Provided is a distance measuring method and device for selecting an optimum peak detection signal from among a plurality of peak detection signals, based on a level of at least one of a plurality of amplified electrical signals, and measuring a distance to an object by using the selected optimum peak detection signal.

Provided is a distance measuring method and device for selecting an optimum peak detection signal from among a plurality of peak detection signals, based on a level of at least one of a plurality of amplified electrical signals, and measuring a distance to an object by using the selected optimum peak detection signal.

A light receiving apparatus according to an embodiment includes: a light receiving unit (3) that includes a light receiving element; a light emission control unit (105a) that issues a trigger for causing a light source to emit light; a receiving unit (1150) that receives, from a light source unit (2) that includes the light source, a feedback signal that is output in accordance with a light emission timing at which the light source emits the light; a delay acquiring unit (1160) that acquires delay time of a reception timing at which the feedback signal is received by the receiving unit is delayed relative to an issue timing at which the trigger is issued; and a representative value acquiring unit (1052) that acquires a representative value of a plurality of pieces of the delay time acquired by the delay acquiring unit in accordance with the issue of the triggers issued by the light emission control unit a predetermined number of times.

Provided are a detection apparatus and a detection method. The detection apparatus comprises: a pulse light source, which is configured to emit a pulse light signal; a detector array, which includes a plurality of pixel units, wherein at least some of the plurality of pixel units are operating units, and the operating units obtain excitation information in response to background light and/or signal light photons incident thereon during a plurality of windows; and a processing module, which acquires time range information according to the excitation information of the operating unit.

Provided are a detection apparatus and a detection method. The detection apparatus comprises: a pulse light source, which is configured to emit a pulse light signal; a detector array, which includes a plurality of pixel units, wherein at least some of the plurality of pixel units are operating units, and the operating units obtain excitation information in response to background light and/or signal light photons incident thereon during a plurality of windows; and a processing module, which acquires time range information according to the excitation information of the operating unit.

A LIDAR scanning system uses a combination of a time-to-digital conversion (TDC) device and a multi-pixel photon counter (MPPC) to determine the peak location (time) and magnitude of a reflection of a laser beam off of an object. A configurable trigger threshold of the TDC indicates that a sufficient number of MPPC pixels have triggered that the peak detection module should begin sampling and storing MPPC counts of triggered pixels. When the light received from the reflected laser beam falls below the trigger threshold of the TDC, the MPPC stops sampling the MPPC counts. The peak magnitude of the reflection of the laser beam is determined from the highest sample count of the MPPC. A time at which the peak magnitude occurred is determined as the midpoint of TDC trigger points. The peak magnitude MPPC count is correlated to an intensity value.

A light sensor and a sensing method thereof are provided. The light sensor includes a plurality of sensing sub-pixels and a control circuit. The sensing sub-pixels are arranged in an array to form a sensing array. The control circuit is coupled to the sensing sub-pixels. The control circuit operates a plurality of diodes of the sensing sub-pixels in a photodiode mode to sense intensity of ambient light. The control circuit operates the diodes in a Geiger mode or in an avalanche linear mode according to the intensity of the ambient light.

A light sensor and a sensing method thereof are provided. The light sensor includes a plurality of sensing sub-pixels and a control circuit. The sensing sub-pixels are arranged in an array to form a sensing array. The control circuit is coupled to the sensing sub-pixels. The control circuit operates a plurality of diodes of the sensing sub-pixels in a photodiode mode to sense intensity of ambient light. The control circuit operates the diodes in a Geiger mode or in an avalanche linear mode according to the intensity of the ambient light.

The present technology relates to a light receiving device, a histogram generating method, and a distance measuring system that are capable of realizing a histogram generating circuit with a small area and low power consumption.

A light receiving device includes: a measuring unit that measures time information from a light emission timing of a light source to a light reception timing at which a light receiving element receives light; a storage unit that stores a plurality of pieces of the time information; and a merge circuit that merges the same pieces of the time information measured by the measuring unit into one piece of time information, and a histogram generating circuit that generates a histogram on the basis of one or more types of the time information after merging. The present technology can be applied to, for example, such as a distance measuring system that detects a distance to a subject in a depth direction and the like.

The present technology relates to a light receiving device, a histogram generating method, and a distance measuring system that are capable of realizing a histogram generating circuit with a small area and low power consumption.

A light receiving device includes: a measuring unit that measures time information from a light emission timing of a light source to a light reception timing at which a light receiving element receives light; a storage unit that stores a plurality of pieces of the time information; and a merge circuit that merges the same pieces of the time information measured by the measuring unit into one piece of time information, and a histogram generating circuit that generates a histogram on the basis of one or more types of the time information after merging. The present technology can be applied to, for example, such as a distance measuring system that detects a distance to a subject in a depth direction and the like.