Abstract: A security system is disclosed with a digital processor-based wireless remote controller that sends command to perform system operations and receive confirmation of various aspects of the system. The security system monitors environmental and vehicle system parameters and automatically provides commands or prohibits issuance of commands to operate vehicles systems based on preset environmental and vehicle system conditions. The system reports command and response status to users through the remote controller.

Abstract: A security system is disclosed having a base controller, a base transceiver, a remote control, and a passive locking prevention device. The passive locking prevention device includes a detection device preferably located within the passenger compartment of the vehicle for detecting the remote control. The detection device preferably has a detection range extending only to the inside of the vehicle. The passive locking prevention device is configured such that the vehicle will not passively lock when the passive locking prevention device detects the remote control. The passive locking prevention device can be connected to the base controller via a wired or wireless connection. The remote control can contain an emission device that emits a detectable signal by the detection device, and upon such detection, the vehicle is prevented from locking. The system can visibly or audibly alert a vehicle owner if the vehicle is not passively locked.

Abstract: An acoustic transducer includes a frame, voice coil movable along a pole, magnetic structure generating magnetic flux in a gap where the voice coil moves, diaphragm attached to the coil, waveguide extension in front of the pole, inner flexible roll seal connecting the waveguide extension to neck area of the diaphragm, and outer seal connecting outer periphery of the diaphragm to the frame. The inner flexible roll seal seals the gap between the voice coil and the pole, isolating the air in front of the diaphragm from the air behind the diaphragm. The inner seal provides damping of unwanted resonances of the diaphragm. Together, the inner seal and the outer seal do not substantially decrease the piston area of the transducer, and do not substantially affect the transducer's movement. In combination, the inner seal and the waveguide extension tend to increase efficiency and decrease audio distortions of the transducer.

Abstract: A security system in a vehicle extends its protection to installed equipment of the vehicle, such as audio components and navigation systems. The installed equipment is armed and disarmed by the security system remote control, preventing the equipment from normal functioning after unauthorized removal. The security system further enables programming, monitoring, and diagnosing of the installed equipment through the security system remote control.

Abstract: A digital processor-based remote controller of a wireless remote control system includes a small number of manual input devices, such as keys and scroll wheels, and a graphical user interface. The remote controller can have a single scroll wheel with internal push-to-activate switch, and a small display. This configuration minimizes the size of the remote controller, while allowing for a large number of different control commands to be transmitted to the controlled system. In addition, the remote controller can be configured by the user of both right- and left-handed operation.

Abstract: A remote start method and apparatus for an engine coupled to a manual transmission, the method and apparatus including means for determining whether the manual transmission gears are disengaged and an alarm system coupled to the engine ignition system is armed prior to enabling ignition of the engine.

Abstract: An AM/FM modulation scheme is presented for optimizing communications between a remote control device held by a user and a receiving unit installed in a vehicle. Historically, these systems communicated with amplitude modulated signals having good range but poor immunity to ambient random radio frequency noise. Frequency modulated systems provide improved immunity to noise however at the expense of range. The object of this invention is to use two or more modulation modes to combine their advantages. A scheme has been devised whereby circuitry capable of alternately operating in at least two modes is used. The same information is therefore transmitted using two or more modulation techniques in succession. The receiving unit also has circuitry and has listening cycles ensuring eventual synchronization with the transmitting unit. If one mode fails due to distance or ambient noise, the other can then attempt to establish a link.

Abstract: An acoustic transducer includes a frame, voice coil movable along a pole, magnetic structure generating magnetic flux in a gap where the voice coil moves, diaphragm attached to the coil, waveguide extension in front of the pole, inner flexible roll seal connecting the waveguide extension to neck area of the diaphragm, and outer seal connecting outer periphery of the diaphragm to the frame. The inner flexible roll seal seals the gap between the voice coil and the pole, isolating the air in front of the diaphragm from the air behind the diaphragm. The inner seal provides damping of unwanted resonances of the diaphragm. Together, the inner seal and the outer seal do not substantially decrease the piston area of the transducer, and do not substantially affect the transducer's movement. In combination, the inner seal and the waveguide extension tend to increase efficiency and decrease audio distortions of the transducer.

Abstract: A loudspeaker motor structure uses variable geometry to change the effective magnetic field acting on the voice coil of the motor structure. A magnet generates the magnetic field, which couples into a front plate, a back plate, and a pole piece. In one loudspeaker, the front plate and the pole piece have notches and slots. Rotating the pole piece relative to the front plate varies the width of the gap between the pole piece and the front plate, and the effective magnetic field in the gap. In another loudspeaker, the pole piece moves up and down in relation to the back plate. This movement varies the magnetic coupling between the pole piece and the back plate and, consequently, the effective magnetic field in the gap between the pole piece and the front plate. Variations in the effective magnetic field in the gap result in variations of the loudspeaker parameters.

Abstract: A security system in a vehicle extends its protection to installed equipment of the vehicle, such as audio components, navigation systems, and entertainment systems. The installed equipment is armed and disarmed by the security system, preventing the equipment from normal functioning after unauthorized removal. The security system further enables programming, monitoring, and diagnosing of the installed equipment through the security system's remote control, through a configuration and maintenance tool that connects to the security system, or through other items of installed equipment within the vehicle, such as a rear-seat entertainment system.

Abstract: A security system provides interaction between the system's remote control (RC) device and field disturbance sensor/proximity detector. In selected embodiments, the system enables a user to adjust the detector's sensitivity through the RC device. The user puts the system in a programming mode and creates simulated security breach events. The system stores detector output corresponding to the events, and sets the detector's sensitivity based on the stored output. In embodiments, the system includes passive remote capability that automatically performs commands when a user approaches its base station. The base station uses output of the proximity detector to sense a person's movement near the base station, and sends an interrogatory transmission to the RC device. If the device is nearby, it responds to allow the base station to verify the device's identity. After the base station verifies identity of the device, it disarms the security system and unlocks the automobile doors.

Abstract: A remote control (RC) device and base station of a security system communicate automatic passive remote control commands at a lower power level than the level used to transmit other information. Lowering the power level of the passive remote control transmissions from the RC device decreases energy consumption and improves battery life. Additionally, the range of the automatic commands is shortened, potentially avoiding some unwanted door lock activations, security system arming and disarming events, and similar occurrences. At the same time, the range of the user-entered commands does not suffer. In embodiments where the RC device sends passive remote control commands in response to periodic interrogatory transmissions from the base station, the power level of the interrogatory transmissions is lower than the power level of other transmissions. Thus, frequency of unwanted door lock activations and arming/disarming events is decreased, while the range of other transmissions from the base station is unchanged.