Abstract: A phase control unit compares a phase of a display synchronization signal with a phase of a clock signal generated from a clock signal generated by an imaging clock generating unit, and controls oscillation of the imaging clock generating unit based on a result of the comparison. A drive signal generating unit generates a drive signal that drives a CMOS sensor based on a multiplication clock signal synchronized to the clock signal.

Abstract: A CMOS sensor converts optical information into an electric signal, and outputs the converted electric signal as an image signal. An imaging clock generating unit generates an imaging clock acting as a source of a drive signal that drives the CMOS sensor. A drive signal generating unit generates an imaging synchronization signal and a drive signal based on the imaging clock. A display clock generating unit generates a display clock. A display synchronization signal generating unit generates a display synchronization signal based on the display clock. A phase comparing unit compares a phase of the imaging synchronization signal with a phase of the display clock, and controls oscillation of the display clock generating unit based on a result of the comparison.

Abstract: A phase comparing unit compares a phase of an imaging-side synchronization signal with a phase of a display-side clock, and controls oscillation of a display-side clock generating unit based on a result of the comparison. A display timing adjusting unit receives a video signal output from an endoscope at a timing based on the imaging-side synchronization signal and adjusts a synchronization timing of the received video signal to a synchronization timing based on a display-side synchronization signal.

Abstract: An electronic endoscopic apparatus includes an endoscopic scope and an image processing processor. The endoscopic scope includes a solid-state imaging device, an imaging-side multiplying unit, and an imaging synchronization signal generating unit. The image processing processor includes a display clock generating unit, a monitor synchronization signal generating unit, a master imaging clock generating unit, a processor-side multiplying/dividing unit, a phase-comparison oscillation control unit, and a display timing adjustment unit.

Abstract: An electronic endoscopic apparatus includes an endoscopic scope and an image processing processor. The endoscopic scope includes a slid-state imaging device, an imaging-side multiplying unit, and an imaging synchronization signal generating unit. The image processing processor includes a display clock generating unit, a monitor synchronization signal generating unit, a master imaging clock generating unit, a processor-side multiplying/dividing unit, a phase-comparison oscillation control unit, and a display timing adjustment unit.

Abstract: A CMOS sensor converts optical information into an electric signal, and outputs the converted electric signal as an image signal. An imaging clock generating unit generates an imaging clock acting as a source of a drive signal that drives the CMOS sensor. A drive signal generating unit generates an imaging synchronization signal and a drive signal based on the imaging clock. A display clock generating unit generates a display clock. A display synchronization signal generating unit generates a display synchronization signal based on the display clock. A phase comparing unit compares a phase of the imaging synchronization signal with a phase of the display clock, and controls oscillation of the display clock generating unit based on a result of the comparison.

Abstract: A phase control unit compares a phase of a display synchronization signal with a phase of a clock signal generated from a clock signal generated by an imaging clock generating unit, and controls oscillation of the imaging clock generating unit based on a result of the comparison. A drive signal generating unit generates a drive signal that drives a CMOS sensor based on a multiplication clock signal synchronized to the clock signal.

Abstract: The image processor includes a display oscillation circuit that generates a display clock, and a monitor synchronization signal generating part that generates a monitor display synchronization signal based on the display clock. The endoscope includes an imaging oscillation circuit that generates an imaging clock, pixels that are driven based on the imaging clock, converts optical information into electrical signals and outputs the electrical signals as a digital data of a serial form, and a phase comparator that compare the phase of the monitor display synchronization signal with the imaging clock, and control the oscillation of the imaging oscillation circuit.

Abstract: An imaging device is installed on a scope distal portion, and captures an image based on an imaging clock. An image processor portion performs image processing on the image captured by the imaging device, and displays the corresponding image based on a display clock on a monitor. A scope cable portion transmits data between the scope distal portion and the image processor portion. A clock oscillator generates a master clock. A first multiplying/dividing circuit multiplies and/or divides the master clock by (natural number/natural number), and generates a transmission clock whose frequency is lower than that of the imaging clock and is (natural number) times the frequency of a vertical synchronization signal.

Abstract: A phase comparing unit compares a phase of an imaging-side synchronization signal with a phase of a display-side clock, and controls oscillation of a display-side clock generating unit based on a result of the comparison. A display timing adjusting unit receives a video signal output from an endoscope at a timing based on the imaging-side synchronization signal and adjusts a synchronization timing of the received video signal to a synchronization timing based on a display-side synchronization signal.

Abstract: Image-pickup sections and an image-communicating/processing section 138 are connected by a single bus. Following the output of the image data, an output-controlling section in one of the image-pickup sections outputs an image-data-ending pattern, which indicates the end of outputting the image data, to a bus. An ending-pattern-detecting section in another image-pickup section detects the image-data-ending pattern, and outputs an image-pickup-operation-starting signal. The another image-pickup section starts an image-pickup operation and output of the image data based on the image-pickup-operation-starting signal.

Abstract: Image-pickup sections and an image-communicating/processing section 138 are connected by a single bus. Following the output of the image data, an output-controlling section in one of the image-pickup sections outputs an image-data-ending pattern, which indicates the end of outputting the image data, to a bus. An ending-pattern-detecting section in another image-pickup section detects the image-data-ending pattern, and outputs an image-pickup-operation-starting signal. The another image-pickup section starts an image-pickup operation and output of the image data based on the image-pickup-operation-starting signal.

Abstract: An image coding apparatus includes a distortion determining unit, a plurality of compression operating units, and a selecting unit. The distortion determining unit determines an amount of optical distortion of an image associated with a set of input image data. The plurality of compression operating units has different compression and coding characteristics from each other. Each of the plurality of compression operating units is configured to convert at least a part of the set of input image data into a corresponding set of compressed and coded data. The selecting unit selects one of the plurality of compression operating units with reference to the result of determination by the distortion determining unit.