Time measuring device, distance measuring device, and optical sensor device

Abstract

A time measuring device comprises a signal generating circuit configured to generate a plurality of reference signals in an equivalent cycle with different phases; a first counter configured to output a fine count value, using a plurality of first pulse signals obtained from the plurality of reference signals; a second counter configured to output a coarse count value, using a plurality of second pulse signals obtained from the plurality of reference signals and having frequencies lower than frequencies of the plurality of first pulse signals; and a control unit configured to determine whether to correct the coarse count value in accordance with the fine count value and the coarse count value latched with a latch signal, and, if the coarse count value needs to be corrected, configured to calculate a bin number, using the fine count value and a coarse correction value obtained by correcting the coarse count value.

Dependencies are inferred from the claim text.