Abstract: An imaging system includes a first camera configured to capture a first video stream of a first tissue surface and a second camera configured to capture a second video stream of a second tissue surface, the first tissue surface opposing the second tissue surface of the tissue. The system also includes a video processing device configured to receive the first video stream from the first camera and the second video stream from the second camera and modify at least one the first video stream or the second video stream based on one the first video stream or the second video stream to generate a 3D volume having a modified video stream. The system further includes a first screen coupled to the video processing device and configured to display the 3D volume with the modified video stream.

Abstract: The present invention is a frequency and phase locked loop (FPLL) synthesizer having a frequency-locked loop (FLL) operating mode and a phase-locked loop (PLL) operating mode. The FLL operating mode is used for rapid coarse tuning of the FPLL synthesizer and is followed by the PLL operating mode for fine tuning and stabilization of the frequency of an output signal from the FPLL synthesizer. The FPLL synthesizer includes a variable frequency oscillator, which is controlled by FLL circuitry during the FLL operating mode or by PLL circuitry during the PLL operating mode. The FLL circuitry includes frequency division circuitry for reducing the frequency of the output signal, frequency detection circuitry for measuring the frequency error of the frequency reduced output signal, and a loop filter to control the bandwidth of an FLL control loop formed by the FLL circuitry and the variable frequency oscillator.