Abstract: A method of recycling polyester fabric includes following steps. A polyester fabric including polyethylene terephthalate and dyes is provided. An extraction process including using ethylene glycol as an extraction solvent, immersing the polyester fabric in the extraction solvent, and extracting under a temperature of 80° C. to 180° C. is performed to remove the dyes from the polyester fabric. A depolymerization process including using a chemical depolymerization solution to depolymerize the polyester fabric treated with the extraction process to obtain a product including BHET is performed. The chemical depolymerization solution is ethylene glycol. A purification process is performed to remove impurities of the product obtained by the depolymerization process and to obtain a purified BHET. A solvent recycling process is performed.

Abstract: A broadband measurement system and a measurement method for broadband property are provided. The signal measurement apparatus is used to transmit a measuring signal belonging to a first frequency domain from its measuring port. Two ports of the signal converter are used to connect with two measuring ports of the signal measurement apparatus. The first passive mixer of the signal converter is configured as bidirectional, and the second passive mixer of the signal converter is configured as bidirectional. Two mixers are used to convert the signals from the first frequency domain into a second frequency domain, and convert the signals from the second frequency domain into the first frequency domain.

Abstract: A broadband measurement system and a measurement method for broadband property are provided. The signal measurement apparatus is used to transmit a measuring signal belonging to a first frequency domain from its measuring port. Two ports of the signal converter are used to connect with two measuring ports of the signal measurement apparatus. The first passive mixer of the signal converter is configured as bidirectional, and the second passive mixer of the signal converter is configured as bidirectional. Two mixers are used to convert the signals from the first frequency domain into a second frequency domain, and convert the signals from the second frequency domain into the first frequency domain.

Abstract: An optical and electrical hybrid beamforming transmitter, receiver, and signal processing method are provided. The transmitter includes, but is not limited to, two photoelectric converters, two adjusting circuits, and an antenna array. The photoelectric converter converts an optical signal into an initial electric signal, respectively. The adjusting circuit is coupled to the photoelectric converter, and are adapted for delaying the initial electric signal according to an expected beam pattern formed by the antenna array, respectively, to output an adjusted electric signal. The antenna array includes two antennas that are coupled to the adjusting circuit. The antenna radiates electromagnetic wave according to the adjusted electric signal. Accordingly, a phase of the signal may be adjusted, and the number of the elements may be reduced.

Abstract: An optical and electrical hybrid beamforming transmitter, receiver, and signal processing method are provided. The transmitter includes, but is not limited to, two photoelectric converters, two adjusting circuits, and an antenna array. The photoelectric converter converts an optical signal into an initial electric signal, respectively. The adjusting circuit is coupled to the photoelectric converter, and are adapted for delaying the initial electric signal according to an expected beam pattern formed by the antenna array, respectively, to output an adjusted electric signal. The antenna array includes two antennas that are coupled to the adjusting circuit. The antenna radiates electromagnetic wave according to the adjusted electric signal. Accordingly, a phase of the signal may be adjusted, and the number of the elements may be reduced.

Abstract: The present invention discloses a multimedia bookmark method and a system thereof. The method of the present invention comprises steps: providing a plurality of digital annotations for an information object; creating a bookmark containing an ordered set organized according to a time relativity, a file relativity or a user-defined attribute of the digital annotations; and presenting the bookmark and the information object corresponding to the bookmark. Thereby, the present invention provides complete, meaningful and multi-aspect bookmarks, enabling users to easily understand and conveniently use the annotations.

Abstract: A laser system for operation at elevated temperatures with minimal cooling requirements. The laser system comprises a laser media having first and second optical ends and an input port. The laser system further comprises at least one high-temperature laser diode which optically communicates with the laser media and is operative to generate a source beam of light which is transmitted into the input port of the laser media. Optically communicating with the first optical end of the laser media is at least one reflector, while optically communicating with the second optical end of the laser media is at least one optical coupler. The laser media, the reflector and the optical coupler are configured to form a laser resonator operative to generate a laser beam which is transmitted through the optical coupler.