Patent ID: 11903564
Assignee: DEPUY SYNTHES PRODUCTS, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC A  H | IPC A  H

Claim 19:
20. An endoscopic system for use in a light deficient environment comprising:
an endoscope comprising an image sensor, wherein the image sensor comprises a plurality of bidirectional data pads;
a control circuit in electronic communication with the image sensor;
wherein electronic communication through each of the bidirectional data pads is performed in a frame period, wherein the frame period is defined in four phases comprising:
a first phase where non-pixel data is issued from the image sensor through the bidirectional data pads;
a second phase during which internal timing signals, synchronization data, and readout of pixel data is output from the image sensor through the bidirectional data pads;
a third phase where non-pixel data is issued from the image sensor through the bidirectional data pads; and
a fourth phase during which image sensor configuration data and commands are received by the image sensor through the bidirectional data pads;

wherein the control circuit comprises a phase locked loop to lock an incoming data frequency;
wherein the locking the incoming data requires data transitions for the phase locked loop to converge, wherein a minimum number of transitions is specified for locking and re-locking along with a maximum number of consecutive allowed bits without transition is specified.