Abstract: A display panel has a display area and a peripheral circuit area next to the display area. The display panel includes a number of pixels, a first signal line, a second signal line, and a third signal line. The pixels are arranged in array in the display area. The first signal line disposed in an intersection of the display area and the peripheral circuit area is electrically connected to the pixels. A data signal is suitable for being applied to the first signal line. The second signal line is disposed in the peripheral circuit area. A common signal is suitable for being applied to the second signal line. The third signal line is disposed between the first signal line and the second signal line. A reference signal is suitable for being applied to the third signal line. The data signal, the common signal, and the reference signal are different signals.

Abstract: A touch pen comprises a penholder, an electrically conducting core, a flexible covering and fabric covering. The electrically conducting core is coupled to the penholder. The electrically conducting core is ensheathed in the flexible covering, while the fabric covering wraps around the flexible covering, wherein either flexible covering or fabric covering has electrical conductivity. In the present invention, the flexible covering and the fabric covering are shaped under the pressure exerted by the electrically conducting core and a touch panel so as to increase the contact area between the touch pen and the touch panel and, meanwhile, the fabric covering is capable of reducing the friction between touch pen and the touch panel, thereby improving the sensitivity and touch effect.

Abstract: A method for driving a tri-gate TFT-LCD includes providing a polarity converting common voltage. When polarity of the common voltage is converted, a first gate line is turned on for a source line to charge a first sub-pixel for a first write in duration. When the first gate line is turned off, a second gate line is turned on for the source line to charge a second sub-pixel for a second write in duration. When the second gate line is turned off, a third gate line is turned on for the source line to charge a third sub-pixel for the second write in duration. By adjusting the first write in duration the first sub-pixel can be fully charged, consequently improving the color deviation of the displayed image.

Abstract: A driving circuit of LCD includes a common signal generator and a modulation circuit. The modulation circuit can generate a first frequency, a second frequency, and a third frequency. The common signal generator generates a swing common signal according to the first frequency, and modulates the frequency of the common signal in the frequency range between the second frequency and the third frequency.

Abstract: A capacitive touchpad comprises two traces with a plurality of first and second sensors coupled thereto respectively, and the first and second sensors are arranged interlaced and uneven spaced to each other. By detecting the capacitance variances produced by the sensors from the traces, phase leading or lagging Z-axis signals are generated to determine the moving direction of a finger sliding on the capacitive touchpad.

Abstract: A display panel has a display area and a peripheral circuit area next to the display area. The display panel includes a number of pixels, a first signal line, a second signal line, and a third signal line. The pixels are arranged in array in the display area. The first signal line disposed in an intersection of the display area and the peripheral circuit area is electrically connected to the pixels. A data signal is suitable for being applied to the first signal line. The second signal line is disposed in the peripheral circuit area. A common signal is suitable for being applied to the second signal line. The third signal line is disposed between the first signal line and the second signal line. A reference signal is suitable for being applied to the third signal line. The data signal, the common signal, and the reference signal are different signals.

Abstract: A capacitive touchpad comprises two traces with a plurality of first and second sensors coupled thereto respectively, and the first and second sensors are arranged interlaced and uneven spaced to each other. By detecting the capacitance variances produced by the sensors from the traces, phase leading or lagging Z-axis signals are generated to determine the moving direction of a finger sliding on the capacitive touchpad.

Abstract: An improved parallel-serial multiplier and accumulator for multiplying a digital multiplicand and a multiplier resulting in a product that is added to an accumulator input. The parallel-serial multiplier and accumulator includes a parallel-serial multiplier and a digit serial adder. The parallel-serial multiplier includes a recoder for receiving the digital multiplier and outputting an ordered sequence of recoded words, a partial product generator for generating partial products that are dependent upon the digital multiplicand and upon each of the ordered sequence of recoded words, and an adder for adding the partial products to provide the product. The adder outputs a digit serial word that contains the least significant bits of an intermediate sum of the partial products as the partial products are being added. The digit serial adder includes a carry save adder that receives the product and the accumulator input to produce the output sum.

Abstract: A modified least mean squares adaptive filter method and apparatus is disclosed. The filter coefficients used to perform the FIR multiplications in a least mean squares adaptive filter are time dependent upon a time index. Each tap of the FIR section utilizes a coefficient at a different time index. This allows an implementation in hardware that is modular and easy for implementation in VLSI technologies. In addition, an improve multiplier and accumulator is disclosed for use in implementing the improved least squares adaptive filter.