OPTICAL COMMUNICATION DEVICE, TRANSMISSION SIGNAL, AND PROGRAM

• Main Author: AOYAMA CHIAKI
• Format: Patent
• Language: English; Japanese
• Published: 23.09.2016
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING; TRANSMISSION

PROBLEM TO BE SOLVED: To provide an optical communication device, a transmission signal, and a program with which it is possible to expand a detection distance range, improve detection accuracy, and improve detection signal strength at the same time.SOLUTION: The optical communication device comprises a light-receiving unit for receiving a transmission signal from an other optical communication device, and an arithmetic unit for calculating the distance between the own device and the other optical communication device on the basis of a phase difference detected by the light-receiving unit. The light-receiving unit is provided with a photoelectric conversion unit in which a plurality of pixels are arrayed and each of the pixels generates an electric charge corresponding to the amount of light exposure, a first electric charge accumulation unit for accumulating the electric charges generated by the photoelectric conversion unit, and m distribution gate units (m is an integer equal to or greater than 4), provided between the photoelectric conversion unit and the electric charge accumulation unit, which open or close and thereby control the ingress of electric charges from the photoelectric conversion unit to the electric charge accumulation unit. The light-receiving unit detects a phase difference between a light-emission signal received by the photoelectric conversion unit and a light-emission signal transmitted by the own device, and the arithmetic unit calculates the distance between the own device and the other optical communication device on the basis of the phase difference detected by the photoelectric conversion unit.SELECTED DRAWING: Figure 12 【課題】検出距離範囲の拡大と検出精度の向上と検出信号強度の向上が同時に成立させることができる光通信装置、送信信号及びプログラムを提供する。【解決手段】光通信装置は、他の光通信装置からの送信信号を受光する受光部と、受光部によって検出された位相差に基づいて自装置と他の光通信装置の距離を算出する演算部とを備え、受光部は、複数の画素が配列され画素それぞれが露光量に応じた電荷を生成する光電変換部と、光電変換部が生成した電荷を蓄積する第１の電荷蓄積部と、光電変換部と電荷蓄積部との間に設けられ、開閉することによって光電変換部から電荷蓄積部へ電荷が入ることを制御するｍ（ｍは４以上の整数）個の振り分けゲート部とを備え、受光部は、光電変換部が受光した発光信号と自装置が送信した発光信号の位相差を検出し、演算部は、光電変換部によって検出された位相差に基づいて自装置と他の光通信装置の距離を算出する。【選択図】図１２