Abstract: A system and method for performing image-based authentication requires users to enter an image-based password in order to access a secure system or network. A user may identify at least one password image, and may enter the system or network if he or she selects each of the password images shown in a group of images on the display. Additionally, the user may designate specific locations for multiple password images on a user interface, and a user may enter the system or network if he or she locates each of the password images in its designated location on the user interface.

Abstract: The invention provides an identity authentication system and a method thereof. Embodiments of the invention provide application, installation, and verification processes of a mobile identification card, and enable a mobile apparatus of a user to be a carrier of the mobile identification card. The mobile identification card can be applied to services related to internal identification of enterprises, groups, or government agencies, and achieve smart and mobile identification. The mobile identification card is provided via an over-the-air mechanism. A mobile enterprise identification card service is provided to one or more enterprises by using a gateway. In addition, in combination with advantages of a dynamic graphics coding technology, a geographic location, data encryption with a key, transaction time recording, and other technologies, a graphic code can be generated for identity authentication. Therefore, highly secure identity authentication can be provided by using a dynamic graphic code.

Abstract: The present invention provides an interface circuit, wherein the interface circuit includes a switching circuit, an over-voltage detection circuit and a control signal generating circuit. In the operations of the interface circuit, the switching circuit is configured to receive an input signal from an input terminal, and selectively transmit the input signal to an internal circuit. The over-voltage detection circuit is configured to detect whether a voltage level of the input signal is greater than a threshold value, and accordingly generate at least one over-voltage signal. The control signal generating circuit is configured to generate a control signal according to said at least one over-voltage signal, to control the switching circuit to be in one of three or more states.

Abstract: A bicycle packaging structure for a bicycle including a bicycle frame is provided. The bicycle packaging structure includes an exhibition box and at least one fixing member. The exhibition box includes a lower plate, a side plate surrounding the lower plate, an accommodating space formed by the lower plate and the side plate, and an exhibition opening at one side of the side plate away from the lower plate. The bicycle frame is accommodated in the accommodating space and mounted on the lower plate by the at least one fixing member. Thus, the bicycle frame may be directly exhibited through the exhibition opening and be sold to eliminate conventional complications of box opening and assembly for exhibition and post-exhibition re-boxing. The bicycle frame is placed in the exhibition box for carrying outdoors to achieve objects of recycling and reducing costs and burden on the environment.

Abstract: An AC-to-DC power converter with a BJT as a power switch can set a base current of the BJT by a current setting resistor which is in the outside of a control integrated circuit. Since an output current and a recovery current of the BJT are injected into a sensing resistor, the AC-to-DC power converter can correctly detect an inductor current thereof from the sensing resistor.

Abstract: A mixed mode compensation circuit for a power converter generate a digital signal according to a reference signal and a feedback signal which is related to the output voltage of the power converter, convert the digital signal into a first analog signal, offset the first analog signal with a variable offset value to generate a second analog signal, and filter out high-frequency components of the second analog signal to generate a third analog signal for stable output voltage of the power converter. The mixed mode compensation does not require large capacitors, and thus the circuit can be integrated into an integrated circuit.

Abstract: A bicycle packaging structure for a bicycle including a bicycle frame is provided. The bicycle packaging structure includes an exhibition box and at least one fixing member. The exhibition box includes a lower plate, a side plate surrounding the lower plate, an accommodating space formed by the lower plate and the side plate, and an exhibition opening at one side of the side plate away from the lower plate. The bicycle frame is accommodated in the accommodating space and mounted on the lower plate by the at least one fixing member. Thus, the bicycle frame may be directly exhibited through the exhibition opening and be sold to eliminate conventional complications of box opening and assembly for exhibition and post-exhibition re-boxing. The bicycle frame is placed in the exhibition box for carrying outdoors to achieve objects of recycling and reducing costs and burden on the environment.

Abstract: A dynamic entrance controlling system (1) includes two wireless signal receiving devices (11), an image capturing device (12) and a host (13). The two wireless signal receiving devices (11) respectively sense a target (2) entering a restrained area and obtain an ID information (ID1) of the target (2), and the host (13) determines a moving direction of the target (2) according to the order of the two wireless signal receiving devices (11) of obtaining the ID information (ID1). If the moving direction matches with a certain condition, the host (13) reads internally a pre-stored image information (I1) of the target (2) according to the ID information (ID1), and triggers the image capturing device (12) to capture a real-time image information (I2) for the target (2). Next, the host (13) compares the two image information (I1, I2) in order to recognize an identity of the target (2).

