US 12,235,156 B2
Optical sensing device
Ming-Ching Kuo, Hsinchu County (TW)
Assigned to SEER MICROELECTRONICS, INC., Hsinchu County (TW)
Filed by Seer Microelectronics, Inc., Hsinchu County (TW)
Filed on Nov. 23, 2023, as Appl. No. 18/518,521.
Claims priority of provisional application 63/427,610, filed on Nov. 23, 2022.
Prior Publication US 2024/0319007 A1, Sep. 26, 2024
Int. Cl. G01J 1/44 (2006.01); H04N 25/773 (2023.01); H10F 77/00 (2025.01)
CPC G01J 1/44 (2013.01) [H04N 25/773 (2023.01); H10F 77/959 (2025.01)] 11 Claims
OG exemplary drawing
 
1. An optical sensing device, comprising:
an optical sensing element, sensing an incident photon and generating a sensing signal; and
a detection circuit, coupled to the optical sensing element and detecting a pulse width of the sensing signal, wherein the detection circuit generates a reset signal to reset the optical sensing element when the pulse width of the sensing signal is larger than a threshold value, the detection circuit further comprises a one-shot circuit generating an one-shot signal according to the sensing signal, and the threshold value is determined by a pulse width of the one-shot signal.