Patents by Inventor Guo-Zua Wu

Guo-Zua Wu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20100158121
    Abstract: A coding mode selection method for selecting a coding mode for motion vector estimation is disclosed. The method includes the following steps. First, a first coding mode is selected to perform motion vector estimation for a macroblock having M sub-blocks. M motion vectors corresponding to the M sub-blocks are separately calculated. It is determined whether correlations for the M motion vectors match to a predetermined condition. If not, the first coding mode is selected and the M motion vectors are utilized to perform a motion vector estimation; and if so, a second coding mode is selected and the N motion vectors corresponding to the second coding mode are utilized to perform the motion vector estimation, wherein the N motion vectors are generated by using the M motion vectors and 1?N<M.
    Type: Application
    Filed: May 27, 2009
    Publication date: June 24, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yi-Jung Wang, Guo-Zua Wu, Oscal Tzyh-Chiang Chen
  • Publication number: 20100115187
    Abstract: A non-volatile data storage system including a first non-volatile storage medium, a second non-volatile storage medium, and a microprocessor is provided. The first non-volatile storage medium includes a popular data address recording area for recording logic addresses of popular data in the first non-volatile storage medium. The microprocessor is coupled to the first non-volatile storage medium and the second non-volatile storage medium. When the non-volatile data storage system boots up, the microprocessor copies the popular data from the first non-volatile storage medium to the second non-volatile storage medium according to the popular data address recording area. The popular data is accessed in the second non-volatile storage medium instead of the first non-volatile storage medium.
    Type: Application
    Filed: May 14, 2009
    Publication date: May 6, 2010
    Applicant: Industrial Technology Research Institute
    Inventors: Guo-Zua Wu, Shin-Hui Huang
  • Patent number: 7697611
    Abstract: A method for processing video image is provided to perform a motion vector filtering process on the image after being processed by a motion estimation process. The motion vector filtering process adjusts the motion vectors derived for each block in a video sequence, so that the motion vector of each block and the actual moving direction of the corresponding object in the image tend to conformity. Then, the blocks with similar motion vectors are merged and blocks with radical motion vectors are corrected, thereby reducing distortion of the output image and the number of bits used to represent the motion information, which in turns increases the efficiency of compression process.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: April 13, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Chia-Yang Tsai, S. Sam Tsai, Hsueh-Maing Hang, Ti-Hao Chiang, Guo-Zua Wu
  • Publication number: 20090304076
    Abstract: A memory arrangement method and system for AC/DC prediction in video compression applications based on parallel processing is disclosed. The method and system achieves optimum operating efficiency for data operation and reading based on parallel computing characteristics (Single Instruction Multiple Data (SIMD)) of an operation unit of the system. Additionally, the method transplants a VC-1 video compression system running in an operating system (the Windows operating system, for example) to a system platform using a digital signal processor (DSP) as an operation unit and implements a real-time VC-1 encoder according to parallel computing characteristics of a hardware core of the system platform.
    Type: Application
    Filed: December 31, 2008
    Publication date: December 10, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Po-Chun Chung, Guo-Zua Wu, Wei-Zheng Lu, Nai-Shen Wu, Chi-Yi Kao, Hsin-Han Shen
  • Patent number: 7620198
    Abstract: A watermark coding method and its recording medium utilize image interleaving and wavelet-based transformation to enhance the robustness of the image. The watermark series to be inserted is converted, encrypted, and modulated to increase the difficulty in decoding and restoring. Finally, the watermark is distributed and hidden in various frequency bands of the image in a frequency hopping way, generating a robust watermarked image. When used in a recording medium, side information produced during coding is recorded in the lead-in area of the recording medium to reduce the chances of illegal copying.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: November 17, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Chien-Ju Li, Guo-Zua Wu, Meng-Han Tsai, Kun-Ta Wu
  • Patent number: 7565023
    Abstract: A method for encoding images according to object shapes is provided. The method enables reduced usage of storage space when an image encoding system encodes a received image frame. The method uses a bottom-up and sequential approach for encoding coefficients. The coefficients in each subband are numbered using a tree structure, wherein level N subband is designated as a root of the whole tree, level (N-1) subbands are designated as roots of subtrees, and level (N=1) subbands are designated as terminal nodes of subtrees. The terminal nodes for one of the subtrees are numbered first, and then this subtree is numbered in the bottom-up sequence. After that, the terminal nodes for another subtree are numbered, and this numbering sequence continues to number all the other subtrees until the root of the tree has been numbered, so as to allow a bottom-up encoding process for the coefficient to be performed.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: July 21, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Yin-Tsung Hwang, Kuei-Hung Cheng, Shi-Shen Wang, Sung-Bo Chen, Guo-Zua Wu
  • Patent number: 7471873
    Abstract: A method for repairing video/audio files of multimedia video/audio disks is provided. The disclosed method may repair the fields with errors in the video/audio files after recording by utilizing the rewritable characteristic of rewritable optical disks. The errors caused by the video/audio instantaneous editing and recording platform may be reduced according to the disclosed method such that the repaired films may play fast forward/backward smoothly, perform Time Search function accurately, and display presentation time correctly, and are compatible to players of different specifications.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: December 30, 2008
    Assignee: Industrial Technology Research Institute
    Inventors: Kun-Ta Wu, Meng-Han Tsai, Guo-Zua Wu, Jian-Ru Li, Wei-Zheng Lu
  • Publication number: 20080140988
    Abstract: A method for reducing memory resource utilization is disclosed, applied to simplify address space of a table. Values stored in address fields of an original table are analyzed to determine whether logical relationship is detected between the values. If the logical relationship is detected, the values stored in the original table are classified to multiple base values and corresponding reduced values to generate a transformation table. Values with the same logical relationship for base values and the corresponding reduced values are stored in a new and equivalent address field of a reduction table.
