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| Number | Title | Issue Date |
| 8014677 | Optical activation of one or more communication units in a survey system To control activation of one or more communication units in a survey system that performs surveying of a subterranean structure, optical activity on at least one optical link connected to at least one communication unit that is part of a survey system is detected. I... | 09/06/2011 |
| 7616895 | Safety edge with status and failure recognition A device and method for operating an optoelectronic safety sensitive edge (100) for the safeguarded motor-driven movement of a gate having a closing edge (141). The device has a deformable, hollow, elastic profile (110), a light transmitter devi... | 11/10/2009 |
| 7542680 | Laser control system A control system is used for remotely operating an apparatus powered by a main power source. The control system includes an auxiliary power source to provide power to the apparatus upon a loss of power to the main power source, and first and second light-emitting so... | 06/02/2009 |
| 7263288 | Optical routing using a star switching fabric In one embodiment, a router includes a plurality of line cards each operable to receive at least one packet comprising an identifier associated with a destination element external to the router. Each line card includes a look-up table operable to facilitate routing ... | 08/28/2007 |
| 7248006 | Electronically controlled electric motor A system for controlling an electric motor comprises, in one embodiment, an encoder; a central processor in communication with said encoder; a module processor in communication with said central processor; feedback circuitry in communication with said module process... | 07/24/2007 |
| 7244944 | Triggering system and method Described is a triggering arrangement including a power supply, a lighting arrangement and a switch. The lighting arrangement is coupled to the power supply. The switch is coupled to the lighting arrangement and the power supply. When the switch is in a first positi... | 07/17/2007 |
| 7239810 | System for controlling an electrical device A system for controlling an electrical device that includes an enclosure and an optical signal. ... | 07/03/2007 |
| 7227386 | Phase locked loop lock-detection circuit An improved clock lock detection circuit is disclosed. The circuit has a first input indicating an edge of a first clock and a second input indicating a corresponding edge of a second clock wherein the second clock is expected to be synchronized with the first clock... | 06/05/2007 |
| 7209657 | Optical routing using a star switching fabric In one embodiment, a router includes a plurality of line cards each operable to receive at least one packet comprising an identifier associated with a destination element external to the router. Each line card includes a look-up table operable to facilitate routing ... | 04/24/2007 |
| 7174074 | Conduit insert for optical fiber cable A flexible innerduct structure is configured to contain a cable within a conduit. The innerduct structure includes a pair of adjacent strip-shaped layers of flexible material that are joined along their longitudinal edges to define a channel through which the cable ... | 02/06/2007 |
| 7171116 | Provisionable keep-alive signal for physical-layer protection of an optical network A dual-output Mach-Zehnder modulator (MZM2) and configurations of optical transmitters based on the MZM2 which obviate the optical splitter that is typically used to provide keep-alive functionality in redundantly-connected, protected optical networks, SONET add-dro... | 01/30/2007 |
| 7130581 | Wireless data communication device and communication system including such a device The wireless data communication device (1) is mounted in a portable object, such as a wristwatch. The device includes an oscillator circuit (6), which produces high frequency signals (SH), and a signal processing unit (7), connected t... | 10/31/2006 |
| 7027736 | Addressable system for light fixture modules An addressable system for light fixtures is described wherein a plurality of light fixture modules is individually or collectively addressable for programming by remote control. The remote control may individually select each of the track control modules through vis... | 04/11/2006 |
| 7024119 | Addressable light fixture module An addressable light fixture is described wherein a light fixture module is individually addressable for programming by remote control. The remote control may individually select each light fixture module through visible and narrowly defined selected light followed ... | 04/04/2006 |
| 6883030 | Data visualization with independent data-utilization and data-supplying components The embodiment of a respective application-specific call code, necessary in the existing art, as an external control element implemented in a separate component is described. The external control element is usable in any desired containers without thereby modifying ... | 04/19/2005 |
| 6512366 | Rotary position transmitter for registering a rotary position A rotary position of a rotary element is registered by a sensor arrangement having at least two sensors and an evaluation circuit disposed downstream thereof. In each position of the rotary element, the sensors are capable of supply raw signals by which i... | 01/28/2003 |
| 6501996 | Process automation system A process automation system includes terminals for operating and monitoring purposes, automation devices for executing control functions, and a host computer. Communication between the terminals and the automation devices is exclusively established via th... | 12/31/2002 |
| 6426820 | Remote control incorporating self-test capability A remote control is provided for controlling various electronic apparatus such as televisions, videocassette recorders, stereo systems, cable boxes, and the like. The remote control includes a loop-back, self-test capability, which indicates the operabili... | 07/30/2002 |
| 6400482 | Communication system A communications network comprised of a source of information to be transmitted in the form of a signal, one or more transmitters which emit light suitable for illumination and including means for modulating the light with the information signal, a medium... | 06/04/2002 |
| 6384946 | Electrical isolation between IR receiver and further electronic circuits An electronic system including a connector for an external device such as an infrared receiver includes a signal processor, responsive to the infrared receiver and an electrical isolation device such as an optocoupler, coupled between the connector and th... | 05/07/2002 |
