Patents by Inventor Ping-Tsai Tsai
Ping-Tsai Tsai 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).
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Patent number: 9030922Abstract: The invention relates to recording on a medium, and in particular, to laser control during recording data on an optical medium. A laser control method for dynamically adjusting laser power during recording data onto an optical disc comprises: recording normal data onto the optical disc according to an initial laser power; stopping recording when a trigger is generated; reading back the recorded normal data and generating a first recording quality index; recording a test pattern at a test pattern starting point according to a selected laser power; reading back the test pattern and generating a second recording quality index; and determining an adaptive laser power to continually record the normal data according to the first recording quality index and the second recording quality index.Type: GrantFiled: June 9, 2009Date of Patent: May 12, 2015Assignee: Mediatek Inc.Inventors: Chih-Ching Yu, Hung-Hsiang Chang, Ping-Tsai Tsai
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Patent number: 8266374Abstract: A method of identifying physical characteristic information of an optical disc includes: deriving a reading result by reading at least a first region of the optical disc, where a location of the first region is specified in a Blu-ray disc specification for recording information associated with recording management of a BD recordable disc; and identifying a first physical characteristic of the optical disc according to the reading result.Type: GrantFiled: September 18, 2009Date of Patent: September 11, 2012Assignee: Mediatek Inc.Inventors: Ping-Tsai Tsai, Ya-Fang Nien, Kun-Yi Chan
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Patent number: 8218412Abstract: A method for determining a disc format is disclosed. Data from at least one address of the disc is retrieved, wherein the at least one address is selected from a plurality of predetermined addresses related to the disc format. The disc format is determined according to the retrieved data.Type: GrantFiled: November 5, 2007Date of Patent: July 10, 2012Assignee: Mediatek Inc.Inventors: Ping-Tsai Tsai, Sung-Yang Wu, Pin-Chou Liu, Ya-Fang Nien
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Publication number: 20110069593Abstract: A method of identifying physical characteristic information of an optical disc includes: deriving a reading result by reading at least a first region of the optical disc, where a location of the first region is specified in a Blu-ray disc specification for recording information associated with recording management of a BD recordable disc; and identifying a first physical characteristic of the optical disc according to the reading result.Type: ApplicationFiled: September 18, 2009Publication date: March 24, 2011Inventors: Ping-Tsai Tsai, Ya-Fang Nien, Kun-Yi Chan
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Publication number: 20100232274Abstract: A method for detecting a disc, the method includes the steps of: reading a file system of the disc; determining a type of the disc according to the file system; and abandoning a multi-session checking process upon the disc if the type of the disc is a one-session disc.Type: ApplicationFiled: March 12, 2009Publication date: September 16, 2010Inventors: Ping-Tsai Tsai, Chih-Tien Chen, Ya-Fang Nien, Sung-Yang Wu
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Patent number: 7738339Abstract: A data recording device. A random data generator randomly generates substitute data. A recording data generator receives original data and a recording address from a host, receives the substitute data, compares the recording address with a reference address, and outputs the substitute data according to the comparison result. An encoder generates a first data block according to the substitute data. A modulator modulates the first data block. An optical pickup records the modulated first data block on the optical recording medium according to the recording address.Type: GrantFiled: November 28, 2006Date of Patent: June 15, 2010Assignee: Mediatek Inc.Inventors: Chih-Ching Yu, Ying-Feng Huang, Ming-Tsang Wu, Ping-Tsai Tsai
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Publication number: 20100074071Abstract: The invention provides a method for reading disk management data of an optical disk. In one embodiment, the disk management data comprises data layout information of the optical disk, and a plurality of disk management data copies of the disk management data is stored on the optical disk. First, a first disk management data copy selected from the plurality of disk management data copies is read from the optical disk. An accuracy measure of the first disk management data copy is then calculated to determine whether the accuracy measure of the first disk management data copy is acceptable. When the accuracy measure of the first disk management data copy is acceptable, the optical disk is accessed according to the first disk management data copy.Type: ApplicationFiled: September 22, 2008Publication date: March 25, 2010Applicant: MEDIATEK INC.Inventors: Ping-Tsai TSAI, Chih-Tien CHEN, Ya-Fang NIEN, Sung-Yang WU
