A test and measurement instrument includes an acquisition memory and a processor structured to store a stream of sampled incoming data samples in the acquisition memory. As the memory fills, the instrument automatically decimates either the data samples already stored in the acquisition memory, the incoming data samples, or both. The instrument may also store two copies of the incoming data samples, one at an increased decimation rate. The two copies are tied together with a timestamp or using other methods. The more highly decimated copy may be used to produce a video output of the stored data samples, saving the instrument from generating the video output from the larger sized sample.

A data acquisition system comprises a signal processing chain including an analog-to-digital converter (ADC) circuit configured to: produce a digital output from an input signal; detect a specified signal feature of the input signal; and change an operating condition of an additional circuit of the signal processing chain in response to detecting the signal feature of the input signal.

A semiconductor apparatus is used together with a processor. An A/D converter is configured to be calibratable. A logic circuit periodically supplies a calibration trigger to the A/D converter by means of a count operation using the output of an oscillator.

A semiconductor apparatus is used together with a processor. An A/D converter is configured to be calibratable. A logic circuit periodically supplies a calibration trigger to the A/D converter by means of a count operation using the output of an oscillator.

A signal processing apparatus includes a first signal processing circuit and the second signal processing circuit. The first signal processing circuit receives a first signal. The first signal processing circuit has a power end connecting to a first voltage and a reference ground end. The second signal processing circuit receives a second signal. The second signal processing circuit has a power end which is electrically coupled to the reference ground end of the first signal processing circuit or equals the reference ground end of the first signal processing circuit. The second signal processing circuit has a reference ground end connecting to a second voltage.

A touch analog front-end circuit includes a current conveyor and an accumulator. The current conveyor receives a first voltage as an operation voltage, and generates a current signal according to a touch sensing signal received from a touch display panel. The accumulator is coupled to the current conveyor, receives a second voltage as an operation voltage, and generates an accumulating result according to the current signal and a reference voltage. The first voltage is higher than the second voltage.

The invention relates to a method for determining a maximum allowable volume of water that can be removed over time from an underground water source, the volume of water being removed at a removal point and the hydrogeological state of the underground water source being qualified by piezometric measurements on a reference piezometer, the method being characterized in that it includes, in particular, a continuous measurement by a first piezometric level sensor on the removal point, the sensor having a first log of available data over a predetermined period that has passed; and another continuous measurement by a second piezometric level sensor on the reference piezometer, the second sensor having a second log of available data over the predetermined period that has passed; the method also comprising subsequent steps implemented by a calculation machine.

The invention relates to a method for determining a maximum allowable volume of water that can be removed over time from an underground water source, the volume of water being removed at a removal point and the hydrogeological state of the underground water source being qualified by piezometric measurements on a reference piezometer, the method being characterized in that it includes, in particular, a continuous measurement by a first piezometric level sensor on the removal point, the sensor having a first log of available data over a predetermined period that has passed; and another continuous measurement by a second piezometric level sensor on the reference piezometer, the second sensor having a second log of available data over the predetermined period that has passed; the method also comprising subsequent steps implemented by a calculation machine.

A system for quantitative water management comprises: at least two interconnected water production entities (U), at least one water resource (S) linked to one at least of the production entities (U), at least one demander element (D) requesting water produced defined by a pre-established temporal curve of water demand produced as a function of time, each link between production entities (U), water resources (S) and demander elements (D) being ensured by a transfer work (C) having a predetermined maximum flowrate and being able to be interconnected, each production entity (U) and each water resource (S) furthermore being associated with a weighting function P, and a calculator adapted to minimize the global weighting function Pg of the system while guaranteeing compliance with the pre-established temporal curve of water demand produced of each demander element (D) under constraint of compliance with the maximum flowrates of the various elements of the system.

A system for quantitative water management comprises: at least two interconnected water production entities (U), at least one water resource (S) linked to one at least of the production entities (U), at least one demander element (D) requesting water produced defined by a pre-established temporal curve of water demand produced as a function of time, each link between production entities (U), water resources (S) and demander elements (D) being ensured by a transfer work (C) having a predetermined maximum flowrate and being able to be interconnected, each production entity (U) and each water resource (S) furthermore being associated with a weighting function P, and a calculator adapted to minimize the global weighting function Pg of the system while guaranteeing compliance with the pre-established temporal curve of water demand produced of each demander element (D) under constraint of compliance with the maximum flowrates of the various elements of the system.