Patents by Inventor Chi-Hao Tang
Chi-Hao Tang 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: 8564564Abstract: A method and device for position detection are disclosed. A self-capacitance detection can be performed by a sensing device. According to the result of the self-capacitance detection, a first mutual-capacitance detection can be performed for determining one or more first 1-D positions. According to the result of the first mutual-capacitance detection, a second mutual-capacitance detection can be performed for determining one or more second 1-D positions corresponding to each first 1-D position. One or more 2-D positions can be provided according to the one or more second 1-D positions corresponding to each first 1-D position. Besides, during the self-capacitance detection, the first mutual-capacitance detection, and the second mutual-capacitance detection, a touch related sensing information corresponding to a touch that covers a wide area can be neglected for palm rejection.Type: GrantFiled: September 22, 2011Date of Patent: October 22, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Patent number: 8537131Abstract: The current invention provides a method and a device performing the following steps: obtaining a dual-differential sensing information, detecting each touch related sensing information having two peaks in a pair of zero-crossings in the dual-differential sensing information and converting each touch related sensing information having two peaks in a pair of zero-crossings into original signal values. Each paired zero-crossings are a zero crossing between a negative value followed by a positive value paired with a zero crossing between a positive value followed by a negative value.Type: GrantFiled: November 30, 2011Date of Patent: September 17, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Patent number: 8497851Abstract: A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.Type: GrantFiled: February 22, 2013Date of Patent: July 30, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Patent number: 8473243Abstract: The method and device for analyzing position are disclosed. By analyzing sensing information with at least one zero-crossing, each position can be analyzed. The number of analyzed positions may be different from the number of zero-crossings. When the number of analyzed positions is different from the number of zero-crossing, the number of analyzed positions is more than one.Type: GrantFiled: September 23, 2011Date of Patent: June 25, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Patent number: 8471826Abstract: The method and device for position detection are disclosed. Corresponding to a first touch related sensing information, a second touch related sensing information is acquired for determining at least one position. Each position is used separately for determining the position of a centroid according to the first touch related sensing information or the second touch related sensing information.Type: GrantFiled: November 30, 2011Date of Patent: June 25, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Patent number: 8400423Abstract: A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.Type: GrantFiled: December 1, 2011Date of Patent: March 19, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Patent number: 8400425Abstract: A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.Type: GrantFiled: December 1, 2011Date of Patent: March 19, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Patent number: 8400422Abstract: A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.Type: GrantFiled: October 8, 2010Date of Patent: March 19, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Patent number: 8400424Abstract: A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.Type: GrantFiled: December 1, 2011Date of Patent: March 19, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Publication number: 20130038574Abstract: The invention discloses a full screen driven detection. A driving signal is simultaneously provided to all first conductive strips arranged in parallel in a first direction in a touch screen, and mutual capacitive signals are detected from all second conductive strips arranged in parallel in a second direction. The mutual capacitive signals can be used for determining whether an external conductive object coupled to the ground is touching or approaching the touch screen or not even if water or other conductive object not coupled to ground is on the touch screen. When the driving signal is simultaneously provided to all conductive strips arranged in the first direction, the driven signal is also simultaneously provided to a plurality of guarding conductive strips. The guarding conductive strips, the first conductive strips and the second conductive strips are exposed and separated from each other.Type: ApplicationFiled: October 12, 2012Publication date: February 14, 2013Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: CHIN-FU CHANG, CHI-HAO TANG
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Publication number: 20120327026Abstract: The present invention provides a capacitive sensor and a detection method using the same. The capacitive sensor of the present invention includes a plurality of detecting plates arranged sequentially. Each detecting plate is provided with the same driving signal. According to the difference between signals of each detecting plate and another detecting plate, detecting plates touched or approached by external objects can be identified.Type: ApplicationFiled: September 7, 2012Publication date: December 27, 2012Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: CHENG-HAN LEE, CHI-HAO TANG