    Type: Application
    Filed: September 7, 2007
    Publication date: June 12, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chien-Ju Li, Oscal Tzyh Chiang Chen, Guo-Zua Wu
  • Patent number: 7383585
    Abstract: A method controls the access times of an optical disc end discs of the same. The method includes the following steps. First, an optical disc drive obtains the addresses of a life flag and a medium key block (MKB) by reading a private flag of an optical disc. The life flag and the MKB are used to control the access times of the optical disc. After confirming the addresses of the life flag and the MKB, the optical disc drive obtains an optical power signal to determine the power that should be used to read the MKB. When the optical disc drive uses the appropriate reading power to access the MKB, the recognizable number of access times in the 4KB data is reduced, and the medium key signal is extracted to be confirmed if it is recognizable to restate the main data.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: June 3, 2008
    Assignee: Industrial Technology Research Institute
    Inventors: Guo-Zua Wu, Zu-Wen Chao, Yi-Jung Wang, Nai-Heng Tseng, Shu-Ching Chen
  • Patent number: 7376342
    Abstract: This specification disclosed a method of determining the disc type for a disc burner to determine the type of an unfinalized disc. By checking the special bit data in the first and second tracks, the discs can be classified into different types. This avoids the trouble of manually keeping track of the type of each disc.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: May 20, 2008
    Assignee: Industrial Technology Research Institute
    Inventors: Guo-Zua Wu, Chien-Hsin Huang, Jian-Ru Li, Zu-Wen Chao, Der-Ray Huang
  • Publication number: 20080104161
    Abstract: An integrated transformation apparatus is provided. The apparatus includes a first multiplexer, a second multiplexer, and a transformation unit. The first multiplexer retrieves point data from columns or rows of a multi-dimensional matrix and input data. The second multiplexer retrieves transformation coefficients corresponding to the point data. The transformation unit transforms data blocks of the multi-dimensional matrix to a plurality of sub data blocks according to the input data, the point data, and the transformation coefficients.
    Type: Application
    Filed: August 24, 2007
    Publication date: May 1, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yi-Jung Wang, Guo-Zua Wu, Chih-Chi Chang, Oscal Tzyh Chiang Chen
  • Publication number: 20070177814
    Abstract: A method is provided for processing data of a sub-picture of a picture. The method includes: providing an object of the sub-picture, forming a binary bit map of the object, and determining whether the number of bits having a first binary value is greater than the number of bits having a second binary value in the binary bit map. The method further includes: determining whether it is necessary to transform the binary bit map into a transformed binary bit map so that the number of bits having the first binary value is smaller than the number of bits having the second binary value in the transformed binary bit map, and determining a compression rule by determining the most significant two bits of a section of consecutive bits in the binary bit map or the transformed binary bit map.
    Type: Application
    Filed: October 11, 2006
    Publication date: August 2, 2007
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Guo-Zua Wu, Yi-Jung Wang, Meng-Han Tsai, Kun-Da Wu, Wei-Zheng Lu
  • Publication number: 20070143118
    Abstract: An apparatus and method for lossless audio compression/decompression through entropy coding are provided. The apparatus comprises a buffer, a time-axis predictor, and a bit-allocation entropy coder/decoder, wherein the time-axis predictor is capable of subtracting the predicted value of a current input signal value from its original value, thereby generating a predicted error signal. The predicted error signal is then input into the bit-allocation entropy decoder in accordance with a coding guideline, and in turn is coded into data blocks with different lengths. Further, the data blocks after entropy coding comprise a 32-bit header and the real data following the header, wherein the real data is substantially a discrepancy between the prediction error of the data and the minimum value of each data block.
