At a time that a position detecting device is initiated, an arithmetic processing unit calculates the absolute position of a rotating shaft at the time of initiation, on the basis of first to third analog signals corresponding to first to third angles of rotation, which are detected respectively by first to third rotational angle detectors. During rotation of the rotating shaft, a current position counter detects a current absolute position of the rotating shaft by counting a number of pulses of forward rotation pulses or reverse rotation pulses, corresponding to the first angle of rotation detected by the first rotational angle detector, taking as a standard a total number of pulses corresponding to the absolute position of the rotating shaft at the time of initiation.

A tachometer display system and method is provided. In one embodiment, a tachometer display system includes a tachometer for indicating a plurality of engine speeds. The tachometer is configured to display a current engine speed based on a current gear ratio of a manual transmission. At least two synchronous shift point indicators are displayed at variable locations near the tachometer. Each synchronous shift point indicator is displayed near a location on the tachometer associated with an engine speed that corresponds to a transmission input shaft speed for a downshifted gear ratio of the manual transmission from the current gear ratio.

A method, system, and devices for implementing a selectively lighted instrument cluster are disclosed herein. The aspects employ a light house layer (or collection of light house layers) using a combination of light and dark materials to provide individually lit indicia on a cover layer (i.e. applique layer) of an instrument cluster. The combination of light and dark layers selectively applied prevents light leakage into other non-intended portions on the viewable surface of the instrument cluster.

A method, system, and devices for implementing a selectively lighted instrument cluster are disclosed herein. The aspects employ a light house layer (or collection of light house layers) using a combination of light and dark materials to provide individually lit indicia on a cover layer (i.e. applique layer) of an instrument cluster. The combination of light and dark layers selectively applied prevents light leakage into other non-intended portions on the viewable surface of the instrument cluster.

This disclosure relates generally to motor vehicles, and more particularly to motor vehicle and device for visually indicating a speed of the motor vehicle, and method thereof. In one embodiment, a method is provided for visually indicating a speed of a motor vehicle. The method includes receiving an instantaneous speed of the motor vehicle from one or more odometry devices of the motor vehicle and an instantaneous temperature on an external surface of the motor vehicle from one or more temperature sensors. The method further includes configuring one or more thermoelectric couple strips to regulate temperatures of one or more corresponding thermochromic paint coating layers disposed on the external surface of the motor vehicle, based on the instantaneous speed and the instantaneous temperature, to dynamically control indication of a color pattern associated with a range of instantaneous speed of the motor vehicle.

A target reaching rotational speed set during a torque phase is set to a value higher than an actual engine rotational speed, the value being higher as one of a vehicle acceleration and an engine rotational speed gradient is larger. That is, as the acceleration is steeper, the target reaching rotational speed is set to a value closer to an upper limit rotational speed or rotational speeds proximate thereto. Thus, a display rotational speed displayed on a tachometer at the end of the torque phase becomes high rotational speed. Accordingly, there is provided a display control device for a vehicle that enables a driver to feel the use of engine performance to the limit.

A target reaching rotational speed set during a torque phase is set to a value higher than an actual engine rotational speed, the value being higher as one of a vehicle acceleration and an engine rotational speed gradient is larger. That is, as the acceleration is steeper, the target reaching rotational speed is set to a value closer to an upper limit rotational speed or rotational speeds proximate thereto. Thus, a display rotational speed displayed on a tachometer at the end of the torque phase becomes high rotational speed. Accordingly, there is provided a display control device for a vehicle that enables a driver to feel the use of engine performance to the limit.

A method, system, and devices for implementing a selectively lighted instrument cluster are disclosed herein. The aspects employ a light house layer (or collection of light house layers) using a combination of light and dark materials to provide individually lit indicia on a cover layer (i.e. applique layer) of an instrument cluster. The combination of light and dark layers selectively applied prevents light leakage into other non-intended portions on the viewable surface of the instrument cluster.

A method, system, and devices for implementing a selectively lighted instrument cluster are disclosed herein. The aspects employ a light house layer (or collection of light house layers) using a combination of light and dark materials to provide individually lit indicia on a cover layer (i.e. applique layer) of an instrument cluster. The combination of light and dark layers selectively applied prevents light leakage into other non-intended portions on the viewable surface of the instrument cluster.

A method for monitoring the speed of an inspection unit of a sewer inspection or maintenance system is provided where the inspection unit is movable in a sewer. The method includes a first step in which a driving speed of the inspection unit is detected, a second step in which the detected driving speed is compared with a predetermined driving speed, where a speed indicator is generated based upon the result of the comparison, a third step in which, based upon the generated speed indicator, a colored symbol is selected from a set of colored symbols, and a fourth step in which the selected colored symbol is displayed on a display device. The speed indicator indicates within which speed interval from a set of predetermined speed intervals the detected driving speed falls.