Patents Assigned to Egalax—Empia Technology Inc.
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Patent number: 8531429Abstract: The disclosed capacitive sensing device has first conductive lines, second conductive lines and electrical conductors. The first conductive lines are electrically isolated from each other, the second conductive lines are electrically isolated from each other and electrically isolated from and stacked with the first conductive lines to form numerous intersecting points, and the electrical conductors are electrically isolated from each other and correspondingly crossing the first and the second conductive lines and being around the intersecting points. Herein, the electrical conductors are electrically isolated from the first and second conductive lines.Type: GrantFiled: July 9, 2009Date of Patent: September 10, 2013Assignee: Egalax—Empia Technology Inc.Inventor: Chin-Fu Chang
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Patent number: 8531426Abstract: The present invention provides a mutual capacitive multi-touch screen. The conductive strip pattern allows that, when a touch range of each external conductive object on the mutual capacitive multi-touch screen is larger than a predetermined condition, capacitive coupling between each external conductive object and first conductive strip is greater than capacitive coupling between each external conductive object and second conductive strip, such that the proportion of a driving signal flowing out of the first conductive strip via at least one first external conductive object in the external conductive objects and into the second conductive strip via at least one second external conductive object in the external conductive objects decreases as the number of second external conductive objects increases.Type: GrantFiled: August 8, 2012Date of Patent: September 10, 2013Assignee: Egalax—Empia Technology Inc.Inventor: Chin-Fu Chang
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Patent number: 8502770Abstract: A display device is provided. The display device includes a command processing unit, a command converting unit, a universal serial bus (USB) interface and a display module. The command processing unit processes a remote-control command from a remote-controller. The command converting unit generates a human interface device (HID) command corresponding to the remote-control command. The USB interface outputs the HID command to an external host which generates an image in response to the HID command. Then the display module displays the image.Type: GrantFiled: July 23, 2009Date of Patent: August 6, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chao-Hung Chen, Yu-Fen Tsai, Yu-Wen Huang
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Patent number: 8502794Abstract: The present invention provides a mutual capacitive multi-touch screen. The conductive strip pattern allows that, when a touch range of each external conductive object on the mutual capacitive multi-touch screen is larger than a predetermined condition, capacitive coupling between each external conductive object and first conductive strip is greater than capacitive coupling between each external conductive object and second conductive strip, such that the proportion of a driving signal flowing out of the first conductive strip via at least one first external conductive object in the external conductive objects and into the second conductive strip via at least one second external conductive object in the external conductive objects decreases as the number of second external conductive objects increases.Type: GrantFiled: August 17, 2011Date of Patent: August 6, 2013Assignee: Egalax—Empia Technology Inc.Inventor: Chin-Fu Chang
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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: 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: 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: 8446380Abstract: A resistive multi-point touch device and method is disclosed. A plurality of wires intersect each other to form a plurality of intersecting regions. The intersecting wires are separated from each other by a plurality of insulating particles. First, suppressed intersecting regions are sensed, and then contact points on the suppressed intersecting regions are sensed based on the suppressed intersecting regions. Sensing of the suppressed intersecting regions is performed by first sensing suppressed wires, and then determining possibly suppressed intersecting regions based on the suppressed wires, and sensing suppressed intersecting regions based on these possibly suppressed intersecting regions.Type: GrantFiled: December 17, 2009Date of Patent: May 21, 2013Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Shang-Tai Yeh
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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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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: 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: 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: 8300028Abstract: A device and method for detecting connections of a 4- or 5-terminal resistive touch panel are disclosed. The device includes five terminals and a detecting unit. When the five terminals are connected to the touch panel, the detecting unit provides a high potential and a low potential to first and last of the five terminals, respectively, thereby determining whether the touch panel is a 4- or 5-terminal resistive touch panel by determining if there is a closed circuit between the two terminals.Type: GrantFiled: December 17, 2009Date of Patent: October 30, 2012Assignee: Egalax—Empia Technology IncInventors: Shang-Tai Yeh, Chia-Ling Sun
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Patent number: 8294690Abstract: A device and method for detecting connections of a 4- or 5-terminal resistive touch panel are disclosed. The device includes five terminals and a detecting unit. When the five terminals are connected to the touch panel, the detecting unit provides a high potential and a low potential to first and last of the five terminals, respectively, thereby determining whether the touch panel is a 4- or 5-terminal resistive touch panel by determining if there is a closed circuit between the two terminals.Type: GrantFiled: December 17, 2009Date of Patent: October 23, 2012Assignee: Egalax—Empia Technology Inc.Inventors: Shang-Tai Yeh, Chia-Ling Sun
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Patent number: 8294684Abstract: A device and method for detecting connections of a 4- or 5-terminal resistive touch panel are disclosed. The device includes five terminals and a detecting unit. When the five terminals are connected to the touch panel, the detecting unit provides a high potential and a low potential to first and last of the five terminals, respectively, thereby determining whether the touch panel is a 4- or 5-terminal resistive touch panel by determining if there is a closed circuit between the two terminals.Type: GrantFiled: December 17, 2009Date of Patent: October 23, 2012Assignee: Egalax—Empia Technology Inc.Inventors: Shang-Tai Yeh, Chia-Ling Sun
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Patent number: 8294689Abstract: A device and method for detecting connections of a 4- or 5-terminal resistive touch panel are disclosed. The device includes five terminals and a detecting unit. When the five terminals are connected to the touch panel, the detecting unit provides a high potential and a low potential to first and last of the five terminals, respectively, thereby determining whether the touch panel is a 4- or 5-terminal resistive touch panel by determining if there is a closed circuit between the two terminals.Type: GrantFiled: December 17, 2009Date of Patent: October 23, 2012Assignee: Egalax—Empia Technology Inc.Inventors: Shang-Tai Yeh, Chia-Ling Sun
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Patent number: 7839393Abstract: A control device for a capacitive touch panel has multiple voltage driving/current detecting circuits respectively connected to four corners of a top conductive layer of the touch panel. An auxiliary voltage driving/current detecting circuit is connected to a bottom conductive layer of the touch panel. When the touch panel is pressed, all voltage driving/current detecting circuits detect first current values at four corners of the top conductive layer. The auxiliary voltage driving/current detecting circuit also detects a second current value from the bottom conductive layer. The second current value is used to compensate all first current values so that the coordinate information of the position being pressed can be exactly calculated.Type: GrantFiled: September 12, 2006Date of Patent: November 23, 2010Assignee: Egalax—Empia Technology Inc.Inventor: Chin-Fu Chang
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Patent number: 7808490Abstract: Described is a device and a method for determining a touch position on a sensing area of a capacitive touch panel. In the device and method, an alternating current (AC) scan signal having a frequency and a current value is supplied to each of four corners of the capacitive touch panel. Next, the frequencies of the AC scan signals are each rapidly switched among a group of specific frequencies. The current values of the AC scan signals detected. In response, a group of selected frequencies is selected according to a noise filtering procedure from the group of specific frequencies based on the current values. Final current values are obtained by calculating the current values of the AC scan signals of the group of selected frequencies. Finally, the touch position on the capacitive touch panel is determined based on the final current values.Type: GrantFiled: August 29, 2007Date of Patent: October 5, 2010Assignee: Egalax—Empia Technology Inc.Inventors: Chin-Fu Chang, Cheng-Han Lee