Abstract: A dynamic entrance controlling system (1) includes two wireless signal receiving devices (11), an image capturing device (12) and a host (13). The two wireless signal receiving devices (11) respectively sense a target (2) entering a restrained area and obtain an ID information (ID1) of the target (2), and the host (13) determines a moving direction of the target (2) according to the order of the two wireless signal receiving devices (11) of obtaining the ID information (ID1). If the moving direction matches with a certain condition, the host (13) reads internally a pre-stored image information (I1) of the target (2) according to the ID information (ID1), and triggers the image capturing device (12) to capture a real-time image information (I2) for the target (2). Next, the host (13) compares the two image information (I1, I2) in order to recognize an identity of the target (2).

Abstract: A mixed mode compensation circuit for a power converter generate a digital signal according to a reference signal and a feedback signal which is related to the output voltage of the power converter, convert the digital signal into a first analog signal, offset the first analog signal with a variable offset value to generate a second analog signal, and filter out high-frequency components of the second analog signal to generate a third analog signal for stable output voltage of the power converter. The mixed mode compensation does not require large capacitors, and thus the circuit can be integrated into an integrated circuit.

Abstract: A light emitting device circuit has one or plural light emitting devices connected in series. A light emitting device driver circuit drives the light emitting device circuit according to a rectified input voltage. The light emitting device driver circuit includes a power switch and a control circuit. When the power switch is conductive, a light emitting device current flows through the light emitting device circuit and the power switch. When the power switch is not conductive, an output capacitor discharges to provide the light emitting device current. The control circuit determines whether the rectified input voltage is lower or not lower than a forward voltage plus a reference voltage according to a voltage at a reverse end of the light emitting device circuit, and control the power switch accordingly.

Abstract: A mobility aid with rehabilitative and guiding functions includes a main body, a processing unit, a guiding module, a detection module, an inertia sensor, a recording module, and an electricity module. A rehabilitation and guiding method includes the steps of: A) constantly projecting a visible light beam to a next-step position of the mobility aid; B) moving the mobility aid to its next-step position under the guidance of the visible light beam; C) constantly emitting an ultrasonic wave to a next-step position of at least one of the user's feet to define a detection area; D) detecting whether the foot is moved into the detection area; E) recording the moving process of any of the steps A through D and notifying a remote device of the moving process; and F) detecting any of the steps A through D and, if an abnormal condition occurs, sending out a warning message.

Abstract: A linear LED driver comprises a transistor having an input terminal coupled to a LED. When the transistor is turned on, the LED is lighted. The linear LED driver further includes a protection circuit for judging whether an instant high voltage variation occurs or not according to at least one of the voltages of a control terminal and an output terminal of the transistor so as to achieve a protection function.

Abstract: A mixed mode compensation circuit for a power converter generate a digital signal according to a reference signal and a feedback signal which is related to the output voltage of the power converter, convert the digital signal into a first analog signal, offset the first analog signal with a variable offset value to generate a second analog signal, and filter out high-frequency components of the second analog signal to generate a third analog signal for stable output voltage of the power converter. The mixed mode compensation does not require large capacitors, and thus the circuit can be integrated into an integrated circuit.

Abstract: A frequency jittering control circuit for a PFM power supply includes a pulse frequency modulator to generate a frequency jittering control signal to switch a power switch to generate an output voltage. The frequency jittering control circuit jitters an input signal or an on-time or off-time of the pulse frequency modulator to jitter the switching frequency of the power switch to thereby improve EMI issue.

Abstract: A driver circuit of a LED luminance device includes: a signal pin; a determining circuit for determining the magnitude of an input signal; an indication signal generating circuit for outputting an indication signal to the signal pin according to the determining result of the determining circuit; an alignment signal generating circuit for generating an alignment signal when triggered by a predetermined edge of a signal at the signal pin; an indication signal detecting circuit for detecting the signal at the signal pin to generate a detection signal; and a control signal generating circuit for generating multiple control signals according to the detection signal to respectively control multiple switching elements in parallel connection with multiple LED devices when triggered by the alignment signal.

Abstract: A mixed mode compensation circuit for a power converter generate a digital signal according to a reference signal and a feedback signal which is related to the output voltage of the power converter, convert the digital signal into a first analog signal, offset the first analog signal with a variable offset value to generate a second analog signal, and filter out high-frequency components of the second analog signal to generate a third analog signal for stable output voltage of the power converter. The mixed mode compensation does not require large capacitors, and thus the circuit can be integrated into an integrated circuit.

Abstract: A mixed mode compensation circuit for a power converter generate a digital signal according to a reference signal and a feedback signal which is related to the output voltage of the power converter, convert the digital signal into a first analog signal, offset the first analog signal with a variable offset value to generate a second analog signal, and filter out high-frequency components of the second analog signal to generate a third analog signal for stable output voltage of the power converter. The mixed mode compensation does not require large capacitors, and thus the circuit can be integrated into an integrated circuit.