| ALi Corporation Patent applications |
| Patent application number | Title | Published |
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| 20110103599 | AUDIO OUTPUT APPARATUS AND COMPENSATION METHOD THEREOF - An audio output apparatus including a digital operation unit, a digital-to-analog converter (DAC), a left channel unit, a right channel unit and a common unit is provided. During an initial setting, the digital operation unit detects a cross talk voltage on a left channel earphone unit in the left channel unit or a right channel earphone unit in the right channel unit, calculates a first ratio and a second ratio, and then performs an arithmetic operation on a left and a right channel signals according to the first and the second ratios, so as to obtain a compensated left channel signal and a compensated right channel signal respectively for eliminating a cross talk phenomenon. | 05-05-2011 |
| 20110058103 | METHOD OF RASTER-SCAN SEARCH FOR MULTI-REGION ON-SCREEN DISPLAY AND SYSTEM USING THE SAME - A method of raster-scan search for multi-region OSD and a system using the same are provided. The multi-region OSD is to be displayed on a screen after an alpha-blending of a mixer. The method includes at least following procedures. First, a global header search is executed in the first memory module for each or a portion of a plurality of search lines so as to determine a blending region and store header addresses of OSD regions in a second memory module. Next, whether there is a dummy region at the search line is determined. In addition, an alpha value for the dummy region, a dummy data of the dummy region and the OSD data of the OSD regions at the search line are transmitted to the mixer. | 03-10-2011 |
| 20100122114 | DATA PROTECTION METHOD FOR MEMORY - A data protection method is provided. The data protection method is adapted for a plurality of pages of a plurality of blocks in a memory. The data protection method records bit error weight values and erasing times of the blocks during routine operations of the memory. Therefore, when the system is in an idle status, the data of those blocks having higher bit error weight values can be recovered. Further, the data protection method moves data of those blocks having less erasing times to other blocks, so as to release the blocks having less erasing times from the data area for use. Then, the data protection method utilizes all blocks of the non-volatile memory in an average manner, so as to effectively protect the data saved in the memory and average the erasing operations. | 05-13-2010 |
| 20100103179 | ELECTRONIC DEVICE - Electronic devices with more than one video output terminals and capable of providing distinct videos at different video output terminals. The electronic device comprises first and second display processors driving first and second video output terminals, respectively. The first display processor comprises a blender and a multiplexer. The blender blends a video with image signals, provides a fully-blended video for the first video output terminal, outputs the video, the partly-blended videos and the fully-blended video to the multiplexer. The second display processor is coupled between the output terminal of the multiplexer and the second video output terminal. | 04-29-2010 |
| 20100087158 | FULL FREQUENCY SCANNING METHOD AND CHANNEL PARAMETER ADJUSTING METHOD FOR SMART ANTENNA - An adjusting method for a smart antenna is provided. The adjusting method divides all possible reading directions of the smart antenna into a plurality of scanning directions and a plurality of idle directions by a first form. In searching for the optimal parameters of each of a plurality of communication channels, the adjusting method firstly adjusts the reading direction according to the plurality of scanning directions, and then adjusts the reading direction according to the plurality of idle directions. Further, the first form remain updated in accordance the process of searching for the optimal parameters of each of the communication channels, thus effectively saving the time spent on the full frequency scanning process. Further, the optimal parameters of each of the communication channels are recorded in a second form, so that the smart antenna is regulated according to the second form. | 04-08-2010 |
| 20100079320 | DIGITAL TO ANALOG CONVERTER - A digital to analog converter (DAC) converting a digital code to an output voltage and capable of self calibration. The DAC includes a self-calibration signal generator generating a self-calibration signal based on the output voltage, a constant current generator, a first and a second current provider and a current-voltage converter. The current generating elements of the first and second current providers provide proportional currents, and are enabled/disabled according to the self-calibration signal and the digital code, respectively. The constant current is divided into the actual working current generating elements of the first current provider, and an output current is generated by the actual working current generating elements of the second current provider. The output current is converted to the output voltage by the current-voltage converter. | 04-01-2010 |
