Abstract: An expandable capsule endoscope includes a shell, a membrane and a bag. Inside the shell are a first compartment and a second compartment, and the membrane is disposed between the first compartment and the second compartment. The bag is connected outside the shell. There is a first substance and a second substance respectively disposed in the first compartment and the second compartment. When the membrane is ruined and broken by a heating energy, the first substance and the second substance react to produce a gas filling the bag. The expandable capsule endoscope is applicable to examine an organ with wider diameters and advantageous to capture images of the organ thus providing better reliability and utility.

Abstract: The present invention provides a capsule endoscope and a capsule endoscopy system. The capsule endoscope includes a power supply module, an image function module and a power control module. The image function module is configured to capture the image outside the capsule endoscope. The power control module is electrically connected to the power supply module and includes an electronic switch. The power control module controls the electronic switch according to a predetermined condition to control the electric power provided from the power supply module to the image function module. By this configuration, the power control module is able to suspend the power supply until the capsule endoscope reaches the specific location in the digestive tract, and then starts the power supplying to enable the successive image inspection of the capsule endoscope. Therefore, the electric power is conserved to enable the inspection of the end portion of digestive system of the capsule endoscope.

Abstract: The present invention provides an expandable capsule endoscope and an expandable capsule endoscopy system thereof. The expandable capsule endoscope is swallowed to provide the image inspection function of the digestive tract. The expandable capsule endoscope includes an endoscopy function module, an expandable structure and an expansion function module. The endoscopy function module is configured to capture the image outside the expandable capsule endoscope. The expandable structure covers the endoscopy function module. The expansion function module is disposed inside the expandable structure and configured to control the expansion of the expandable structure according to an expansion signal. Therefore, the expandable capsule endoscope can expand itself to a volume to stretch and flatten the wrinkles or folds of the intestine wall so as to facilitate image capturing and maintain the orientation of the expandable capsule endoscope.

Abstract: The present invention relates to a signal power combiner with dynamic phase compensation, which uses a plurality of phase shifters to receive a first input signal and a second input signal, and shift the phases of the first and second input signals. A detection unit detects the phases of the first input signal and the second input signal, produces a compensation signal, and transmits to the plurality of phase shifters for shifting the phases of the first input signal and the second input signal. A combiner receives the compensated first and second input signals, combines the first input signal and the second input signal, and produces an output signal. Thereby, the transmission quality of signals is improved.

Abstract: An image data compression method is disclosed. Firstly, check a variance between a first image data and a second image data for comparing the variance with a threshold value. When the variance is smaller than a threshold value, compare the first image data with the second image data to generate a motion vector and compress the motion vector. Then calculate the first image data and the second image data according to the motion vector so as to get an offset value of the motion vector. Next, encode the offset value of the motion vector, compress the offset value of the motion vector, and encode as well as compress the first image data. Thus the compression ratio is improved and image distortion is avoided.