Abstract: A ramp reset waveform generating apparatus in a display panel driving apparatus for a display panel includes a current source which is connected to a first electrode sustain circuit of the display panel through a first terminal of the current source, and generates a current corresponding to a predetermined reference current; a first switching unit which switches current flow between a second terminal of the current source and a first electrode terminal of the display panel; and a second switching unit which switches current flow between the second terminal of the current source and a second electrode terminal of the display panel, wherein, in a reset period, a ramp reset waveform is generated in the first electrode terminal and the second electrode terminal by the charge or discharge process of the display panel by the current generated in the current source according to a predetermined switching sequence.

Abstract: Provided are an energy recovery apparatus and method for recovering energy in a plasma display panel (PDP) at improved efficiency using a single energy storage device and a small number of devices regardless of the number of pixels that become conductive as a result of the screen state. The energy recovery apparatus includes a first closed circuit, which supplies predetermined source voltage to pixels for conduction according to a predetermined switching sequence; a second closed circuit, which uses a single energy storage device to recover energy discharged from the pixels that have been charged by the first closed circuit; and a third closed circuit, which transfers the energy stored in the energy storage device to pixels for conduction according to the predetermined switching sequence.

Abstract: A highly-efficient device and method for driving a plasma display panel, by which the voltage stresses of circuit elements, which constitute the driving device, are significantly reduced, and power consumption and heat emission are accordingly reduced. Charging and discharging modes, which constitute a sustain mode, are divided into two first and second charging modes, which are pre-charging and post-charging modes, and two first and second discharging modes, which are pre-discharging and post-discharging modes, respectively. The plasma display driving device is designed so that the two charging modes form different resonance paths passing through different inductors, and the two discharging modes also form different resonance paths passing through different inductors. Consequently, voltage stresses applied to the elements of the driving device are halved.

Abstract: Provided are a plasma display panel (PDP) device using a sub-field mode and a method of driving the PDP device. The method of driving the PDP includes allocating a first event pulse for generating an even number of light pulses or a second event pulse for generating an odd number of light pulses to each sub-field, and outputting sustain pulses, which generate light pulses, according to the allocated event pulse. Thus, linearity of the gray level can be improved and an image quality can be improved.

Abstract: A plasma display panel sustain driver that has a decreased flywheel current.

Abstract: An image distortion compensating apparatus controls a convergence yoke, and includes a compensation value generator for calculating a convergence compensation value for compensating a convergence distortion which occurs while an image signal is emitted onto a display apparatus, the compensation value generator outputting the convergence compensation value after compensating for a phase and a gain of the convergence yoke; an amplifier for D-class amplifying of the convergence compensation value; and a convergence yoke attached to the display apparatus for controlling a path of electron beams corresponding to the image signal, based on the convergence compensation value as amplified at the amplifier.

Abstract: An apparatus and method for automatically adjusting a gradient of a reset ramp waveform of a plasma display panel in order to automatically adjust a ramp waveform generated in a reset period contributing to deviation adjustments between circuit components and between panels are provided. The apparatus manufacturing process is simple and the reset ramp waveform gradient is automatically adjusted, without manually adjusting the reset ramp waveform gradient, by sensing image information related to a gradient adjustment of the reset ramp waveform of the plasma display panel through a sensor and automatically generating a ramp waveform of a most suitable gradient based on the sensed image information.

Abstract: Provided are an apparatus and a method of driving a high-efficiency plasma display panel for quickly eliminating a free-wheeling current, generated due to the parasitic effect in an energy recovery circuit, thereby improving energy recovery efficiency.

Abstract: An apparatus for supplying a deflection power for use in a display and a control method thereof. The apparatus includes a high voltage outputting portion having a first coil connected to a rectifier and a second coil, coupled with the first coil, which outputs an induced voltage, a first switch installed between the rectifier and the first coil, for controlling a power supply, a second switch installed on a path formed from the first switch, the first coil, and the rectifier, for controlling the power supply, and a deflection electric current generator connected in parallel with the second switch, the deflection electric current generator having a series-connected deflection coil and capacitor.

Abstract: An image distortion compensating apparatus controls a convergence yoke, and includes a compensation value generator for calculating a convergence compensation value for compensating a convergence distortion which occurs while an image signal is emitted onto a display apparatus, the compensation value generator outputting the convergence compensation value after compensating for a phase and a gain of the convergence yoke; an amplifier for D-class amplifying of the convergence compensation value; and a convergence yoke attached to the display apparatus for controlling a path of electron beams corresponding to the image signal, based on the convergence compensation value as amplified at the amplifier.

Abstract: Disclosed is an image misconvergence correction apparatus having a correction value generation unit for calculating a convergence correction value to correct misconvergence occurring when a video signal is scanned on a display device; an amplification unit for performing D-class amplification with respect to the convergence correction value; a convergence yoke mounted in the display device to control a path of electron beams corresponding to the video signal based on the convergence correction value amplified in the amplification unit; and a feedback sensing unit for differentially amplifying a voltage value for electric current passing through the convergence yoke, and feeding back the differentially amplified voltage value to the correction value generation unit.

Abstract: Provided are an energy recovery apparatus and method for recovering energy in a plasma display panel (PDP) at improved efficiency using a single energy storage device and a small number of devices regardless of the number of pixels that become conductive as a result of the screen state. The energy recovery apparatus includes a first closed circuit, which supplies predetermined source voltage to pixels for conduction according to a predetermined switching sequence; a second closed circuit, which uses a single energy storage device to recover energy discharged from the pixels that have been charged by the first closed circuit; and a third closed circuit, which transfers the energy stored in the energy storage device to pixels for conduction according to the predetermined switching sequence.

