Abstract: Disclosed is an arrangement for determining a chronological acceptance of spaced-apart devices, comprising at least one transmitter unit which is disposed on each device and from which a signal that identifies said device and has a predefined range can be transmitted. Several personal apparatuses are provided that are to be carried by one respective person and are fitted with a receiver for the signals and a device memory for storing data contents of the emitted signals during a given interval. The range of each transmitter unit defines a respective transmission range. The transmission range and a receive sensitivity of the receiver are adjusted to each other in such a way that no data can be received if the device is located outside a typical zone of attention or perception of humans relative to the personal apparatus carried by the person.

Abstract: The invention relates to a method for controlling the operating mode of a cleaner, in particular, a high-pressure cleaner, wherein a pump delivers cleaning fluid via a pressure line to a closable spray nozzle, a signal transducer which provides control signals as a function of the pressure in the pressure line being coupled with the pressure line. To further develop the method so that the cleaner can be reliably controlled in a constructionally simple manner from the spray nozzle, it is proposed, in accordance with the invention, that a first control signal be provided by the signal transducer by closing the spray nozzle, and a second control signal be provided by the signal transducer by subsequently opening the spray nozzle again, and that the operating mode of the cleaner be controlled as a function of the duration of the time interval between the two control signals. A cleaner, in particular, a high-pressure cleaner, for performing the method is also proposed.

Abstract: Disclosed is an arrangement for determining a chronological acceptance of spaced-apart devices, comprising at least one transmitter unit which is disposed on each device and from which a signal that identifies said device and has a predefined range can be transmitted. Several personal apparatuses are provided that are to be carried by one respective person and are fitted with a receiver for the signals and a device memory for storing data contents of the emitted signals during a given interval. The range of each transmitter unit defines a respective transmission range. The transmission range and a receive sensitivity of the receiver are adjusted to each other in such a way that no data can be received if the device is located outside a typical zone of attention or perception of humans relative to the personal apparatus carried by the person.

Abstract: A method and system for determining the television consumption habits of a test population by obtaining data relating to the program being viewed and/or recorded and transmitting the data through telephone connection to a central computer for evaluation. The data is obtained in a manner which enables the elimination of intervention or supervision by specialized person in the data acquisition process. Any data that is not decoded or is decoded with uncertainty can be determined or verified by means of a dialog with the central computer.