Abstract: An example embodiment of a sound suppressor includes a shroud tube slidably and rotationally coupled to a vent tube. The vent tube is formed with a plurality of vent tube apertures in fluid communication with a bore extending from a first end to a second end of the vent tube. The shroud tube is formed with a plurality of shroud apertures in fluid communication with an interior void formed in the shroud tube. A rear cap attached to the vent tube is configured for attachment to the muzzle of a firearm. An indexing mechanism is configured for selectively holding the vent tube and shroud tube in an open-vent configuration with the apertures on both tubes overlapping one another, or in a closed-vent configuration with the apertures not overlapping. Sound suppression is enabled in the closed-vent configuration and minimized in the open-vent configuration.

Abstract: A blast shield attachment system that includes a collar having one or more locking notches formed at least partially therethrough and one or more engagement pins extending therefrom; and a blast shield having a collar receiving recess, wherein one or more engagement grooves extend from a first end of the blast shield, wherein one or more levers are pivotably attached or coupled to the blast shield, wherein each lever is pivotable for releasable engagement with a corresponding one of the locking notches of the collar, and wherein when at least a portion of the collar is appropriately received within the collar receiving recess, at least one of the one or more engagement pins is aligned within at least one of the one or more engagement grooves and each lever is releasably engaged with a corresponding one of the locking notches of the collar.

Abstract: A universal firearm shield adapted to attach to a firearm suppressor. Suppressors fail to dampen all of the effects of firearm discharge, leaving behind residual effects that may be noticeable. The shield dampens the residual effects of firearm discharge that are not captured by the suppressor. The residual effects are captured by the shield and dispersed throughout one or more interior chambers. The shield easily, quickly, and securely couples to suppressors of varying geometries due to the slidably adjustable components of the shield. The shield is configured to surround the suppressor and axially align with the suppressor. As such, the muzzle of the firearm axially aligns with the shield, the suppressor, and the barrel for an unobstructed projectile path during discharge.

Abstract: A method an apparatus for limiting the rotation of an upper assembly in relation to a subassembly of a firearm is disclosed. The apparatus has a rotation block having a housing; a sliding abutment coupled to the housing and coupled to an actuator; and an attachment coupled to the housing and configured to attach to an upper assembly of a firearm. The sliding abutment is able to move relative to the housing.

Abstract: A mount for holding and locking a firearm thereto. The mount includes an upwardly extending support mounted to a base, in turn, fixedly securable to a surface. The top end portion of the support is configured to extend into the magazine well of the firearm and has a mount pin slidably moveable into the firearm preventing removal of the firearm from the mount. A mechanism is provided for controllably moving the mount pin.

Abstract: The present disclosure relates to simulated hunting devices and methods, and in particular to an accessory for a real or toy firearm that provides a simulated hunting experience in a real hunting environment. A hunting simulation accessory can be attached to a real or toy firearm, such as by attaching the accessory to an accessory rail along the barrel of the firearm. The simulation accessory provides audio and visual responses to the user to simulate a hunting experience, even when no live ammunition is fired.

Abstract: A method and apparatus for firearm training simulator which simulates realistic recoil of conventional firearms. The method and apparatus incorporates a linear motor and controllable mass for generating recoil. One embodiment includes an adjusting system for adjusting the amount of recoil provided. Also provided are means for simulating semi-automatic and/or full automatic operation of firearms. One embodiment can include a laser emitter which simulates the path for a bullet fired from a firearm that the method and apparatus is simulating.

Abstract: A crossbow includes a stock, a bow connected to the stock, a string connected to the bow, a string loader for loading the string, and a trigger and safety apparatus for controlling the string. The trigger and safety apparatus includes a trigger unit, a trigger safety unit and a string safety unit. Due to the use of the string safety unit, loading and locking of the string are synchronously executed, and loading of the arrow and disabling of the string safety unit are synchronously executed. The trigger safety unit is movable between a locking position and an unlocking position. In the locking position, the trigger safety unit unlocks the trigger unit.

Abstract: Knife mounts configured to selectively secure to a firearm, the knife mount including a body secured between a muzzle and a pistol grip of the firearm, a slot defined in the body and complimentarily configured with the knife to receive the knife, a locking mechanism moveably mounted to the body proximate the slot, the locking mechanism configured to selectively secure the knife within the slot by engaging the handle of the knife, wherein the knife mount rigidly secures the knife in an orientation where the handle of the knife defines a foregrip of the firearm for a user to grip and manipulate the firearm and allows the user to rapidly remove the knife from the body.

