A valve connector has a tubular body, a connection head, and an annular seal. The canister includes a first space configured to collect the liquid from the tissue site and a filter having a frame and a non-planar filter element. A high-level external matrix having high-level external transparency data indicating transparency of pixels is accessed if the internal transparency data indicates the macro block includes a window boundary. A computing device that receives the input from the sensor controller may then generate an output based on the composite signal, which may include processing the composite signal to combine the separate signals from the different sensors, such as to provide a stereo image output, for example. In addition, an output terminal of the transfer signal generation circuit is directly connected to a first input terminal of the flip flop circuit in the next stage.