Abstract: A drive system for raising or lowering a sliding piece of a current collector for rail vehicles. The sliding piece is disposed on a positioning device of the current collector, and the sliding piece is configured to be brought into contact with an overhead line using contact pressure. The drive system includes a bellows drive which is actuated by compressed air to actuate the positioning device, and a pneumatic control unit having a control valve for supplying or withdrawing compressed air to/from the bellows drive. The drive system includes a detection line and a lowering valve for venting the bellows drive when pressure drops in the detection line, the lowering valve being a 3/2-way valve disposed in a pneumatic supply line between the control valve and the bellows drive.

Abstract: A panel for an electronic device, with a front side, and a back side. The panel including a sign, suitable to be viewed from the panel's front side, wherein the sign has an annular shape. The sign has 3 indicia mit light, each being an annular segment of the annular shape, each with an angular length, and further each two adjacent indicia mechanisms are spaced by an angular gap alpha, and wherein 0°<=alpha is <=20°.

Abstract: Methods, apparatuses and systems for establishing a telecommunication session may include receiving a plurality of communication identifiers of a first type, determining one or more communication identifiers of a second type based on, for each, its association with at least one of the communication identifiers of the first type, associating the one or more communication identifiers of the second type with an identifier of the telecommunication session, receiving a request to join the telecommunication session and bypassing an authentication action and granting the request to join the telecommunication session. Alternatively, methods, apparatuses and systems for establishing a telecommunication session may include initiating, at a time based on at least a time period associated with the telecommunication session, one or more connection requests, each connection request directed to one of the communication identifiers of the second type that is associated with the identifier of the telecommunication session.

Abstract: Methods, apparatuses and systems for establishing a telecommunication session may include receiving a plurality of communication identifiers of a first type, determining one or more communication identifiers of a second type based on, for each, its association with at least one of the communication identifiers of the first type, associating the one or more communication identifiers of the second type with an identifier of the telecommunication session, receiving a request to join the telecommunication session and bypassing an authentication action and granting the request to join the telecommunication session. Alternatively, methods, apparatuses and systems for establishing a telecommunication session may include initiating, at a time based on at least a time period associated with the telecommunication session, one or more connection requests, each connection request directed to one of the communication identifiers of the second type that is associated with the identifier of the telecommunication session.

Abstract: Methods and systems for synchronizing contact information from multiple sources across multiple devices associated with a user are provided herein. In some embodiments, a method for synchronizing contact information from multiple sources across multiple devices associated with a user may include receiving a contact modification message from a first device to modify a contact in a cloud contact address book, where the cloud contact address book includes contact information for a plurality of contacts from one or more devices associated with a user; modifying the contact in the cloud contact address book based on modification information included in the contact modification message; identifying at least one device of the plurality of devices in which the contact is a native contact; and pushing the modified contact to the identified at least one device.

Abstract: A scanning unit that includes a radiation source that emits electromagnetic radiation, which is used to scan a scale of a position measuring system, wherein the radiation source includes electrical connection elements. The scanning unit further including a holder upon which the radiation source is fixable, wherein the holder includes electrical conductor elements that electrically contact the electrical connection elements. The electrical conductor elements of the holder and the electrical connection elements of the radiation source form a guide on which the radiation source is movable along an adjustment path relative to the holder while maintaining electrical contact between the electrical connection elements and the electrical conductor elements. Maintaining electrical contact enables positioning the radiation source at various positions along the adjustment path on the holder wherein the electrical connection elements are in electrical contact with the electrical conductor elements.

Abstract: A method is described for executing an input using a virtual keyboard which is displayed on a screen and on which each key is represented by an object displayed on the screen. In said method, the three-dimensional position of at least one input object relative to a plane is monitored, the position of the input object parallel to the plane represents a selected spot on the screen, a key of the virtual keyboard represented by an object is highlighted on the screen when the selected spot in the display on the screen is located within the object, an approach of the input object towards the plane is monitored, and a highlighted object is selected and a function associated with the key that is represented by the displayed object is input when the input object moves closer to the plane than a given distance and/or approaches the plane at a speed that is higher than a given approach speed.

Abstract: A system and method is described for controlling a selected input object displayed on a screen using at least one object. The three-dimensional position of the input object relative to a plane is monitored. The position of the input object parallel to the plane defines coordinates for the position of the selected object on the screen, and the display of the selected object on the screen changes in accordance with the position of the input object in a direction perpendicular to the plane.

Abstract: A position measuring device having a scanning device and a scale, wherein the scanning device is movable in relation to the scale in a measuring direction. The scale including a measuring graduation, wherein periodic measuring signals are generated when the scanning device scans the measuring graduation and a reference marking, wherein a reference marking signal is generated when the scanning device scans the reference marking with a scanning beam bundle. The scale further includes a first optically scannable area marking next to the reference marking and a second optically scannable area marking next to the reference marking and which has a different optical deflection property than the first optically scannable area marking, wherein photoelectric scanning of the first and second optically scannable area markings with the scanning beam bundle from the scanning device generates an area signal that differentiates characteristics of the first and second optically scannable area markings.

Abstract: A position measuring device having a scanning device and a scale, wherein the scanning device is movable in relation to the scale in a measuring direction. The scale including a measuring graduation, wherein periodic measuring signals are generated when the scanning device scans the measuring graduation and a reference marking, wherein a reference marking signal is generated when the scanning device scans the reference marking with a scanning beam bundle. The scale further includes a first optically scannable area marking next to the reference marking and a second optically scannable area marking next to the reference marking and which has a different optical deflection property than the first optically scannable area marking, wherein photoelectric scanning of the first and second optically scannable area markings with the scanning beam bundle from the scanning device generates an area signal that differentiates characteristics of the first and second optically scannable area markings.