Patents Assigned to Sunplus Technology Co., Ltd.
  • Display frequency boosting system for increasing image display frequency
    Publication number: 20100277643
    Abstract: A display frequency boosting system for increasing image display frequency includes a buffer to receive a first frame, a second frame, and a third frame of image data and store the frames in a form of zero to fifth fields, a motion estimation device to perform a motion estimation on the fields to produce a motion vector, an interpolator connected to the buffer to perform an interpolation on the fields to produce an interpolated field, a motion compensation device to perform a motion compensation according to the motion vector, the fields and the interpolated field to produce sixth and seventh fields, and a controller to control read and write operations of the buffer, wherein each frame is composed of an odd field and an even field, and a fourth frame corresponding to the sixth and the seventh fields locates between the first and second frames in a display time axis.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 4, 2010
    Applicant: Sunplus Technology Co., Ltd.
    Inventor: Te-Sung Su
  • Dynamic element matching digital/analog conversion system and sigma-delta modulator using the same
    Publication number: 20100277355
    Abstract: A dynamic element matching sigma-delta modulator includes an adder to receive an analog input signal and a feedback signal to generate an error signal; a loop filter to generate a filtered signal according to the error signal; a quantizer to change the filtered signal into a quantized output signal; a digital/analog converter (DAC) having a plurality of digital/analog elements to generate the feedback signal corresponding to the quantized output signal; and a dynamic element matching device to receive the quantized output signal to accordingly set an element of the DAC to be a previous non-participant element and the other elements to be previous participant elements, and reselects participant elements according to the quantized output signal and the previous participant elements for further generating the feedback signal corresponding to the quantized output signal.
    Type: Application
    Filed: May 4, 2010
    Publication date: November 4, 2010
    Applicant: Sunplus Technology Co., Ltd.
    Inventor: Chih Wei Chen
  • Method for object edge detection in macroblock and method for deciding quantization scaling factor
    Patent number: 7826533
    Abstract: A method for object edge detection in a macroblock and a method for deciding quantization scaling factor are disclosed. This method calculates and compares the pixel means and means of absolutely difference of a plurality of pixel blocks in a macroblock to achieve the purpose of detecting if there is an object edge or flat area in a macroblock. In the meantime, the image structure of macroblock is analyzed and classified and its related messages are used for bit rate control, such that the visual effect of the compressed image can be appropriately enhanced.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: November 2, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: Pai-Chu Hsieh, Tzu-Hsin Wang, Chien-Yu Lin
  • METHOD FOR DETERMINING TYPE OF DISK AND APPARATUS THEREOF
    Publication number: 20100271918
    Abstract: A method for determining a type of a disk and an optical storage apparatus thereof are provided. The method includes when the disk placed in the optical storage device is not a blank disk, determining whether the phases between a first signal and a second signal of the disk are the same or not; and determining that the disk is a low to high (LTH) data disk or a high to low data disk (HTL) data disk upon whether the phases of the first signal and the second signal are the same or not. Therefore, the reading parameters are correspondingly loaded in the optical storage device according to the type of the disk.
    Type: Application
    Filed: August 4, 2009
    Publication date: October 28, 2010
    Applicant: SUNPLUS TECHNOLOGY CO., LTD.
    Inventors: Wen-Chun Feng, Yen-Chien Cheng
  • Image signal processing device
    Patent number: 7817207
    Abstract: An image signal processing device, which uses a horizontal synchronizing signal detector to find a frequency (period) of an original horizontal synchronizing signal from an external input horizontal synchronizing signal and provide an internal reference horizontal synchronizing signal with the same frequency same as the original horizontal synchronizing signal to a horizontal synchronizing signal output controller for determining to output the external input horizontal synchronizing signal according to the frequency of the internal reference horizontal synchronizing signal and filtering out the original horizontal synchronizing signal.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: October 19, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventor: Yu-Yu Sung
  • Power control apparatus and method for an optical drive
    Patent number: 7808871
    Abstract: A power control apparatus and method for an optical drive is disclosed. The power control apparatus estimates the temperature rising effect of a laser diode and performs a partial open-loop power control, achieving accurate write power control. Therefore, regarding to a high-speed, high-density optical disk recording medium combined with multi-pulse write waveforms, the invention can also achieve accurate write power control even though the response speed of a front photodiode is much slower than the modulation speed of recording pulses of the laser diode.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: October 5, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: Hsin Po Wang, Lu Chia Tseng, Shu Ming Chang
  • Method and system for adaptive motion estimation
    Patent number: 7809063
    Abstract: A method and system for adaptive motion estimation, which sets a search range in a previous frame in order to find a corresponding macroblock in the adaptive search range according to each macroblock of a current frame and to accordingly determine a corresponding motion vector. A motion vector is first determined by referring to a target macroblock of a current frame and reference macroblocks in a search range of a previous frame. Then, a compression mode is determined according to the target macroblock, the reference macroblocks and the motion vector, and a mode data is outputted corresponding to the compression mode. Finally, a search range is determined according to the mode data and the motion vector. Thus, the required computational amount and bandwidth can be saved and also the high-efficiency image compression is obtained.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: October 5, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventor: Chun-Hung Lin
  • Error correction code decoder
    Patent number: 7805662
