Abstract: Provided are a semiconductor device and a method for operating the semiconductor device. A semiconductor device includes a low power condition module which determines whether a system operated by a battery satisfies enter and exit conditions of a low power mode; an address module which identifies a predetermined own address; a low power set module which sets a detailed operation mode of the low power mode in accordance with the address identified by the address module; a debounce module which executes a debounce operation before the system entering the low power mode; and a low power enter/exit module which executes entry and exit of the low power mode of the system.

Abstract: A magnetic secure transmission system includes an inductor, a switching circuit connected to the inductor, and a control circuit. The control circuit controls the switching circuit to adjust a level of a current in the inductor by a first amount over a data transmission period, such that the inductor emits a magnetic pulse including a first magnitude during the data transmission period. The control circuit controls the switching circuit to adjust the level of the current in the inductor such that the level of the current is increased and decreased repeatedly by a second amount between two different levels during a data non-transmission period, and the inductor emits a magnetic pulse including a second magnitude during the data non-transmission period. The second amount is less than the first amount, the first magnitude is greater than a threshold value and the second magnitude is less than the threshold value.

Abstract: The semiconductor device including first and second transistors configured to provide a first voltage to a first node, the first voltage being a voltage provided from a travel adaptor (TA), a third transistor connected in series with the second transistor and configured to provide a ground voltage to the first node, and a fourth transistor configured to receive a second voltage from a first inductor connected to the first node, and provide the second voltage to a second node as a third voltage for charging a battery connected thereto may be provided.

Abstract: A display apparatus and a control method thereof are disclosed. The display apparatus includes a display unit comprising a plurality of displays; an image signal receiver; and a controller configured to: in response to an image source being changed from a first image source to a second image source while a first image of the first image source is being displayed on the display unit, determine whether the displays are ready to process an image signal of the second image source, and display one of the first image and a second image corresponding to the image signal of the second image source on the display unit based on a result of the determining.

Abstract: Provided are a semiconductor device and a method for operating the semiconductor device. A semiconductor device includes a low power condition module which determines whether a system operated by a battery satisfies enter and exit conditions of a low power mode; an address module which identifies a predetermined own address; a low power set module which sets a detailed operation mode of the low power mode in accordance with the address identified by the address module; a debounce module which executes a debounce operation before the system entering the low power mode; and a low power enter/exit module which executes entry and exit of the low power mode of the system.

Abstract: A magnetic secure transmission system includes an inductor, a switching circuit connected to the inductor, and a control circuit. The control circuit controls the switching circuit to adjust a level of a current in the inductor by a first amount over a data transmission period, such that the inductor emits a magnetic pulse including a first magnitude during the data transmission period. The control circuit controls the switching circuit to adjust the level of the current in the inductor such that the level of the current is increased and decreased repeatedly by a second amount between two different levels during a data non-transmission period, and the inductor emits a magnetic pulse including a second magnitude during the data non-transmission period. The second amount is less than the first amount, the first magnitude is greater than a threshold value and the second magnitude is less than the threshold value.

Abstract: A circuit board for a power supply, an electronic apparatus including the same, and an inductor device are provided. The circuit board includes a first pattern arranged on a first layer of the circuit board and including a first terminal coupled to a coil, a first layer region arranged on the first layer, the coil being disposed on the first layer region, and a second pattern arranged on a second layer of the circuit board, below the first layer. The second pattern includes a first blank region located below the first layer region, and has no conductive material arranged thereon.

Abstract: A magnetic secure transmission (MST) system includes a switching circuit, an inductor, and a control circuit. The control circuit is configured to control the switching circuit to adjust a level of current in the inductor. The inductor current may be adjusted by a first amount over a data transmission period such that the inductor emits a magnetic pulse including a first magnitude. The inductor current may be kept constant during a first sub-period of a data non-transmission period and may be changed by a second amount at a constant slope during a second sub-period of the data non-transmission period, such that the inductor emits a magnetic pulse including a second magnitude during the second sub-period of the data non-transmission period. The second amount is less than the first amount. The first magnitude is greater than a threshold value. The second magnitude is less than the threshold value.

Abstract: The semiconductor device including first and second transistors configured to provide a first voltage to a first node, the first voltage being a voltage provided from a travel adaptor (TA), a third transistor connected in series with the second transistor and configured to provide a ground voltage to the first node, and a fourth transistor configured to receive a second voltage from a first inductor connected to the first node, and provide the second voltage to a second node as a third voltage for charging a battery connected thereto may be provided.

Abstract: A display apparatus and a control method thereof are disclosed. The display apparatus includes a display unit comprising a plurality of displays; an image signal receiver; and a controller configured to: in response to an image source being changed from a first image source to a second image source while a first image of the first image source is being displayed on the display unit, determine whether the displays are ready to process an image signal of the second image source, and display one of the first image and a second image corresponding to the image signal of the second image source on the display unit based on a result of the determining.

Abstract: A magnetic secure transmission (MST) system includes a switching circuit, an inductor, and a control circuit. The control circuit is configured to control the switching circuit to adjust a level of current in the inductor. The inductor current may be adjusted by a first amount over a data transmission period such that the inductor emits a magnetic pulse including a first magnitude. The inductor current may be kept constant during a first sub-period of a data non-transmission period and may be changed by a second amount at a constant slope during a second sub-period of the data non-transmission period, such that the inductor emits a magnetic pulse including a second magnitude during the second sub-period of the data non-transmission period. The second amount is less than the first amount. The first magnitude is greater than a threshold value. The second magnitude is less than the threshold value.

Abstract: A circuit board for a power supply, an electronic apparatus including the same, and an inductor device are provided. The circuit board includes a first pattern arranged on a first layer of the circuit board and including a first terminal coupled to a coil, a first layer region arranged on the first layer, the coil being disposed on the first layer region, and a second pattern arranged on a second layer of the circuit board, below the first layer. The second pattern includes a first blank region located below the first layer region, and has no conductive material arranged thereon.

Abstract: The present invention relates to a thermal shutdown unit, a switch controller including the same, and a method controlling a thermal shutdown protection operation. The present invention determines the operation state of an SMPS to vary a reference temperature for controlling a thermal shutdown protection operation according to an operation state of the SMPS.

Abstract: The present invention relates to a power supply device generating an output power by using an AC line voltage generated through rectification of an AC input, and a driving method thereof. The power supply device controls the switching operation of the power switch by using a sensing voltage corresponding to the drain current flowing to the power switch and the feedback voltage corresponding to the output voltage. The power supply device controls the feedback current every switching cycle to generate a threshold voltage, and compares the sensing voltage and the threshold voltage to control the turn-off of the power switch. The feedback current includes the first current to generate the feedback voltage, and the threshold voltage follows a curved line waveform in which the increasing slope is decreased during the switching cycle.

Abstract: The present invention relates to a power supply device generating an output power by using an AC line voltage generated through rectification of an AC input, and a driving method thereof. The power supply device controls the switching operation of the power switch by using a sensing voltage corresponding to the drain current flowing to the power switch and the feedback voltage corresponding to the output voltage. The power supply device controls the feedback current every switching cycle to generate a threshold voltage, and compares the sensing voltage and the threshold voltage to control the turn-off of the power switch. The feedback current includes the first current to generate the feedback voltage, and the threshold voltage follows a curved line waveform in which the increasing slope is decreased during the switching cycle.

Abstract: The present invention relates to a thermal shutdown unit, a switch controller including the same, and a method controlling a thermal shutdown protection operation. The present invention determines the operation state of an SMPS to vary a reference temperature for controlling a thermal shutdown protection operation according to an operation state of the SMPS.