Recording data against time on graphical recording plate - rotating plate once per day with peripheral time markings

摘要

A data recording device has a data medium in the form of a graphical plate which rotates once in a defined period, pref. in 24 hours, so that the data are recorded against the tune at which it is measured. The device contains an arrangement for automatic time recording on the plate. A digital clock drives a decoder which converts the time signal with a number of pulses corresp. to the time. The time is recorded on the data medium digitally and can be read visually and automatically. It can be shown as block or beams corresp. to hours.