Abstract: A bedside or chairside holster support for safely supporting a handgun in its holster on the side of a bed, or on the side of a chair or sofa, to provide rapid access to the handgun. The holster support includes a holster support bracket, and a T-shaped member that is held trapped between a mattress and a box spring, or under the seat cushion of a chair or sofa. The holster support maintains a handgun in a holster pointed downward at an angle of 15 degrees from straight downward for rapid access to the firearm, while keeping the muzzle of the handgun pointed in a safe direction. The holster support can be easily stored anywhere, and can be easily packed in a suitcase for travel.

Abstract: A flight control system for an aircraft includes a flight control computer operatively interconnected with a main rotor system and a translational thrust system of the aircraft. A selectively enabled integrated target and flight control system arranged in communication with the flight control computer. The integrated target flight and control system is configured to control pitch attitude and heading of the aircraft. When the integrated target and flight control system is enabled, at least partial operation of the aircraft is controlled in response to a pilot input via the flight control computer.

Abstract: A reinforced fabric is used in the making of clothes and bags and mainly includes a bulletproof cloth configured between a protective cloth attached to an inner lining cloth and an outer lining cloth opposite to the inner lining cloth, which can not only block the impact of bullets through the bulletproof cloth but facilitate blocking any slashing and stabbing of weapons with the high density of the protective cloth. The present invention can not only protect a wearer's personal safety but improve a user's wearing comfort.

Abstract: A method comprising the steps of propagating an infrared laser pulse in air, self-focusing the laser pulse until the laser reaches a critical power density, wherein molecules in the air ionize and simultaneously absorb a plurality of infrared photons resulting in a clamping effect on the intensity of the pulse, wherein the laser pulse defocuses and plasma is created, causing a dynamical competition between the self-focusing of the laser pulse and the defocusing effect due to the created plasma, the laser pulse maintaining a small beam diameter and high peak intensity over large distances, creating a plasma column, repeating the above steps to create a plurality of plasma columns, creating a parallel linear array with the plurality of plasma columns, and using the array to deflect an incident energy.

Abstract: A toy may include a target having a target magnet and a first color configured to become a second color when the target is activated. The toy also may include a backing having a backing magnet configured to be mounted to an interior of a garment. The backing may be magnetically attracted to the target magnet through the garment when the target is on an exterior of the garment. The target may be configured to be retained on the garment only via magnetic force between the target magnet and the backing magnet. The target and the backing may be configured to be readily removed from the garment and have numerous re-uses for future play.

Abstract: Stoppage-inducing ammunition cartridges have a case having a rear head surface, a circumferential extractor groove forward of the rear head surface, a body portion forward of the circumferential extractor groove defining a case axis perpendicular to the rear head surface, and a forward mouth, a primer received in the case, a propellent within the case, a bullet received in the forward mouth, and the circumferential extractor groove being defined in part by a rear extractor surface angularly disposed with respect to a plane perpendicular to the case axis, such that an extractor adapted to engage a groove surface perpendicular to the case axis will have limited effect at extracting the cartridge from a firearm chamber after discharge. The rear extractor surface may be a frustoconical surface. The rear extractor surface may be a tapered surface acutely angled with respect to the case axis.

Abstract: A submunition delivery device including a master electronics module; a submunition module operatively connected to the master electronics module and including a plurality of submunition banks separated by bulkheads. Each of the submunition banks includes a plurality of submunitions; a base plug module operatively connected to the submunition module; and a distributed fuze module operatively connected to the master electronics module to limit a detrimental effect of the plurality of submunitions upon a collision by arming the plurality of submunitions before a dispense action.

Abstract: A flatness detector includes a positioning plate, a positioning assembly arranged on a top surface of the positioning plate, a dial indicator arranged on the positioning assembly, and a sliding block. The positioning assembly includes a first positioning rod and a second positioning rod perpendicularly coupled together and pin-jointed. The dial indicator includes a detecting post maintained as a plumb line by the positioning assembly. The sliding block defines a groove for conforming to the detecting post. A measurement value of the dial indicator is obtained when the groove of the sliding block is conformed to the detecting post.

