Abstract: A pixel capable of preventing abnormal light emission thereof. A pixel includes an organic light emitting diode coupled between a first power source and a second power source; a pixel circuit unit having a driving transistor coupled between the first power source and the organic light emitting diode to supply driving current to the organic light emitting diode during a light emitting period; and a bypass unit coupled between the pixel circuit unit and a bias power source, the bypass unit being turned on during a non-light emitting period in which the driving transistor is turned off.

Abstract: A method of driving an organic light emitting display device including a plurality of pixels during a frame including subframes includes: representing gray levels by utilizing some of the subframes of the frame prior to degradation of an organic light emitting diode of each of the plurality of pixels; and compensating for the degradation of the organic light emitting diodes by changing the utilized subframes to increase a portion of the frame utilized by the plurality of pixels to represent the gray levels.

Abstract: A pixel and an organic light emitting display using the same are provided. The display displays an image having desired gray levels while allowing the voltage of data signals to be reduced. The pixel includes an organic light emitting diode; a driving transistor for supplying a current to the organic light emitting diode; a switching transistor configured to supply a data signal from a data line to a gate electrode of the driving transistor based on a scan signal from a scan line; a storage capacitor coupled between the gate electrode of the driving transistor and a source electrode of the driving transistor; and an initialization transistor coupled between the source electrode of the driving transistor and an initialization power voltage.

Abstract: The present invention may provide a method of generating a walking pattern for a humanoid robot. The method of generating the walking pattern for the humanoid includes determining a position of a next Zero Moment Point (ZMP) along a moving direction of the humanoid robot, obtaining a first condition for generating a walking pattern based on the determined ZMP by using a periodic step module, generating trajectories of a ZMP and a Center of Mass (CoM) in an initial step based on the first condition and an initial value obtained from an initial state of the humanoid robot by using a transient step module, generating trajectories of a ZMP and a CoM in a steady step based on the ZMP of two steps by using a steady step module, and generating trajectories of a ZMP and a CoM in a final step by using the transient step module.

Abstract: There is provided a method of driving an organic light emitting display capable of displaying an image with uniform brightness. The method includes storing a brightness characteristic corresponding to emission time of an organic light emitting diode (OLED), adding first data supplied in units of frames by pixels to generate accumulated data, extracting accumulated data of a pixel to which currently supplied first data is to be supplied and calculating maximum brightness corresponding to emission time of the extracted accumulated data, calculating maximum brightness corresponding to emission time of largest accumulated data among the accumulated data, controlling a bit value of the first data using maximum brightness of a pixel to which the first data is to be supplied and maximum brightness of the largest accumulated data to generate second data, and controlling a voltage value of a first power source supplied to the pixels in response to the maximum brightness of the largest accumulated data.

Abstract: An organic light emitting display capable of preventing data collision to improve picture quality. The organic light emitting display includes pixels positioned at crossings between scan lines and data lines, a scan driver for driving the scan lines, a data driver for driving the data lines, a timing controller for controlling the scan driver and the data driver, and an input controller for receiving data and an input clock, and for controlling a point in time where the data is supplied to the timing controller in response to at least one clock signal supplied from the timing controller.

Abstract: A power source for applying a voltage to a pixel circuit, the power source including a sensing unit and a controlling unit. The sensing unit senses a current flowing through a power line coupled to the pixel circuit, the controlling unit increases a voltage applied to the power line by a first amount when the sensed current is lower than a reference, and the controlling unit decreases the voltage applied to the power line by a second amount when the sensed current is higher than the reference, the second amount being different from the first amount.

Abstract: An organic light emitting display is disclosed. The display comprises: a scan driver for sequentially supplying a scan signal to scan lines during scan periods of a plurality of sub-frames included in a frame; a data driver for supplying a data signal to data lines when the scan signal is supplied; pixels disposed at a display region of a panel to be coupled to the scan lines and the data lines, and receiving a first power source voltage and a second power source voltage; at least one dummy organic light emitting diode disposed at a non-display region of the panel; and a power source block for supplying an electric current to the dummy organic light emitting diode and for generating the first power source voltage based on a voltage of the dummy organic light emitting diode corresponding to the electric current.

Abstract: An organic light emitting display is disclosed. The organic light emitting display has a test pixel which receives power from a power supply, where the voltage of the power is adjusted so as to cause a certain amount of current to flow in the test pixel. The adjusted voltage is then used to power the rest of the pixel array of the display.

Abstract: A method of driving an organic light emitting diode (OLED) display device that displays grayscales in a time-division manner and can prevent the occurrence of false contours and flickers at an interface between neighboring grayscales when displaying sequential images, such as moving images, at a high speed. The method is an interlaced scanning method in which a single frame is divided into an odd-numbered field and an even-numbered field that are sequentially driven, and includes dividing each of the odd-numbered field and the even-numbered field into x sub-frame groups; dividing each of a plurality of sub-frames corresponding to bits of driving data into y divided sub-frame portions; and disposing the y divided sub-frame portions in different ones of the x sub-frame groups.