    Type: Application
    Filed: May 23, 2006
    Publication date: June 21, 2007
    Inventors: Hsin-Hao Chen, Guo-Zua Wu, Jau-Jiu Ju, Der-Ray Huang
  • Publication number: 20070140655
    Abstract: The present invention provides a medium for storing a subtitle data structure of an audio/video program and a method for displaying the same. The subtitle data structure of the audio/video program includes a plurality of character packages and a background image package, wherein each character package further has a header that includes the start and the end of a presenting time stamp (PTS), X-Y coordinates of the character, X length, Y length and a color (or colors) of the character, as well as pixel data for displaying the character. Compared with prior art, using the subtitle data structure of the present invention can considerably save the required medium capacity for storing the subtitle data.
    Type: Application
    Filed: June 12, 2006
    Publication date: June 21, 2007
    Inventors: Meng-Han Tsai, Wei-Zheng Lu, Guo-Zua Wu, Kun-Da Wu, Jau-Jiu Ju, Der-Ray Huang
  • Publication number: 20070140660
    Abstract: A description data structure of a menu stored in an audio/video disc and a method for using the same are provided. The description data structure comprises a navigation data packet, a menu packet, and a program packet, wherein the menu packet further comprises a first header, a background image packet, a button 1 packet, a button 2 packet, etc. Moreover, each button packet comprises sub-picture information, and the navigation data packet comprises a button address packet for storing the address information of each button packet. By using the description data structure, the present invention allows not only the audio/video disc to be consumed less capacity for displaying images, but the use of a mask control program stored in the audio/video disc to be cancelled as well when highlighting a selected text in the menu, thereby expediting the processing of the stored data in the audio/video disc.
    Type: Application
    Filed: April 7, 2006
    Publication date: June 21, 2007
    Inventors: Wei-Zheng Lu, Meng-Han Tsai, Guo-Zua Wu, Kun-Da Wu, Der-Ray Huang, Jau-Jiu Ju
  • Patent number: 7197159
    Abstract: An amplitude shifted information embedding and detection method based upon the phase equalization is disclosed. It utilizes an equalization function to perform equalization computations on the DCT coefficients of an image. Through pixel shift, the original DCT coefficients have energy changes. Such changes are used to generate a visually compatible image with keys embedded at the same time. The information embedded image is very robust in the sense that the key information can still be accurately restored without comparing with the original image even if it is destroyed.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: March 27, 2007
    Assignee: Industrial Technology Research Institute
    Inventors: Guo-Zua Wu, Wen-Hsing Hsu
  • Patent number: 7197163
    Abstract: A watermark embedding method based on DCT subband image characters is disclosed. An original image is converted into a frequency image using a discrete cosine transformation. The watermark information is then embedded into a specific embedding block in each macro-block of the frequency image. The method has the following advantages: (1) the image embedded by watermark is resistant from distortion and damages from compressions; (2) the watermark image can be extracted without employing the original image; and (3) the quality of the image embedded with the watermark image can remain intact.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: March 27, 2007
    Assignee: Industrial Technology Research Institute
    Inventors: Guo-Zua Wu, Yi-Jung Wang, Zu-Wen Chao, Chwan-Chang Chen
  • Patent number: 7190654
    Abstract: A disc burner and its control method applicable to high speed disc burner, to solve disc burning failure problem due to burning speed exceeding encoding speed. A buffer is inserted to store the encoded data in groups, and these data groups are used in sequence for disc burning purpose. Therefore, the waiting time of the writing laser is spread out and does not exceed the threshold waiting time, and there is no disc burning failure problem.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: March 13, 2007
    Assignee: Industrial Technology Research Institute
    Inventors: Guo-Zua Wu, Chien-Hsin Huang, Zu-Wen Chao, Chwan-Chan Chen
  • Patent number: 7162646
    Abstract: A disk anti-copy system. An encrypted anti-copy mechanism with a device key table (Kd Table) prepared in a device and a fixed encryption processed media key block (MKB) pre-recorded in a disk is established. Only through the appropriate fixed encryption process between the key and the MKB can the device correctly read the disk. This controls the device and prevents disks from being copied. Moreover, the invention provides a method and device for preventing disks from being copied.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: January 9, 2007
    Assignee: Industrial Technology Research Institute
    Inventors: Guo-Zua Wu, I-Yen Lin, Wen-Hsing Hsu
  • Publication number: 20060143566
    Abstract: A recording medium and a method for previewing and selecting digital audio/video data unit on the recording medium are provided. The recording medium includes an audio/video pack of the original film, an audio/video pack of the preview film, a background page, and a page control descriptor. After having received a switch button information from a user, a medium reproducing system reads, de-multiplexes, and decodes the information correspond to a specified audio/video pack of the preview film. The medium reproducing system also composes the decoded video data of the background page and the decoded video data of different resolutions to output to a display.
    Type: Application
    Filed: December 28, 2004
    Publication date: June 29, 2006
    Inventors: Meng-Han Tsai, Guo-Zua Wu, Wei-Zheng Lu, Kun-Da Wu, Jian-Ru Li