Abstract: A tool for measuring dimensions of disc brake components has an elongated first member. The elongated first member has a first tip extending transversely from the first member. The first tip has a first projection at an end portion of the first tip. An elongated second member is relatively movable to first member. The second member has a second tip extending transversely from the second member in the same direction as the first tip of the first member. The second tip has a second projection at an end portion of the second tip and extends in a direction towards the first projection. First indicia are provided on the first and second members to indicate the relative distance between the first and second projections when measuring an object located between the first and second projections.

Abstract: The present invention relates to a method for single-point probing of a workpiece by means of a sensor, in particular a tactile sensor, of a coordinate measuring machine, comprising the steps of providing a variable at least indirectly representing a required accuracy of the single-point probing, providing a parameter data set, wherein the parameter data set has prescriptions for regulating and/or evaluating the single-point probing with the required accuracy, and carrying out the single-point probing of the workpiece, wherein the coordinate measuring machine is regulated on the basis of the provided parameter data set and/or an evaluation is carried out on the basis of the provided parameter data set. Furthermore, a coordinate measuring machine for single-point probing of a workpiece is proposed.

Abstract: A measurement substrate for measuring a condition pertaining in an apparatus for processing production substrates during operation thereof, the measurement substrate including: a body having dimensions compatible with the apparatus; a plurality of sensor modules embedded in the body, each sensor module having: a sensor configured generate an analog measurement signal, an analog to digital converter to generate digital measurement information from the analog measurement signal, and a module controller configured to output the digital measurement information; and a central control module configured to receive the digital measurement information from each of the module controllers and to communicate the digital measurement information to an external device.

Abstract: The present disclosure provides a magnet device for providing the magnetic density changes/magnetic field changes in relation to a detecting position. The magnet device comprises a magnet member adapted to be mounted on a rotatable shaft and be rotated for producing the magnetic density changes/magnetic field changes in relation to the detecting position when the magnet member is rotating around the rotatable shaft. To concentrate/condense the density of the magnetic density changes/magnetic field changes, the magnet device includes a magnetic flux density concentrator.

Abstract: An interference measurement device configured to detect a phase from an interference beam between an object beam and a reference beam, includes: a laser beam source; a splitter configured to split an emitted beam from the laser beam source into the object beam and the reference beam; an object beam optical unit configured to make only the object beam incident on a measurement object; a combination unit configured to combine the object beam and the reference beam; a phase element configured to vary mutual relationship in phase between the object beam and the reference beam; and a detector configured to detect the interference beam between the object beam and the reference beam. A signal of a spatial phase variation of the measurement object is directly operated, based on at least two measurement results of an intensity signal with the detector.

Abstract: A method for providing information about a sensor chain of a coordinate measuring machine is disclosed. The coordinate measuring machine may include a drive mechanism for moving a tool carrier relative to a base for approaching a measurement point. The CMM also may also include a sensor chain carried by the tool carrier and an arrangement of sensor chain components providing a particular sensor configuration for measuring the measurement point, and a camera for providing an image of at least a part of the sensor chain. The method may include capturing an image of at least a part of the sensor chain, deriving at least one sensor chain property from the image by image processing, comparing the sensor chain property with reference data which relates to a set of known sensor chain components and providing an output relating to the comparison of the sensor chain property with the reference data.

Abstract: Methodologies and an apparatus for enabling three-dimensional scatterometry to be used to measure a thickness of dielectric layers in semiconductor devices are provided. Embodiments include initiating optical critical dimension (OCD) scatterometry on a three-dimensional test structure formed on a wafer, the three-dimensional test structure comprising patterned copper (Cu) trenches with an ultra-low k (ULK) dielectric film formed over the patterned Cu trenches; and obtaining, by a processor, a thickness of the ULK dielectric film based on results of the OCD scatterometry.

Abstract: Embodiments of the present disclosure provide a functional assembly, a display device and a terminal. The functional assembly includes a sensor unit, a first light-guiding component and a camera. The sensor unit includes an emitter and a receiver. The emitter is configured to emit probe light. The first light-guiding component is configured to introduce the probe light and transmit the probe light to the outside through the camera. The receiver is configured to receive detection light through the camera, the detection light being formed by reflection of the probe light against an obstacle.