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Publication number: 20100020654Abstract: An optical disc player for playback of a multimedia file stored in an optical disc is disclosed. The optical disc player includes a front-end loader and a back-end playback engine. The front-end loader, including a first data buffer, reads data from the optical disc and stores the read data in the first data buffer when the amount of data stored in the first data buffer is less than a first threshold. The back-end playback engine receives the data from the first data buffer and plays a multimedia segment corresponding to the received data. The front-end loader increases the first threshold of the first data buffer before a time-consuming servo behavior occurs.Type: ApplicationFiled: July 28, 2008Publication date: January 28, 2010Applicant: MEDIATEK INC.Inventors: Ping-Tsai Tsai, Shih-Rong Kao, Bang-Cheng Chen, Pin-Chou Liu, Sung-Yang Wu
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Publication number: 20090245051Abstract: The invention relates to recording on a medium, and in particular, to laser control during recording data on an optical medium. A laser control method for dynamically adjusting laser power during recording data onto an optical disc comprises: recording normal data onto the optical disc according to an initial laser power; stopping recording when a trigger is generated; reading back the recorded normal data and generating a first recording quality index; recording a test pattern at a test pattern starting point according to a selected laser power; reading back the test pattern and generating a second recording quality index; and determining an adaptive laser power to continually record the normal data according to the first recording quality index and the second recording quality index.Type: ApplicationFiled: June 9, 2009Publication date: October 1, 2009Applicant: MEDIATEK INC.Inventors: Chih-Ching Yu, Hung-Hsiang Chang, Ping-Tsai Tsai
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Patent number: 7561508Abstract: The invention relates to recording on a medium, and in particular, to laser control during recording data on an optical medium. A laser control method for dynamically adjusting laser power during recording data onto an optical disc comprises: recording normal data onto the optical disc according to an initial laser power; stopping recording when a trigger is generated; reading back the recorded normal data and generating a first recording quality index; recording a test pattern at a test pattern starting point according to a selected laser power; reading back the test pattern and generating a second recording quality index; and determining an adaptive laser power to continually record the normal data according to the first recording quality index and the second recording quality index.Type: GrantFiled: February 1, 2006Date of Patent: July 14, 2009Assignee: Mediatek Inc.Inventors: Chih-Ching Yu, Hung-Hsiang Chang, Ping-Tsai Tsai
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Publication number: 20090175142Abstract: A method of recording data on a storage medium is provided. A first recording indicator is written on the storage medium to indicate a first state of a data recording thereon. A second recording indicator is written on the storage medium to indicate a second state of the data recording thereon. A recording status of the data recording is determined accordingly in accordance with the first and second indicators.Type: ApplicationFiled: January 7, 2008Publication date: July 9, 2009Applicant: MEDIATEK INC.Inventors: Ping-Tsai Tsai, Pin-Chou Liu, Sung-Yang Wu, Chih-Ching Yu, Ya-Fang Nien, Hsin-Chuan Lai
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Patent number: 7539791Abstract: A method for storing data in a first buffer and a second buffer is disclosed. The method includes: sequentially storing an incoming data into the first buffer and the second buffer according to a first threshold; transferring data stored in the second buffer to the first buffer when an amount of data stored in the second buffer reaches a second threshold; and driving the first buffer to output data stored therein when an amount of data stored in the first buffer exceeds the first threshold after transferred data is received from the second buffer.Type: GrantFiled: May 16, 2006Date of Patent: May 26, 2009Assignee: MediaTek Inc.Inventors: Sung-Yang Wu, Ping-Tsai Tsai, Pin-Chou Liu
