摘要:
The present invention discloses a noise reduction touch light adjustment device including a light adjustment film, a capacitive touch panel, a noise reduction film, a glass substrate, a control circuit module, and an alternating current (AC) transformer. The noise reduction film is disposed between the light adjustment film and the capacitive touch panel to lower noise inputted from the AC transformer into the light adjustment film such that the capacitive touch panel is ensured to be operated precisely.
摘要:
A touch electrode structure and a capacitive touch system are provided. The touch electrode structure includes: a substrate; a plurality of first electrode series each including a plurality of first electrodes; a plurality of second electrode series each including a plurality of second electrodes; and at least one connecting wire. Each of the second electrode series includes at least one electrode group, and the at least one electrode group includes two of the second electrodes. The two of the second electrodes are electrically connected to each other on a first surface of the substrate, and at least one of the two of the second electrodes is electrically connected to one of the second electrodes adjacent to the at least one of the two of the second electrodes.
摘要:
An analog microphone and a control method thereof are disclosed. The analog microphone includes a sensor configured to sense an audio signal and convert the audio signal into an electrical signal; a charge pump configured to provide a bias voltage for the sensor to drive the sensor; a source follower configured to receive the electrical signal and convert the electrical signal into a source follower signal; a gain adjustable amplifier configured to receive the source follower signal, multiply the source follower signal by an amplifying factor, and output an amplified signal; and a detecting module configured to adaptively control the bias voltage of the charge pump and the amplified signal of the gain adjustable amplifier in response to the source follower signal of the source follower.
摘要:
An on-chip temperature sensing device is disclosed. The disclosed on-chip temperature sensing device is capable of sensing an environmental temperature of the chip. The device comprises a reference generating circuit, a first oscillator, a second oscillator, and an arithmetic logic unit. The reference generating circuit is configured to generate a first control voltage to control the first oscillator and the second oscillator. The bias current of the first oscillator and the bias current of the second oscillator are both controlled by the first control voltage so that the bias current of the first oscillator is directly proportional the bias current of the second oscillator regardless the environmental temperature. The first oscillator generates a first oscillation signal, while the second oscillator generates a second oscillation signal. The arithmetic logic unit may calculate the environmental temperature according to the first oscillation signal and the second oscillation signal.
摘要:
A touch input device provided in the present invention includes a pen tip, a pressure sensing module, a control unit and a PWM generator. The pen tip is utilized to touch a capacitive touchscreen and conduct a touchscreen driving signal. The pressure sensing module is utilized to generate a pressure sensing signal which corresponds to a pressure of the pen tip on the capacitive touchscreen. The control unit is utilized to receive the touchscreen driving signal and the pressure sensing signal, and then to generate a PWM control signal according to the pressure sensing signal. Further, a pulse width of the PWM control signal is proportional to the pressure. The PWM generator is utilized to provide a PWM signal to the pen tip according to the PWM control signal. A touch input system is further provided in the present invention.
摘要:
A touch input device provided in the present invention includes a pen tip, a pressure sensing module, a control unit and a PWM generator. The pen tip is utilized to touch a capacitive touchscreen and conduct a touchscreen driving signal. The pressure sensing module is utilized to generate a pressure sensing signal which corresponds to a pressure of the pen tip on the capacitive touchscreen. The control unit is utilized to receive the touchscreen driving signal and the pressure sensing signal, and then to generate a PWM control signal according to the pressure sensing signal. Further, a pulse width of the PWM control signal is proportional to the pressure. The PWM generator is utilized to provide a PWM signal to the pen tip according to the PWM control signal. A touch input system is further provided in the present invention.
摘要:
A method for increasing touch sampling rate and a touch display device using the same are provided, wherein the touch display device comprises a timing controller and a display panel. A timing control signal is provided by the timing controller. Each cycle of the timing control signal comprises a blanking period and a frame period, every N frame periods correspond to one image frame of a video signal, and every N blanking periods and every N frame periods correspond to one cycle of the video signal, where N is a positive integer larger than 1. Through the timing control signal, the touch display device arranges the timing for driving the display panel to display frame images and to sense touch, whereby increasing the touch sampling rate thereof.
摘要:
A noise reduction device and a noise reduction method are disclosed. The noise reduction device includes a DC removal unit for removing a DC component of a luminance; a first wavelet transform unit for performing a wavelet transform on an output of the DC removal unit for outputting a first low and high band signals; a first low and high band noise estimation units for estimating a first low and high band noise values; a first low and high band soft threshold processing units for forming a first low and high band noise reduction signals according to the first low and high band noise values; and a first inverse wavelet transform unit for performing an inverse wavelet transform on the first low and high band noise reduction signals. The present invention is capable of reducing or removing a noise in the luminance signal.
摘要:
An automatic self-calibrated oscillation method and an apparatus using the same are provided. After a static time tuning (STT) table and a run time tuning (RTT) table have been established, the apparatus converts an output clock signal to generate a current RTT value at every predefined time and then compares the current RTT value with a reference RTT value generated in response to a STT value of the STT table, or with an interpolated result generated in response to the reference RTT value to generate a deviation value. Thus, through the deviation value, the output clock signal may be calibrated to address the target frequency without the assistance of external reference clock unit or locked loop unit after the STT table and the RTT table are established.
摘要:
A method of reducing computation of palm rejection by projecting touch data is disclosed, targeting the handheld devices. The method targets first at obtaining a difference array, followed by extracting maximum values of rows and columns of the difference array to obtain a row projection list and a column projection list respectively. By repeated implementing of mutual capacitance detection, ghost palm blocks can be wiped out from the multiple palm blocks. Once integrating with a local spatial boundary detection algorithm, the sensed signals of intended input located within a rectangular palm block yet beyond a real palm block are consequently detected. The computational algorithm of the palm rejection of this invention is successfully built into the touch panel controller due to its substantially reduced computation.