Abstract: A three-dimensional measurement device which is capable of increasing the operability at the time of repeatedly performing dimension measurement for a plurality of measurement target objects having substantially the same shape is provided. There are included a template storage unit for storing, as a template, model three-dimensional shape data and an operation procedure of dimension measurement performed on the model three-dimensional shape image, and a positional relationship specification unit for specifying a relative positional relationship between the model three-dimensional shape data and measurement three-dimensional shape data. The geometric element extraction unit specifies a geometric element of a measurement three-dimensional shape based on the relative positional relationship and the template, and the dimension value calculation unit performs dimension measurement on the measurement three-dimensional shape based on the relative positional relationship and the template.

Abstract: A three-dimensional measurement device includes: a projector including: a light source that emits a predetermined light; a grid that converts the light from the light source into a predetermined striped pattern; and a driver that moves the grid, and the projector projecting the striped pattern onto a measurement object; an imaging device that takes an image of the measurement object on which the striped pattern is projected; and a controller that: controls the projector and the imaging device to obtain a plurality of image data having different light intensity distributions; executes three-dimensional measurement of the measurement object by phase shifting based on the image data having different light intensity distributions; and obtains each of the image data among the image data having different light intensity distributions.

Abstract: This marker comprises a plurality of convex-surface section disposed along the X-axis direction and a plurality of detection sections disposed so as to face the convex-surface sections. Each of the detection sections is located, in the protruding direction of the convex-surface sections, closer to the convex-surface section side than a focal point on an image surface of the convex-surface section of the first optical unit in the X direction and is located on a single plane located further on the opposite side from the protruding direction than the edge of the image surface. The image surface extends from the first optical unit to the nth optical unit in the X direction, where n is at least 2.

Abstract: A device for measuring cavities has a main body, at least one first distance sensor mounted on the main body and rotatable about an axis of rotation for contactlessly measuring distances in a radial direction with respect to the axis of rotation, a holder for fixing the device within the cavity in a position in which the main body assumes an orientation in which the axis of rotation of the first distance sensor coincides substantially with a center axis of the cavity, and at least one second distance sensor, arranged on the main body, for contactlessly measuring distances in a direction parallel to the axis of rotation, the axis of rotation passing through a detection area of the second distance sensor.

Abstract: A method of determining a parameter of a patterning process applied to an object comprising two features (for example an overlay of the two features) comprises: irradiating the two features of the object with a radiation beam and receiving at least a portion of the radiation beam scattered from the two features of the object. The at least a portion of the radiation beam comprises: a first portion comprising at least one diffraction order and a second portion comprising at least one diffraction order that is different to a diffraction order of the first portion. The method further comprises moderating a phase difference between the first and second portions and combining the first and second portions such that they interfere to produce a time dependent intensity signal. The method further comprises determining the parameter of the patterning process from a contrast of the time dependent intensity signal.

Abstract: A vehicle wheel alignment system has a plurality of cameras, each camera for viewing a respective target disposed at a respective wheel of the vehicle and capturing image data of the target as the wheel and target are continuously rotated a number of degrees of rotation without a pause. The image data is used to calculate a minimum number of poses of the target of at least one pose for every five degrees of rotation as the wheel and target are continuously rotated the number of degrees of rotation without a pause. At least one of the cameras comprises a data processor for performing the steps of preprocessing the image data, and calculating an alignment parameter for the vehicle based on the preprocessed image data.

Abstract: Provided is a sensor device including a sensor configured to output a vibration datum by detecting a change in a state of a vibration in a first object when a second object touches the first object, a holding section configured to hold, at a portion of the first object which is different from a portion where the second object touches, the sensor in a state where the vibration in the first object is transmitted, and a communication section configured to transmit the single vibration datum detected by the sensor to an analyzing device which identifies a touch position where the second object touches the first object by analyzing the vibration datum.

Abstract: Provided is a line displacement evaluation method of evaluating line displacement occurring in a press-formed article in press forming of forming a character line. This method includes acquiring a cross section profile of the press-formed article measured so as to traverse the character line formed in the press-formed article; calculating a 4th order differential coefficient of the acquired cross section profile; and evaluating the line displacement, on the basis of the calculated 4th order differential coefficient of the cross section profile.