| 20100074348 | FINE SYMBOL TIMING SYNCHRONIZATION METHOD AND APPARATUS IN OFDM SYSTEM - A fine symbol timing synchronization method and apparatus in an orthogonal frequency-division multiplexing (OFDM) system are provided. The fine symbol timing synchronization method finds a path with a minimum mean square error (MMSE) as a first path among a plurality of paths, and a formula of the mean square error (MSE) used by the method is a simplified formula of the original MSE formula with low calculation complexity. Therefore, the time required by the fine symbol timing synchronization method is short, and a correct first path can be found, so as to lock a starting position of a fast Fourier transform (FFT) window on a starting position of a symbol signal of the correct first path. | 03-25-2010 |
| 20100062736 | AUTO GAIN CONTROLLER AND CONTROL METHOD THEREOF - An auto gain controller (AGC) and a control method thereof are provided. An input signal is amplified by a radio frequency (RF) amplifier and an intermediate frequency (IF) amplifier. When strength of the input signal is lower than a threshold, a gain curve of the RF amplifier is lowered while a gain curve of the IF amplifier is raised. When the strength of the input signal is greater than the threshold, a takeover point (TOP) of the IF amplifier is changed from a first takeover point to a second takeover point. | 03-11-2010 |
| 20100060654 | VIDEO PROCESSOR AND MEMORY MANAGEMENT METHOD THEREOF - Video processors and memory management methods thereof are provided, wherein the video processor is controlled by a central processing unit, and is coupled to a system memory to receive a macroblock. The video processor has two local memories, a control circuit and an image processing unit. The control circuit divides the macroblock into pixel segments, and disposes the pixel segments in the two local memories. The image processing unit accesses the two local memories for executing an image processing procedure. The system memory is refreshed by a processed macroblock in the two local memories. | 03-11-2010 |
| 20100053444 | SIGNAL PROCESSING CIRCUIT AND SIGNAL PROCESSING METHOD FOR REMOVING CO-CHANNEL INTERFERENCE - A signal processing circuit and a signal processing method for removing a co-channel interference from a digital signal are provided. The signal processing circuit employs an adaptive filter for estimating a co-channel interference in a received digital signal. The adaptive filter takes the digital signal having a symbol signal outputted from a slicer subtracted therefrom as an input thereof. As such, the output of the adaptive filter does not contain any symbol data. Therefore, when the outputted estimation signal is subtracted from the received digital signal, it won't introduce any inter-symbol interference. | 03-04-2010 |
| 20100050140 | Layout Method for a Chip - A layout method is provided, adaptable to place cell on a chip. Firstly, a chip area is assigned for a floor plan. A global reservation deployment process is then performed to define a plurality of room units to be uniformly distributed on the chip area. Cells are placed on the chip based on the floor plan. The chip area is categorized into at least a high frequency region and a low frequency region according to operation frequencies of the placed cells thereon. A frequency based reservation deployment process is then performed to move one or more room units distributed in the low frequency region toward the high frequency region. A local cell replacement process, a routing and timing analysis are performed. If hotspots are induced, room units around the hotspots are redistributed, and then the steps of local cell replacement, routing and timing analysis are repeated. | 02-25-2010 |
| 20100050128 | GENERATING METHOD AND USER INTERFACE APPARATUS OF MENU SHORTCUTS - A generating method and a user interface apparatus of menu shortcuts are provided. The present method is used for generating a menu shortcut list corresponding to a hierarchical content menu including a plurality of function items. When one of the function items in the content menu is selected, a frequency parameter of the selected function item is calculated and determined whether larger than a threshold. If the frequency parameter is larger than the threshold, a prompt is performed to remind the user whether to add the function item to the menu shortcut list. Then, the function item is added to the menu shortcut list according to a selecting signal input by the user. Accordingly, a process for setting the menu shortcuts can be simplified. | 02-25-2010 |
| 20100026543 | ANALOG TO DIGITAL CONVERTER - An analog to digital converter having an input stage amplifier array, an input stage voltage divider array, a comparator array and an encoder. The input stage amplifier array calculates and amplifies the difference between an input signal and a plurality of reference signals to generate a plurality of amplified differences. The input stage voltage divider array averages every two adjacent amplified differences to generate a plurality of average signals. The comparator array compares the average signals with a threshold value and outputs the compared results to the encoder for digital data representing the value of the input signal. | 02-04-2010 |