    Abstract: An ECC decoder for correcting a coded signal received, which includes a syndrome calculation and errata evaluation device to receive a code word of the coded signal for performing a syndrome calculation to thereby output a syndrome polynomial, and to receive an erasure and errata evaluator polynomial and an errata position for performing an errata evaluation to thereby output an errata and erasure value and correct the coded signal; a key equation solving device to receive the syndrome for generating an erasure and errata locator polynomial and the erasure and errata evaluator polynomial; and an errata position search device to receive the erasure and errata locator polynomial for searching and outputting the errata position. Evaluating the errata and erasure value and calculating the syndrome are performed in pipeline, thereby sharing the hardware and relatively reducing the hardware cost.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: September 28, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: Ching-Wen Ma, Kuo-Ming Wang, Jia-Ping Chen
  • Wireless receiver system and method with automatic gain control
    Publication number: 20100235707
    Abstract: A wireless receiver system with automatic gain control, which includes a receiving path, an analog to digital converter, an automatic gain control (AGC) device and a controller. The controller has an adjacent channel interference off mode, an adjacent channel interference acquisition mode and an adjacent channel interference tracking mode to accordingly set the AGC device for adjusting the gains of a plurality of modules of the receiving path. Namely, the strengths of different adjacent channel interferences are appropriately adjusted to thereby obtain the best received signal quality.
    Type: Application
    Filed: March 31, 2009
    Publication date: September 16, 2010
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Chi-Hsi Su, Wei Sheng Chang
  • Method and apparatus for detecting image movement
    Patent number: 7796120
    Abstract: A method of detecting image movement is provided. A reference frame is accessed, and a reference window is captured from the reference frame. A sampling frame is then accessed. When the reference window has not reached the margin of the reference frame, a new window is captured from the reference frame to replace the reference window. From the reference frame, a window matching the reference window is searched and a moving vector is calculated. When the sampling window reaches the margin of the sampling frame, the sampling frame replaces the reference frame. Another reference window is also captured from the reference frame, and the step of accessing the sampling frame is repeated.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: September 14, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventor: Tse-An Chou
  • APPARATUS AND METHOD FOR GENERATING RADIO FREQUENCY RIPPLE ZERO CROSSING SIGNAL
    Publication number: 20100226221
    Abstract: A method for generating an RFZC signal is disclosed. The method includes the following steps. First, an RF signal is received and the received RF signal is converted into an RF-ENVLP signal. Next, a DC offset of the RF signal is calibrated according to a variation of the RF-ENVLP signal so as to obtain a calibrated RF-ENVLP signal and obtain a gain according to the calibrated RF-ENVLP signal. Then, an RFZC signal is generated according to the calibrated RF-ENVLP signal and the gain.
    Type: Application
    Filed: July 10, 2009
    Publication date: September 9, 2010
    Applicant: SUNPLUS TECHNOLOGY CO., LTD.
    Inventors: Shih-Hsien Liu, Hsing-Sheng Huang, Sih-Kai Wang
  • Method and apparatus for low-memory high-performance discrete cosine transform coefficient prediction
    Patent number: 7787537
    Abstract: A method and an apparatus for discrete cosine transform coefficient prediction are disclosed. The method comprises the steps as follows: providing a discrete cosine transformed block; performing an AC prediction mode variable length coding and a non-AC prediction mode variable length coding simultaneously; providing a first memory block and a second memory block for storing the bit strings of two coding; and using another coding as long as one of first and second memory blocks reaches its capacity limit.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: August 31, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: Chien-Yu Lin, Tzu-Hsin Wang, Pai-Chu Hsieh
  • Method for rendering multi-dimensional image data
    Patent number: 7786992
    Abstract: A method for rendering multi-dimensional image data having a plurality of objects is disclosed. The method includes the following steps: providing an object database for storing the objects, providing a first pointer storage block, obtaining a depth value of the objects as a pointer which points to an address of the first pointer storage block, storing the pointers of the objects in the object database into the first pointer storage block and according to the depth value, sequentially searching the first pointer storage block to take out the objects from the object database for displaying the image data. The method is able to skip the comparison operations for every object with different depth values as found in the prior art. Therefore, the method can reduce the amount of computation and the occupied memory bandwidth.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: August 31, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: Bor-Sung Liang, Shin-Chien Wang
  • Adaptive equalizer apparatus with digital eye-opening monitor unit and method thereof
    Patent number: 7787536
    Abstract: An adaptive equalizer apparatus with digital eye-opening monitor unit and the method thereof are provided. The apparatus comprises an equalizer unit, a sampling unit, and an eye-opening monitor unit. The equalizer unit equalizes a first signal to a second signal. The sampling unit over-samples the second signal and determines the logic status of the second signal according to the sampling data. The eye-opening monitor unit processes the sampling data and outputs a detecting signal according to the processing result. The detecting signal represents the adequacy of the parameters of the equalizer unit, and the equalizer unit determines whether to change its parameters according to the detecting signal.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: August 31, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventor: Min-Chung Chou
  • Image processing device and method for reducing color artifact
    Publication number: 20100215265
    Abstract: An image processing device and method is provided to reduce color artifact. A smooth unit performs a smooth operation on color signal corresponding to a pixel and adjacent pixels to generate smooth color signal. A level shifter performs a level-shifting on the smooth color signal to obtain level-shifted color signal. A color strength unit calculates a color strength indicator based on the color signal. A gray level decision unit is connected to the color strength unit for deciding whether the pixel is in a gray level region or not based on the color strength indicators of the pixel and adjacent pixels to generate a gray level indicator. An adjustment unit adjusts the smooth color signal and the level-shifted color signal based on the gray level indicator to generate an output color signal.
