Realtek Semiconductor Inc.

Sun-castle Global Precision Technology Co., Ltd.

Chung-Ming Tseng

Chien-Ming Wu

Shih-Hsiung Huang

Chun-Hsiung Chang

Shun-Ta Wu

Tien-Chun Lan

An analog front-end circuit capable of dynamically adjusting gain includes a programmable gain amplifier (PGA) circuit, a sensor, a calculation circuit, a gain coarse control circuit and a gain fine control circuit. The PGA circuit includes an amplifier, a gain coarse adjustment circuit and a gain fine adjustment circuit. The gain coarse adjustment circuit is controlled by a coarse control signal, and a gain is adjusted in a coarse step according to an initial gain. The gain fine adjustment circuit is controlled by a fine control signal in a data mode, and the gain is adjusted in a fine step. The calculation circuit calculates a primary gain adjustment and a secondary gain adjustment. The gain coarse control circuit generates the coarse control signal according to the primary gain adjustment, and the gain fine control circuit generates the fine control signal according to the secondary gain adjustment.

Analog front-end circuit capable of dynamically adjusting gain

An analog-to-digital conversion system includes an analog-to-digital converter and a power supply. The analog-to-digital converter is configured to convert an analog input signal to generate a digital output signal, and configured to generate a control signal according to a state of converting the analog input signal. The power supply is configured to provide a supply voltage to the analog-to-digital converter, and change the ability to provide the supply current of the power supply according to the control signal to stabilize the supply voltage.

Analog-to-digital conversion system for stabilizing supply voltage and method of the same

The present disclosure discloses a communication apparatus including a receiver circuit and a transmitter circuit having a signal processing circuit and a DAC circuit having a primary conversion circuit and a first hybrid conversion circuit. The primary conversion circuit converts and transmits a transmission signal from the signal processing circuit to a signal transmission path. The first hybrid conversion circuit converts the transmission signal to a first receiver resistor to generate a voltage drop. The receiver circuit receives a first actual receiving signal through the signal transmission path and the first receiver resistor. The primary conversion circuit operates according to a first current including a first and a second part currents and the first hybrid conversion circuit operates according to a second current. The first part current does not change according to a resistive change. The second part current and the second current change according to the resistive change.

Communication apparatus and digital to analog conversion circuit thereof

An electronic lock includes a mechanism comprising a drive assembly comprising a pinion, a gearwheel including a peripheral flange having openings with a curved edge; a clutch comprising a ring including risers in the openings to engage with the curved edges, a first sleeve in the ring and including a rear projection, a driven member including a groove disengaged from the corresponding projection when the lock is locked, and a first spindle, and a spring put on the first sleeve and urged against the driven member; a second sleeve securely urged against the first sleeve; and a second spindle securely passing the second sleeve into the first sleeve. Turning the pinion will turn the gearwheel, push the risers rearward by sliding along the curved edges, move the ring rearward to fit the projection into the groove, and compress the spring such that turning an outer handle will unlock the lock.

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Taichung, Taiwan

Chung-Ming Tseng