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| Number | Title | Issue Date |
| 5781101 | Vehicular emergency message system activation diagnostics recorder A vehicle user can request emergency or roadside assistance from a response center by activating a button in the vehicle. The global positioning system is used to continuously store the vehicle location. A cellular telephone network is used to contact a r... | 07/14/1998 |
| 5752213 | Misfire detector with torsional oscillation filtering Irregularities in crankshaft velocity introduced when measuring crankshaft rotation at a section of a crankshaft in an internal combustion engine that is less damped to torsional oscillations than is another more accessible crankshaft section are correcte... | 05/12/1998 |
| 5742897 | Matching transformer for dual-band radio receiver A dual-band radio receiver utilizes a single transformer to provide impedance matching between signal mixers from separate signal paths to their respective intermediate frequency filters. Thus, a dual-band radio receiver can be made eliminating one transf... | 04/21/1998 |
| 5739486 | Push-button system for control panels A button system for the control panel of an automotive audio system is adapted to curved bezel shapes wherein push buttons are non-coplanar. Each button operates normal to the bezel surface at the button location. The button system interfaces with a flat ... | 04/14/1998 |
| 5710995 | Adaptive antenna receiver An FM radio receiver, particularly for mobile receivers, reduces the effects of multipath distortion. It selects either an adaptive process (constant modulus algorithm or CMA) or a antenna diversity process depending on the circumstances of the instantane... | 01/20/1998 |
| 5703413 | Method for operating a vehicle security system including code comparison after starting which counts start attempts A security system for an automotive vehicle having an engine is operatively connected between engine running electrical components that are connected to an electrical power source and a lock switch having at least two operative positions. The security sys... | 12/30/1997 |
| 5699253 | Nonlinear dynamic transform for correction of crankshaft acceleration having torsional oscillations Irregularities in crankshaft velocity introduced when measuring crankshaft rotation at a section of a crankshaft in an internal combustion engine that is less damped to torsional oscillations than is another more accessible crankshaft section are correcte... | 12/16/1997 |
| 5697091 | Distortion-free chopper-based signal mixer An AM-modulated carrier signal is converted to a lower carrier frequency through mixing with a square wave local oscillator signal. A field-effect transistor chops the modulated signal according to the square wave signal so that a chopped or sampled versi... | 12/09/1997 |
| 5686910 | Vehicular emergency message system with automatic periodic call-in A vehicle user can request emergency or roadside assistance from a response center by activating a button in the vehicle. The global positioning system is used to continuously store the vehicle location. A cellular telephone network is used to contact a r... | 11/11/1997 |
| 5687215 | Vehicular emergency message system A vehicle user can request emergency or roadside assistance from a response center by activating a button in the vehicle. The global positioning system is used to continuously store the vehicle location. A cellular telephone network is used to contact a r... | 11/11/1997 |
| 5655724 | Autoreverse cassette tape mechanism with tape-eating prevention A cassette tape transport mechanism is provided with a mechanism for quickly detecting the stoppage of a take-up reel, thereby causing a tape direction change cycle to be initiated before a significant amount of tape can form a jam during a tape eating co... | 08/12/1997 |
| 5650791 | Multiband antenna for automotive vehicle A multiband antenna for mounting on glass for an automotive vehicle window is disposed around the periphery of the window to provide a long length for the AM antenna. A series capacitor decouples one end of the AM monopole antenna from ground. The capacit... | 07/22/1997 |
| 5629712 | Vehicular slot antenna concealed in exterior trim accessory A vehicular radio reception antenna is concealed within a body trim piece such as a spoiler or a luggage rack. A supporting body panel is utilized as a ground plane and a conductive loop is concealed within the trim piece. A transmission line connects two... | 05/13/1997 |
| 5610328 | Misfire detector for 50% misfire rate A misfire detector for an internal combustion engine obtains a baseline crankshaft acceleration value that degrades at a 50% misfire rate in a predetermined way that is capable of subsequent correction. The width of a median averaging function is selected... | 03/11/1997 |
| 5608165 | Ultrasonic thickness gauge for multilayer plastic fuel tanks The thickness of a vapor barrier layer embedded in a co-extruded plastic fuel tank is measured using ultrasound. An interference method using ultrasonic tone-bursts employs a frequency progression wherein a frequency producing a minimum in the reflection ... | 03/04/1997 |
| 5608629 | Vehicle crash data generator Crash data from actual vehicle crashes is manipulated to produce new hybrid crash data which contains different acceleration peaks while retaining the overall characteristics of the original crash data. The new crash data is realistic and can be used to t... | 03/04/1997 |
| 5586879 | Fluorescent electroluminescent lamp A lamp panel provides a light source employing dual light producing mechanisms. Specifically, electroluminescence produces a source light which is passed through a translucent fluorescent filter that modifies the color spectrum to a desired color. The use... | 12/24/1996 |
