Abstract: Methods and systems for determining frames and photo composition within multiple frames are provided. First, a plurality of frames, which are respectively captured with a predefined time interval are obtained. At least one object within at least two of the frames is detected. In some embodiments, a moving speed of the object is calculated according to the positions of the object in the respective frames and the predefined time interval, and candidate frames are selected from the frames according to the moving speed of the object in some embodiments, an overlapped area corresponding to the object within a first frame and a second frame is calculated, and at least one candidate frame is selected according to the overlapped area corresponding to the object. The at least one candidate frame is composed to generate a composed photo.

Abstract: An angle estimation control system of a permanent magnet motor is provided. The angle estimation control system includes a Clarke transform module, a Park transform module, and an angle estimation module. The Clarke transform module generates orthogonal current signals in accordance with motor phase currents. The Park transform module generates a current signal in response to the orthogonal current signals and an angle signal. The angle estimation module generates the angle signal in response to the current signal. The angle signal is related to a commutation angle of the permanent magnet motor. The current signal is controlled to be approximately equal to zero. The angle signal is further coupled to generate three phase motor voltage signals.

Abstract: A wall control interface for power management includes a transmitting circuit that generates a switching signal to control a switch and achieve a phase modulation to a power line signal in response to a transmitting-data. A receiving circuit is coupled to detect the phase of the power line signal for generating a data signal and a receiving-data in response to the phase of the power line signal. The receiving circuit further generates a control signal to control power of a load in accordance with the data signal or the receiving-data. The phase modulation is achieved by controlling a turn-on angle of the power line signal. The switch remains in a turn-on state during the normal condition, which achieves good power and low current harmonic. The phase modulation is only performed during the communication of the power management.

Abstract: Methods and systems for determining frames and photo composition within multiple frames are provided. First, a plurality of frames, which are respectively captured with a predefined time interval are obtained. At least one object within at least two of the frames is detected. In some embodiments, a moving speed of the object is calculated according to the positions of the object in the respective frames and the predefined time interval, and candidate frames are selected from the frames according, to the moving speed of the object. In some embodiments, an overlapped area corresponding to the object within a first frame and a second frame is calculated, and at least one candidate frame is selected according to the overlapped area corresponding to the object. The at least one candidate frame is composed to generate a composed photo.

Abstract: An access control method for a wireless client in a wireless communication system is disclosed. The access control method comprises receiving a distinguish signal from a wireless key distributor when the wireless client approaches the wireless key distributor; activating a application unit of the wireless client upon reception of the distinguish signal, wherein the application unit is associated with the distinguish signal; sending an access information request to the wireless key distributor; receiving access information from the wireless key distributor; configuring the wireless client with the access information; and using the access information to access a wireless access appoint.

Abstract: A back electromotive force (EMF) detector for a motor is disclosed. The back EMF detector includes an upper switch, a lower switch, a current sensing resistor and a first to third resistance providers. The upper and lower switches are controlled by a first and a second control signal respectively. The current sensing resistor coupled between the lower switch and a reference ground voltage. A first terminal of the first resistance provider coupled to the upper switch, and a back EMF detection result is generated at a second terminal of the first resistance provider. The second resistance provider coupled between the reference ground voltage and the first resistance provider. The third resistance provider is coupled between the coupled terminal of the first and second resistance provider and the lower switch. Wherein, the first to the third resistance providers are determined by at least one characteristic parameter of the motor.

Abstract: A method and a circuit for detecting positions for a motor are provided. The circuit includes a control circuit for generating PWM signals, high-side transistors and low-side transistors, resistors and a microcontroller. The high-side transistors and the low-side transistors generate voltage signals configured to drive the motor. The resistors coupled to the low-side transistors generate sensing signals in response to motor currents and back-EMF signals. The microcontroller controls the control circuit. the PWM signals are utilized to control the high-side transistors and the low-side transistor for generating the voltage signals. The high-side transistors are coupled to the input power source. The low-side transistors are coupled to the ground via the resistors. The control circuit determines the motor position in accordance with the sensing signals.

Abstract: A back electromotive force (EMF) detector for a motor is disclosed. The back EMF detector includes an upper switch, a lower switch, a current sensing resistor and a first to third resistance providers. The upper and lower switches are controlled by a first and a second control signal respectively. The current sensing resistor coupled between the lower switch and a reference ground voltage. A first terminal of the first resistance provider coupled to the upper switch, and a back EMF detection result is generated at a second terminal of the first resistance provider. The second resistance provider coupled between the reference ground voltage and the first resistance provider. The third resistance provider is coupled between the coupled terminal of the first and second resistance provider and the lower switch. Wherein, the first to the third resistance providers are determined by at least one characteristic parameter of the motor.

Abstract: An angle estimation control system of a permanent magnet motor is provided. The angle estimation control system includes a Clarke transform module, a Park transform module, and an angle estimation module. The Clarke transform module generates orthogonal current signals in accordance with motor phase currents. The Park transform module generates a current signal in response to the orthogonal current signals and an angle signal. The angle estimation module generates the angle signal in response to the current signal. The angle signal is related to a commutation angle of the permanent magnet motor. The current signal is controlled to be approximately equal to zero. The angle signal is further coupled to generate three phase motor voltage signals.

Abstract: An access control method for a wireless client in a wireless communication system is disclosed. The access control method comprises receiving a distinguish signal from a wireless key distributor when the wireless client approaches the wireless key distributor; activating a application unit of the wireless client upon reception of the distinguish signal, wherein the application unit is associated with the distinguish signal; sending an access information request to the wireless key distributor; receiving access information from the wireless key distributor; configuring the wireless client with the access information; and using the access information to access a wireless access appoint.

