TIME MEASUREMENT DEVICE AND TIME MEASUREMENT APPARATUS

• Main Author: HIRONO DAISUKE
• Format: Patent
• Language: English; Japanese
• Published: 13.02.2020
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

To provide a time measurement device that can shorten dead time.SOLUTION: A time measurement device according to the present disclosure comprises: a light receiving element; a delay circuit that can change delay time; a pixel that can output a pulse signal including a light reception pulse having a pulse width according to the delay time as an output signal in a first operation mode, and that can constitute a ring oscillator using the delay circuit and can output an oscillation signal in the ring oscillator as the output signal in a second operation mode; and a time measurement unit that can perform time measurement processing on the basis of the output signal.SELECTED DRAWING: Figure 4 【課題】デッドタイムを短くすることができる時間計測デバイスを得る。【解決手段】本開示の時間計測デバイスは、受光素子と、遅延時間を変更可能な遅延回路とを有し、第１の動作モードにおいて、遅延時間に応じたパルス幅を有する受光パルスを含むパルス信号を出力信号として出力可能であり、第２の動作モードにおいて、遅延回路を用いてリングオシレータを構成可能であり、リングオシレータにおける発振信号を出力信号として出力可能な画素と、出力信号に基づいて時間計測処理を行うことが可能な時間計測部とを備える。【選択図】図４