| 5584052 | Integrated microphone/pushbutton housing for voice activated cellular phone A voice controlled vehicle accessory system is responsive to voice commands and/or manual commands wherein the manual commands are entered via a single pushbutton 16 having multiple functions depending upon the instantaneous state of a system controller 1... | 12/10/1996 |
| 5572204 | Vehicular emergency message system A vehicle user can request emergency or roadside assistance from a response center by activating a button in the vehicle. The global positioning system is used to continuously store the vehicle location. A cellular telephone network is used to contact a r... | 11/05/1996 |
| 5569997 | Power supply for volatile memory devices and portable electrical appliance in vehicles A nonswitched power circuit energizes volatile memories of electronic devices in an automobile. When the main vehicle battery is present and providing power, the volatile memories are energized by the main battery through a diode. The main battery also ma... | 10/29/1996 |
| 5568120 | Anti-theft system with remote controlled verification of arming A remote controlled anti-theft system for transportation vehicles allows the user to easily determine at will if a faulty door position sensor or an open door will inhibit proper operation of the anti-theft system by pressing the lock button on the remote... | 10/22/1996 |
| 5559285 | Fuzzy logic method for detecting misfiers in internal combustion engines Misfiring of individual cylinders in an internal combustion engine 70 is detected based on simultaneous use of two or more different methods of misfire detection which examine different combustion-related parameters of engine operation, such as crankshaft... | 09/24/1996 |
| 5555451 | High-quality reception indicating circuit for scanning AM recievers The reception quality of an AM broadcast signal is determined within a very short time of tuning to the channel frequency by modifying the intermediate frequency signal to remove the audio information modulated on the carrier but including residual noise ... | 09/10/1996 |
| 5532709 | Directional antenna for vehicle entry system The invention uses a modified Yagi-Uda antenna as a directional antenna for remote entry applications for transportation vehicles. To reduce the area that the antenna requires for packaging in a vehicle headliner, the antenna employs a shared reflector fo... | 07/02/1996 |
| 4667164 | Frequency response amplifier An operational amplifier or comparator is provided in which internal parasitic capacitances are buffered to increase the gain bandwidth product of the amplifier.... | 05/19/1987 |
| 4661764 | Efficiency switching voltage converter system Disclosed is an improved efficiency switching voltage converter system wherein the semiconductor switching device employed therein is provided with increased gate drive by selectively applying the most effective driving voltage available in the system.... | 04/28/1987 |
| 4658198 | Charging circuit for a reference capacitor A charging circuit is provided to decrease the settling time of a reference capacitor storing a reference voltage for data acquisition circuits. The charging circuit includes one or more comparator circuits for comparing the voltage across the reference c... | 04/14/1987 |
| 4656459 | Dual slope converter with large apparent integrator swing Conversion is achieved by subdividing the intergrate and deintegrate periods into a plurality of integrate and deintegrate phases. Power frequency rejection can be maintained by defining the combined integrate phases to integrate over at least one complet... | 04/07/1987 |
| 4652808 | Efficiency switching voltage converter system Disclosed is an improved efficiency switching voltage converter system wherein the semiconductor switching device employed therein is provided with increased gate drive by selectively applying the most effective driving voltage available in the system.... | 03/24/1987 |
| 4646331 | Electronic static switched-latch frequency divider circuit with odd number counting capability An electronic frequency divider circuit, particularly well-adapted to implement odd-number counters, comprising a multiplicity of switched-latch stages, and in the case of an odd-number counter, further including a bypass circuit stage. Each switched-latc... | 02/24/1987 |
| 4644353 | Programmable interface A programmable interface to selectively couple the terminals of an electronic system to desired circuit locations within the system. By applying programming signals to the input terminals of the interface in a prescribed sequence, the interface is program... | 02/17/1987 |
| 4641162 | Current limited insulated gate device A current limited insulated gate transistor (IGT) is disclosed wherein the individual cells are rectangular and each has four discrete, mutually spaced emitter regions to provide a reduced gate periphery. Each cell lacks emitter portions at the cell corne... | 02/03/1987 |
| 4641129 | Analog to digital converter with parallel and successive approximation stages An improved analog to digital converter in which an approximate digital representation is provided by a parallel analog to digital converter and the conversion is completed by a successive approximation analog to digital converter.... | 02/03/1987 |
| 4639715 | Flash analog to digital converter An improved analog to digital converter is provided in which high and low order bytes of the digital output can be sequentially generated by a single flash converter circuit. Upon the generation of the high order byte, a high byte equivalent voltage is su... | 01/27/1987 |
