Abstract: The present invention provides a battery charging control circuit to charge batteries in phases. In a first charging phase the charging circuit charges the batteries with a large current and at a second charging phase the charging circuit charges the batteries with a much smaller current. The charging circuit includes a current detection circuit which detects a charge current and provides a detection voltage proportional to the charge current. The battery charging control circuit also includes an amplifier circuit to amplify the detection voltage and a comparison module compares the amplified detection voltage with a reference voltage. If the amplified detection voltage is lower than the reference voltage, the comparison module outputs a switch signal to a control module. The control module controls a charging module to charge the battery in a trickle mode when receiving the switch signal.

Abstract: A method used in a digital photo frame (DPF) with television function is provided. The DPF has a DPF mode for playing multimedia files stored in a storage and a television (TV) mode for playing TV programs received by a TV receiving module. The method includes: fetching TV program information from a TV program schedule when the DPF is in the DPF mode; detecting whether at least one TV program is airing soon or currently aired at the current time; displaying a TV listing menu prompt containing information on the at least one “airing soon” or “currently aired” TV program; receiving a mode switching signal and changing the operational mode of the DPF to the TV mode; and receiving and playing one of the “airing soon” or “currently aired” TV programs.

Abstract: An illumination device includes a light sensor, a light-emitting unit, a switch unit and a processing unit. The light sensor is configured for sensing ambient light intensity and providing results based on the sensed light intensity. The switch unit is configured for controlling the electrical connection between the light-emitting unit and a power unit. The processing unit includes a control module and a light adjusting module. The controlling module is configured for turning off the switch unit to cut off the electrical connection between the light-emitting unit and the power unit during the sensing of the light intensity. The light adjusting module is configured for adjusting the brightness of the light-emitting unit according to the results provided by the light sensor. A related method is also provided.

Abstract: A method with television (TV) tuning function applied on a digital photo frame (DPF) is provided. The method includes: fetching a prompt time of at least one particular TV program; determining whether a prompt time of a particular TV program is about to arrive or has already arrived at the current time; fetching a prompt signal of the particular TV program whose prompt time is about to arrive or has already arrived, and outputting the prompt signal to prompt a particular TV program is being aired or about to air; switching the DPF from the DPF mode to a TV mode and providing the channel parameter of the particular TV program upon receiving a mode switching signal during the outputting of the prompt signal; and; and receiving and playing the particular TV program according to the channel parameter. A related DPF is also provided.

Abstract: A digital photo frame (DPF) includes a power source, a display panel, a light detector, a motion detector, a processing unit, and a power management unit. The light detector is configured to detect the ambient brightness. The motion detection unit is configured to detect whether anyone is around. The processing unit is connected to the light detector and the motion detector. If the motion detector detects someone is around the DPF and the light detector detects the ambient brightness is below a predetermined value, the processing unit controls the power management unit to provide power to the display panel.

Abstract: An electronic device capable of controlling light-emitting diode (LED) bright is provided. The electronic device includes a signal producing unit for producing an operation signal; a Micro Control Unit (MCU) configured for outputting a normal brightness control signal according to the operation signal, and outputting a ultra brightness control signal according to the operation signal when an actual idle time of the electronic device reaches or exceeds a predetermined idle time; a pulse current control unit for controlling an output current according to the normal brightness control and the ultra brightness control signal; and a LED illuminator array for emitting light based on the output current. The MCU terminates the output of the ultra brightness control signal when an actual time of outputting the ultra brightness control signals reaches a predetermined time, and then the LED illuminator array resumes its normally bright. A control method is also provided.

Abstract: The present disclosure provides a battery charging control circuit. The charging control circuit includes: a constant-current charging unit and a trickle charging unit. The charging control circuit further includes a branch switch, a control unit, and a detection unit. The branch switch is connected between a power source and the rechargeable battery for enabling or disabling the constant-current charging unit. The control unit is between the constant-current charging unit and the branch switch for controlling the branch switch. The detection unit is used to detect a state of the rechargeable battery. If the detection unit detects the state of the rechargeable battery is correspond to a predetermined state, then the control unit controls the branch switch to disable the constant-current charging unit and enable the trickle charging unit.

Abstract: A method for outputting multimedia files and broadcast contents of a selected television (TV) channels on the DPF in a picture-in-picture (PIP) output mode is provided. The method includes: starting the PIP output mode when the DPF plays multimedia files under a DPF mode; defining a PIP region on the DPF; receiving broadcasts of a selected TV channel; and outputting the multimedia files and the broadcast contents of the selected TV channel in the PIP output mode. A related DPF is also provided.

Abstract: The present invention provides a charging control circuit for a rechargeable battery. The charging control circuit includes: a constant-current charging unit and a trickle charging unit. The charging control circuit further includes a branch switch, a detection switch, a control unit, and a detection unit. The branch switch is connected between a power source and the rechargeable battery for enabling or disabling the constant-current charging unit, the detection switch is turned on or off depending on the enable or disable state of the constant-current charging unit. The control unit is connected between the detection switch and the branch switch for controlling the branch switch to turn on or off depending on the off or on state of the detection switch.

Abstract: A method used in a digital photo frame (DPF) with television (TV) tuning function is provided. The method includes: receiving search parameters input by users during a DPF mode of the DPF; searching in a pre-stored TV program schedule to find TV programs matched the search parameters; determining whether any of the TV programs matched the search parameters is on or about to start at the current time; displaying a program list showing information at least on the “currently on” or “about to start” TV programs among the matched TV programs; switching the DPF from the DPF mode to a TV mode if a “currently on” or “about to start” TV program is selected to play; and receiving and playing the selected TV program. A related DPF is provided.