Abstract: An optical module includes a carrier, a light source disposed on an upper side of the carrier, an optical sensor disposed on the upper side of the carrier, and a housing disposed on the upper side of the carrier over the light source and the optical sensor. The housing defines a first aperture exposing at least a portion of the light source and a second aperture exposing at least a portion of the optical sensor. An outer sidewall of the housing includes at least one singulation portion adjacent to the upper side of the carrier and perpendicular to the upper side of the carrier.

Abstract: The present technique relates to an apparatus and a method for measurement, and a program each of which enables distance estimation to be more simply carried out with higher accuracy. A three-dimensional measurement apparatus has a rotation control portion controlling rotation of a photographing portion by a rotation mechanism in such a way that the photographing portion is rotated with a center of rotation as an axis in a state in which a distance from the center of rotation of the rotation mechanism portion to a focal point position of the photographing portion is a constant distance; and a distance calculating portion calculating a distance to an object on a space on the basis of a plurality of photographed images obtained through photographing in positions different from one another by the photographing portion in a state in which the photographing portion is rotated.

Abstract: A device configured to apprehend a road surface shape by using data measured by a measuring device appropriately apprehends a road surface shape. A road surface shape measuring device is provided with a road surface information acquiring unit and a road surface shape determining unit. The road surface information acquiring unit acquires road surface information about each of multiple points on a road surface, the road surface information including: a road surface position which is the position, of the road surface, on a reference plane divided into a plurality of sectioned regions; and a road surface height which is the height of the road surface at the road surface position. The road surface shape determining unit estimates respective surface shapes of the sectioned regions by using the road surface information included in the corresponding sectioned regions, and thereby determines a partial shape or the entire shape of the road surface.

Abstract: A system receives data from a laser scanning device, a photogrammetric device, or similar data capture device. The data relate to an environment in a first state. The system generates a point cloud of the environment in the first state using the data, and provides the point cloud as input to a gaining engine. Output from the gaming engine is provided to an augmented reality, a virtual reality, or a mixed reality application. The system then generates a view of the environment in a second state using the augmented reality, virtual reality, or mixed reality application.

Abstract: The invention relates to a surveying system for surveying and tracking a mobile target object which defines a target point, wherein the surveying system has a control and evaluation unit, a surveying device with a sighting device which defines a target axis, and a target object. The control and evaluation unit is designed to track the moving target object within the scope of a target-finding functionality, wherein a first change in alignment of the target axis about a first axis occurs as a function of detected target-finding radiation in such a way that the target axis tracks the movement tendency of the target object.

Abstract: A method for generating a 3D combined model that represents a scene includes acquiring the coordinates in an external geodetic frame, acquiring at least one 3D primary model representing the scene, which model includes primary model elements, oriented in the geodetic frame. The primary model elements are assigned measured primary physical property values in the form of coordinates in a local three-dimensional coordinate system of the corresponding point. The method further includes generating a 3D secondary model representing the scene, wherein at least some secondary model elements are assigned coordinates in the local coordinate system and at least one secondary physical property value. At least some secondary model elements are assigned coordinates in the external geodetic frame. The primary and at least one secondary model are then combined. Also disclosed are a related system and reference members for use in the system.

Abstract: The present invention discloses a laser level, which includes a top surface and a bottom surface parallel to each other, and a main body to be installed with a plurality of vials. One end of said main body has an integrally extended configuration of a base. Said base is pivotally connected to one end of a connector, while the other end of said connector is bound with a laser module, so that the laser module can rotate freely around the pivot between the connector and the base to adjust the projection angle of the laser beam.

Abstract: Exemplary practice of the present invention provides a carriage including a body having a void, a vertical rod passing through the void, four legs arranged rectangularly and projecting obliquely downward and outward from the body, and a vertical coil spring coaxially encompassing a lower portion of the vertical rod. The carriage is coupled with a retroreflective laser target at the bottom of the vertical rod whereby the top of the spring pushes against the bottom of the body and the bottom of the spring pushes against the top of the target. The target continuously adjusts in height so that the bottom of the target remains in constant spring-tension contact with the surface on which the carriage sits or travels, supported by its legs. The carriage is electromechanically propelled, and laser tracking is conducted to direct laser beams at and receive laser retroreflections from the target at various surface locations.

