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| Number | Title | Issue Date |
| 7755507 | Distributed control system and control device thereof A control device that is used in a distributed control system and controlling a control target while serially transmitting data to a reception side control device by a pulse train signal, wherein when the control target is normal, state quantity data representing th... | 07/13/2010 |
| 7209852 | Circuit for producing a variable frequency clock signal having a high frequency low jitter pulse component Embodiments of the present invention include first and second pulse trains input to a switch in synchronization. The first and second pulse trains may have a repeating high and low values at first and second frequencies, respectively, and the first pulse train may t... | 04/24/2007 |
| 7161476 | Electronic tire management system An electronic tire maintenance system is provided for measuring a parameter of a device at a first location. The system includes a sensor for measuring the device parameter and generating a data signal representing the measured parameter. The system also includes a ... | 01/09/2007 |
| 7104123 | Method and apparatus for detecting wheel motion in a tire pressure monitoring system An apparatus for detecting motion of a wheel comprising tyre. The apparatus comprises a pressure sensor for measuring the tyre pressure and generating a signal corresponding to the measured tyre pressure, and means for detecting a component of said signal that corre... | 09/12/2006 |
| 6963290 | Data recovery for pulse telemetry using pulse position modulation The specification discloses algorithms for error recovery in pulse position modulation-based mud pulse telemetry. More particularly, the specification discloses detection and attempted correction of at least five possible error mechanisms: the missed detection of a ... | 11/08/2005 |
| 6653968 | System for generating a signal to superimpose information A system for generating a signal which, in addition to first information representing the rotational speed of a rotating part, contains at least second information. The signal changes over time between a first and a second current level and/or voltage lev... | 11/25/2003 |
| 6531873 | Methods for discriminating between types of electric appliances connectable to a supplementary device A supplementary device, such as a charging, cleaning and/or diagnosis device, for a small electric device, such as an electric hair cutting or hair removal apparatus or an electric toothbrush, but particularly for an electric shaving apparatus, includes a... | 03/11/2003 |
| 6480138 | Method of transmitting data within pulse intervals of a rotational speed signal, and circuit arrangement for implementing the method The present invention relates to a method of transmitting data in pulse intervals of a rotational speed signal, wherein the maximum number of the transmittable data is determined from the period of time which is required for transmitting an information an... | 11/12/2002 |
| 6073050 | Efficient integrated RF telemetry transmitter for use with implantable device An efficient RF telemetry transmitter system includes a first stage and a second stage. The transmitter system sends power and data to an implant device using pulse-width modulation of a high fixed frequency clock signal, e.g., a 49 MHz clock signal, with... | 06/06/2000 |
| 5631652 | Remote control method and system using one remote controller to control more than one apparatus A remote control method and apparatus for controlling more than one apparatus using one remote control. The method includes the steps of: (a) storing a menu for controlling the plurality of AV apparatuses, the menu being categorized into a main menu level... | 05/20/1997 |
| 5623515 | Data communication system for reducing a risk of transmission errors A data communication system comprises a main device with a first microcomputer and an operating device with a second microcomputer. The devices are connected to each other by a first wire and by a second wire. In addition to that, input interrupt terminal... | 04/22/1997 |
| 5361048 | Pulse width modulator having a duty cycle proportional to the amplitude of an input signal from a differential transducer amplifier A pulse width modulator generates a linear sawtooth ramp waveform from a pulse signal to compare against an amplified input signal derived from a transducer output voltage signal. A first circuit generates the linear ramp waveform in response to the pulse... | 11/01/1994 |
| 5355130 | Ultrasonic proximity switch with a synchronizing device When operating adjacent ultrasonic proximity switches, faulty output states can occur due to mutual interference (e.g., the incorrect allocation of echo signals). To solve this problem, it is known to adhere to standard mounting specifications as well as ... | 10/11/1994 |
| 5223887 | Autofocus camera An apparatus for monitoring the operation of a measuring unit for obtaining information related to a predetermined parameter. The measuring unit provides an indication of said information having been measured, which can take the form of an indicator lamp,... | 06/29/1993 |
| 5218343 | Portable field-programmable detection microchip A read/write device includes a transmitter for producing an RF signal and a modulator coupled to said transmitter for modulating the RF signal and, finally a data receiver for receiving RF data signals from a portable microchip. The microchip includes a r... | 06/08/1993 |
| 5202682 | Data encodement and reading method and apparatus A method and apparatus for measuring operations data which uses a commercially available digital multimeter (DMM) as the data receiving and display device. In one preferred embodiment, for example, basic operations data is transduced to digital form and t... | 04/13/1993 |
| 5140611 | Pulse width modulated self-clocking and self-synchronizing data transmission and method for a telephonic communication network switching system Transmissions of synchronous digital data from a master control unit (50A) to a slave, network termination unit (50B) are via a pulse width modulated data stream including pulse width modulated binary code pulses (20, 22) with a pulse width modulated sync... | 08/18/1992 |
| 5128792 | Self-synchronizing infra-red communication system A self-synchronizing infra-red communication system. The coding scheme involves transmitting a series of pulses, the separations between successive pulses representing the same data. Even though the separations between successive pulses all represent the ... | 07/07/1992 |
| 5053766 | Telemetering system for electrical power consumed by various users The telemetering system for electrical power consumed by various users converts the units of electrical consumption for each user into signals which may be transmitted and may be read by the corresponding microprocessors, those of a group of users being s... | 10/01/1991 |