Abstract: A displaying device includes an input unit, a region defining unit, a content allocating unit, an obtaining unit, a display controlling unit and a display unit. The region defining unit defines regions by incorporating one or more unit regions in each of the regions according to users' selections and generates region defining information. The content allocating unit allocates contents for the regions according to the users' selections and generates content allocating information. The obtaining unit obtains the region defining information, the content allocating information, and contents according to the content allocating information, and then transmits the information and contents to the display controlling unit. The display controlling unit splits a display area of the display unit into the regions defined by the region defining unit and displays the contents in the regions correspondingly according to the content allocating information. Related methods are also provided.

Abstract: A sound signal generator testing apparatus is provided. The apparatus includes a hermetic seal (2), a sound signal input unit (4), and at least a noise suppression unit (5). The sound signal input unit is for receiving sound signals transmitted from a sound signal generator (1) under testing. Each noise suppression unit includes a sound signal input unit, a low pass filter, an inverter, and an output. The sound signal input unit is for receiving sound signals. The low pass filter is for filtering the sound signals by passing the low frequencies of the sound signals that are below a predetermined value. The inverter is for inverting phases of the sound signals transmitted from the low pass filter and producing inverted sound signals. The output unit is placed behind the sound signal input unit for outputting the inverted sound signals.

Abstract: A battery overheating protection circuit includes a thermal resistor samples the temperature of the battery and converts the temperature into a temperature voltage, a comparison circuit compares the temperature voltage with a reference voltage for judging whether the temperature of the battery is higher than the maximum reference temperatures temperature or not. If yes, the comparison circuit outputs a protection signal to drive a charging module to stop charging the battery in the charging process, and to cut off the conducting path to draw power from the battery in the discharging process. The present invention sets two different maximum reference temperatures during charging process and discharging process by a reference voltage module, which makes the maximum allowable discharging temperature is higher than the maximum allowable charging temperature.

Abstract: A light-emitting diode (LED) string is provided. The LED string includes a power plug configured for connecting with a power source to power the LED string; one or more LED sockets configured for electrically connecting with the power plug; one or more LEDs configured for being installed on and electrically connecting with the LED sockets; and a control module configured for being electrically connected with anyone of the LED sockets. The control module includes a control circuit, an input terminal and an output terminal, the control circuit electrically connects with one of the LED sockets via the input terminal and the output terminal and controls a current flowing through the LED string to change from a first value to a second value, thereby controlling the LED string to light.

Abstract: An illumination device includes a light sensor, a light-emitting unit, a switch unit and a processing unit. The light sensor is configured for sensing ambient light intensity and providing results based on the sensed light intensity. The switch unit is configured for controlling the electrical connection between the light-emitting unit and a power unit. The processing unit includes a control module and a light adjusting module. The controlling module is configured for turning off the switch unit to cut off the electrical connection between the light-emitting unit and the power unit during the sensing of the light intensity. The light adjusting module is configured for adjusting the brightness of the light-emitting unit according to the results provided by the light sensor. A related method is also provided.

Abstract: A power source selection circuit includes an external power port and a battery compartment, which are used to connect to an external power source and a battery module, respectively. The power source selection circuit further includes a selection switch including a control terminal connected to the external power port, and a first path terminal connected to the battery compartment. A first unidirectional switch connects a second path terminal of the selection switch to a power output port. A second unidirectional switch connects the external power port to the output terminal. When the external power port is connected to the external power source, the control terminal of the selection switch is at a high voltage and the selection switch is cut off accordingly, thereby the path from the battery module to the power output port is cut off and the external power source provides power to the output port.

Abstract: An input device includes a power unit, a power switch unit, a processing unit, and an input unit. The power switch unit includes a first switch for supplying power to the processing unit when actuated; the input unit is connected with the processing unit and the power switch unit and is configured for generating input signals that is transmitted to the processing unit and further used for controlling the first switch; and the processing unit is configured for receiving the input signal from the input unit, keeping the first switch switched on during a time period, and performing a task corresponding to the input signal during the time period.

Abstract: An audio signal switcher includes a jack switcher and a plug switcher. The jack switcher includes an audio jack and a first USB port. The first USB port includes a first data pin, a second data pin, a power pin, and a ground pin. The audio jack includes a left track segment, a right track segment, and a ground segment, which are isolated coupled to at least three pins of the first USB port. The plug switcher includes an audio plug and a second USB port. The audio plug includes a left track segment and a right track segment which are coupled to a first data pin and a second data pin of the second USB port, respectively. The plug also includes a ground segment divided into a left ground ring and a right ground ring which are connected together to couple to a ground pin of the USB port.

Abstract: An audio signal switcher includes a jack switcher and a plug switcher. The jack switcher includes at least two audio jacks and a first USB port. The first USB port includes a first data pin, a second data pin, a power pin, and a ground pin. Each of the audio jacks includes a left track segment, a right track segment, and a ground segment, which are electrically isolated coupled to at least three pins of the first USB port. The plug switcher includes an audio plug and a second USB port. The second USB port also includes a data pin, a second data pin, a power pin, and a ground pin. The audio plug also includes a left track segment, a right track segment, and a ground segment, which are electrically isolated coupled to at least three pins of the second USB port.

Abstract: An audio signal switcher includes a jack switcher and a plug switcher. The jack switcher includes an audio jack and a first USB port. The audio jack includes a left track segment and a right track segment which are coupled to a first data pin and a second data pin of the first USB port, respectively. The jack includes a ground segment divided into a left ground ring and a right ground ring which are connected together to couple to a ground pin of the USB port. The plug switcher includes an audio plug and a second USB port. The second USB port also includes a data pin, a second data pin, a power pin, and a ground pin. The audio plug also includes a left track segment, a right track segment, and a ground segment, which are isolated coupled to at least three pins of the second USB port.