The invention relates to a
timekeeper and a time feedback, time calibration and pointer positioning method. The
timekeeper at least comprises a hour wheel sheet, a minute wheel sheet, an
electric motor and a controller, wherein the minute wheel sheet is provided with a
light hole, and the upside and the downside of the
light hole of the minute wheel sheet are respectively provided with an
infrared optical coupling generating side and an
infrared optical coupling receiving side; the
infrared optical coupling receiving side generates a position feedback
signal and sends to the controller when receiving infrared light; and when receiving the position feedback
signal, the controller obtains the current-time minute number of the
timekeeper, and determines the current indication time of the timekeeper by cooperating with an hour counter, wherein the current-time minute number of the timekeeper is a minute number preset by a
software. An infrared optical
coupling apparatus disclosed by the invention is capable of generating the position feedback
signal and sending to the controller when the
light hole passes the exact downside of the apparatus, so that the
current time of the timekeeper is determined, the
effective time feedback and
reliable transmission of pointer position are realized, and further calibration of the timekeeper is realized, and through assistant intelligent positioning of a pointer by a
software, convenient pointer installation positioning is realized.