Abstract:
A system for identifying the position of a tire on a vehicle based on wireless messages received from the tire includes a receiver circuit, a signal strength circuit, a memory, and a processing circuit. The receiver circuit is configured to receive the wireless messages. The signal strength circuit is configured to determine the signal strengths of the wireless messages. The memory is configured to store a predetermined frequency distribution. The processing circuit is configured to provide a frequency distribution of the wireless messages based on the signal strengths and to compare the frequency distribution to the predetermined frequency distribution to determine the position of the tire on the vehicle.
Abstract:
A wireless control system for wireless control of a home electronic system based on the location of the wireless control system includes a transmitter circuit, an interface circuit, and a control circuit. The transmitter circuit is configured to transmit a wireless control signal having control data which will control the home electronic system. The interface circuit is configured to receive navigation data from a navigation data source. The control circuit is configured to receive the navigation data, to determine a distance between the wireless control system and the home electronic system based on the navigation data, and to command the transmitter circuit to transmit the wireless control signal based on the distance.
Abstract:
The compass system of the present invention utilizes an improved calibration routine in which a processing circuit of the compass recalibrates the compass each time three data points are obtained from a magnetic field sensor that meet predetermined criteria. One such criterion is that the three data points define corners of a triangle that is substantially non-obtuse. When three data points have been obtained that define a triangle meeting this criterion, the processing circuit calculates a center point for a circle upon which all three data points lie by solving the equation x2nully2nullAxnullBynullCnull0 for A, B, and C, using the coordinate values (x,y) for the three data points and defining the center point as (nullA/2, nullB/2).
Abstract translation:本发明的罗盘系统利用改进的校准程序,其中每当从满足预定标准的磁场传感器获得三个数据点时,罗盘的处理电路重新校准指南针。 一个这样的标准是三个数据点定义基本上不钝的三角形的角。 当获得三个满足该标准的三角数据点时,处理电路通过求解方程x 2 + y 2 + Ax + By +计算所有三个数据点所在的圆的中心点, 对于A,B和C,C = 0,使用三个数据点的坐标值(x,y)并将中心点定义为(-A / 2,-B / 2)。
Abstract:
A transmitter for wirelessly controlling a plurality of remote electronic systems includes a memory, a transmitter circuit, and a control circuit. The memory is configured to store a plurality of control data messages, each control data message configured to control a different remote electronic system. The control circuit is configured to command the transmitter circuit to transmit a plurality of wireless control signals in response to a single event, each wireless control containing a different control data message.
Abstract:
A compass display or a low cost construction includes a display coupled to compass sensing and calibration devices to illuminate a portion of the display to indicate a specific heading. The display is mounted beneath a finish covering surface and includes indicia representing compass directional headings attached or printed thereon and the finish covering is supported by a substrate having a plurality of openings spaced relative to a center point and a plurality of light sources such as LED lights located in the holes of the substrate to be located behind the finish covering and aligned with the directional headings. When a light is illuminated, it is visible behind the finish covering to a driver or other occupant of the vehicle. In a preferred embodiment, twelve openings and associated light sources are provided in the substrate and spaced at 30-degree increments to provide a more precise indication of the vehicle heading. The compass display may be located on the instrument panel, in the headliner, on the A-pillar, on a visor or in any other advantageous location within the passenger compartment. For a movable object like the visor location, a switch is provided to disconnect a power source for the compass display when the visor is moved from its stowed, operating position.
Abstract:
A wireless control system for wireless control of a remote electronic system includes a wireless control system circuit coupled to a vehicle interior. The circuit includes a transmitter circuit configured to transmit a wireless control signal having control data which will control the remote electronic system, a timing circuit configured to transmit a timing signal, and a control circuit coupled to the transmitter circuit and the timing circuit. The control circuit is configured to receive the timing signal and to command the transmitter circuit to transmit the wireless control signal based on the timing signal.
Abstract:
A vehicle communication system provides for enhanced communication with passengers using in-vehicle entertainment systems. A microphone is activated by a driver or passenger, and sound is broadcast from the microphone to at least one loudspeaker. In addition, a broadcast of audio signals from an in-vehicle entertainment systems to headphones worn by a passenger is interrupted.