| 4935738 | Process for transmitting signals between two elements and device for carrying out said process A method and apparatus are provided wherein there is associated with each value of a measurement of a parameter such as pressure, for transmission through an electromagnetic coupling device, a time duration or period which is a function of the measured va... | 06/19/1990 |
| 4866436 | Device for transmitting measurement values of a sensor During the transmission of measurement values of a sensor from a transmitter circuit to a receiver circuit, for example via an optical fibre, use has been made of a device which must be activated by the receiver circuit before a measurement value can be t... | 09/12/1989 |
| 4748446 | Position coded pulse train Pulse position coding is used to transmit several channels of data from a ground radar transmitter to a receiver in an airborne, remotely-piloted vehicle. The system is designed to ignore interfering pulses, especially those which are synchronized with th... | 05/31/1988 |
| 4743901 | Signal transmission system A signal transmission system has a plurality of sensors, a plurality of modulation circuits connected to the sensors, a single demodulation circuit and a single power supply line for connecting the modulation circuits to the demodulation circuit. Each of ... | 05/10/1988 |
| 4670739 | Communication system especially useful as an incident location reporting security system The Incident Location Reporting Security System pertains to a device that is capable of determining instantaneously, via the use of pulse-width coded modulation, the location of incidences such as burglary, robbery and fire. Detailed multi-point monitorin... | 06/02/1987 |
| 4668950 | Encoding apparatus and method for a position coded pulse communication system Pulse position coding is used to transmit several channels of data from a ground radar transmitter to a receiver in an airborne, remotely-piloted vehicle. The system is designed to ignore interfering pulses, especially those which are synchronized with th... | 05/26/1987 |
| 4651151 | Single-channel measuring head for remote metering apparatus The single channel measuring head has a sensor whose output signal is amplified and filtered. A converter provides sequencies of 3 pulses representing a low reference, the measured parameter and a high reference. The time-period between the first two puls... | 03/17/1987 |
| 4649386 | Data acquisition In a system in which a continuous, periodically repeated, pulse duration type signal is utilized to transmit information to a computer, the pulse duration type signal is converted into a series of clock pulses. The clock pulses are then counted for a peri... | 03/10/1987 |
| 4628314 | Method and apparatus for detecting position and velocity of moving body A method for detecting the position and the velocity by using an encoder mounted directly on a moving body wherein original signals of the encoder are pulse-width modulated by using a sampling carrier wave and the position is detected by measuring the wid... | 12/09/1986 |
| 4628312 | Decoding apparatus and method for a position coded pulse communication system Pulse position coding is used to transmit several channels of data from a ground radar transmitter to a receiver in an airborne, remotely-piloted vehicle. The system is designed to ignore interfering pulses, especially those which are synchronized with th... | 12/09/1986 |
| 4618853 | Fire detector A fire detector which outputs a change in physical phenomena caused by fire, such as a change in smoke density, in the form of analog voltage signal, by, for example, a photoelectric type sensor, an ionization type sensor, a thermal sensor, a gas sensor o... | 10/21/1986 |
| 4616223 | System of identifying local stations by a central interrogating station A station identification system comprising a central interrogating station (10) and M local stations (100, 200), etc. arranged in parallel with each other along a transmission bus (20) which connects them to said central station. Each local station is ada... | 10/07/1986 |
| 4558316 | Electrical supervisory control and data acquisition system An electrical control system which comprises: a master station (2) and a plurality of receiver stations (4) connected thereto by a bus, (6), the master station including generating means (20, 22) for generating control signals (18) which are applied to sa... | 12/10/1985 |
| 4471354 | Apparatus and method for remotely measuring temperature Apparatus and method for remotely measuring temperature in which a transmitter having a temperature sensitive element is placed in close proximity with the environment sought to the measured, with the temperature sensitive element controlling a reference ... | 09/11/1984 |
| 4430652 | Remote control system A remote control system capable of utilizing manually encoded signals is disclosed. The system is particularly suitable for use in the logging industry because it is capable of utilizing standardized whistle signals for both remove control and audible sig... | 02/07/1984 |
| 4408204 | Digital counter/transmitter with remote receiver/display A digital counter receives pulses from a transducer monitoring gasoline pumped, articles moving along an assembly line, count processes in batch controlled systems, or the like. The counter stores four decades of BCD encoded data. The counter is continuou... | 10/04/1983 |
| 4346380 | Simultaneous communication of analog and binary information in a single frame of a pulse count modulated digital signal A communication system for providing both analog information pulses and digital information pulses in a single frame of a pulse train, including circuitry for sequentially multiplexing and modulating a first given number "m" of analog information input ch... | 08/24/1982 |
| 4336483 | Capacitive position sensor Apparatus for positioning a projected image in response to input signals corresponding to the components of the commanded position of the image along a pair of orthogonal axes. The apparatus employs a pair of servo loops that position a projector mechanis... | 06/22/1982 |
| 4321933 | Telemetry system for monitoring hospital patient temperature Hospital patient temperatures are monitored by providing each patient with a battery powered transmitter containing a thermistor and reference resistor which is positioned over the patient's carotid artery. A receiver, carried by a nurse, includes an actu... | 03/30/1982 |
| 4321580 | Process and apparatus for adjustment of the angular position of a part in rotational motion A method and apparatus for determining the angular position of a point in rotational motion which includes a disk coupled to rotate with the rotating part. The disk includes a plurality of alternating teeth and spaces located about its periphery. At least... | 03/23/1982 |
| 4309702 | Displacement detecting apparatus Apparatus for detecting the displacement of a member having a magnetic scale on which are provided calibrating signals of a predetermined wavelength. First and second magnetic heads are disposed to reproduce the calibrating signals from the magnetic scale... | 01/05/1982 |
