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| 20090174645 | SOURCE DRIVER THAT GENERATES FROM IMAGE DATA AN INTERPOLATED OUTPUT SIGNAL FOR USE BY A FLAT PANEL DISPLAY AND METHODS THEREOF - A source driver that responds to image data by generating an output signal which can be used to drive a flat panel display. The source driver includes a gamma decoder and an amplifier. The gamma decoder selects a first voltage among first analog gray voltages based on some upper bits of the image data, selects a second voltage among second analog gray voltages based on other upper bits of the image data, and selectively outputs at least one of the first and second voltages as a plurality of distributed analog signals in response to lower bits of the image data. The amplifier interpolates between the distributed analog signals from the gamma decoder to generate the output signal of the source driver. The amplifier includes bias circuits that are each configured to generate a bias current, and a plurality of MOSFETs. Each of the MOSFETs includes a source, a drain, and a gate terminal. The gate terminal of each of the MOSFETS is separately connected to receive a different one of the distributed analog signals from the gamma decoder. One of the source/drain terminals of each of the MOSFETS is separately connected to a different one of the bias circuits to receive the bias current, and the other one of the source/drain terminals of each of the MOSFETS is connected together at an output node to generate an interpolated signal. The output signal is based on the interpolated signal. | 07-09-2009 |
| 20100331620 | SURGICAL APPARATUS FOR TRANSANAL ENDOSCOPIC MICROSURGERY - Provided is a surgical apparatus for transanal endoscopic microsurgery (TEM) in which a thin and long endoscope and surgical instruments are inserted through a natural orifice of a human body and the endoscope and surgical instruments are conveyed to the operation area in the body to perform the operation area in the body. According to the surgical apparatus for TEM, a rotation function is added to a barrel of the surgical apparatus for TEM to enable manual rotation of the barrel to a required extent and adjustment of an operation area, without separation of the surgical apparatus for TEM from a fixing frame during an operation. In addition, since the endoscope is disposed outside the barrel, it is possible to reduce the outer diameter of the barrel and uniformly maintain a visual direction of the endoscope even when the barrel is rotated. Further, since the rotation function is added to both the barrel and the surgical instrument insertion hole, more convenient operation is possible. | 12-30-2010 |
| 20110066163 | Hemostatic Clip and Hemostatic Clip Operation Apparatus Using the Same - Provided are a hemostatic clip and a hemostatic clip operation apparatus using the same that can rapidly stop bleeding from a bleeding area of a blood vessel when a middle or large diameter blood vessel partially bleeds during an abdominal operation or a surgery using an endoscope. The hemostatic clip operation apparatus includes a handle, a first gripper configured to primarily stop bleeding from a bleeding area of a blood vessel, a second gripper configured to receive the first gripper and symmetrically bend a closed-loop shaped-hemostatic clip to secondarily clip a periphery of the bleeding area stopped by the first gripper, and a gripper driver configured to connect the handle to the first and second grippers to be interlocked with operation of the handle to operate sequential stopping of bleeding and clipping of the first and second grippers. | 03-17-2011 |
| 20110152717 | APPARATUS FOR INSERTING NEEDLE - Provided is an apparatus for inserting a needle capable of obtaining automation of tissue sample collection or drug injection and operation stability by applying a link mechanism between a needle inserted into a specific part of a human body and a power source for providing a drive force. The apparatus includes a needle unit inserted into a human body, a drive unit configured to provide a drive force to the needle unit such that the needle unit reciprocates between an insertion position at which the needle unit is inserted into the human body and a withdrawal position at which the needle unit is withdraw to the outside of the human body, and a guide unit including a plurality of guide links each having at least two links relatively rotated by the drive force of the drive unit and radially disposed around the needle unit, and configured to guide the needle unit such that the needle unit translates between the insertion position and the withdrawal position in a longitudinal direction of the needle unit. | 06-23-2011 |
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| 20080284493 | Proportional to absolute temperature current generation circuit having higher temperature coefficient, display device including the same, and method thereof - A proportional to absolute temperature (PTAT) current generation circuit may include a current mirror unit and/or a level control unit. The current mirror unit may be connected between a first power supply voltage, a first node, and/or a second node. The level control unit may be connected between the first node, the second node, and/or a second power supply voltage. The level control unit may be configured to control a level of an output current of the current mirror unit based on a voltage level of the first node and a voltage level of the second node. The level control unit may include a first transistor connected between the first node and the second power supply voltage, at least one second transistor connected between the second node and a third node, the at least one second transistor configured to operate in a weak inversion region, and/or a third transistor connected between the third node and the second power supply voltage. | 11-20-2008 |
| 20090109198 | BUFFER AMPLIFIER INCLUDED IN DISPLAY DRIVER AND METHOD OF GENERATING DRIVING VOLTAGES USING THE SAME - A method of generating a driving voltage includes inputting a test gradation voltage to a first input terminal and a second input terminal of a buffer, latching the logic level of a test driving voltage output from an output terminal of the buffer, setting the buffer to a first type when the logic level of the test driving voltage is high level and setting the buffer to a second type when the logic level of the test driving voltage is low level, and operating the buffer set to the first type or the second type to generate a driving voltage corresponding to a gradation voltage. | 04-30-2009 |
| 20100002019 | DIGITAL TO ANALOG CONVERTER, SOURCE DRIVER AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A digital to analog converter includes a first decoder, a gamma reference voltage decoder unit and an active resistor string unit. The first decoder receives 2 | 01-07-2010 |
