US 12,452,029 B2
Endoscope system and scope
Takanori Tanaka, Hachioji (JP)
Assigned to OLYMPUS MEDICAL SYSTEMS CORP., Tokyo (JP)
Filed by OLYMPUS MEDICAL SYSTEMS CORP., Hachioji (JP)
Filed on Sep. 14, 2023, as Appl. No. 18/368,091.
Application 18/368,091 is a continuation of application No. PCT/JP2021/010283, filed on Mar. 15, 2021.
Prior Publication US 2024/0007263 A1, Jan. 4, 2024
Int. Cl. H04B 3/00 (2006.01); H04L 7/00 (2006.01); H04L 25/00 (2006.01)
CPC H04L 7/0012 (2013.01) 11 Claims
OG exemplary drawing
 
1. An endoscope system in which a scope and a control unit are communicably connected,
wherein the control unit includes
a reference clock generation circuit configured to generate a reference clock, and
a superimposed signal generation circuit configured to generate a transmission signal in which data is multiplexed by changing a duty ratio of the reference clock, and
the scope includes
a high-speed clock generation circuit configured to generate a high-speed clock having a higher frequency than the reference clock,
a counter circuit configured to determine the duty ratio of the transmission signal in synchronization with the high-speed clock, and
a data determination circuit configured to demodulate the data based on the duty ratio determined by the counter circuit,
wherein the high-speed clock generation circuit synchronizes the transmission signal and the high-speed clock by comparing the transmission signal and a frequency-divided clock obtained by dividing the high-speed clock.