Abstract: A vehicle directional heading system suitable for use in a vehicle includes a forward viewing camera viewing through a heatable localized region of the windshield, which includes a heating element disposed thereat. A compass system includes a compass sensor and associated compass circuitry that, responsive to an output of the compass sensor indicative of sensed magnetic fields, is operable to determine a directional heading of the vehicle. When the heatable localized region is heated by an electrically resistive material of the heating element passing an applied electric current when the heating element is electrically powered, a magnetic signature is generated. The compass sensor of the compass system senses said magnetic signature, and the compass circuitry determines a vehicle directional heading of the vehicle that is compensated for the magnetic signature.

Abstract: A composite sensor includes a first shield pattern that functions as a noise shield of a circuit board, a second shield pattern that functions as a noise shield of a first sensor, and a third shield pattern that functions as a noise shield of a second sensor. The first shield pattern has an impedance lower than the second shield pattern and the third shield pattern. The second shield pattern and the third shield pattern are electrically connected to each other through the first shield pattern. Accordingly, deterioration of detection accuracy caused by electrical noise is restricted.

Abstract: In an embodiment, a method and system are provided for determining a pedestrian position via dead reckoning on a portable device carried by the pedestrian (or “user”). The device has at least a processor, a 3D accelerometer, and a 3D gyroscope. The 3D accelerometer, and a 3D gyroscope are sampled to calculate device orientation, and then 3D accelerometer samples are gathered during a sensor time frame and an average step frequency is calculated. The user's speed and direction of movement are estimated and a device velocity is calculated relative to a prior device velocity via dead-reckoning. The estimated device velocity is corrected for drift and the pedestrian position is calculated based on the corrected estimated current device velocity.

Abstract: Location information is used to build a database of locations having associated audio, video, image, or text data. In some implementations, a device includes a touch-sensitive display and collects data associated with a geographic location of interest. The geographic location of interest can be displayed on a map using an indicator. A touch selection of the indicator provides access to the data through an interface displayed on the touch-sensitive display. One or more locations of interest can be displayed and grouped together by an attribute.

Abstract: A road boundary detection system includes: an optical scanner configured to emit a light to an object to acquire measurement data reflected from the object; and a processor configured to extract a plurality of straight lines in order of a priority on each of the plurality of straight lines when a higher priority is given to a straight line including more of the contact points, based on the measurement data, configured to calculate a score of each straight line by assigning a score to the contact point included in the extracted straight lines and by assigning a score to a non-contact point included in other straight line having the same angle as the contact point, and configured to select a road boundary according to the priority of the calculated score of each straight lines.

Abstract: In this vehicle position estimation device, positions of a target present in a periphery of a vehicle is detected and, in conjunction therewith, amounts of movements of the vehicle is detected, and the positions of the target is stored as target position data, based on the amounts of movements. In addition, a portion of the target position data are grouped into a group according to turning states of the vehicle, and, based on amounts of movements of the vehicle when the target position data are detected, an adjustment range for the group is set. Further, map information including positions of the target is acquired and, by matching the target position data with the positions of the target in the map information based on the set adjustment range, a vehicle position of the vehicle is estimated.

Abstract: A system or a method is provided to provide shopping detours to users during traffic congestions. In particular, the system may detect that a user is experiencing or is about to experience a traffic congestion. The system may then estimate the additional travel time needed to go through the traffic congestion. The system may also find shopping detours which allow the user to take the shopping detours to make purchases and still arrive at the final destination at about the same time as if the user stays in the original route with the traffic congestion.

Abstract: A network system, such as a transport management system, selects a pickup location for a trip and navigates a rider to the selected pickup location using augmented reality (AR). Responsive to receiving a trip request including an origin location, a pickup location selection module selects candidate pickup locations within a threshold distance of the rider client device. The pickup location selection module filters and ranks the candidates based on historical service data and location characteristics associated with the origin location as well as any history of pickups of the rider at the origin location and data from the trip request. The top-ranked candidate is selected as the pickup location and sent to the rider and driver client devices. An AR navigation module instructs the rider client device to visually augment a live video stream with computer-generated AR elements to navigate the rider from a current location to the pickup location.

Abstract: A method of providing navigation instructions in a locked mode of a device is disclosed. The method, while the display screen of the device is turned off, determines that the device is near a navigation point. The method turns on the display screen and provides navigation instructions. In some embodiments, the method identifies the ambient light level around the device and turns on the display at brightness level determined by the identified ambient light level. The method turns off the display after the navigation point is passed.