Patents by Inventor Tzu-Ming Chou
Tzu-Ming Chou 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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Publication number: 20240147711Abstract: The present disclosure provides a memory device, a semiconductor device, and a method of operating a memory device. A memory device includes a memory cell, a bit line, a word line, a select transistor, a fuse element, and a heater. The bit line is connected to the memory cell. The word line is connected to the memory cell. The select transistor is disposed in the memory cell. A gate of the select transistor is connected to the word line. The fuse element is disposed in the memory cell. The fuse element is connected to the bit line and the select transistor. The heater is configured to heat the fuse element.Type: ApplicationFiled: January 4, 2024Publication date: May 2, 2024Inventors: PERNG-FEI YUH, YIH WANG, MENG-SHENG CHANG, JUI-CHE TSAI, KU-FENG LIN, YU-WEI LIN, KEH-JENG CHANG, CHANSYUN DAVID YANG, SHAO-TING WU, SHAO-YU CHOU, PHILEX MING-YAN FAN, YOSHITAKA YAMAUCHI, TZU-HSIEN YANG
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Patent number: 7706225Abstract: A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal and the frequency of buffer under-run occurrence is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed.Type: GrantFiled: December 3, 2008Date of Patent: April 27, 2010Assignee: Mediatek Inc.Inventors: Tzu-Ming Chou, Kun-Hung Hsieh
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Patent number: 7680008Abstract: A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal, the frequency of buffer under-run occurrence, the temperature of the drive, the wobble jitter and the level of write power is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed. If at least one of the temperature of the drive, the wobble jitter and the estimated write power exceeds the reset value before recording starts, the rotation speed of the optical disk drive is decreased before recording.Type: GrantFiled: August 17, 2007Date of Patent: March 16, 2010Assignee: Mediatek Inc.Inventors: Tzu-Ming Chou, Kun-Hung Hsieh, Wei-Yu Lin, Yao-Lung Chuang, Chun-Jen Chen, Kuo-Jung Lan
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Patent number: 7522493Abstract: A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal and the frequency of buffer under-run occurrence is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed.Type: GrantFiled: October 14, 2004Date of Patent: April 21, 2009Assignee: Mediatek Inc.Inventors: Tzu-Ming Chou, Kun-Hung Hsieh
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Publication number: 20090080322Abstract: A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal and the frequency of buffer under-run occurrence is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed.Type: ApplicationFiled: December 3, 2008Publication date: March 26, 2009Applicant: Mediatek Inc.Inventors: Tzu-Ming Chou, Kun-Hung Hsieh
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Publication number: 20080247284Abstract: A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal, the frequency of buffer under-run occurrence, the temperature of the drive, the wobble jitter and the level of write power is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed. If at least one of the temperature of the drive, the wobble jitter and the estimated write power exceeds the reset value before recording starts, the rotation speed of the optical disk drive is decreased before recording.Type: ApplicationFiled: April 14, 2008Publication date: October 9, 2008Applicant: Mediatek Inc.Inventors: Tzu-Ming Chou, Kun-Hung Hsieh, Wei-Yu Lin, Yao-Lung Chuang, Chun-Jen Chen, Kuo-Jung Lan
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Patent number: 7382707Abstract: A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal, the frequency of buffer under-run occurrence, the temperature of the drive, the wobble jitter and the level of write power is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed. If at least one of the temperature of the drive, the wobble jitter and the estimated write power exceeds the reset value before recording starts, the rotation speed of the optical disk drive is decreased before recording.Type: GrantFiled: June 9, 2005Date of Patent: June 3, 2008Assignee: Mediatek Inc.Inventors: Tzu-Ming Chou, Kun-Hung Hsieh, Wei-Yu Lin, Yao-Lung Chuang, Chun-Jen Chen, Kuo-Jung Lan
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Patent number: 7342859Abstract: In an optical recording system, according to a wobble sync signal obtained from a wobble signal associated with a physical track of a recording medium being recorded with input data by a recording module operated in a default constant angular velocity (CAV) recording mode, operation of the recording module can be switched from the CAV recording mode to a constant linear velocity (CLV) recording mode by a mode control switch. The mode control switch is forced to switch operation of the recording module to the CLV recording mode when result of a comparison between a write clock signal generated from the wobble sync signal when the recording module is operated by the mode control switch in the CAV recording mode, and a threshold signal corresponding to a threshold recording speed in the CAV recording mode indicates that the recording mode should be switched to the CLV recording mode but the mode control switch still keep the recording module staying in the CAV recording mode.Type: GrantFiled: November 15, 2004Date of Patent: March 11, 2008Assignee: Mediatek, Inc.Inventors: Tzu-Ming Chou, Yao-Lung Chuang
