Patent application number | Description | Published |
20100180049 | Image Processing Method and Image Display System - An image processing method applied to an image display system is provided. The image processing method comprises generating a statistic data according to a transmitting time of at least one image from an image transmitting end to an image receiving end and a processing time for displaying the at least one image at the image receiving end, generating a parameter data according to a predetermined time interval and the statistic data, transmitting the parameter data from the image receiving end to the image transmitting end, and adjusting an appointed image according to the parameter data to generate an adjusted image, and transmitting the adjusted image from the image transmitting end to the image receiving end. Accordingly, images are displayed on the image display system at a constant interval. | 07-15-2010 |
20120017219 | Multi-CPU Domain Mobile Electronic Device and Operation Method Thereof - A multi-CPU domain mobile electronic device, includes: a first CPU domain, comprising at least a first migration agent unit, the first migration agent unit detecting a task migration condition, determining whether to migrate a migratable task, and sending an associated migration event, and a second CPU domain, comprising at least a second migration agent unit, the second migration agent unit receiving the migratable task from the first migration agent unit. | 01-19-2012 |
Patent application number | Description | Published |
20110057696 | Frequency Calibration Apparatus of Phase Locked Loop and Method Thereof - A frequency calibration apparatus, applied to a phase locked loop (PLL), includes a frequency detecting module and a search module. The frequency detecting module includes a first counter, a second counter and a comparing unit. During a monitoring period, the first counter and the second counter respectively generates a first count and a second count. The comparing unit compares the first count with the second count to generate a comparison result indicating at least three situations. The search module selects a frequency curve in response to the comparison result, and calibrates configuration of a voltage controlled oscillator (VCO) according to the frequency curve. | 03-10-2011 |
20110080196 | VCO Control Circuit and Method Thereof, Fast Locking PLL and Method for Fast Locking PLL - A voltage-controlled oscillator (VCO) control circuit, used for controlling a VCO to process phase locking procedure after receiving a frequency locking signal, comprises an operating frequency controller and a judgment unit. The operating frequency controller, coupled to the VCO and the judgment unit, generates one of a first control code and a second control code to the VCO. The judgment unit, coupled to an input end of the VCO, generates a phase locking signal according to a voltage control signal inputted to the VCO. When the operating frequency controller receives the frequency locking signal, the operating frequency controller generates a first control code to control the VCO to switch from a first candidate VCO curve to a second candidate VCO curve. When the operating frequency controller receives the phase locking signal, the operating frequency controller generates a second control code to control the VCO to switch from the second candidate VCO curve to the first candidate VCO curve. | 04-07-2011 |
20110080199 | Bandwidth Control Apparatus for Phase Lock Loop and Method Thereof - A loop bandwidth control apparatus applied to a phase locked loop (PLL) includes a first loop filter module, a second loop filter module, a control module, a first switching module, and a second switching module. The first filter module and the second loop filter module output a first voltage and a second voltage, respectively. The second loop filter module has a bandwidth different from that of the first loop filter module. According to one of the first voltage and the second voltage, the control module generates a bandwidth control signal. According to the bandwidth control signal, the first switching module forms a path between a charge pump and one of the first loop filter module and the second loop filter module, and the second switching module forms a path between a voltage-controlled oscillator (VCO) and one of the first loop filter module and the second loop filter module. | 04-07-2011 |
20110122965 | Offset Phase-Locked Loop Transmitter and Method Thereof - An offset phase-locked loop (PLL) transmitter comprises a clock generator that generates a first clock signal; a detector that detects a phase difference between an input data signal and a feedback data signal to generate a control signal; a controlled oscillator, coupled to the detector, that generates an output data signal according to the control signal; a mixer, coupled to the controlled oscillator and the clock generator, that mixes the output data signal according to the first clock signal to generate the feedback data signal; and a control circuit, coupled to the detector and the controlled oscillator, that adjusts the operating frequency curve of the controlled oscillator by one of a first step distance and a second step distance smaller than the first step distance such that the control signal is substantially equal to a predetermined value. | 05-26-2011 |