Abstract: Disclosed are an apparatus and method for controlling automatic adjustment of a power supply of a display panel driving system. According to the apparatus and method, a voltage of the power supply of the display panel driving system is automatically adjusted in order to have the best possible image quality. According to the apparatus and method, since the PDP driving power supply is not manually adjusted using the variable resistors as in the related art, but is automatically adjusted. The apparatus manufacturing process is simple, and deviation caused by the automatic adjustment of the power supply is decreased compared with the manual adjustment of the related art, by automatically adjusting the PDP driving voltage affecting to the contrast deviation and brightness deviation of the PDP image in the PDP driving power supply circuit so as to maintain the best possible image quality.

Abstract: A highly-efficient device and method for driving a plasma display panel, by which the voltage stresses of circuit elements, which constitute the driving device, are significantly reduced, and power consumption and heat emission are accordingly reduced. Charging and discharging modes, which constitute a sustain mode, are divided into two first and second charging modes, which are pre-charging and post-charging modes, and two first and second discharging modes, which are pre-discharging and post-discharging modes, respectively. The plasma display driving device is designed so that the two charging modes form different resonance paths passing through different inductors, and the two discharging modes also form different resonance paths passing through different inductors. Consequently, voltage stresses applied to the elements of the driving device are halved.

Abstract: An apparatus and method for automatically adjusting a gradient of a reset ramp waveform of a plasma display panel in order to automatically adjust a ramp waveform generated in a reset period contributing to deviation adjustments between circuit components and between panels are provided. The apparatus manufacturing process is simple and the reset ramp waveform gradient is automatically adjusted, without manually adjusting the reset ramp waveform gradient, by sensing image information related to a gradient adjustment of the reset ramp waveform of the plasma display panel through a sensor and automatically generating a ramp waveform of a most suitable gradient based on the sensed image information.

Abstract: An apparatus for driving a plasma display panel (PDP), which is capable of simplifying the structure of a sustain circuit directly affecting the illumination and power consumption of the PDP and increasing an energy recovery rate, and a method thereof are provided. The structure and switching sequence of the sustain circuit are designed so that the transition time to increase the amount of current of an inductor in an energy recovery circuit when charging/discharging the PDP can be minimized. Accordingly, the recovery rate of displacement power can be increased, and EMI can be decreased by not causing switching loss. In addition, the number of circuits required in the apparatus for driving the PDP can be reduced smaller than the number of circuits required in a conventional PDP driver.

Abstract: An apparatus for recovering energy using a magnetic coupled inductor so as to drive a plasma display panel (PDP) and a method for designing the same. Accordingly, reactive power and heat dissipation amount are reduced without having an additional isolation gate driver. The apparatus improves the recovery rate of the reactive power by applying the magnetic coupled inductor to an energy recovering circuit at the time of charging/discharging the PDP and by connecting the source electrode of a switching device in the energy recovering circuit to the ground. In addition, the apparatus reduces electromagnetic interference (EMI) by reducing switching loss to zero and by not generating a sudden change in panel voltage. The apparatus further simplifies the circuit structure of a gate drive terminal and reduces the number of circuit elements compared to an existing PDP drive circuit.

Abstract: The present invention discloses an energy recovery sustain circuit for an AC plasma display panel in which includes one energy recovery sustain circuit incorporating X and Y electrodes. The invention includes a load capacitor, first and fourth switching elements to charge the load capacitor up to a predetermined positive voltage, a second and third switching elements to charge the load capacitor up to a predetermined negative voltage, a fifth switching element to apply an external voltage to the load capacitor to continually sustain the predetermined positive or negative voltage in the load capacitor during a certain period, an inductor for generating the certain leveled positive or negative voltage to charge the load capacitor, and first and second capacitors for charging or discharging a current flowing through the inductor. The invention has a simplified configuration, low production cost, and high reliability.

Abstract: An apparatus for driving a plasma display panel (PDP), which is capable of simplifying the structure of a sustain circuit directly affecting the illumination and power consumption of the PDP and increasing an energy recovery rate, and a method thereof are provided. The structure and switching sequence of the sustain circuit are designed so that the transition time to increase the amount of current of an inductor in an energy recovery circuit when charging/discharging the PDP can be minimized. Accordingly, the recovery rate of displacement power can be increased, and EMI can be decreased by not causing switching loss. In addition, the number of circuits required in the apparatus for driving the PDP can be reduced smaller than the number of circuits required in a conventional PDP driver.

Abstract: An apparatus for recovering energy using a magnetic coupled inductor so as to drive a plasma display panel (PDP) and a method for designing the same. Accordingly, reactive power and heat dissipation amount are reduced without having an additional isolation gate driver. The apparatus improves the recovery rate of the reactive power by applying the magnetic coupled inductor to an energy recovering circuit at the time of charging/discharging the PDP and by connecting the source electrode of a switching device in the energy recovering circuit to the ground. In addition, the apparatus reduces electromagnetic interference (EMI) by reducing switching loss to zero and by not generating a sudden change in panel voltage. The apparatus further simplifies the circuit structure of a gate drive terminal and reduces the number of circuit elements compared to an existing PDP drive circuit.