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Publication number: 20120075248Abstract: A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.Type: ApplicationFiled: December 1, 2011Publication date: March 29, 2012Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: CHIN-FU CHANG, CHENG-HAN LEE, CHI-HAO TANG, SHUN-LUNG HO
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Publication number: 20120075245Abstract: The method and device for capacitive position detection are disclosed. The touch related sensors within a sensing device with a plurality of sensors are detected first. Therefore at least a range of the mutual capacitance detection for detecting sensing information can be determined according to the touch related sensors. The sensing information within the range of the mutual capacitance detection can be used for generating a two-dimension sensing information.Type: ApplicationFiled: November 30, 2011Publication date: March 29, 2012Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: CHIN-FU CHANG, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Publication number: 20120075246Abstract: A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.Type: ApplicationFiled: December 1, 2011Publication date: March 29, 2012Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: CHIN-FU CHANG, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Publication number: 20120075247Abstract: A method and device for analyzing positions are disclosed. In sensing information, at least one position is determined according to a first characteristic of a touch related sensing information. The sensing information also has a touch related sensing information with a second characteristic, which is opposite to the first characteristic. The touch related sensing information with the second characteristic is neglected or filtered. In addition, another method and device for analyzing positions are disclosed. An AC signal is provided through a pen, and a first characteristic of a touch related sensing information corresponding to a finger is opposite to the second characteristic of the touch related sensing information corresponding to the pen. The first characteristic and the second characteristic can be used to distinguish the touch of the finger from the touch of the pen or for palm rejection.Type: ApplicationFiled: December 1, 2011Publication date: March 29, 2012Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: CHIN-FU CHANG, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Publication number: 20120075227Abstract: The method and device for analyzing two-dimension sensing information are disclosed. The two-dimension (2D) sensing information is analyzed for determining touch related sensing information. The touch related sensing information may include touch related sensing information with inner low values within outer high values and with inner higher values within outer low values.Type: ApplicationFiled: December 7, 2011Publication date: March 29, 2012Inventors: CHIN-FU CHANG, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Publication number: 20120075228Abstract: The method and device for analyzing two-dimension sensing information are disclosed. The two-dimension (2D) sensing information is analyzed for determining touch related sensing information. The touch related sensing information may include touch related sensing information with inner low values within outer high values and with inner higher values within outer low values.Type: ApplicationFiled: December 7, 2011Publication date: March 29, 2012Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho
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Publication number: 20120075224Abstract: A method and device for dual-differential sensing is disclosed. The sensing information can be generated from signals provided by a sensing device with a plurality of sensors. Each value of the sensing information corresponds to signals of three sensors, respectively. The sensing device is flexible and configured on a display. The noise effect of the display on the signal of each sensor corresponds to the distance between the display and the sensor. Besides, the noise effect of the display on each value of the sensing information corresponds to the distances between the display and the three sensors, respectively.Type: ApplicationFiled: November 30, 2011Publication date: March 29, 2012Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: CHIN-FU CHANG, CHENG-HAN LEE, CHI-HAO TANG, SHUN-LUNG HO
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Publication number: 20120075250Abstract: The method and device for analyzing two-dimension sensing information are disclosed. The two-dimension (2D) sensing information is analyzed for determining touch related sensing information. The touch related sensing information may include touch related sensing information with inner low values within outer high values and with inner higher values within outer low values.Type: ApplicationFiled: December 7, 2011Publication date: March 29, 2012Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: CHIN-FU CHANG, CHENG-HAN LEE, CHI-HAO TANG, SHUN-LUNG HO
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Publication number: 20120068953Abstract: The method and device for position detection are disclosed. Corresponding to a first touch related sensing information, a second touch related sensing information is acquired for determining at least one position. Each position is used separately for determining the position of a centroid according to the first touch related sensing information or the second touch related sensing information.Type: ApplicationFiled: November 30, 2011Publication date: March 22, 2012Applicant: EGALAX_EMPIA TECHNOLOGY INC.Inventors: Chin-Fu Chang, Cheng-Han Lee, Chi-Hao Tang, Shun-Lung Ho