A waveform capture device (WCD) is a flexible measurement system capable of recording complex digital signals on trillionth-of-a-second (ps) time scales. The WCD may be implemented via modular code on an off-the-shelf field-programmable gate-array (FPGA), and incorporates both time-to-digital converter (TDC) and digital storage oscilloscope (DSO) functionality. The device captures a waveform by taking snapshots of a signal as it propagates down an ultra-fast transmission line known as a carry chain (CC). It may be calibrated via a dynamic phase-shifting (DPS) method that requires substantially less data and resources than conventional techniques.

Systems and methods for determining the amount of time that an object occupies a predetermined space are provided. In one implementation, a system comprises a sensor configured to determine a start time when a recognizable object enters a predetermined space. The sensor is further configured to determine an end time when the recognizable object leaves the predetermined space. The system also includes a processing device configured to determine an elapsed time, based on the start time and the end time, when the recognizable object remains in the predetermined space.

Systems and methods for determining the amount of time that an object occupies a predetermined space are provided. In one implementation, a system comprises a sensor configured to determine a start time when a recognizable object enters a predetermined space. The sensor is further configured to determine an end time when the recognizable object leaves the predetermined space. The system also includes a processing device configured to determine an elapsed time, based on the start time and the end time, when the recognizable object remains in the predetermined space.

A time measurement system includes a first sensor and a second sensor, each of which has a communication function, and an electronic device terminal carried by a measurement target person. The electronic device terminal carried by the measurement target person acquires sensor signals output by the first sensor and the second sensor arranged in a time measurement section and transmits the acquired sensor signals to a data server on the Internet. The data server performs arithmetic processing on the time information.

A circuit is disclosed. The circuit includes a time-to-digital converter (TDC), and an evaluation circuit coupled to the TDC and a phase-locked loop (PLL) external to the circuit.

Various embodiments of the present technology may provide methods and apparatus for a time-to-digital converter. The time-to-digital converter may include a state machine that increments/decrements according to an input signal and a count value. The time-to-digital converter may further include a register to store the count value according to the input signal.

A time-passage indicator device can comprise a housing, a plurality of light elements coupled to the housing, a window comprising an inner surface and an outer surface, and a processor that controls the plurality of light elements. The window can be attached to the housing and diffuse or scatter light emitted from the plurality of light elements. The light elements can emit the light through the window to form an illuminated region. The processor can control the light elements such that the illuminated region changes to indicate the passage of time. The illuminated region can have a minimum viewing angle from 0 degrees to 20 degrees, where the minimum viewing angle of 0 degrees is measured from a plane of the base surface.

A time-passage indicator device can comprise a housing, a plurality of light elements coupled to the housing, a window comprising an inner surface and an outer surface, and a processor that controls the plurality of light elements. The window can be attached to the housing and diffuse or scatter light emitted from the plurality of light elements. The light elements can emit the light through the window to form an illuminated region. The processor can control the light elements such that the illuminated region changes to indicate the passage of time. The illuminated region can have a minimum viewing angle from 0 degrees to 20 degrees, where the minimum viewing angle of 0 degrees is measured from a plane of the base surface.

An electronic device including: a positioning module that performs positioning by receiving radio waves from navigation satellites; a movement distance detection sensor that detects movement distance; and a processor that turns on power of the positioning module and, if positioning with the positioning module has not succeeded after a first prescribed period of time has elapsed, turns off power of the positioning module, wherein if the processor detects that the movement distance detected by the movement distance detection sensor starting from when the positioning module was turned off is greater than or equal to a prescribed distance, the processor turns on power of the positioning module.

An electronic device including: a positioning module that performs positioning by receiving radio waves from navigation satellites; a movement distance detection sensor that detects movement distance; and a processor that turns on power of the positioning module and, if positioning with the positioning module has not succeeded after a first prescribed period of time has elapsed, turns off power of the positioning module, wherein if the processor detects that the movement distance detected by the movement distance detection sensor starting from when the positioning module was turned off is greater than or equal to a prescribed distance, the processor turns on power of the positioning module.