| Patent Number |
Title Of Patent |
Date Issued |
| 7609239 |
Display control system of a display panel and control method thereof |
October 27, 2009 |
| When electric current is provided to a scan line of a display panel, electric current flowing from an initial end to a final end of the scan line is gradually reduced because of resistance consumption, resulting in lower brightness on both left and right sides of the display panel. T |
| 7605771 |
Image-processing system capable of controlling multiple display devices |
October 20, 2009 |
| An image-processing system includes a power source, a plurality of signal processing circuits, and a plurality of switching units. The power source provides power to the image-processing system. The signal processing circuits, each including a first input end, a second input end and an |
| 7586470 |
OLED device capable of adjusting luminance |
September 8, 2009 |
| An OLED device includes a control voltage generator, a plurality of the first switches, a current mirror, a plurality of transistors, a control circuit, a second switch and an OLED equivalent module. The control voltage generator generates control voltage to the plurality of transist |
| 7583042 |
Device and method for driving a single phase motor |
September 1, 2009 |
| A driving device is provided for controlling the rotation of a motor. The driving device comprises an input module, a comparing module and a processing module. The input module includes a voltage generating unit and a voltage adjusting unit to generate a comparing voltage. The voltage |
| 7577293 |
Image compensation device and method |
August 18, 2009 |
| An image compensation method. A color space conversion operation is implemented in a pixel of a source image to convert first image signals corresponding to the pixel to second image signals corresponding to a color space plane. The color space plane comprises a skin color axis compr |
| 7573316 |
Control apparatus |
August 11, 2009 |
| A control apparatus comprises a voltage source, a controlling unit and an enabling unit. The controlling unit receives an input signal and generates an output signal. The enabling unit controls whether the controlling unit generates the output signal or not according to an enabling s |
| 7567127 |
Automatic-gain control circuit |
July 28, 2009 |
| An automatic-gain control circuit includes a variable-gain amplifier, a peak-detecting circuit, and an adjustable charge/discharge circuit. The variable-gain amplifier receives an input signal and adjusts the input signal based on a gain-factor control signal for generating a corresp |
| 7564277 |
Control circuits |
July 21, 2009 |
| A control circuit for controlling a motor. The control circuit includes a control module, a current transformation module and a comparison module. The control module generates a control current and a comparison voltage according to a first current, a first voltage and an input voltage. T |
| 7564232 |
Charging circuit and control method and integrated circuit utilizing the same |
July 21, 2009 |
| A charging circuit for a bridge tied load (BTL) including an amplifier and a load driven by the amplifier according to a voice signal and a reference voltage stored in a reference capacitor. The charging circuit comprises a power supply and a comparison unit. The power supply provides |
| 7543196 |
Apparatus for testing integrated circuit |
June 2, 2009 |
| An apparatus for testing integrated circuits is disclosed. The apparatus for testing integrated circuits comprises an integrated circuit and a tester. The integrated circuit undergoing testing receives an input signal, and outputs an output signal from a first output terminal or a se |
| 7541856 |
Baseline wandering correction device and related method |
June 2, 2009 |
| The invention discloses baseline wandering correction techniques. A baseline wandering correction device comprises a differentiator differentiating a data signal to generate a differentiated signal, a operation signal coupling to the differentiator and proceeding with an operation ba |
| 7519436 |
Button device |
April 14, 2009 |
| A button device comprising a voltage source and a plurality of buttons is provided. The button device further comprises: a charging module, a loading capacitor, a control module, and an MCU. The charging module provides a plurality of charging paths. At least one charging path is con |
| 7519190 |
Circuit for reducing pulse noise caused at switching of an analog audio processing circuit |
April 14, 2009 |
| A noise reduction circuit for reducing pulse noise caused at switching of an analog audio processing circuit comprises a voltage division resistor circuit, an end of the voltage division resistor circuit being electrically connected to an output end of a switching circuit of the anal |
| 7486146 |
Loop system capable of auto-calibrating oscillating frequency range and related method |
February 3, 2009 |
| A loop system capable of auto-calibrating an oscillating frequency range includes a frequency error detector, a voltage controlled oscillator (VCO), a voltage input unit, and a switch. The frequency error detector includes a rotational frequency detector, a state machine, and an up-down |
| 7471727 |
Integrated serial data decoder |
December 30, 2008 |
| The present invention provides a serial data decoder without capacitor that can be made in the form of an integrated circuit without any additional external device. The integrated serial data decoder comprises a clock generator, a frame detector and a channel decoder. Demodulated ser |
| 7463082 |
Light emitting device and current mirror thereof |
December 9, 2008 |
| A current mirror has a first transistor and a second transistor. Current through the first and second transistors are an input current and an output current, respectively. The ratio of the output current to the input current is constant. The first and second transistors have the same |
| 7420422 |
Audio amplifier driven by single voltage source and related voltage supply circuit |
September 2, 2008 |
| After coupling a first voltage source to a voltage supply circuit, a second voltage source having a same electrical level but an opposite electrical pole with said first voltage source is generated. An audio amplifier is then driven by both the first voltage source and the second vol |
| 7417573 |
Sigma-delta circuit and related method with time sharing architecture |
August 26, 2008 |