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Publication number: 20090116368Abstract: A method for determining a disc format is disclosed. Data from at least one address of the disc is retrieved, wherein the at least one address is selected from a plurality of predetermined addresses related to the disc format. The disc format is determined according to the retrieved data.Type: ApplicationFiled: November 5, 2007Publication date: May 7, 2009Applicant: MEDIATEK INC.Inventors: Ping-Tsai Tsai, Sung-Yang Wu, Pin-Chou Liu, Ya-Fang Nien
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Publication number: 20080123501Abstract: A data recording device. A random data generator randomly generates substitute data. A recording data generator receives original data and a recording address from a host, receives the substitute data, compares the recording address with a reference address, and outputs the substitute data according to the comparison result. An encoder generates a first data block according to the substitute data. A modulator modulates the first data block. An optical pickup records the modulated first data block on the optical recording medium according to the recording address.Type: ApplicationFiled: November 28, 2006Publication date: May 29, 2008Applicant: MEDIATEK INC.Inventors: Chih-Ching Yu, Ying-Feng Huang, Ming-Tsang Wu, Ping-Tsai Tsai
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Publication number: 20080084803Abstract: Disc data accessing in current disc drives is time consuming to the user and generally inefficient. The optical disc evaluation method and access apparatus for evaluating compatibility between a disc and a disc drive described herein was created and designed to increase efficiency during disc accessing. The optical disc access apparatus comprises of a receiver and an optical disc scoring unit. The receiver is configured for retrieving a reflected signal from a disc while the optical disc scoring unit is configured for generating information in response to the reflected signal. The resulting information indicates the compatibility between the disc and disc drive.Type: ApplicationFiled: October 4, 2006Publication date: April 10, 2008Applicant: MEDIATEK INC.Inventors: Shih-Hao Chen, Pin-Chou Liu, Sung-Yang Wu, Ping-Tsai Tsai
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Publication number: 20070189715Abstract: Recording methods and systems for a rewritable optical disk which is not formatted. Multimedia data is first written to a data area of a rewritable optical disk after receipt of a record command. Management data corresponding to the multimedia data is then written or modified to a management data area of the rewritable optical disk after receipt of a stop command from the disk drive. Thereafter, the multimedia data is appended and the management data is modified. The appendage and modification is repeated until all multimedia data is written. Finally, lead-in and lead-out areas of the rewritable optical disk are written.Type: ApplicationFiled: February 1, 2006Publication date: August 16, 2007Inventors: Ping-Tsai Tsai, Sung-Yang Wu
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Publication number: 20070070762Abstract: A method for storing data in a first buffer and a second buffer is disclosed. The method includes: sequentially storing an incoming data into the first buffer and the second buffer according to a first threshold; transferring data stored in the second buffer to the first buffer when an amount of data stored in the second buffer reaches a second threshold; and driving the first buffer to output data stored therein when an amount of data stored in the first buffer exceeds the first threshold after transferred data is received from the second buffer.Type: ApplicationFiled: May 16, 2006Publication date: March 29, 2007Inventors: Sung-Yang Wu, Ping-Tsai Tsai, Pin-Chou Liu
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Publication number: 20070047408Abstract: The invention relates to recording on a medium, and in particular, to laser control during recording data on an optical medium. A laser control method for dynamically adjusting laser power during recording data onto an optical disc comprises: recording normal data onto the optical disc according to an initial laser power; stopping recording when a trigger is generated; reading back the recorded normal data and generating a first recording quality index; recording a test pattern at a test pattern starting point according to a selected laser power; reading back the test pattern and generating a second recording quality index; and determining an adaptive laser power to continually record the normal data according to the first recording quality index and the second recording quality index.Type: ApplicationFiled: February 1, 2006Publication date: March 1, 2007Inventors: Chih-Ching Yu, Hung-Hsiang Chang, Ping-Tsai Tsai