Abstract: A transmitter is provided. the transmitter includes a hybrid feedback circuit and a hybrid driving circuit. The hybrid feedback circuit compares a reference voltage with a feedback voltage in closed-loop, determines whether to perform polarity reversal according to a mode control signal, controls power output according to a comparison result and the mode control signal, and generates a first output signal. The hybrid driving circuit, coupled to the hybrid feedback circuit, receives the first output signal of the hybrid feedback circuit, generates a transmitter output signal according to an input data, and generates a second output signal according to the transmitter output signal. The first output signal and the second output signal are transmitted back to the hybrid feedback circuit.

Abstract: A transmitter is provided. the transmitter includes a hybrid feedback circuit and a hybrid driving circuit. The hybrid feedback circuit compares a reference voltage with a feedback voltage in closed-loop, determines whether to perform polarity reversal according to a mode control signal, controls power output according to a comparison result and the mode control signal, and generates a first output signal. The hybrid driving circuit, coupled to the hybrid feedback circuit, receives the first output signal of the hybrid feedback circuit, generates a transmitter output signal according to an input data, and generates a second output signal according to the transmitter output signal. The first output signal and the second output signal are transmitted back to the hybrid feedback circuit.

Abstract: The present invention provides an image brightness non-uniformity correction method and an image brightness correction device therefor. The image brightness non-uniformity correction method includes the steps of: (A) generating an initial input image having pixels arranged in a matrix, wherein each pixel has a corresponding pixel brightness and the initial input image has non-uniform brightness; (B) performing a pre-processing procedure on the initial input image, to generate a pre-processed image; (C) performing an image gradient correction procedure on the pre-processed image, to eliminate non-uniformity of the brightness of the initial input image; and (D) outputting an output image having an uniformity-processed brightness.

Abstract: An image sensing method includes: emitting light to a object to generate an image; providing a sensing device, which has plural sensor units arranged by plural columns and plural rows; receiving the image by the sensing device by way of rolling exposure; controlling a rolling shutter, such that when the sensing device receives the image by way of rolling exposure, the exposure time of at least one sensor row is adaptively determined.

Abstract: A real-time heart rate detection method for use in a real-time heart rate detection system includes: (A) emitting light to a finger to generate reflected light; (B) receiving the reflected light via a sensing unit, to generate at least one initial fingerprint image; (C) generating plural initial waveform information according to the at least one initial fingerprint image; (D) selecting one among plural different bandpass filters, to filter the initial waveform information; (E) calculating an initial heart rate based upon the filtered initial waveform information; (F) checking and computing a frequency range of the obtained initial heart rate, to determine which one of the plural bandpass filters is the most preferable bandpass filter; (G) outputting a final heart rate; and repeating the step (A) to the step (G). The step (G) and the step (F) are performed at least partially in parallel.

Abstract: A fingerprint detection apparatus, a mobile device using the same and a manufacturing method thereof are provided. The fingerprint detection apparatus comprises an image sensing integrated circuit and a spatial filter disposed on the image sensing integrated circuit. The spatial filter has adjacent light tunnels for restricting an incident angle of light to the image sensing integrated circuit to prevent scattered light from entering the image sensing integrated circuit.

Abstract: A fingerprint detection apparatus, a mobile device using the same and a manufacturing method thereof are provided. The fingerprint detection apparatus comprises an image sensing integrated circuit and a spatial filter disposed on the image sensing integrated circuit. The spatial filter has adjacent light tunnels for restricting an incident angle of light to the image sensing integrated circuit to prevent scattered light from entering the image sensing integrated circuit.

Abstract: A fractional-N frequency synthesizer with low quantization noise includes a phase frequency detector, a charge pump, a loop filter, a voltage controlled oscillator a divider and a Delta-Sigma modulator. The Delta-Sigma modulator computes “N” to the loop filter in the output current of the charge pump. Quantization step size in the form of current is narrowed, and that reduces the absolute energy of quantization noise reduced, resulting in wider loop bandwidth which has advantages for the fractional-N frequency synthesizer over the lock time, energy saving, and alleviates voltage controlled oscillator design constraints. Even more, frequency synthesizer achieves high frequency transmission in direct modulation transmitter.

Abstract: A voltage-controlled oscillator with high loop gain includes a first transistor, a second transistor, an inductor, a third transistor, a fourth transistor and a gain circuit. The gain circuit provides a high loop gain in the voltage-controlled oscillator, which operates at wider tuning range but with low power consumption due to capacitance value provided by transistors thereof.