Patents by Inventor Ching-Chuan Chao
Ching-Chuan Chao 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: 7358964Abstract: A multi-induction loop layout of an electromagnetic inductive system is disclosed. The multi-induction loop layout of the invention comprises a plurality of inductive loops, one terminal of each inductive loop connecting to a loop switch, and the other terminal connecting to the common node. Every logical inductive loop is a relative close inductive loop, the relative close inductive loop possessing a plurality of -type sections, forming a sawtooth-shaped region and corresponding to and closing each other to form a plurality of close-like regions. The form of which gradually approaches the multi-induction loop layout.Type: GrantFiled: September 25, 2002Date of Patent: April 15, 2008Assignee: Waltop International Corp.Inventors: Ching-Chuan Chao, Chung-Wen Hsu
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Patent number: 7176907Abstract: The invention, an improved device and method for the pointer system of a digitizer tablet, is to repetitiously emit signals sequentially from a specific set of inductive loop when the position pointed by the wireless pointer device is located within a range formed by this specific set of inductive loop induced most intensively during a locally scanning process. After a transient energy storage of the wireless pointer device, corresponding resonant signals are emitted out and are received sequentially by several sets of inductive loop located on the digitizer tablet in the neighborhood of this specific set of inductive loop and, by these signals, the wireless pointer device's coordinate position on the digitizer tablet is calculated out relatively.Type: GrantFiled: October 23, 2002Date of Patent: February 13, 2007Assignee: Waltop International Corp.Inventors: Ching-Chuan Chao, Chung-Wen Hsu
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Patent number: 6999067Abstract: An electromagnetic induction device with a writing function is disclosed in this present invention. The design of this invention combines an electromagnetic induction device and a writing device in a pen-like device. The electromagnetic induction device can be employed as a pointer device of a tablet. The writing device can be used as an ink pen. Moreover, while writing on paper, the tablet can detect and calculate the coordinates of the writing device and save the coordinates in memory device, such as a RAM. After communicating with the host machine, the monitor can response and display the handwriting trace. Hence, it is very convenient for a user to bring and carry a pen-like device with multiple functions according to this invention.Type: GrantFiled: December 30, 2002Date of Patent: February 14, 2006Assignee: Aiptek International Inc.Inventors: Ching-Chuan Chao, Ping-Hung Chen, Chung-Wen Hsu
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Patent number: 6930670Abstract: A computer peripheral input system with two input types and a method of data communication for the same is provided. The computer peripheral input system comprises a first input module, a second input module and control means having a communication interface installed therein. The first input module is used for inputting at least a first input data and generating a first input signal corresponding thereto. The second input module is used for inputting at least a second input data and generating a second input signal corresponding thereto. Control means reads and processes the first and second input signals, and then stores a first and second information respectively corresponding thereto. The first information represents the first input data. The second information represents the second input data. The communication interface sends the first and second information stored in control means by a polling method.Type: GrantFiled: December 31, 2001Date of Patent: August 16, 2005Assignee: Aiptek International Inc.Inventors: Ching-Chuan Chao, Chung-Wen Hsu
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Patent number: 6909426Abstract: The purpose of the present invention is to reduce power consumption caused by controlling circuit in transmitting/receiving process between tablet system and cord less-battery less pointer apparatus. The present invention provides multi-channel switches set produced in semi-conductor process to replace traditional analog switch and tri-state element used in prior art as signal transmitting/receiving selector of inductive loops of tablet, which can simplify controlling circuit, enhance power efficiency of signal transmitting/receiving between tablet system and cord less and cell less pointer apparatus, and increase speed of response of signal transmitting/receiving between tablet and cord less-battery less pointer apparatus.Type: GrantFiled: March 3, 2003Date of Patent: June 21, 2005Inventors: Ching-Chuan Chao, Chung-Wen Hsu
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Patent number: 6882339Abstract: A plurality of single-induction-loops are inserted in an electromagnetic induction system in which multi-induction-loop is deployed. Deployment of a multi-induction-loop layout is constituted by induction loops with sawtooth-shaped areas and close-like areas formed by -type sections of same and opposite phases for reducing the number of switch in use, completely deploying induction loops of X axis and Y axis on a same common contact, effectively reducing area demand of electromagnetic induction system, and thus increasing effective area of panel board in use. Moreover, in order to further enhance ability of interference immunity of electromagnetic induction system, a plurality of single-induction-loops are inserted around multi-induction-loop for isolating interference of noise to multi-induction-loop and thus relatively increasing linearity and efficiency of electromagnetic induction system.Type: GrantFiled: January 8, 2003Date of Patent: April 19, 2005Assignee: Aiptek International Inc.Inventors: Ching-Chuan Chao, Chih-An Chen, Shi-Hao Cheng
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Patent number: 6849810Abstract: An antenna loop structure applicable to a digitizer tablet is capable of reducing effect of electromagnetic interference (EMI) by aggregating a plurality of antenna loops, wherein each antenna loop further comprises a plurality of -shaped segmental antennas, and each pair of immediate neighboring segmental antennas is phase-inverted to each other for counteracting against external EMI.Type: GrantFiled: May 25, 2001Date of Patent: February 1, 2005Assignee: AIPTEK International Inc.Inventors: Ching-Chuan Chao, Chih-An Chen
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Publication number: 20040174343Abstract: The purpose of the present invention is to reduce power consumption caused by controlling circuit in transmitting/receiving process between tablet system and cord less-battery less pointer apparatus. The present invention provides multi-channel switches set produced in semi-conductor process to replace traditional analog switch and tri-state element used in prior art as signal transmitting/receiving selector of inductive loops of tablet, which can simplify controlling circuit, enhance power efficiency of signal transmitting/receiving between tablet system and cord less and cell less pointer apparatus, and increase speed of response of signal transmitting/receiving between tablet and cord less-battery less pointer apparatus.Type: ApplicationFiled: March 3, 2003Publication date: September 9, 2004Inventors: Ching-Chuan Chao, Chung-Wen Hsu