20110158356 | Apparatus and Method for Determining Signal Power - An apparatus for determining signal power comprise an oscillating circuit and a determining circuit. The oscillating circuit generates an oscillating signal. When a to-be-detected signal has signal power greater than a threshold, the oscillating signal has a first frequency; when the signal power is smaller than the threshold, the oscillating signal has a second frequency. The determining circuit determines whether the oscillating signal has either the first frequency or the second frequency, and generates a determination result accordingly. | 06-30-2011 |
20140118081 | Multiplexed Configurable Sigma Delta Modulators for Noise Shaping in a 25-Percent Duty Cycle Digital Transmitter - A modulator generates a baseband digital signal from an information-bearing digital signal. The baseband signal has time-varying phase and amplitude defined by a sequence of complex data words, each having an in-phase (I) component and a quadrature (Q) component. A noise-shaping modulator generates a noise-shaped digital signal from the baseband digital signal such that quantization noise in the noise-shaping modulator is attenuated by a spectral null of its noise transfer function. The spectral null is selected by a noise-shaping parameter corresponding to a selected one of a plurality of output frequencies. A signal converter generates an analog signal conveying the information of the information-bearing digital signal on an analog carrier signal having the selected output frequency. | 05-01-2014 |
20140364067 | COMMUNICATION CIRCUIT AND ASSOCIATED CALIBRATION METHOD - A communication circuit includes a receiver path, a frequency translating loop filter and a signal source circuit. The frequency translating loop filter includes an auxiliary mixer, and a frequency translating filter backend circuit such as a filter. The signal source circuit can be shared with a transmitter path. When the receiver path receives an external signal, the auxiliary mixer and the frequency translating filter backend circuit perform high-frequency filtering. When the receiver path need not receive the external signal, the auxiliary mixer up-converts a low-frequency auxiliary signal provided by the signal source circuit to a high-frequency domain, and the up-converted signal is received by the receiver path. Thus, an operation parameter of the receiver path can be adjusted and calibrated according to a response of the receiver path. | 12-11-2014 |
Patent application number | Description | Published |
20100117987 | TOUCH SENSING METHOD AND ASSOCIATED CIRCUIT - A touch sensing method and associated circuit are provided. In one aspect, a touch control circuit includes a first current source, a second current source, a plurality of switches, a hysteresis comparator, a frequency divider and a flip-flop. The switches are couple to a plurality of external contact points. The hysteresis comparator is coupled to a first reference comparison voltage and a second reference comparison voltage. Each of the external contact points is selectively coupled to an input terminal of the hysteresis comparator through the switches. The first current source and the second current source are coupled to the input terminal of the hysteresis comparator to generate a sensing voltage. The hysteresis comparator compares the sensing voltage with the first reference comparison voltage and the second reference comparison voltage to generate a hysteresis comparison output to control the first current source or the second current source. | 05-13-2010 |
20100253550 | Digitizing Apparatus, Digitizing Method and Capacitance Touch Sensing Apparatus - A digital apparatus includes a timing control circuit, a period counter, a phase digitizer and a calculation circuit. The timing control circuit generates a first control signal according to a square wave signal and a predetermined value. The period counter generates a first digital value according to a reference clock signal and the first control signal. The phase digitizer generates a second digital value according to a phase difference between the square wave signal and the reference clock signal. The calculation circuit generates an output digital value according to the first digital value and the second digital value. An object of obtaining a high-resolution digitization with a reasonable sampling clock is realized by effectively combining the period counter with the phase digitizer. | 10-07-2010 |
20110025644 | Touch Control Apparatus, Associated Sensing Control Apparatus and Method Thereof - A touch control apparatus includes a touch panel and a sensing control apparatus. The touch panel includes a plurality of sensing lines, and the sensing control apparatus includes a plurality of pins that are respectively coupled to the sensing lines. The sensing control apparatus adaptively controls a sequence for scanning the pins according to connection relationships between the pins and the sensing lines. | 02-03-2011 |
20140111267 | LEVEL SHIFTER AND OPERATIONAL AMPLIFIER - A level shifter includes a signal receiving module, including at least one signal receiving end for receiving at least one input signal and being conducted or non-conducted according to the input signal; a level adjusting module, configured to generate the adjusted output signal according to the input signal, wherein the level adjusting module includes a first connection end and a second connection end, the second connection end is coupled to the signal receiving module; and a switch module, including a first end coupling to the first connection end and a second end coupling to the second connection end. If the switch module is conducted, an current path is formed between the first connection end, the second connection end and the signal receiving module through the switch module. If the switch module is not conducted, current is blocked from flowing from the first connection end to the second connection end. | 04-24-2014 |