Abstract: A state switching device for switching the states of a device by detecting a battery voltage of the device is provided. The device includes a voltage dividing circuit to provide an output voltage in proportion to the battery voltage, and a detection unit which includes a voltage detection module, a comparison module, a control module and a state detection module to obtain the device's state. The voltage detection module produces a digital detection voltage according to the output voltage at normal time intervals, the comparison module detects whether the digital detection voltage is lower than a reference voltage corresponding to the state. If yes, the voltage detection module obtains digital detection voltage at abnormal time intervals. The comparison module compares a predetermined number of digital detection voltages with the reference voltage to produce comparison results. The control module determines whether to maintain the device's state according to the comparison results.

Abstract: The present invention is directed to an endoscope that comprises a telescope, an imaging means, an image sensor for converting optical images produced by the imaging means to electrical signals, and a circuit board for receiving and outputting the electrical signals, the imaging means, image sensor and circuit board being located in the telescope. In some embodiments, the endoscope includes a connector that electrically connects the image sensor and the circuit board to form a first assembly.

Abstract: An amplifier circuit for amplifying audio signal output by an audio source and outputting the amplified audio signal to a speaker is provided. The amplifier circuit includes a peripheral circuit and an amplifier chip including an amplifier, a first, a second, a third resistor, and a fourth resistor. The peripheral circuit includes a fifth and a sixth resistors. The first resistor is connected between a non-inverting input port and an output port of the amplifier, the second resistor is connected between an inverting input port and the output port of the amplifier, the third resistor is connected between the non-inverting input port and the fifth resistor, the fourth resistor is connected between the inverting port and the sixth resistor, the fifth and the sixth resistors are further respectively connected to an anode output port of the audio source and a cathode output port of the audio source.

Abstract: A telephone line monitoring device is connected to a telephone line and adjacent to a telephone device using the telephone line. The telephone line monitoring device includes a rectifying circuit for generating a corresponding direct current voltage according to an effective voltage of the telephone line; a first controller for generating a first control signal when the direct current voltage is lower than a predetermined voltage; a second controller for detecting an operating state of the telephone device and generating a second control signal when the telephone device is operated; a load booster for pulling down the effective voltage of the telephone line when enabled; and a first switch circuit for disabling the load booster whenever receiving the second control signal, and enabling the load booster when receiving the first control signal while not receiving the second control signal. A monitoring method and a telephone device are also provided.

Abstract: A seawater desalinization device includes a container portion and a heat conduction cover covering on the container portion. The container portion defines a receiving chamber and a slot. The receiving chamber is configured for receiving seawater, and the slot is defined around the receiving chamber for receiving fresh water evaporated from the seawater. The heat conduction cover defines a plurality of guiding slots facing the container portion for guiding the fresh water drop into the slot.

Abstract: A seawater desalinization device includes a container portion, a guiding pipe, a plug, a heat conduction cover, a switch, and a connecting pipe. The container portion defines a receiving chamber, a slot, and a through hole communicating with the receiving chamber. The guiding pipe is fixed on the container portion to communicating with the slot. The plug is detachably inserted into the guiding pipe. The heat conduction cover covers on the container portion and sealing the receiving chamber and the slot. The switch is assembled in the container portion to control open or close the through hole upon a seawater level in the container portion. The connecting pipe is inserted into the through hole and a seawater source.

Abstract: A seawater desalinization system includes a container portion, a heat conduction cover, and a heating device. The container portion defines a receiving chamber and a slot. The heat conduction cover covers on the container portion and seals the receiving chamber and the slot. The container portion is heated by the heating device. The heating device can absorb solar energy to heat the seawater under the dark condition. Therefore, the seawater desalinization system can heat the seawater to obtain fresh water continually.

Abstract: A mask includes a support member, a transparent main body, and a fixing member. The support member includes a main portion, a holding portion, and a resisting portion. The main portion defines a receiving slot and a receiving chamber. The receiving chamber is received in the receiving slot, and the receiving chamber is configured for accommodating spices. The holding portion is integrally formed with the main portion. The holding portion extends away from the transparent main body. The resisting portion is positioned on the main portion. The transparent main body is fixed on the main portion and covers the receiving chamber. The fixing member is connected to the main portion.

Abstract: A mask includes a support member, a transparent main body, and a fixing member. The support member includes a main portion, a holding portion, and a resisting portion. The main portion includes a receiving portion mounted thereon for receiving exhaled or expelled material. The holding portion is integrally formed with the main portion. The holding portion extends away from the transparent main body. The resisting portion is positioned on the main portion. The transparent main body is fixed on the main portion. The fixing member is connected the main portion.

