Patent application number | Description | Published |
20110267022 | INTERFACE SYSTEM FOR A COG APPLICATION - A current driving type transmitter using independent current signals, which can independently generate and transmit differential current indicating a logic state of data to be transmitted, using a difference between positive data current and negative data current without using external current, so that magnitudes of current applied to a pair of transmission lines can be kept constant without being influenced by the design of current sources and processing factors, a current driving type receiver using independent current signals, which can simultaneously convert a difference in levels of current, received through the transmission lines, into a voltage level by a single I-V converter, so that errors of a true line and a bar line can be lessened, and an interface system for COG application, which adopts the transmitter and receiver, so that distortion of transmitted signals can be reduced. | 11-03-2011 |
20110268202 | TRANSMISSION UNIT ADOPTING A DIFFERENTIAL VOLTAGE DRIVING SYSTEM, TRANSMISSION UNIT AND RECEIVING UNIT SELECTIVELY ADOPTING A DIFFERENTIAL CURRENT DRIVING SYSTEM, DIFFERENTIAL VOLTAGE DRIVING SYSTEM, AND INTERFACE SYSTEM - In the transmitter, receiver and interface system capable of selective adoption of a differential current driving scheme and a differential voltage driving scheme, a differential current driving scheme and a differential voltage driving scheme can be selectively adopted in one semiconductor chip depending upon the states of the transmission lines, so that effective data transmission is possible and common parts can be shared, whereby a design time can be shortened and a layout area can be reduced. | 11-03-2011 |
20110304356 | TRANSMITTER AND RECEIVER OF DIFFERENTIAL CURRENT DRIVING MODE, AND INTERFACE SYSTEM OF DIFFERENTIAL CURRENT DRIVING MODE INCLUDING THE SAME - Differential current driving type transmitter and receiver, and an interface system having the transmitter and receiver. The transmitter includes a current source, a current direction selecting block, and a balancing switch block. The current source sources currents to a pair of transmission lines or sinks currents flowing through the pair of transmission lines. The current direction selecting block transfers a current flowing from the current source to one transmission line of the pair of transmission lines and a current flowing through the other transmission line of the pair of transmission lines to the current source. The balancing switch block initializes the pair of transmission lines to a balanced state. | 12-15-2011 |
20130138370 | BATTERY STATE-OF-CHARGE ESTIMATION METHOD AND BATTERY MANAGEMENT SYSTEM - Provided are a battery state-of-charge (SOC) estimation method and a battery management system which are capable of estimating an SOC using an inexpensive processor and a small-capacity memory. The SOC estimation method includes an SOC table creation step, an SOC calculation step, an SOC comparison step, and a processing step. The battery management system includes a battery, a sensing resistor, a control switch unit, and a processor. | 05-30-2013 |
20130166235 | MANAGEMENT SYSTEM AND ESTIMATING METHOD FOR BATTERY PARAMETER - The present invention relates to a battery parameter management system and a battery parameter estimation method which are capable of simply estimating parameters of elements forming a battery equivalent model having a simple structure. The battery parameter system includes an amperemeter, a voltmeter, a control switch unit, and a processor, and the battery parameter estimation method includes supplying a pulse current, estimating resistance of an internal resistor, estimating capacitance of an internal capacitor, and estimating parameters of dynamic elements. | 06-27-2013 |
20140070757 | CELL BALANCING INTEGRATED CIRCUIT, CELL BALANCING SYSTEM, AND CELL BALANCING METHOD - Introduced are a cell balancing integrated circuit which may be realized including a small number of switches or diodes, an energy non-consumption type cell balancing system including the cell balancing integrated circuit, and an energy non-consumption type cell balancing method. The energy non-consumption type cell balancing system includes a battery pack, a cell balancing circuit, and a plurality of inductors and capacitors. | 03-13-2014 |
20140077715 | SYSTEM CONTROL UNIT, LED DRIVER INCLUDING THE SYSTEM CONTROL UNIT, AND METHOD OF CONTROLLING STATIC CURRENT OF THE LED DRIVER - Embodiments of the present invention provide a light-emitting diode (LED) driver for controlling a static current supplied to an LED array connected to a secondary coil of a transformer by using the peak values of currents flowing through a power transistor, which may reside in a switching element connected to a primary coil of the transformer. In some embodiments, the LED driver is configured to control the static current that flows through the LED array using an AC voltage supplied to the primary side of the transformer. In some embodiments, the LED driver includes a power conversion unit, a switching unit, a transformer, and a system control unit. In some embodiments, the method of controlling the static current of the LED driver includes a current peak value detection step, a step output current calculation step, a static current mean value calculation step, and a gate control signal update step. | 03-20-2014 |
20140111108 | SYSTEM CONTROL UNIT, LED DRIVER INCLUDING THE SYSTEM CONTROL UNIT, AND METHOD OF CONTROLLING STATIC CURRENT OF THE LED DRIVER - Embodiments of the present invention provide a light-emitting diode (LED) driver and method of controlling the static current of the LED driver. In some embodiments, the LED driver is configured to calculate output currents of a pulse form using a small number of parameters and adjust a gate control signal using the mean value of the output currents of a pulse form. Accordingly, the LED driver can be used to control a static current that flows through an LED array connected to a circuit on the secondary side of a transformer using a DC voltage or an AC voltage supplied to the primary side of the transformer. In some embodiments, the LED driver includes a power conversion unit, switching unit, transformer, zero current detection unit, and system control unit. In some embodiments, the system control unit is configured to adjust the gate control signal. | 04-24-2014 |
20150022244 | SOURCE DRIVER AND BIAS CURRENT ADJUSTING METHOD THEREOF - Disclosed are a source driver provided in a display device that displays an image and a bias current adjusting method thereof, and a bias current deviating from a prescribed range is adjusted so that a source driver is driven by a bias current within the prescribed range. | 01-22-2015 |