Abstract: A food processor includes a control unit that is operable in accordance with an initial control signal from a switch unit so as to activate a motor unit to operate in a sequence of an initial judgment mode and a food processing mode. The control unit switches operation of the motor unit from the initial judgment mode to the food processing mode upon determining a first target rotary speed in accordance with a motor rotation signal generated by a sensor unit for indicating a rotary speed of the motor unit during operation of the motor unit in the initial judgment mode so as to drive rotation of a cutting blade unit provided in a container to process food items contained in the container. The control unit activates the motor unit to rotate at a second target rotary speed associated with the first target rotary speed during operation of the motor unit in the food processing mode.

Abstract: A method of data storage in an optical storage media under multiple specifications. When a data is provided to store in a data area of the optical storage media under Mount Rainier (M3) specification, a first index of the data area under M3 specification is stored into a first data index area, i.e. an area of M3 file allocation table, of the optical storage media. Further, a conversion of the logical address of the data area from M3 specification to Method Two (M2) specification is proceeded, and a second index of the data area under M2 specification can be obtained and stored into a second data index area, i.e. an area of M2 file allocation table, which is in a general application area (GAA) under M3 specification, of the optical storage media.

Abstract: The present invention is a self-seeded laser diode. The laser diode obtains a gain by itself without using expansive erbium-doped fiber amplifiers. Hence, the cost is reduced and the system is simplified.

Abstract: A blender includes a container mounted removably on a housing for containing food items and provided with a cutting blade unit that is to be driven rotatably by a motor unit when the container is mounted on the housing. A control unit is operable in accordance with an initial control signal from a switch unit so as to activate the motor unit to operate in a judgment mode. The control unit determines food processing conditions in accordance with a motor rotation signal generated by a sensor unit for indicating a rotary speed of the motor unit when the motor unit is operated in the judgment mode. The control unit switches operation of the motor unit from the judgment mode to a food processing mode upon determining the food processing conditions so as to drive rotation of the cutting blade unit to blend the food items contained in the container.

Abstract: Disclosed is a device and method for dynamically adjusting orientation of a satellite antenna carried in a movable carrier, including a satellite tracking system and an adjusting device. The satellite tracking system includes a position processor that receives a group of positioning signals comprising a current coordinate from a group of GPS satellites and retrieve a program signal comprised a preset coordinate among at least one of program satellites, a comparator comparing the current coordinate with a preset coordinate to generate an deviation, and a microprocessor processing the deviation to issue a control signal that is fed to the adjusting device for changing orientation of the antenna to match with that of the program satellite.

Abstract: An auto switch system and method thereof for IP phones and default audio devices. The system may automatically switch voice output of an information apparatus between the IP phone and the audio device according to IP phone usage. Thus, inconvenience caused by the IP phone being set as the default output is overcome. Furthermore, users need not change the settings when using IP phones.

Abstract: Disclosed is a device and method for dynamically adjusting orientation of a satellite antenna carried in a movable carrier, including a satellite tracking system and an adjusting device. The satellite tracking system includes a position processor that receives a group of positioning signals comprising a current coordinate from a group of GPS satellites and retrieve a program signal comprised a preset coordinate among at least one of program satellites, a comparator comparing the current coordinate with a preset coordinate to generate an deviation, and a microprocessor processing the deviation to issue a control signal that is fed to the adjusting device for changing orientation of the antenna to match with that of the program satellite.

Abstract: A blender includes a container mounted removably on a housing for containing food items and provided with a cutting blade unit that is to be driven rotatably by a motor unit when the container is mounted on the housing. A control unit is operable in accordance with an initial control signal from a switch unit so as to activate the motor unit to operate in a judgment mode. The control unit determines food processing conditions in accordance with a motor rotation signal generated by a sensor unit for indicating a rotary speed of the motor unit when the motor unit is operated in the judgment mode. The control unit switches operation of the motor unit from the judgment mode to a food processing mode upon determining the food processing conditions so as to drive rotation of the cutting blade unit to blend the food items contained in the container.

Abstract: The invention relates to a laser system using a multi-longitudinal-mode Fabry-Perot laser diode as an inter-injection light source and a gain cavity formed by other laser diodes of such type so as to achieve the function of fast wavelength switching, so that it is possible to achieve repetitively fast switching of wavelength by varying and controlling the bias voltage of maximum optical gain in said inter-injection type multi-longitudinal-mode Fabry-Perot laser diode so as to achieve three different wavelengths with tuning range of 3.5 nm for a side-mode suppression ratio (SMSR) greater than 19 dB and a response time of wavelength switching in the order of nanosecond.

Abstract: Disclosed is a device for dynamically adjusting orientation of a satellite antenna carried in a movable carrier, including a satellite tracking system and an adjusting device. The satellite tracking system includes a position processor that receives an electromagnetic signal from at least one satellite and retrieve from the electromagnetic signal a satellite coordinate, a comparator comparing the satellite coordinate with a pre-set target coordinate to generate an error, and a microprocessor processing the error to issue a control signal that is fed to the adjusting device for changing orientation of the antenna to match with that of the satellite.

