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EP1491076B1 |
INTERFACE FOR DIGITAL COMMUNICATION
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7106174 |
Anti-collision tag apparatus and system
This invention relates to radio frequency identification (RFID) apparatus comprising a reader/writer and transponders (tags) such that 2 or more transponders are capable of operating simultaneously...
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EP1582771A2 |
Fluid transmission apparatus with a lockup clutch
Abstract not available
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EP1257058A2 |
Device and method for determining the present logic level of a digital signal
The arrangement has a comparator (K1) that compares the digital signal (DS) with a threshold value (SS) between the states representing the higher and lower levels of the digital signal and a...
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EP0980482B1 |
HYDROKINETIC COUPLING APPARATUS IN PARTICULAR FOR MOTOR VEHICLE
Abstract not available for EP0980482 Abstract of corresponding document: FR2775747 The invention concerns a hydrokinetic coupling apparatus (12) comprising a locking engagement intervening between...
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6280333 |
Hydrokinetic coupling apparatus with locking clutch for motor vehicle
The invention concerns a piston (20) mounted axially movable along a guide bearing (59) pertaining to a hub (5) rim (52); a ring (21) being inserted between the hub (5) and a transverse wall, the...
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6211712 |
CMOS comparator with hysteresis
A comparator with hysteresis having a simplified architecture such that the amount of hysteresis can be readily adjusted. In one aspect, a comparator with hysteresis comprises a first switch for...
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EP0770797B1 |
Hydraulic power transmission
Abstract of EP0770797 A hydraulic power transmission comprising: a casing connected to an engine; a pump arranged in said casing and connected to said casing; and a turbine connected to an output...
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6016894 |
Hydrodynamic coupling device with a lockup clutch
A hydrodynamic coupling device includes an impeller wheel with an impeller shell and a vane arrangement and a turbine wheel with a turbine shell and vane arrangement. The vane arrangements of the...
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5955921 |
Signal amplifier circuit
The present invention discloses a signal amplifier circuit used in, for example, a receive portion in an optical communication system, and including an automatic threshold value setting portion to...
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5864762 |
Operating a trunked communication system in transmission and message trunked modes
A digitally trunked radio repeater system provides substantial improvements in timeliness and reliability. The mobile radio transceivers transmit channel requests on the control channel at 9600...
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5762172 |
Hydraulic power transmission unit
A hydraulic power transmission unit includes a casing connected to an engine, a pump member fixed to the interior of the casing and a turbine mounted within the casing and connected to an output...
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EP0772300A2 |
Method for converting IN/OUT analog signals, in particular having different relative amplitudes to corresponding IN/OUT digital signals
Abstract not available for EP0772300 Abstract of corresponding document: DE19540835 The method involves using a comparator associated with a first reference threshold value for the ON analogue...
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EP0770797A1 |
Hydraulic power transmission
A hydraulic power transmission comprising: a casing connected to an engine; a pump arranged in said casing and connected to said casing; and a turbine connected to an output shaft, whereby the...
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5574788 |
Trunked radio repeater system
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses...
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5446463 |
Device with high linearity for limitation of a characteristic of a signal, and use of the device in a radar reception system
Disclosed is device with high linearity for limitation of a characteristic of a signal to a maximum value S max , and notably the amplitude of a radar signal in a reception system with high...
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5408680 |
Single channel autonomous digitally trunked RF communications system
A single channel autonomous trunking ("SCAT") RF repeater transmits and receives on a single duplex RF channel. The repeater operates alternately in a control channel mode and in an assigned...
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5369783 |
Dynamic regrouping in a trunked radio communications systems
In a trunked radio frequency communications system, a dynamic regrouping scheme includes an effective user interface, automatic support of multi-site systems, the capability to program individual...
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5345165 |
Frequency-stabilized two-state modulation using hysteresis control
A two-state modulation system includes a hysteretic comparator with variable thresholds, a two-state processor and an integrating element. A summing circuit combines a signal coupled from the...
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5274838 |
Fail-soft architecture for public trunking system
A site architecture for a trunked radio frequency communications system provides better fault tolerance capabilities than are available from architectures including redundant hardware. During...
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5265093 |
Hardware interface and protocol for a mobile radio transceiver
A system and method for communicating control signals between a digital mobile transceiver, a digital control head, and a mobile data terminal over a common serial peripheral bus uses a message...
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5206863 |
Processor-to-processor communications protocol for a public service trunking system
A downlink between a communications dispatch console and a digitally trunked radio repeater system site controller efficiently transfers message data between the site controller and the console...
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5175866 |
Fail-soft architecture for public trunking system
A site architecture for a trunked radio frequency communications system provides better fault tolerance capabilities than are available from architectures including redundant hardware. During...
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5128930 |
Processor-to-processor communications protocol for a public service trunking system
A downlink between a communications dispatch console and a digitally trunked radio repeater system site controller efficiently transfers message data between the site controller and the console...
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5125102 |
Trunked radio repeater system including synchronization of a control channel and working channels
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses...
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5117501 |
Dynamic regrouping in a trunked radio communications system
In a trunked radio frequency communications system, a dynamic regrouping scheme includes an effective user interface, automatic support of multi-site systems, the capability to program individual...
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5109543 |
Hardware interface and protocol for a mobile radio transceiver
A system and method for communicating control signals between a digital mobile transceiver, a digital control head, and a mobile data terminal over a common serial peripheral bus uses a message...
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5086506 |
Radio trunking fault detection system with power output monitoring and on-air monitoring
A trunked radio frequency (RF) repeater system for public service trunking (PST) or the like includes a fault detection system having an RF output power monitoring, over-the-air RF monitoring and...
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5077828 |
RF channel expansion in a trunked radio communications system
In a trunked radio frequency communications system, an arrangement dynamically "expands" or extends the frequency allocation table stored within the "personality" defining non-volatile storage...
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4939746 |
Trunked radio repeater system
A digital trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses a...
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4926496 |
Method and apparatus for infrequent radio users to simply obtain emergency assistance
A digital mobile radio transceiver allows even the most unsophisticated user to simply and easily obtain emergency communications. The transceiver is programmed with "personality" data specifying...
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4914398 |
Method and circuitry to suppress additive disturbances in data channels containing MR sensors
A method and circuitry are disclosed for suppressing additive transient disturbances in a data channel; e.g., due to thermal transients caused by an MR transducer contacting moving a storage...
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4905302 |
Trunked radio repeater system
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses...
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4905234 |
Apparatus and method for transmitting digital data over a radio communications channel
A digital radio RF signalling protocol communicates either digitized voice or digital data signals and indicates the type of information being communicated to the receiver. Multiple repeats of...
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4903262 |
Hardware interface and protocol for a mobile radio transceiver
A system and method for communicating control signals between a digital mobile transceiver, a digital control head, and a mobile data terminal over a common serial peripheral bus uses a message...
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4835731 |
Processor-to-processor communications protocol for a public service trunking system
A downlink between a communications dispatch console and a digitally trunked radio repeater system site controller efficiently transfers message data between the site controller and the console...
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4821292 |
Adaptive limiter/detector which changes time constant upon detection of dotting pattern
A limiter/detector which takes advantage of the characteristics of the dotting pattern preceding each message in the General Electric Public Service Trunking System shortens bit synchronization...
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4736391 |
Threshold control with data receiver
A binary data receiver data modulated light signals and applies them to a photodetector for producing electrical data signals which are amplified and applied to a data decision circuit. The data...
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