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Publication number: 20080031101Abstract: A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal, the frequency of buffer under-run occurrence, the temperature of the drive, the wobble jitter and the level of write power is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed. If at least one of the temperature of the drive, the wobble jitter and the estimated write power exceeds the reset value before recording starts, the rotation speed of the optical disk drive is decreased before recording.Type: ApplicationFiled: August 17, 2007Publication date: February 7, 2008Applicant: Mediatek Inc.Inventors: Tzu-Ming Chou, Kun-Hung Hsieh, Wei-Yu Lin, Yao-Lung Chuang, Chun-Jen Chen, Kuo-Jung Lan
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Publication number: 20060153048Abstract: Methods and apparatuses for generating a protection window signal for use in header detection of an optical storage medium are disclosed. One of the methods involves: extracting a maximum level of an RF-sum signal derived from the optical storage medium to generate a first level value; extracting at least one of DC level and bottom level of the RF-sum signal to generate a corresponding second level value; calculating a reference level according to the first and second level values; and comparing the RF-sum signal with the reference level to determine a protection window signal. When the accessing of the optical storage medium is switched from a first area with a first reflectivity to a second area with a second reflectivity, the response speed of extracting the DC level/bottom level of the RF-sum signal, the weighting of the second level value, or the DC level of the RF-sum signal is adjusted.Type: ApplicationFiled: March 3, 2006Publication date: July 13, 2006Inventors: Kuo-Jung Lan, Tzu-Ming Chou, Chi-Pei Huang, Chih-Chung Wu, Kuang-Jung Chang
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Publication number: 20050219970Abstract: A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal, the frequency of buffer under-run occurrence, the temperature of the drive, the wobble jitter and the level of write power is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed. If at least one of the temperature of the drive, the wobble jitter and the estimated write power exceeds the reset value before recording starts, the rotation speed of the optical disk drive is decreased before recording.Type: ApplicationFiled: June 9, 2005Publication date: October 6, 2005Applicant: MEDIATEK INC.Inventors: Tzu-Ming Chou, Kun-Hung Hsieh, Wei-Yu Lin, Yao-Lung Chuang, Chun-Jen Chen, Kuo-Jung Lan
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Publication number: 20050141371Abstract: In an optical recording system, according to a wobble sync signal obtained from a wobble signal associated with a physical track of a recording medium being recorded with input data by a recording module operated in a default constant angular velocity (CAV) recording mode, operation of the recording module can be switched from the CAV recording mode to a constant linear velocity (CLV) recording mode by a mode control switch. The mode control switch is forced to switch operation of the recording module to the CLV recording mode when result of a comparison between a write clock signal generated from the wobble sync signal when the recording module is operated by the mode control switch in the CAV recording mode, and a threshold signal corresponding to a threshold recording speed in the CAV recording mode indicates that the recording mode should be switched to the CLV recording mode but the mode control switch still keep the recording module staying in the CAV recording mode.Type: ApplicationFiled: November 15, 2004Publication date: June 30, 2005Inventors: Tzu-Ming Chou, Yao-Lung Chuang
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Publication number: 20050122871Abstract: A recording method for an optical disk drive is implemented as follows. First, at least one of the level of the focusing error signal, the level of the tracking error signal, a wobble synchronization pattern loss, the error rate of demodulating a wobble signal and the frequency of buffer under-run occurrence is detected. If at least one detected value exceeds the preset value, the recording will be ceased. Then, the rotation speed of the optical disk drive is decreased, and the recording is resumed with the decreased rotation speed.Type: ApplicationFiled: October 14, 2004Publication date: June 9, 2005Applicant: MEDIATEK INC.Inventors: Tzu-Ming Chou, Kun-Hung Hsieh