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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 8074631 | Circuit configuration for switching current flow through an ignition coil A circuit configuration for switching current flow through an ignition coil, in which the switching process is able to be executed by at least one first transistor that is controllable by a control signal which is able to be supplied via a control signal input of th... | 12/13/2011 |
| 8006678 | Igniter system A coil failure detection circuit detects a rise of a collector current of an IGBT and a timer circuit measures the length of a rise period. If the rise is not a normal one, an electronic control unit judges that a coil failure has occurred. The electronic control un... | 08/30/2011 |
| 7686000 | Controller and method for controlling an ignition coil A controller for an ignition coil, the controller comprising means for determining a rate of change of current flow through a primary winding of the ignition coil; and means for switching off current flow through the primary winding of the ignition coil as a functio... | 03/30/2010 |
| 7581534 | Internal combustion engine ignition device An internal combustion engine ignition device is provided in which an ECU (200) includes a pulse generation circuit (201) that outputs pulse signals (Igt1 and Igt2) and an ion-signal detection/control circuit (300), and a coil driv... | 09/01/2009 |
| 7404396 | Multiple discharge ignition control apparatus and method for internal combustion engines In a multiple discharge ignition control apparatus, a battery, an energy storage coil and a first IGBT are connected in series. Further, the energy storage coil, a diode, a primary coil and a second IGBT are connected in series. The energy storage coil is connected ... | 07/29/2008 |
| 7348782 | Ignition device and spark condition detection method When a spark discharge is produced, a first current flows in one direction. From a rise of an ignition signal to energize an ignition coil to a fall of the ignition signal to deenergize the ignition coil, in order that a second current flowing in the opposite direct... | 03/25/2008 |
| 7324320 | Device and a method for magnetizing a magnet system A device for magnetizing a magnet system preferably having several pulse-generator circuits which are mutually arranged so that their magnetic fields superimpose in a cumulative manner. Each pulse-generator circuit includes a capacitor element, a magnetization coil ... | 01/29/2008 |
| 7293554 | Ignition coil driver device with slew-rate limited dwell turn-on A device to control the charging rate of an ignition coil for an internal combustion spark ignition engine. The device controls the turn-on rate of the primary coil by slew-rate limiting using switching devices and a Miller-effect capacitor in order to reduce second... | 11/13/2007 |
| 7259470 | Power control device for vehicle In a power control device for a vehicle, a monitoring control device 2 disposed separately from a power converter 1 judges normality/abnormality of the power converter 1, and sets an abnormality-occurrence electric generation switching signal | 08/21/2007 |
| 7251571 | Methods of diagnosing open-secondary winding of an ignition coil using the ionization current signal In a first embodiment, the present invention is a method of detecting an open secondary winding, including the steps of enabling an integrator, resetting the integrator, detecting an ionization current, integrating the ionization current over a spark window, compari... | 07/31/2007 |
| 7245163 | Overcurrent limiting controller A semiconductor device controller includes a current supply control unit for controlling a conduction state of a semiconductor device connected to a load in response to a control signal to supply current to the load, a current level judging unit for comparing one or... | 07/17/2007 |
| 7207325 | Engine ignition system having noise protection circuit An ignition system for an internal combustion engine includes a switch circuit connected to an ignition coil to switch on or off current supplied to the ignition coil, a control circuit for providing a control signal for controlling the switch circuit based on the i... | 04/24/2007 |
| 7176744 | Semiconductor device A gate discharge resistor part is connected to the gate of an IGBT (Insulated Gate Bipolar Transistor). A timer circuit has its output connected to the input of the gate discharge resistor part and the input of a gate driving circuit. When an ON signal for driving t... | 02/13/2007 |
| 7159583 | Technique for drive current stabilization of an automotive ignition system Drive current stabilization is achieved through the management of a drive current. The drive current may include a control current that is provided to a control terminal of a switch, a current limit input current that is provided to a current limit circuit associate... | 01/09/2007 |
| 7158361 | Method and apparatus for regulating a current through an inductive load The invention relates to a method and an apparatus for regulating a current through an inductive load, which can be connected to a power supply, to a prescribed nominal current value, where the method comprises the following method steps: ... | 01/02/2007 |
| 7145397 | Output overvoltage protection circuit for power amplifier Disclosed is an output overvoltage protection circuit for a power amplifier having a plurality of stages, which comprises a monitor circuit for monitoring an output overvoltage of an output transistor in the final stage of the power amplifier and allowing a current ... | 12/05/2006 |
| 7131436 | Engine ignition system having noise protection circuit An ignition system for an internal combustion engine is connected to an ignition coil and to a circuit for providing an ignition signal. The ignition system includes a switch circuit connected to the ignition coil that switches on or off current supplied to the igni... | 11/07/2006 |
| 7131437 | Ignition device for internal combustion engine An ignition device for an internal combustion engine includes a power transistor connected to a primary coil of an ignition coil, a current sensing resistor connected in series with the power transistor, a constant current circuit and an abnormal oscillation control... | 11/07/2006 |
| 7120143 | Voice-over Internet protocol processor The present invention is directed to audio processing including IP telephony audio processing. Voice-over-IP terminals used in phone terminal applications benefit from a low-power implementation suitable for the limited chassis area of these devices. According to an... | 10/10/2006 |
| 7107976 | Inductive load powering arrangement An inductive load powering arrangement (20) utilizes current monitoring on only one side of the load (22) which in one example is a fuel injector coil. In disclosed examples, a high side driver (28) is on a first side of the coil (22) and... | 09/19/2006 |