Abstract: A wall control interface for power management includes a transmitting circuit that generates a switching signal to control a switch and achieve a phase modulation to a power line signal in response to a transmitting-data. A receiving circuit is coupled to detect the phase of the power line signal for generating a data signal and a receiving-data in response to the phase of the power line signal. The receiving circuit further generates a control signal to control power of a load in accordance with the data signal or the receiving-data. The phase modulation is achieved by controlling a turn-on angle of the power line signal. The switch remains in a turn-on state during the normal condition, which achieves good power and low current harmonic. The phase modulation is only performed during the communication of the power management.

Abstract: A wall control interface for power management includes a transmitting circuit that generates a switching signal to control a switch and achieve a phase modulation to a power line signal in response to a transmitting-data. A receiving circuit is coupled to detect the phase of the power line signal for generating a data signal and a receiving-data in response to the phase of the power line signal. The receiving circuit further generates a control signal to control power of a load in accordance with the data signal or the receiving-data. The phase modulation is achieved by controlling a turn-on angle of the power line signal. The switch remains in a turn-on state during the normal condition, which achieves good power and low current harmonic. The phase modulation is only performed during the communication of the power management.

Abstract: An online networking system and method for depicting views associated with an entity are presented. An entity profile data structure associated with an entity such as a user or a business is created that defines an entity internal view and a plurality of entity external views. The entity internal view includes entity external view controls for defining entity external views. The entity internal view depicts information associated with members and visitors who visit the entity external views in one embodiment. The entity can define an entity external view to be of a type selected from a group of view types consisting of a family, social and business type, and can define an entity external view to have an access level type selected from a group of access level types consisting of public, private and secret in one embodiment. The entity external view controls allow the entity to select tools such as a media album for displaying media such as photographs and video clips, and to create a tool list.

Abstract: An electronic device and a keypad structure thereof are disclosed. The keypad structure includes a first key group, a second key group and a third key group. The second key group is disposed on the left side of the first key group, and the third key group is disposed on the right side of the first key group. Each key area of the second key group is smaller than that of the first key group, and each key area of the third key group is also smaller than that of the first key group.

Abstract: A power management interface is provided and includes a switch, a transmitting circuit, and a receiving circuit. The switch is coupled to an AC power line for controlling a power line signal to a load. The transmitting circuit generates a switching signal to control the switch and achieve a phase modulation to the power line signal in response to a transmitting-data. The receiving circuit is coupled to receive the power line signal for detecting a phase of the power line signal and generating a receiving-data to control power of the load. The receiving-data is generated in accordance with the phase detection of the power line signal and correlated to the transmitting-data.

Abstract: A hand-held electronic device including a body, a touch-sensing display area, and a holding area is provided. The touch-sensing display area located at a surface of the body is divided into several sub-touch-sensing areas disposed at a part of a surrounding region of the touch-sensing display area. The sub-touch-sensing areas have at least one access-sensing region. The access-sensing region is used for sensing a touch-control action so as to render the hand-held electronic device to perform a function corresponding to the touch-control action. The holding area is disposed outside the sub-touch-sensing areas. When a user only intends to hold the hand-held electronic device, the user's hands can put on the holding area and the hand-held electronic device would not perform any corresponding function.

Abstract: A power management interface is provided and includes a switch, a transmitting circuit, and a receiving circuit. The switch is coupled to an AC power line for controlling a power line signal to a load. The transmitting circuit generates a switching signal to control the switch and achieve a phase modulation to the power line signal in response to a transmitting-data. The receiving circuit is coupled to receive the power line signal for detecting a phase of the power line signal and generating a receiving-data to control power of the load. The receiving-data is generated in accordance with the phase detection of the power line signal and correlated to the transmitting-data.

Abstract: A wall control interface for power management includes a transmitting circuit that generates a switching signal to control a switch and achieve a phase modulation to a power line signal in response to a transmitting-data. A receiving circuit is coupled to detect the phase of the power line signal for generating a data signal and a receiving-data in response to the phase of the power line signal. The receiving circuit further generates a control signal to control power of a load in accordance with the data signal or the receiving-data. The phase modulation is achieved by controlling a turn-on angle of the power line signal. The switch remains in a turn-on state during the normal condition, which achieves good power and low current harmonic. The phase modulation is only performed during the communication of the power management.

Abstract: An electronic device and a user interface display method thereof are provided. The electronic device includes a touch sensor and a display. The electronic device organizes a plurality of computer programs and a web browser executable on the electronic device into a virtual book. Each page of the virtual book includes a user interface of one of the computer programs or a web page displayed by the web browser. The electronic device displays one of the pages as a current page on the display so that the user interface or the web page of the current page is accessible to a user of the electronic device. In addition, the electronic device senses movement and/or pressure caused by the user on the touch sensor and interprets the movement and/or the pressure as an operating action of the user on the virtual book.

Abstract: A hand-held electronic device including a body, a touch-sensing display area, and a holding area is provided. The touch-sensing display area located at a surface of the body is divided into several sub-touch-sensing areas disposed at a part of a surrounding region of the touch-sensing display area. The sub-touch-sensing areas have at least one access-sensing region. The access-sensing region is used for sensing a touch-control action so as to render the hand-held electronic device to perform a function corresponding to the touch-control action. The holding area is disposed outside the sub-touch-sensing areas. When a user only intends to hold the hand-held electronic device, the user's hands can put on the holding area and the hand-held electronic device would not perform any corresponding function.