Abstract: An Audio/Video (A/V) receiving device includes a Radio Frequency (RF) receiving module configured to receive A/V data from an A/V transmitting device through a first frequency band, an infrared (IR) module configured to receive a power control signal from a remote control device, a wireless receiving module configured to communicate with a wireless transmitting module of the A/V transmitting device through a second frequency band, and a microcomputer configured to turn on power of the A/V receiving device according to the power control signal received from the remote control device and to transmit the power control signal to the wireless transmitting module through the wireless receiving module.

Abstract: Techniques for presenting content by a voice-controlled device are described. In an example, the voice-controlled device is operatively coupled to a presentation device and supports dual mode functionalities. In a first mode, the voice-controlled device sends content for presentation at the presentation device. In a second mode, the voice-controlled device presents the content at a presentation interface of the voice-controlled device. Based on speech input from a user indicating an issue with a content presentation in the first mode, the voice-controlled device switches to the second mode and presents a message at the presentation interface indicating that subsequent content presentations would be presented at this interface. The voice-controlled device remains in the second mode until receiving additional speech input necessitating a switch to the first mode.

Abstract: A method for managing streaming of a digital content item within a multimedia content reader terminal, from a communication network. The multimedia content reader terminal is able to be a content source of a rendering terminal. The rendering terminal has a plurality of selectable digital content sources. The method includes the following steps which are executed when the content reader terminal is selected as digital content source, called first source: detecting, during reading of a first content item by the reader terminal, selection of a source, called second source, other than the first source; reading and rendering a second content item originating from the second source instead of the first content item; and the detection step triggering a step of modifying the operation of the reader terminal in connection with the reading of the first content item.

Abstract: An Audio/Video (A/V) receiving device may include a display, a Radio Frequency (RF) receiving module configured to receive an RF packet from an A/V transmitting device, the RF receiving module including a plurality of antennas, and a microcomputer configured to obtain a distance between the A/V transmitting device and A/V receiving device and when the obtained distance is changed, display a first message indicating that a number of antennas to be turned among the plurality of antennas is changed according to the change of the distance.

Abstract: A switching controller for the generation of a plurality of DC voltages includes an auxiliary secondary circuit in addition to a primary circuit and at least two main secondary circuits. Only the auxiliary secondary circuit is controlled by a control circuit. The auxiliary secondary circuit operates in a virtually powerless manner, wherein the time constant of a parallel circuit has a third output capacitor and an auxiliary load resistor is smaller than the average time constants of at least the first and second main secondary circuits, which are defined by the output capacitors thereof and the average rating values of the load resistors to be connected.

Abstract: An electronic apparatus and a charging/discharging management method thereof are provided. The method entails disabling a charging/discharging path of a battery provided by the electronic apparatus and driving the electronic apparatus to enter a sleep mode according to a sleep mode control command, so as to ensure that the battery cannot supply power to the electronic apparatus through the charging/discharging path.

Abstract: A speedy discharging circuit is applied to a power supply. The speedy discharging circuit is electrically connected to the power supply. The power supply includes a power output side and an output side capacitor. The output side capacitor is electrically connected to the power output side. The speedy discharging circuit includes an energy consuming unit, a switch unit and a switch control unit. The energy consuming unit is electrically connected to the power output side and the output side capacitor. The switch unit is electrically connected to the energy consuming unit. The switch control unit is electrically connected to the switch unit. When the switch control unit receives a sleep signal, the switch control unit turns on the switch unit, so that the output side capacitor discharges to the energy consuming unit.

Abstract: A power adaptor to supply power for a portable device has an input circuit (21) for receiving mains input power, a power switch device (25), a power inductance (24) and an output circuit (22) coupled to the power inductance to provide the supply power for the portable device, and a controller (26) for controlling the power switch device according to a supply power requirement of the portable device. The adaptor has a measurement inductance (27) magnetically coupled to the power inductance, and the controller comprises a measurement input (28) for detecting a measurement signal indicative of a magnetic state of the power inductance. The controller detects the supply power requirement based on the magnetic state in response to a controlling of the power switch device via the controller. Advantageously different portable devices can be supplied by appropriate power.

Abstract: A control circuit controlling the driving of a switching device includes an under voltage lock out circuit stopping the operation of the control circuit when a power supply voltage supplied from the auxiliary winding of an insulating transformer becomes lower than a predetermined power supply lower limit voltage, an FB voltage decision circuit stopping the driving of the switching device when a feedback voltage indicating the state of a load becomes lower than the predetermined threshold value, a flip-flop brought into a set state by an output of the FB voltage decision circuit and a reset state when the power supply voltage exceeds the voltage ensuring the normal operation of the control circuit, and a switching circuit to set the power supply lower limit voltage in the under voltage lock out circuit, lower than that of the normal operation when the flip-flop is set.

Abstract: A switching power conversion circuit having a two-stage power circuit topology and capable of performing power factor correction is disclosed. In a case that the electrical energy of the switching power conversion circuit needs not to be provided to the system circuit, for example the load and the electronic device fails to be operated, the switching power conversion circuit will be adaptively disabled. As a consequence, the switching power conversion circuit could achieve a power-saving purpose. Moreover, the switching power conversion circuit could be applied to a power supply. When the electronic device is not in use, the power supply has reduced power consumption, thereby achieving a power-saving purpose.

Abstract: Embodiments of the present invention comprise systems, methods and devices for display-mode-dependent adjustment of image code values.

Abstract: Embodiments of the present invention comprise systems, methods and devices for increasing the perceived brightness of an image. In some embodiments this increase compensates for a decrease in display light source illumination.

Abstract: In a normal mode, the power supply is fed back in a close loop, but in a power saving mode, the power supply is fed back in an open loop. When it is detected that the power supply is continuously fed back in the open loop and in a substantially zero output status, the power supply circuit enters a power down status. If the back-stage circuit needs power supply again, then the feedback is switched to the close loop and the power supply circuit enters the normal mode.

Abstract: Embodiments of the invention provide a power supply unit that operates in a standby mode and in a normal mode. The power supply unit comprises a first power supply providing output voltages during the standby mode and a second power supply providing output voltages during the normal mode. A pre-converter provides a stabilized supply voltage for the first and second power supply. The pre-converter operates as an up-converter during the normal operation mode and is switched off during the standby mode together with the second power supply.

Abstract: A power supply has first and a second switch-mode power supply (SMPS) units, which both contain a transformer having a primary winding and at least one secondary winding, and a driver stage. The power supply furthermore has a normal operating mode, in which both SMPS units are in operation, and a standby operating mode, in which the first SMPS unit is switched off by a control voltage. In the standby mode, the control voltage is also used to reduce the switching frequency of the second SMPS unit, for example by means of a connection, which reduces the oscillation frequency of the oscillator of the second driver stage. In a preferred exemplary embodiment, the output of a first driver stage is furthermore connected via a series circuit to the oscillator input of a second driver stage, for synchronization purposes.

Abstract: A method for controlling a video display device having multiple signal sources, which comprises the steps of: detecting whether a synchronous signal is input to a microcomputer; detecting a signal source selection state if the synchronous signal is not input; converting a present mode to a power-saving mode if the signal source selection state indicates the computer as the selected signal source; and maintaining the present mode if the signal source selection state indicates a signal source other than the computer to be the selected signal source.