US 12,311,961 B2
Electronic device including monitoring circuit of ramp signal and operating method thereof
Minwoo Lee, Hwaseong-si (KR); and Seongyeop Park, Seongnam-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Feb. 24, 2022, as Appl. No. 17/679,261.
Claims priority of application No. 10-2021-0025967 (KR), filed on Feb. 25, 2021.
Prior Publication US 2022/0266845 A1, Aug. 25, 2022
Int. Cl. B60W 50/02 (2012.01); B60W 50/00 (2006.01); B60W 60/00 (2020.01); H03K 4/08 (2006.01); H04N 17/00 (2006.01); H04N 25/75 (2023.01)
CPC B60W 50/0205 (2013.01) [B60W 60/001 (2020.02); H03K 4/08 (2013.01); H04N 17/002 (2013.01); H04N 25/75 (2023.01); B60W 2050/0047 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
a ramp generator configured to generate a ramp signal used to detect data, the ramp signal increasing or decreasing with a certain slope;
a main circuit configured to perform at least one predefined function by detecting the data based on the ramp signal;
a monitoring circuit configured to output a verify signal indicating whether the ramp signal is faulty; and
a controller configured to control execution of the at least one predefined function based on the verify signal,
wherein the monitoring circuit comprises:
a reference generator configured to generate at least one reference value;
a differentiator configured to calculate a slope of the ramp signal based on the ramp signal and a zeroth reference value provided from the reference generator;
a first comparator configured to generate a first comparison result by comparing the slope with a first reference value;
a second comparator configured to generate a second comparison result by comparing the slope with a second reference value; and
a discriminator configured to discriminate whether the ramp signal is faulty based on the first comparison result and the second comparison result.