| A sigma-delta circuit with time sharing architecture includes a coefficient generation element, a sigma-delta processing element, and a storage element. The coefficient generation element is used for generating coefficients for sigma-delta operations. The sigma-delta processing eleme |
| 7397304 |
Auto gain control circuit |
July 8, 2008 |
| An auto gain control circuit comprises a first peak detector, a variable gain amplifier, a second peak detector, a multiplexer and a controller. The first peak detector detects peaks of an input signal to generate a first peak signal. The variable gain amplifier amplifies the input signa |
| 7392447 |
Method of using scan chains and boundary scan for power saving |
June 24, 2008 |
| The invention provides a method and circuitry to save power in a synchronous logic ASIC with low overhead. The scan chain(s) and boundary scan mechanism of the synchronous logic ASIC are used and modified for shifting out current states of internal memory devices of the synchronous l |
| 7383477 |
Interface circuit for using a low voltage logic tester to test a high voltage IC |
June 3, 2008 |
| The present invention provides an interface circuit for using a low voltage logic tester to test a high voltage IC. The interface circuit is between the high voltage IC and the low voltage logic tester, and is used for converting each output of the high voltage IC to a voltage level that |
| 7265498 |
Dimmer control system and controlling method thereof |
September 4, 2007 |
| A system for controlling illumination of a fluorescent lamp includes a silicon controlled rectifier (SCR) control circuit receiving a first signal of a power source and generating an adjustment signal. A charge pump circuit receives a charge pump signal, a second signal of the power |
| 7259616 |
Method for single-ended offset compensation of an operational amplifier |
August 21, 2007 |
| The present invention provides a method for single-ended compensation of an operational amplifier, which comprises: designing an operational amplifier having a single-ended offset style, preparing a common-mode circuit, a switch circuit, a comparator, a digital circuit and a compensa |
| 7224010 |
Voltage-controlled amplifier for a signal processing system |
May 29, 2007 |
| A voltage-controlled amplifier for a signal processing system includes an input voltage reception end, a first voltage-to-current converter, a reference current generator, a gain adjustment circuit, a first current mirror, and an output circuit. The voltage-controlled amplifier adjusts a |
| 7209003 |
Asynchronous BTL design for a Class-D audio amplifier |
April 24, 2007 |
| The present invention provides an asynchronous BTL (Bridge Tied Load) design for a Class-D audio amplifier. The Class-D audio amplifier comprises two independent signal routes, each of the two independent signal routes includes a PWM (Pulse Width Modulator), a predriver and a power M |
| 7126416 |
Pulse amplitude modulation (PAM) method and circuit for improving the performance of a D-class a |
October 24, 2006 |
| The present invention provides a PAM (Pulse Amplitude Modulation) method and circuit for improving the performance of a D-class audio amplifier. The D-class audio amplifier is inputted with a PWM signal and designed to have a dead time function for time delay. In order to decrease the |
| 7123492 |
Circuit for reducing inrush current generated during startup of a switching power supply |
October 17, 2006 |
| A circuit for reducing inrush current generated during startup of a switching power supply, which includes a reference voltage generator, an error amplifier, an oscillator, a sawtooth wave generator, a PWM comparator, an overshoot comparator, an AND gate, a R-S flip-flop, a power MOS |
| 7122990 |
Digital servo motor controller IC design for preventing the power feedback effect during manual |
October 17, 2006 |
| The present invention provides an improvement design for a digital servo motor controller IC to prevent the power feedback effect during manual adjusting the servo motor. A circuit is added at each output of the digital servo motor controller IC. The added circuit comprises a divider |
| 7102414 |
Muting circuit for audio amplifier |
September 5, 2006 |
| A muting circuit for an audio amplifier comprises differential pairs of MOS transistors in a differential amplifier and two sets of MOS transistor switch to control the differential pairs respectively. The differential pairs are connected with a current mirror circuit and the two set |
| 7042269 |
Method for dynamic balancing of a clock tree |
May 9, 2006 |
| The present invention provides a method to balance a clock tree dynamically. A controllable buffer is inserted in a specific level of a clock tree, and a controller is provided for adjusting two clocks with different skew by controlling the PMOS/NMOS arrangements in the controllable |
| 6965333 |
Circuit for using capacitor voltage divider in a delta-sigma digital-to-analog converter to gene |
November 15, 2005 |
| An improved circuit for a delta-sigma digital-to-analog converter comprises integrating operational amplifier, sampling capacitors, integrating capacitor, and a voltage divider consisting of a plurality of sampling capacitors. Three trigger signals of different phases are designed to |
| 6928176 |
Switching circuit built in IC for earphone and loudspeaker of portable information device |
August 9, 2005 |
| The present creation is to provide a switching circuit built in IC for earphone and loudspeaker of portable information device, and there is no any passive component outside the IC, thus making the circuit board assembly more easily, saving the area of the circuit board, decreasing the |
| 6442636 |
Parallel bus system capable of expanding peripheral devices |
August 27, 2002 |
| A parallel bus system for enabling the addition of peripheral devices includes a central processing unit, at least one peripheral device, and a parallel bus for connecting the central processing unit and the at least one peripheral device. One line of the parallel bus is used as the |
| 4912463 |
Remote control apparatus |
March 27, 1990 |
| A remote control apparatus has a transmitter which is capable of being switched between a normal position and a changing position, and a receiver which is capable of being switched between a normal mode and a changing mode. The remote control apparatus utilizes a first memory device in t |
