Abstract: A touch sensor circuit and a touch device are provided. The touch sensor circuit includes a charging capacitor, a first current supplying unit, a second current supplying unit, and a switch unit. Wherein, the charging capacitor is serially connected between a detecting terminal and a reference voltage. The first current supplying unit is coupled to the detecting terminal, and receives a first bias voltage signal, and generates a first charging current at the detecting terminal according to the first bias voltage signal. A second current supplying unit is coupled to the detecting terminal, and receives a second bias voltage signal, and generates a second charging current at the detecting terminal according to the second bias voltage signal. The second terminal and the third terminal of the switch respectively supply the first and the second bias voltage signal.

Abstract: A touch sensor circuit and a touch device are provided. The touch sensor circuit includes a charging capacitor, a first current supplying unit, a second current supplying unit, and a switch unit. Wherein, the charging capacitor is serially connected between a detecting terminal and a reference voltage. The first current supplying unit is coupled to the detecting terminal, and receives a first bias voltage signal, and generates a first charging current at the detecting terminal according to the first bias voltage signal. A second current supplying unit is coupled to the detecting terminal, and receives a second bias voltage signal, and generates a second charging current at the detecting terminal according to the second bias voltage signal. The second terminal and the third terminal of the switch respectively supply the first and the second bias voltage signal.

Abstract: A digital adjustable chip oscillator comprises a voltage control oscillator, a reference voltage circuit, a voltage regulation circuit, a digital tuning circuit, a frequency detector and a programmable controller. The oscillator generates an oscillation signal and receives a control voltage and an operating voltage from the voltage regulation circuit and the reference voltage circuit to stabilize and adjust the frequency of oscillation signal. The digital tuning circuit receives a digital code stored in a programmable memory to adjust the control voltage. The frequency detector detects and compares the frequency of oscillation signal with a first and second frequency, wherein when the frequency of the oscillation signal lies between the first and second frequency, the frequency detector outputs a high voltage signal and otherwise the frequency detector outputs a low voltage signal. The programmable controller receives the high voltage signal to stop a programmable counter to acquire the digital code.

Abstract: The present invention provides a method to convert the conventional two-channel uncoded audio system into multichannel system. There is no coding/decoding procedure in the invention, but just process the phases of the original two audio channels to provide different audio sources for surrounding distribution and achieve the best effect of reproducing the original audios. The present invention also provides an audio processor for implementing the method.

Abstract: The present invention provides a method to convert the conventional two-channel uncoded audio system into multichannel system. There is no coding/decoding procedure in the invention, but just process the phases of the original two audio channels to provide different audio sources for surrounding distribution and achieve the best effect of reproducing the original audios. The present invention also provides an audio processor for implementing the method.

Abstract: A new structure for an echo IC that employs a DRAM, so as to have the function of a shift register. The number of transistors in a storage cell is reduced, and only a single type of transistor (e.g. NMOS or PMOS) is used, so as to simplify the manufacturing process, decrease the volume of echo IC dramatically, and reduce the cost. The matrix of storage cells and related clock signals are rearranged so that and the amplitude of power spikes can be lowered to decrease noise, the frequency of power spikes is also increased so that a low cost filter can be employed.

Abstract: An integrated RC oscillator circuit includes a reference voltage generator, a fine tuner, a charging/discharging oscillator, a frequency counter, and a comparator. The reference voltage generator generates stable reference voltages Vref, Vref 1 to Vref 31, 3/4Vref and 1/2Vref. The fine tuner receives as inputs a reset signal, Vref and Vref 1 to Vref 31 and outputs a reference voltage PVref (0<P<1). The charging/discharging oscillator receives as inputs an enable signal, PVref, Vref, 3/4Vref and 1/2Vref and outputs a square wave signal whose frequency is determined by a resistor, a capacitor and the value of P. The frequency counter receives as inputs the reset signal, a timing reference clock and the square wave signal, it counts the frequency of the square wave signal and outputs the frequency value, and it also outputs a PROGRAM signal to the fine tuner.