Abstract: A mask includes a support member, a transparent main body, and a fixing member. The support member includes a main portion, a holding portion, and a resisting portion. The holding portion is integrally formed with the main portion. The holding portion extends away from the transparent main body. The resisting portion is positioned on the main portion. The transparent main body is fixed on the main portion. The fixing member is connected to the main portion.

Abstract: The invention discloses a connector that comprises an insulation body and one or more conductive terminals within the insulation body. The one or more conductive terminals comprise at least one clamping portion to clamp onto the insulation body. The invention further discloses an endoscope, which comprises a telescope, an imaging means, an image sensor that transforms optical signals from the imaging means into electrical signals and a PCB board that organizes and outputs the electrical signals, the imaging means, image sensor and PCB board being located in the telescope, wherein the endoscope further comprises the connector that electrically connects the image sensor and the PCB board to form a first assembly. The invention further discloses a method to make the connector.

Abstract: An audio input unit, includes an audio capturing unit, a first coupling circuit, a signal filtering circuit, a second coupling circuit, a converting circuit and a codec which are connected in series in that order. The first coupling circuit is used for filtering the direct-current signal, the signal filtering circuit is used for filtering noise from the electrical signal, and the second coupling circuit is used for further filtering the direct-current signal. The converting circuit includes an input port, a first output port and a second output port, when the input port receives the filtered signal, the first output port outputs a signal with the same phase as the filtered signal, the second output port outputs a signal with the reverse phase as the filtered signal, the two output signals have the opposite phase and the same amplitude.

Abstract: An illumination adjusting device for receiving power from a power supply and supplying output voltage to a lighting unit is provided herein. The illumination adjusting device includes a detector for detecting ambient illumination intensity and generating an ambient illumination value according to the ambient illumination intensity; a comparator for comparing the ambient illumination value with a predetermined value, the comparator outputting a first power signal when the ambient illumination value is lower than a predetermined value; an adjustor for adjusting the output voltage according to the first power signal, as a result, light emitted by the lighting unit is controlled within a predetermined illumination intensity range. A related illumination adjusting method is also provided.

Abstract: A Passive Optical Network includes: an Optical Line Terminal, an Optical Distribution Network, and an Optical Network Unit or an Optical Network Terminal, wherein the Optical Line Terminal is adapted to exchange data with the Optical Network Unit or the Optical Network Terminal by using an optical module via the Optical Distribution Network, and the optical module is an optical module sending data in a continuous mode. Further, a method for data communication based on the Passive Optical Network includes: sending data by using an optical module sending data in a continuous mode; receiving the data by an optical module based on a set optical power threshold of data “0” and a set optical power threshold of data “1”.

Abstract: The present invention is directed to an endoscope that comprises a telescope, an imaging means, an image sensor for converting optical images produced by the imaging means to electrical signals, and a circuit board for receiving and outputting the electrical signals, the imaging means, image sensor and circuit board being located in the telescope. In some embodiments, the endoscope includes a connector that electrically connects the image sensor and the circuit board to form a first assembly.

Abstract: The invention discloses a connector that comprises an insulation body and one or more conductive terminals within the insulation body. The one or more conductive terminals comprise at least one clamping portion to clamp onto the insulation body. The invention further discloses an endoscope, which comprises a telescope, an imaging means, an image sensor that transforms optical signals from the imaging means into electrical signals and a PCB board that organizes and outputs the electrical signals, the imaging means, image sensor and PCB board being located in the telescope, wherein the endoscope further comprises the connector that electrically connects the image sensor and the PCB board to form a first assembly. The invention further discloses a method to make the connector.

Abstract: An interface circuit and an electronic device are used for expanding an output port of a micro processing unit. The interface circuit includes an input port electrically connected to the output port of the micro processing unit for receiving a control signals, and a plurality of output ports selectively driven to control external circuits by inputting different values of the control signal at the input port.

Abstract: A testing system for measuring an electronic device includes a main controller for generating a control signal, a signal generator for outputting a predetermined test input signal according to the control signal, an instrument unit having a plurality of instruments, and a testing port having a plurality of probes. The plurality of probes connects corresponding testing points of the electronic device to the signal generator and the instruments. The predetermined test input signal is transmitted to the electronic device via the testing port. The instrument unit processes a test result signal outputted by the electronic device and outputs a result data. The main controller receives the result data and computes whether the result data is within a predetermined range. A related testing method is also provided.