Abstract: The invention relates to a method for controlling walking of humanoid bipedal walking robot. More specifically, the invention comprises steps of designing a zero momentum position (ZMP) of a robot for the ground surface (a); calculating trajectories of a center of gravity (COG) of the robot along with the trajectory of the ZMP (b); calculating an angular velocity of driving motors of two feet, which has the robot walk according to the trajectory of the ZMP (c); and controlling walking of the robot by driving the driving motors according to the angular velocity of the driving motors calculated above. The robot walking control method according to the invention has stability against disturbances.

Abstract: Disclosed is an organic light emitting display of improved an image quality. The organic light emitting display includes a frame memory for storing a data to correspond to a write clock and outputting the data stored according to a read clock; a signal generation unit for supplying the read clock; a data driver for converting the data, supplied from the frame memory, into a data signal and supplying the converted data signal to data lines; a scan driver for supplying a scan signal to scan lines; and pixels arranged near crossing points between the scan lines and the data lines, wherein the read clock has a higher frequency than the write clock.

Abstract: The organic light emitting display may include a scan driver configured to sequentially supply a scan signal to scan lines during every subframe period, a data driver configured to supply a data signal to data lines when the scan signal is supplied, at least one lookup table configured to store a gamma correction value to gamma-correct data input from the outside, and a frame memory arranged between the lookup table and the data driver to store the gamma-corrected data.

Abstract: An display and a driving method thereof are capable of displaying images of desired luminance. The display includes a scan driver connected to scan lines, a data driver connected to data lines, pixels connected to the scan lines and the data lines, the pixels being adapted to generate light while supplying an electric current from a first power source to a second power source, a power source unit for generating the first power source, and a compensating unit adapted to control a voltage value of the first power source.

Abstract: A voltage level converting circuit may include a first transistor including a first terminal coupled with a first terminal supplying a first voltage, and a control terminal coupled with an input terminal, a second transistor including a first terminal coupled with a second terminal supplying a second voltage lower than the first voltage, and a control terminal coupled with the input terminal, a third transistor including a first terminal coupled with a third terminal supplying a third voltage higher than the first voltage, a second terminal coupled with an output terminal, and a control terminal coupled with a second terminal of the second transistor, and a fourth transistor including a first terminal coupled with a fourth terminal supplying a fourth voltage lower than the second voltage, a second terminal coupled with the output terminal, and a control terminal coupled with a second terminal of the first transistor.

Abstract: An organic light emitting display adapted to be driven using a frame divided into a plurality of sub-frames includes a scan driver adapted to sequentially provide a scan signal to scan lines every sub-frame, a data driver adapted to provide an output signal to an output line when the scan signal is supplied to the data driver, a demultiplexer adapted to separate the output signal into a plurality of data signals, and a storage section adapted to simultaneously provide the plurality of data signals from the demultiplexer to a corresponding plurality of data lines.

Abstract: A digital driving system for a display includes a scan driver adapted to supply scan signals serially to scan lines of the display, a data driver adapted to supply a first data signal and a second data signal to data lines of the display, a timing controller adapted to control the scan driver and the data driver in accordance with a main clock, and to supply external data to the data driver, and a vertical synchronizing signal synchronizing circuit adapted to synchronize an internal vertical synchronizing signal and an external vertical synchronizing signal.

Abstract: A latch type optical communication module is easily mounted to and detached from a system port having a cage by means of a latch. The optical communication module is provided with a latch. The latch is rotated around a hinge shaft fixed to both sides of a receptacle and engaging latch holes of ends of the latch. When rotated the latch moves latch drivers to force a slider upward, the slider raises a groove engaging a fixing tap of the optical communication module thereby allowing the optical communication module to be detached from the system port. The optical communication module can be detached from the system port without a tool or influence or adjacent an optical communication module.

Abstract: An optical communication module is provided with a platform to provide an accurate axial alignment with optical transceiving subassemblies. In the optical communication module, axes of the optical transceiving sub-assemblies are aligned by virtue of previously established axial alignment of the platform, and the platform is fixed to a main body by inserting an insertion jaw of a cover into an insertion groove formed on an upper surface of the platform. After the optical transceiving subassemblies are inserted into the platform having the axial alignment required for a system, a bonding agent is filled into spaces defined in the platform, thereby preventing the axes from deviated by an external force.

Abstract: A device for identifying a bit rate includes: a first frequency divider for primarily dividing an inputted electrical signal at a previously set ratio of 1:R1; a second frequency divider for secondarily dividing the primarily divided electrical signal at a previously set ratio of 1:R2; and, a controller for calculating a frequency from the number of pulses of the secondarily divided electrical signal and then identifying a bit rate corresponding to the frequency.