    Type: Application
    Filed: February 3, 2010
    Publication date: August 26, 2010
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Huan-Pin Tseng, Tsung-Han Chiang
  • Low jitter and wide-range frequency synthesizer for low voltage operation
    Publication number: 20100214025
    Abstract: A low jitter and wide-range frequency synthesizer for low voltage operation includes a detector to generate a detection signal based on a logic level difference between an input signal and a feedback signal, a charge pump to generate a control signal based on the detection signal, a filter to generate a tuning signal based on the control signal, a bias circuit to generate a first bias signal and a second bias signal based on the tuning signal, a controllable oscillator to generate a differential output signal based on the first and the second bias signals, a differential to single ended converter to convert the differential output signal into an output signal, and a programmable frequency divider to generate the feedback signal based on the output signal.
    Type: Application
    Filed: February 18, 2010
    Publication date: August 26, 2010
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Chun-Liang Chen, Hui-Chun Hsu
  • Mode decision system and method for motion vector fine search
    Patent number: 7778329
    Abstract: A mode decision system and method for motion vector fine search. Each macroblock in a frame has a pre-determined clock number. The system includes a first subtractor, an operation level generator and a determinator. The first subtractor has a first input terminal to receive a clock number and a second input terminal to receive the pre-determined clock number in order to subtract the clock number from the pre-determined clock number and accordingly generate a clock difference. The operation level generator is connected to the first subtractor in order to generate an operation level based on the clock difference. The determinator selects one or more modes in accordance with the operation level and accordingly performs the fine search on the macroblock.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: August 17, 2010
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: Pai-Chu Hsieh, Chien-Yu Lin
  • Motion vector estimator for reducing film judder
    Publication number: 20100201888
    Abstract: A motion vector estimator for reducing film judder measures a motion vector of a block of an image. A motion vector selection device receives a plurality of motion vectors and generates N candidate vectors based on a motion estimation stage signal. N block matchmakers are connected to the motion vector selection device in order to generate N matching costs based on the N candidate vectors. A motion vector determinator is connected to the N block matchmakers and the motion vector selection device in order to determine an output motion vector of the block based on the N matching costs.
    Type: Application
    Filed: October 6, 2009
    Publication date: August 12, 2010
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Yuan-Chih Peng, Yen-Lin Chen
  • METHOD AND SYSTEM FOR DOWNLOADING NETWORK DATA INTO MULTIMEDIA PLAYER
    Publication number: 20100205241
    Abstract: A method and a system for downloading network data into a multimedia player are provided. In the present method, a data getting instruction sent by the multimedia player is received and accordingly a webpage source code is captured. Then, a web server corresponding to the webpage source code is identified, and the webpage source code is parsed according to a type information of the web server to obtain a plurality of data url links conforming to a data attribute. Finally, network data corresponding to each of the data url links is downloaded through a network and provided to the multimedia player.
    Type: Application
    Filed: April 24, 2009
    Publication date: August 12, 2010
    Applicant: SUNPLUS TECHNOLOGY CO., LTD.
    Inventors: Yung-Yu Lin, Shih-Ting Ou Yang, Yu-Chi Chen
  • OPTICAL STORAGE APPARATUS AND METHOD FOR AUTOMATICALLY ADJUSTING LOOP GAIN THEREOF
    Publication number: 20100188943
    Abstract: An optical storage apparatus and a method for automatically adjusting a loop gain thereof are provided. The method includes the following steps. Firstly, a compact disk is written by an erase power. Next, a writing state of the erase power is detected to generate an error signal. Finally, a loop gain of a servo control loop is corrected according to the error signal. Therefore, the loop gain can be corrected by the present invention according to a reflectance of the compact disk.
    Type: Application
    Filed: April 24, 2009
    Publication date: July 29, 2010
    Applicant: SUNPLUS TECHNOLOGY CO., LTD.
    Inventor: Yao-Wen Liu