Abstract: An optical monitoring apparatus based on the scanning of the gain profile of erbium-doped fiber amplifiers (EDFA) and applied in a wavelength division multiplexing network has been proposed and experimentally demonstrated. The EDFA with an injected saturated tone can provide variable gain or loss profile by controlling the pump power. The components used in the present optical monitoring apparatus for use in a wavelength division multiplexing network are easily available and cost-effective, valuable for monitoring frequency and power of a WDM optical communication system, and capable of greatly enhancing resolution of monitoring frequency spectrum for the optical fiber network system.

Abstract: Disclosed is a device for dynamically adjusting orientation of a satellite antenna carried in a movable carrier, including a satellite tracking system and an adjusting device. The satellite tracking system includes a position processor that receives an electromagnetic signal from at least one satellite and retrieve from the electromagnetic signal a satellite coordinate, a comparator comparing the satellite coordinate with a pre-set target coordinate to generate an error, and a microprocessor processing the error to issue a control signal that is fed to the adjusting device for changing orientation of the antenna to match with that of the satellite.

Abstract: The invention relates to a laser system using a multi-longitudinal-mode Fabry-Perot laser diode as an inter-injection light source and a gain cavity formed by other laser diodes of such type so as to achieve the function of fast wavelength switching, so that it is possible to achieve repetitively fast switching of wavelength by varying and controlling the bias voltage of maximum optical gain in said inter-injection type multi-longitudinal-mode Fabry-Perot laser diode so as to achieve three different wavelengths with tuning range of 3.5 nm for a side-mode suppression ratio (SMSR) greater than 19 dB and a response time of wavelength switching in the order of nanosecond.

Abstract: A method for recording DVD-R/RW discs uses a recordable DVD player, which supports the DVD-R/RW recording specification, to write the DVD-R/RW discs according to the DVD+VR specification. In this way, the DVD-R/RW discs can be played by players that support the DVD-Video and DVD+VR specifications.

Abstract: An optical monitoring apparatus based on the scanning of the gain profile of erbium-doped fiber amplifiers (EDFA) and applied in a wavelength division multiplexing network has been proposed and experimentally demonstrated. The EDFA with an injected saturated tone can provide variable gain or loss profile by controlling the pump power. The components used in the present optical monitoring apparatus for use in a wavelength division multiplexing network are easily available and cost-effective, valuable for monitoring frequency and power of a WDM optical communication system, and capable of greatly enhancing resolution of monitoring frequency spectrum for the optical fiber network system.

Abstract: A method that utilizes a short sampling interval and a long-pulsewidth laser source to obtain the long sensing range and employs a signal processing technique of decomposing Brillouin spectrum to achieve high spatial resolution, high temperature resolution of the distributed temperature measurement is disclosed. The present method includes the steps of measuring the Brillouin spectra of an optical pulse applying to a sensing fiber and a overlapped area thereof, determining the length that the pulse enters according to the measured Brillouin spectra and a weighting factor and then determining a real Brillouin spectrum profile and a temperature distribution according to Brillouin frequency shifts thereof. For a 9500-m sensing range of standard single-mode fiber and a 100-ns pulsewidth laser source, spatial and positon resolutions of 20 cm and a temperature resolution of 1° C. are simultaneously achieved by using this signal processing method.

Abstract: A method that utilizes a dispersion-shifted fiber having compound compositions with different temperature coefficients in core to simultaneously measure the distributed strain and temperature based on Brillouin frequency shift is disclosed. The present method includes the steps of obtaining mean two peak frequencies in a multi-peak Brillouin spectrum of the dispersion-shifted fiber, determining a temperature change according to the formula of a Brillouin frequency shift of the peak relating to strain and temperature conditions of the fiber, and determining a strain change through the formula. In a 3682-m sensing length of Large-Effective-Area NZ-DS fiber, a temperature resolution of 5° C., a strain resolution of 60 &mgr;&egr; and a spatial resolution of 2 m are achieve simultaneously.

Abstract: A method that utilizes a short sampling interval and a long-pulsewidth laser source to obtain the long sensing range and employs a signal processing technique of decomposing Brillouin spectrum to achieve high spatial resolution, high temperature resolution of the distributed temperature measurement is disclosed. The present method includes the steps of measuring the Brillouin spectra of an optical pulse applying to a sensing fiber and a overlapped area thereof, determining the length that the pulse enters according to the measured Brillouin spectra and a weighting factor and then determining a real Brillouin spectrum profile and a temperature distribution according to Brillouin frequency shifts thereof. For a 9500-m sensing range of standard single-mode fiber and a 100-ns pulsewidth laser source, spatial and positon resolutions of 20 cm and a temperature resolution of 1° C. are simultaneously achieved by using this signal processing method.

Abstract: A method that utilizes a dispersion-shifted fiber having compound compositions with different temperature coefficients in core to simultaneously measure the distributed strain and temperature based on Brillouin frequency shift is disclosed. The present method includes the steps of obtaining mean two peak frequencies in a multi-peak Brillouin spectrum of the dispersion-shifted fiber, determining a temperature change according to the formula of a Brillouin frequency shift of the peak relating to strain and temperature conditions of the fiber, and determining a strain change through the formula. In a 3682-m sensing length of Large-Effective-Area NZ-DS fiber, a temperature resolution of 5° C., a strain resolution of 60 &mgr;&egr; and a spatial resolution of 2 m are achieve simultaneously.