Abstract:
A shift register which is capable of performing bi-directional scanning is disclosed. The shift register includes first and second voltage input lines to which first and second voltages are input, respectively with the phases of the first and second voltages being opposite to each other; a plurality of stages dependently connected to a plurality of clock signal input lines which input a plurality of clock signals whose phases are sequentially delayed, wherein each stage includes: a scan direction controller to selectively output the first and second voltages thereto, according to first and second start pulses, and for controlling scan direction, a node controller to control voltages of first and second nodes according to a signal output from the scan direction controller, and an output unit to output a clock signal from one of the plurality of clock signal input lines thereto according to the voltage of each of the first and second nodes. The shift register can perform forward and reverse direction scans as first and second voltages whose phases are opposite to one another are selectively output thereto according to output signals from previous and next stages.
Abstract:
Devices and methods for transferring forces down a catheter shaft while also maintaining an open fluid pathway are disclosed. In some of the designs, inner and outer members of the catheter interact, allowing improved transfer of forces down the catheter shaft. These designs also allow for maintenance of a fluid pathway along the length of the shaft, including at locations where the inner and outer members are interacting with one another. Structures are disclosed which extend at least a portion of the length of the shaft, allowing improved force transfer and resistance to kinking. Structures are also disclosed which specifically allow for inner and outer members to engage one another at at least one point along the shaft, improving the transfer of forces down the shaft.
Abstract:
Medical devices such as catheters can include structure or provision that permit a physician or other health care professional to adjust the stiffness of at least a portion of the medical device. In some instances, the medical device may be adjusted prior to inserting the medical device into a patient. In some cases, the medical device may be adjusted while in use within the patient.
Abstract:
A shift register structure comprising a shift register for sequentially outputting voltages as a clock signal and a start voltage are inputted thereto, and a cleaner means connected to the shift register for removing noise within the start voltage. The cleaner means is a transistor for inputting a clock signal to a gate and for inputting a signal outputted from the shift register to a source.
Abstract:
A liquid crystal display (LCD) device comprises a liquid crystal panel having a plurality of pixel regions defined by a plurality of gate lines and data lines, each pixel region associated with a thin film transistor, a gate driving unit having an amorphous semiconductor and integrally formed with the liquid crystal panel capable of sending a scan signal to the gate lines having a pulse width longer than a turned on time of the thin film transistor located within the pixel region, and a data driving unit connected to the data lines capable of sending an image signal to the data lines.
Abstract:
An optical fiber amplifier having constant output power for each channel including a first measuring unit for dividing an input light signal into a first light signal and a second light signal, sub-dividing the first light signal into a plurality of light signals and converting the plurality of light signals into electrical signals to output the electrical signals, an optical fiber amplifying unit for amplifying the second light signal according to a predetermined amplification control value, a second measuring unit for converting a light signal of a predetermined wavelength band, output from the optical fiber amplifying unit, into an electrical signal, and an output power controller for controlling the predetermined amplification control value according to a plurality of output values of the first measuring unit and an output value of the second measuring unit, so that the power level of the optical fiber amplifying unit is maintained at a constant level.
Abstract:
An erbium doped fiber amplifier (EDFA) suitable for amplifying a long wavelength light signal in the range in the 1570 to 1610 nm band, includes a pump light source for generating pump light in the 980 or 1480 nm band, a light coupler for receiving the pump light from the pump light source and coupling the same to the received light signal, first and second optical fibers doped with erbium ions, for amplifying the received light signal by the pump light, and an isolator positioned at a point between the first and second erbium doped optical fibers (EDFs). The gain and noise figure of the EDFA for amplifying received light signal in a long wavelength band can be improved. Also, an EDFA suitable for amplifying received light signal in the 1570 to 1610 nm band can be attained.