| 6175308 | Personal duress security system A security system including tracking units or readers carried or mounted on mobile units to operatively communicate status signals indicating identity, location, direction of travel, and a number of alarm conditions to a local monitoring station. The trac... | 01/16/2001 |
| 6128116 | Retroreflective elevator hoistway position sensor Retroreflective tape 28, 29 disposed on select positions on an elevator guide rail 13 is sensed by infrared transceivers 24, 25 disposed on an elevator car 10 to provide a signal indicative of the elevator as being at a vertical position in a hoistway des... | 10/03/2000 |
| 6014076 | Apparatus and method for achieving intrinsic safety using conventional sensors An apparatus and method for monitoring parameters of combustible liquids within a tank includes a plurality of sensors disposable within the tank for generating signals indicative of parameters of the contents of the tank, a display disposed on the outsid... | 01/11/2000 |
| 5923448 | Input/output unit When a selection signal of a low signal is applied to a first port, a second port becomes either a low or a high signal in accordance with an input signal being a low or a high signal at a third port and the third port can be used as an input port. Furthe... | 07/13/1999 |
| 5670942 | Illumination and communication device A transparent and impervious sphere containing encapsulated within the elronics and power source for providing non-visible infrared illumination and communication in various military and non-military applications and denied-access environments. The illum... | 09/23/1997 |
| 5602670 | Optical data receiver employing a solar cell resonant circuit and method for remote optical data communication A receiver circuit and method for receiving a signal having a given carrier frequency. The circuit comprises: (1) a solar cell receiver having a selected capacitance and (2) an inductive device having a selected inductance and coupled to the solar cell re... | 02/11/1997 |
| 5470541 | Apparatus and process for the preparation of hydrogen cyanide An apparatus and process for production of HCN from ammonia and a hydrocarbon gas by the use of microwave energy using a single mode microwave reactor.... | 11/28/1995 |
| 5428470 | Modular system and method for an automatic analyzer An automated analytical system module design essentially electrically isolates modular elements within the analyzer system with inter-module communications provided via packet-based communications. The modules may include a motor controller which estimate... | 06/27/1995 |
| 5409074 | Motorized vehicle with fiber-optic joystick controller A motorized vehicle, particularly a wheelchair, having a joystick controller for controlling energization of driving motors which in turn drive vehicle wheels and control steering of the vehicle. The joystick controller includes fiber-optic arrangements w... | 04/25/1995 |
| 5402257 | Method and apparatus for the wireless control of lift devices by infrared transmission In this method and apparatus for the wireless control of a lift device and, in particular, of a traveling crane, a plurality of transmitting units communicate by infrared transmission of data telegrams to a receiving unit associated with the crane. The da... | 03/28/1995 |
| 5371496 | Two-part sensor with transformer power coupling and optical signal coupling A two-part sensor includes a power source/signal receiver and a signal generator which are physically spaced and disconnected from one another. The power source/signal receiver is encased within transparent encapsulating material and includes an annular s... | 12/06/1994 |
| 5200827 | Head mounted video display and remote camera system A video system is disclosed having a weapon-mounted video camera (12) transmitting video signals to a remotely located video display (14). The video display is mounted to the helmet (40) of a soldier (36), and includes a sight reticle (50) superimposed on... | 04/06/1993 |
| 5119069 | Apparatus and method for locating boundaries of detection zones covered by a passive infrared detection system An audio indicator apparatus for locating boundaries of optically divided detection zones covered by a passive infrared detection system having a collector for collecting infrared rays from the zones of an area to be monitored, and a detector for passivel... | 06/02/1992 |
| 5079640 | Motion tracking device for a moving object such as a mechanical miner A signal transmitting installation that is mounted on a moving object comprises a central surface and at least one outer surface. Transmitting elements are distributed over each surface with more being arranged on the outer surface so as to create a highe... | 01/07/1992 |
| 4988973 | Steering wheel The present invention relates to steering wheels of automobiles provided with communication systems employing light transmitters, comprising a steering shaft, a boss plate fixed on the tip of the steering shaft, a ring portion mounted to said boss plate, ... | 01/29/1991 |
| 4921468 | Space transmission optical communication system An optical communication system suited for transmitting optical signals to a moving station located on a vehicle comprises a transmitting station to send out coded optical pulse signals through space and a receiving station to receive the pulse signals. T... | 05/01/1990 |
| 4905309 | Optical remote control system An emission device includes a first electro optical converter for converting electrical energy from a supply source into optical energy. A second electrical converter is provided to convert the electrical energy into digital information which is converted... | 02/27/1990 |
| 4899044 | Optically coupled remote sensor apparatus and system An optically coupled remote sensor apparatus comprises a tuned circuit incorporating a sensor and a light emitting diode (LED) connected in parallel with the tuned circuit. The natural resonant frequency of the tuned circuit is determined by the sensor wh... | 02/06/1990 |
| 4897884 | Apparatus for non-invasive calibration of a fluid sensor The present invention pertains to an apparatus for non-invasive calibration of a fluid sensor. The invention includes an electromagnetic signal transmitter and an electromagnetic signal receiver situated remotely from the transmitter. Also, there is a det... | 01/30/1990 |
| 4888709 | Electronic product information display system An electronic product information display system includes a plurality of self-contained display modules (10) mounted proximate to respective products. A signal (22) is formed that comprises an address part and a data part, the address part corresponding t... | 12/19/1989 |
