Sony Corporation

Ryuujirou Abe

Hiroshi Aoki

Satoshi Fukuda

An analog signal is accurately converted into a digital signal. An oscillator generates an oscillation signal having a cycle that depends on a signal level of an input analog signal. A current bit generation unit generates, as a current bit, a bit indicating a value of the oscillation signal at each of a plurality of timings within the cycle. A delay unit delays each current bit over a predetermined period and supplies the delayed current bit as a delayed bit. A determination unit determines whether a change amount of a phase of the oscillation signal changed within the predetermined period is greater than a half cycle of the cycle. An output unit generates and outputs data indicating a period in which respective values of the current bit and the delayed bit form a specific combination when the change amount is not greater than the half cycle, and generates and outputs data indicating a period in which the respective values of the current bit and the delayed bit are the same or form the specific combination when the change amount is greater than the half cycle.

Growing community of inventors

Kanagawa, Japan

Ryuujirou Abe