Patents by Inventor Chih-Cheng Ku
Chih-Cheng Ku 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: 20240118313Abstract: A probe head includes upper, middle and lower dies having upper, middle and lower guiding holes respectively, and a plurality of spring probes. The spring probe includes upper and lower abutting sections disposed in the upper and lower guiding holes, a spring section connecting the upper and lower abutting sections, and a barrel disposed on the periphery of the spring section and inserted in the middle guiding hole. The spring probes include adjacent first and second probes whose barrels has first and second outer diameters and are accommodated in first and second middle guiding holes having first and second widths. The difference between the first width and outer diameter and/or the difference between the second width and outer diameter is larger than or equal to 10 micrometers, and/or the difference between the first and second outer diameters is larger than or equal to 5 ?m.Type: ApplicationFiled: October 5, 2023Publication date: April 11, 2024Applicant: MPI CORPORATIONInventors: WEI-CHENG KU, WEN-YI WANG, CHIH-WEI WEN
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Patent number: 9042831Abstract: A method of wireless transmission applicable to transmission between a first communication terminal and a second transmission terminal is provided. The first communication terminal transmits data via a first channel selected as a primary transmission channel. The transmission quality of the primary transmission channel is detected. When it is determined that the quality of the primary transmission channel degrades, a third channel replaces the first channel as the primary transmission channel, and a replacement request is sent from the first communication terminal via a second channel. The first communication channel then transmits data via the third channel as the primary transmission channel.Type: GrantFiled: September 20, 2011Date of Patent: May 26, 2015Assignee: MStar Semiconductor, Inc.Inventors: John Zhongxuan Zhang, Chih-Cheng Ku
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Patent number: 8832480Abstract: A portable electronic device having automatic power supply mode switching is provided. The portable electronic device includes a micro-sensor and a control circuit. The control circuit controls operations of the electronic device, the micro-sensor senses whether the electronic device is carried or worn by a user. When the electronic device operates in a normal mode, and if the electronic device is not carried or worn for a time longer than a buffer period of a predetermined interval, the control circuit switches to a sleep mode, which results in lower power consumption.Type: GrantFiled: May 6, 2011Date of Patent: September 9, 2014Assignee: MStar Semiconductor, Inc.Inventors: Yen-Lin Lee, Shan-Cheng Sun, Chih-Cheng Ku, He-Ge Chen
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Patent number: 8803544Abstract: An integrated circuit chip is provided. The integrated circuit chip includes a pad, a first resistor, a second resistor, a first switch, a second switch and a controller. The first resistor and the first switch are serially connected between the pad and a first reference voltage terminal. The second resistor and the second switch are serially connected between the pad and a second reference voltage terminal. The controller selectively turns on and off the first and second switches according to an error determining mechanism. The error determining mechanism determines whether an error condition associated with the pad is present.Type: GrantFiled: October 24, 2011Date of Patent: August 12, 2014Assignee: MStar Semiconductor, Inc.Inventors: Chih-Cheng Ku, Shan-Cheng Sun, You-Kuo Wu
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Publication number: 20130235170Abstract: An electronic apparatus utilized in stereo glasses is provided. The electronic apparatus includes a first receiver, a second receiver, and a synchronization controller. The first receiver receives a first synchronization signal, and the second receiver receives a second synchronization signal. The transmission mechanism of the second synchronization signal is different from that of the first synchronization signal. The synchronization controller coupled to the first and the second receivers synchronizes left-eye/right-eye shutter glasses of the stereo glasses with a corresponding left-eye/right-eye frame of a stereo image according to at least one of the first and second synchronization signals.Type: ApplicationFiled: January 11, 2013Publication date: September 12, 2013Applicant: MSTAR SEMICONDUCTOR, INC.Inventors: Shih-Yuan Huang, Yen-Lin Lee, Chih-Cheng Ku, Shan-Cheng Sun
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Publication number: 20130005268Abstract: A method of wireless transmission applicable to transmission between a first communication terminal and a second transmission terminal is provided. The first communication terminal transmits data via a first channel selected as a primary transmission channel. The transmission quality of the primary transmission channel is detected. When it is determined that the quality of the primary transmission channel degrades, a third channel replaces the first channel as the primary transmission channel, and a replacement request is sent from the first communication terminal via a second channel. The first communication channel then transmits data via the third channel as the primary transmission channel.Type: ApplicationFiled: September 20, 2011Publication date: January 3, 2013Applicant: MSTAR SEMICONDUCTOR, INC.Inventors: John Zhongxuan Zhang, Chih-Cheng Ku
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Publication number: 20120280708Abstract: An integrated circuit chip is provided. The integrated circuit chip includes a pad, a first resistor, a second resistor, a first switch, a second switch and a controller. The first resistor and the first switch are serially connected between the pad and a first reference voltage terminal. The second resistor and the second switch are serially connected between the pad and a second reference voltage terminal. The controller selectively turns on and off the first and second switches according to an error determining mechanism. The error determining mechanism determines whether an error condition associated with the pad is present.Type: ApplicationFiled: October 24, 2011Publication date: November 8, 2012Applicant: MStar Semiconductor, Inc.Inventors: CHIH-CHENG KU, Shan-Cheng Sun, You-Kuo Wu
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Publication number: 20120023353Abstract: A portable electronic device having automatic power supply mode switching is provided. The portable electronic device includes a micro-sensor and a control circuit. The control circuit controls operations of the electronic device, the micro-sensor senses whether the electronic device is carried or worn by a user. When the electronic device operates in a normal mode, and if the electronic device is not carried or worn for a time longer than a buffer period of a predetermined interval, the control circuit switches to a sleep mode, which results in lower power consumption.Type: ApplicationFiled: May 6, 2011Publication date: January 26, 2012Applicant: MSTAR SEMICONDUCTOR, INC.Inventors: Yen-Lin Lee, Shan-Cheng Sun, Chih-Cheng Ku, He-Ge Chen
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Patent number: 7920150Abstract: An image scaling system includes a window memory, a longitudinal scaler, a buffer and a latitudinal scaler. The window memory temporarily stores partial data of N image lines. The longitudinal scaler performs a longitudinal scaling operation on the partial data of the N image lines to thereby produce partial data of a longitudinal image line. The latitudinal scaler performs a latitudinal scaling operation on the partial data of the longitudinal image line to thereby produce scaling-part data of a latitudinal image line. The longitudinal scaler and the latitudinal scaler use a window average to perform an image shrinking operation and a bi-linear interpolation average to perform an image expanding operation.Type: GrantFiled: June 18, 2007Date of Patent: April 5, 2011Assignee: Sunplus Technology Co., Ltd.Inventors: Chih-Cheng Ku, Chun-Chi Chen, Wen-Cheng Ho
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Publication number: 20080049045Abstract: An image scaling system includes a window memory, a longitudinal scaler, a buffer and a latitudinal scaler. The window memory temporarily stores partial data of N image lines. The longitudinal scaler performs a longitudinal scaling operation on the partial data of the N image lines to thereby produce partial data of a longitudinal image line. The latitudinal scaler performs a latitudinal scaling operation on the partial data of the longitudinal image line to thereby produce scaling-part data of a latitudinal image line. The longitudinal scaler and the latitudinal scaler use a window average to perform an image shrinking operation and a bi-linear interpolation average to perform an image expanding operation.Type: ApplicationFiled: June 18, 2007Publication date: February 28, 2008Applicant: Sunplus Technology Co., Ltd.Inventors: Chih-Cheng Ku, Chun-Chi Chen, Wen-Cheng Ho