| 7095182 | Ignition control apparatus for internal combustion engine An ignition control apparatus for an internal combustion engine of the present invention has a switching circuit and a control circuit. The switching circuit includes a first switch controlling a main current constituting the most portion of the coil current, a seco... | 08/22/2006 |
| 7091633 | Current-limiting logic interface circuit A circuit of interface between a logic sensor and a logic input isolation barrier of a processing circuit, including an element of protection against input overvoltages, a current-limiting circuit connected in series between an input terminal and an output terminal ... | 08/15/2006 |
| 7082934 | Controlling spark for an engine with controllable valves A system and method to control spark in a cylinder of a multi-cylinder engine. Spark can be controlled in a cylinder based on operating conditions of a selectively operable valve. ... | 08/01/2006 |
| 7055372 | Method of detecting cylinder ID using in-cylinder ionization for spark detection following partial coil charging The present feature of the invention comprises a method and apparatus for determining cylinder ID. When a cylinder is compressed, the resistance increases across the spark plug gap. Thus, if a spark coil is only partially charged before activation of the spark, the ... | 06/06/2006 |
| 7051724 | Car-mounted igniter using IGBT An igniter of the present invention has an insulated gate semiconductor device having a collector terminal, an emitter terminal and a gate terminal, a current control circuit which limits current by controlling voltage at the gate terminal when current for flowing t... | 05/30/2006 |
| 7021299 | Multichannel electronic ignition device with high-voltage controller A control circuit is connected to a plurality of driving stages. Each driving stage includes a high-voltage terminal for driving an inductive load. The control circuit is provided with a corresponding plurality of control stages. These control stages are integrated ... | 04/04/2006 |
| 7013881 | Method for controlling ignition parameters of a spark plug for internal combustion engine The invention is a method for controlling ignition parameters of a spark plug (16) for an internal-combustion engine whose ignition is controlled by an engine control calculator, with the spark plug receiving a high voltage (U_HT) and a current (I_HT) from an... | 03/21/2006 |
| 7013882 | Over-dwell protection circuit for an automotive ignition control system An ignition control circuit (12) is responsive to a control signal (ESTC) to apply a drive signal (GD) to a power switching device (22) to conduct ignition coil current (IC) therethrough. A resistor (RS) included within the circui... | 03/21/2006 |
| 7007683 | Internal combustion engine ignition apparatus An internal combustion engine ignition apparatus includes a switching circuit having no power supply terminal connected to a power supply such as a battery is constructed, and including an output terminal connected to an ignition coil, an input terminal for receivin... | 03/07/2006 |
| 6997171 | Ignition apparatus for an internal combustion engine An ignition apparatus for an internal combustion engine is capable of avoiding mis-ignition even if subject to external disturbances when a fail signal is transmitted through a common signal line on which an ignition signal can also be transmitted. An igniter is con... | 02/14/2006 |
| 6971372 | Method and device for detecting a phase of a four-stroke gasoline engine A method and a device for detecting the phase of a four-stroke gasoline engine, a gasoline direct injection engine in particular. For reliable phase detection involving relatively little expense during a starting phase, a crankshaft is turned together with at least ... | 12/06/2005 |
| 6955164 | Automotive ignition system with sparkless thermal overload protection An interface for providing thermal overload protection includes a switching device, a temperature indicating device, a drive circuit and a thermal monitoring circuit. The thermal monitoring circuit is coupled across the temperature indicating device and provides a s... | 10/18/2005 |
| 6932065 | Internal combustion engine ignition apparatus There is proposed an internal combustion engine ignition apparatus in which a switching circuit having no power supply terminal connected to a power supply such as a battery, and includes an output terminal connected to an ignition coil, an input terminal for receiv... | 08/23/2005 |
| 6922057 | Device to provide a regulated power supply for in-cylinder ionization detection by using a charge pump A charge pump is used to supply current to the ionization detection circuit. To detect in-cylinder ions generated during the combustion process, a DC bias voltage needs to be applied. There are two ways to generate the DC bias: conventional DC power supply (large el... | 07/26/2005 |
| 6914434 | Driver circuit Driver circuit (1) for actuating an electrical device via a control line (3) and for diagnosing the state of the control line (3) and/or of the actuated device, having a test circuit (Q1-Q6, R1-R6), connected to the c... | 07/05/2005 |
| 6883508 | Method for controlling the primary ignition current of an internal combustion engine with controlled ignition Method for controlling a primary current in an ignition coil of an internal combustion engine with controlled ignition, the current is established in an inductive primary circuit over a given conduction time. The conduction time is calculated by: | 04/26/2005 |
| 6848437 | Ignition device for an internal combustion engine The ignition device for an internal combustion engine includes, a control unit (1) for outputting an ignition signal used to determine a time when an ignition plug (8) should be ignited, a switching unit (5) connected to the other terminal of a ... | 02/01/2005 |
| 6837230 | Ignition device for an internal combustion engine An ignition device for an internal combustion engine includes a control circuit that generates an ignition signal for allowing or interrupting the supply of a primary current of an ignition coil under control, a waveform shaping circuit that waveform-shapes the igni... | 01/04/2005 |
| 6814066 | Internal combustion engine ignition device and igniter for same An internal combustion engine ignition device able to suppress misfires etc. at abnormal times and achieving smaller size and lower cost, provided with an IGBT (switching device SW), a current limiting circuit for limiting a primary current running through the IGBT ... | 11/09/2004 |
| 6813933 | Method and device for positioning measuring displays for measuring ion currents A method is presented for positioning a measurement window in time for analysis of ionic current signals, detected at internal combustion engines via the electrodes of a spark plug, for an ignition system having an ignition transformer, e.g., a.c. ignition or in a c... | 11/09/2004 |