| 20090244948 | EMBEDDED MEMORY APPARATUS WITH REDUCED POWER RING AREA - An embedded memory apparatus with reduced power ring area is disclosed. In order to save the area consumption of a chip, a scheme for removing the power rings originally disposed in a memory core, or another scheme for sharing the power rings with other adjacent memory cores is provided. According to the preferred embodiment of the routing, the power strips originally bridging the inner elements and the outer power serve as the power source (VDD) and ground (VSS) respectively since the peripheral power ring surrounded the core is removed. Thus the area consumption is reduced as if the surrounded power ring shrinks inwardly. The shared power ring for the adjacent memory cores can also be another aspect for reducing the area. | 10-01-2009 |
| 20090236649 | EMBEDDED MEMORY DEVICE AND A MANUFACTURING METHOD THEREOF - An embedded memory device solves the problem of the low reliability of the circuit due to the unstable power source. The embedded memory includes a metal-oxide semiconductor (MOS) capacitor and a metal-insulator-metal (MIM) capacitor to increase the stability of the power source ring to stabilize the voltage of the embedded memory and stabilize the voltage for the peripheral circuit of the embedded memory. | 09-24-2009 |
| 20090231490 | METHOD AND SYSTEM FOR AUTOMATICALLY CHANGING CAPTION DISPLAY STYLE BASED ON PROGRAM CONTENT - A method for automatically changing caption display style based on program content is disclosed. Plural caption parameters for each program content type are pre-defined. When a TV program is switched, a program system information protocol (PSIP) is searched to confirm program content type of the TV program. Captions of the TV program are decoded using a caption decoder based on program content type and corresponding caption parameters and the captions of the TV program are displayed according to the caption parameters relating to the program content type. | 09-17-2009 |
| 20090167385 | PHASE LOCKED LOOP DEVICE AND CONTROL METHOD THEREOF - A phase locked loop device is provided. The phase locked loop device includes a phase/frequency detector, a charge pump, a low pass filter, a voltage-controlled oscillator, and a control unit. The phase/frequency detector generates a compared signal corresponding to a phase difference between a reference clock signal and a feedback clock signal. The charge pump coupled to the phase/frequency detector generates a pump current according to the compared signal. The low pass filter coupled to the charge pump generates an operating voltage corresponding to the pump current. The voltage-controlled oscillator coupled to the low pass filter generates an output clock signal in response to the operating voltage. The control unit coupled to the low pass filter and the voltage-controlled oscillator constrains the operating voltage to a predetermined voltage level when the frequency of the output clock signal is out of a predetermined frequency range. | 07-02-2009 |
| 20090151997 | CIRCUIT BOARD - An exemplary embodiment of a circuit board is provided. The circuit board is compatible to a first chip with a first pin number, and a second chip with a second pin number, comprising a plurality of first pads, second pads and third pads. The arrangements of the first and second pads are fit to the pin arrangement of the first chip, and the arrangements of the first and third pads are fit to the pin arrangement of the second chip. The first chip can be placed on the circuit board via the first and second pads, and the second chip can be placed on the circuit board via the first and third pads. | 06-18-2009 |
| 20090141607 | OPTICAL DISC DRIVE AND METHOD FOR PLAYING A FAST ROLLING MUSIC DISC - A method for playing a fast rolling music disc is provided. A music disc is read at an accelerated rate and played at a standard rate by discretely buffering data blocks into a ping pong buffer. Playing of a first data block stored in the first buffer, and buffering of a second data block into the second buffer are concurrently executed. When the playing of the first data block is concluded, the playing order of the first buffer and the second buffer are interchanged, and the concurrent playing and buffering step is repeated. Such that the second data block is played in the second buffer while a third data block is buffered into the first buffer. Discreteness between the second data block and the first data block is dependent on a skipping ratio, and the skipping ratio is dependent on the accelerated rate. | 06-04-2009 |
| 20090083470 | SYSTEM ON CHIP DEVICE AND METHOD FOR MULTIPLE DEVICE ACCESS THROUGH A SHARED INTERFACE - A system on chip device for communicating with a plurality of external devices is provided. The system on chip device comprises a plurality of host controllers, a shared interface and an arbiter. The plurality of host controllers with a plurality of protocols configures and drives the plurality of external devices. The shared interface coupled between the plurality of host controllers and the plurality of external devices comprise a plurality of data lines and plural sets of control lines, wherein the plurality of data lines are shared by the plurality of host controllers and the plural set of control lines are separately coupled to the plurality of host controllers. The arbiter is coupled to the plurality of host controllers for receiving a plurality of requests and granting one of the plurality of host controllers access to the corresponding external device through the shared interface in accordance with a priority scheme. | 03-26-2009 |
