US 12,213,651 B2
Imaging system and endoscope
Yasunari Harada, Ebina (JP)
Assigned to OLYMPUS CORPORATION, Tokyo (JP)
Filed by OLYMPUS CORPORATION, Hachioji (JP)
Filed on Jun. 29, 2022, as Appl. No. 17/852,503.
Application 17/852,503 is a continuation of application No. PCT/JP2020/000463, filed on Jan. 9, 2020.
Prior Publication US 2022/0322923 A1, Oct. 13, 2022
Int. Cl. A61B 1/045 (2006.01); A61B 1/00 (2006.01); H04N 23/50 (2023.01); H04N 23/60 (2023.01); H04N 25/75 (2023.01)
CPC A61B 1/045 (2013.01) [A61B 1/00006 (2013.01); H04N 23/555 (2023.01); H04N 23/60 (2023.01); H04N 23/665 (2023.01); H04N 25/75 (2023.01)] 10 Claims
OG exemplary drawing
 
1. An imaging system, comprising:
a camera unit; and
a control unit that is configured to operate on the basis of a system clock and is connected to the camera unit by a signal line that transmits serial data and the system clock,
wherein the camera unit comprises:
an imager configured to generate an analog video signal on the basis of a camera clock;
a video output circuit configured to convert the analog video signal into digital data and output the serial data including the digital data to the signal line on the basis of a serial clock having a higher frequency than a frequency of the camera clock;
a camera-clock generation circuit configured to generate the camera clock synchronized with the system clock output to the signal line; and
a serial-clock generation circuit configured to generate the serial clock synchronized with the system clock output to the signal line, and
the control unit comprises:
a video reception circuit that is electrically connected to the signal line and is configured to receive the serial data; and
a system-clock output circuit configured to output the system clock to the signal line in a blanking period during which output of the serial data to the signal line is stopped.