance of an object (2) or of a person from a predetermined reference point, with a first transmitting/receiving device (10) for...
6344797 Digital electronic locator  
A digital electronic locator which assists in locating the position and direction of an object/animal/person is described. Three configurations of the locator are presented; the first one is the...
6329808 Method and system for the detection, by inductive coupling, of a load modulation signal  
A system for the detection of a load modulation signal by inductive coupling includes an antenna circuit having a coil, a circuit for applying an excitation signal having a predetermined frequency...
6181238 Panic button alarm actuator  
An improved panic button apparatus suitable for use in various vehicle monitoring systems. The apparatus includes a portable transmitter in wireless communication with a receiver located on-board...
6100603 Anti-theft system for a motor vehicle  
Antennas of an anti-theft system are controlled with a pulse width modulated square-wave signal by a power control unit and a phase control unit. The control is such that a change in power causes...
6049294 Apparatus and method for adaptable receiving frequency selection in a remote control  
An adaptable receiving frequency selection apparatus for a remote controller, and a method therefor, the apparatus including a remote controller receiving module for receiving the remote control...
6016328 Method and apparatus for the synchronization of a signal receiving station  
In an FSK modulated signal receiving station a synchronization sub-system is arranged to sample the received signal and to select one sample per symbol within a detection window having a finite...
5874903 RF repeater for automatic meter reading system  
An automatic meter reading system utilizes repeater technology to access hard to read meters within a fixed network structure. The components of the radio system that are needed for two-way...
5832026 Method for correcting errors from a fading signal in a frequency hopped spread spectrum communcation system  
A selective call communication system (10) transmits a frequency hopped spread spectrum signal as a Reed Solomon code word modulated as a four-level frequency shift keying (4FSK) signal. A base...
5726644 Lighting control system with packet hopping communication  
Building lights are master controlled to reduce power consumption under building master control, or in response to electric utility commands to the building computer. Each lighting wall control...
5680115 Remote controlling method  
A remote controlling method including the steps of storing the remote controller code of respective television brands in a first memory of a transmission IC, checking the input of dual keys for...
5677681 Code transmission system and portable pager in radio paging system  
If a code is transmitted at a first transmission rate, a base station modulates the entirety of the code, namely a preamble, a synchronizing signal and a call-data, by two values and transmits...
5661734 Trellis coded FM digital communications system and method  
A method and apparatus for encoding and convolutionally decoding a data word of a data word sequence. Each data word has k bits. An encoder selects, using a trellis encoding algorithm and a...
5635915 Transmission system  
A product pricing system for supermarket shelf labels (14) contains an electronic data transmission system which transmits pricing information to electronic shelf labels (14) by modulating a data...
5602664 Infrared repeater  
An IR repeater is disclosed which is resistant to CFL interference. The IR repeater includes a receiver section for receiving an IR light signal representing a coded signal modulated by a...
5515036 Passive keyless entry system  
A passive keyless entry system that is specifically adapted for use with automotive vehicles is designed to automatically unlock the vehicle as the operator approaches the vehicle. The system is...
5202678 Recognition unit  
An electronic recognition unit indicates that a flow of received information is starting when a desired bi-phased pulsed ratio signal starts to be received. The recognition unit discriminates...
5194978 Timer system for learning and replaying of infrared signals  
A remote controller capable of learning and later transmitting infrared signals transmitted by any other remote controller. The remote controller determines which of four modes of transmission a...
5194858 Lighting control system with set/reset ground remote  
A lighting load can be turned on/off manually from one or more remote switching stations as well as from a master switch controller station, with ON/OFF control signals produced at the remote...
5173927 Frequency detector system on a digital phase locked loop  
A frequency detection system is based on a digital phase locked loop, the detection system being especially suitable for use in noisy environments like supervisory audio tone (SAT) detection in...
5140316 Control apparatus for powered vehicle door systems  
Control systems including control circuitry and optional communications systems for operating a slding power-operated member of an automotive vehicle. A powered sliding door in an automotive...
5095309 Method and apparatus for modulating and detecting a subcarrier signal for an inductively coupled transponder  
A transponder system including a transponder and an interrogator having a transmission coil for producing a high-intensity electromagnetic field for inductively powering the transponder and two...
5089822 Interrogation signal processor for air traffic control communications  
The present invention is directed to a Mode S uplink or interrogation signal demodulation system which can quickly recognize the Mode S signal and also filter out of noise present in the Mode S...
5056235 Signal transmission system for machine tools, inspection machines, and the like  
Probes (18A, 18B, 18C) can be interchangeably mounted in the spindle (12) of a machine tool. Each probe has an optical signal transmission system, in which an optical signal from a light emitting...
5055835 Track to train communication systems  
A transponder circuit comprises a loop (4) for inductively coupling with an interrogator (2) to transmit a binary coded message to the interrogator (2); the loop (4) forms part of a tuned circuit...

Matches 1 - 50 out of 192 1 2 3 4 >