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Patent number: 6787715Abstract: A digitizer tablet comprises a plurality of physical antenna loops distributed along the X- and Y-directions of two-dimensional Cartesian coordinates (X, Y) on the digitizer tablet, wherein each physical antenna loop comprises a plurality of logical sections. For the logical sections of each of the physical antenna loops distributed in the same direction, the adjacent logical sections of the logical sections belong to different physical antenna loops.Type: GrantFiled: December 26, 2001Date of Patent: September 7, 2004Assignee: AIPTEK International Inc.Inventors: Ching-Chuan Chao, Chia-Jui Yeh
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Publication number: 20040130534Abstract: A plurality of single-induction-loops are inserted in an electromagnetic induction system in which multi-induction-loop is deployed. Deployment of a multi-induction-loop layout is constituted by induction loops with sawtooth-shaped areas and close-like areas formed by Π-type sections of same and opposite phases for reducing the number of switch in use, completely deploying induction loops of X axis and Y axis on a same common contact, effectively reducing area demand of electromagnetic induction system, and thus increasing effective area of panel board in use. Moreover, in order to further enhance ability of interference immunity of electromagnetic induction system, a plurality of single-induction-loops are inserted around multi-induction-loop for isolating interference of noise to multi-induction-loop and thus relatively increasing linearity and efficiency of electromagnetic induction system.Type: ApplicationFiled: January 8, 2003Publication date: July 8, 2004Inventors: Ching-Chuan Chao, Chih-An Chen, Shi-Hao Cheng
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Publication number: 20040125089Abstract: An electromagnetic induction device with a writing function is disclosed in this present invention. The design of this invention combines an electromagnetic induction device and a writing device in a pen-like device. The electromagnetic induction device can be employed as a pointer device of a tablet. The writing device can be used as an ink pen. Moreover, while writing on paper, the tablet can detect and calculate the coordinates of the writing device and save the coordinates in memory device, such as a RAM. After communicating with the host machine, the monitor can response and display the handwriting trace. Hence, it is very convenient for a user to bring and carry a pen-like device with multiple functions according to this invention.Type: ApplicationFiled: December 30, 2002Publication date: July 1, 2004Applicant: Aiptek International Inc.Inventors: Ching-Chuan Chao, Ping-Hung Chen, Chung-Wen Hsu
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Patent number: 6727439Abstract: A pressure sensitive pen is provided. The pressure sensitive pen comprises a core body, an elastic element, a first magnetic body having one coil formed of at least a wire wound around, a second magnetic body, a sliding member, a hollow cylindrical body with an annular element formed therein and an inductance-capacitance type resonant circuit. The resonant circuit is electrically connected with the first magnetic body having the coil wound around. When a force is upward applied on the core body, the force is further applied on the sliding member through the core body such that the sliding member in conjunction with the second magnetic body move upward and make the elastic element deformed, and changing a predetermined distance between the first magnetic body and the second magnetic body, thereby changing an inductance generated by the coil, and the resonance frequency of the resonant circuit is thus changed.Type: GrantFiled: January 28, 2002Date of Patent: April 27, 2004Assignee: Aiptek International Inc.Inventors: Ching-Chuan Chao, Bor-Sen Chang, Chung-Wen Hsu
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Publication number: 20040055793Abstract: A multi-induction loop layout of an electromagnetic inductive system is disclosed. The multi-induction loop layout of the invention comprises a plurality of inductive loops, one terminal of each inductive loop connecting to a loop switch, and the other terminal connecting to the common node. Every logical inductive loop is a relative close inductive loop, the relative close inductive loop possessing a plurality of -type sections, forming a sawtooth-shaped region and corresponding to and closing each other to form a plurality of close-like regions. The form of which gradually approaches the multi-induction loop layout.Type: ApplicationFiled: September 25, 2002Publication date: March 25, 2004Inventors: Ching-Chuan Chao, Chung-Wen Hsu
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Publication number: 20030217871Abstract: The invention, an improved device and method for the pointer system of a digitizer tablet, is to repetitiously emit signals sequentially from a specific set of inductive loop when the position pointed by the wireless pointer device is located within a range formed by this specific set of inductive loop induced most intensively during a locally scanning process. After a transient energy storage of the wireless pointer device, corresponding resonant signals are emitted out and are received sequentially by several sets of inductive loop located on the digitizer tablet in the neighborhood of this specific set of inductive loop and, by these signals, the wireless pointer device's coordinate position on the digitizer tablet is calculated out relatively.Type: ApplicationFiled: October 23, 2002Publication date: November 27, 2003Applicant: AIPTEK International Inc.Inventors: Ching-Chuan Chao, Chung-Wen Hsu
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Publication number: 20030188899Abstract: A structure of a prepositive electromagnetic tablet with a transparent antenna and the method for fabricating said prepositive electromagnetic tablet with a transparent antenna is disclosed. The electromagnetic tablet according to this present invention comprises a durable transparent substrate, a transparent antenna layer, and a transparent protective layer. Further, the above-mentioned electromagnetic tablet can be applied in front of LCD panel (at the user's side). Therefore, it is more convenient regarding the function of hand-written input and hand-written drawing, which can be directly performed on a displayer.Type: ApplicationFiled: April 9, 2002Publication date: October 9, 2003Inventors: Ching-Chuan Chao, Chih-An Chen
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Patent number: 6606068Abstract: The layout of multi-antenna loops in this invention comprises: a plurality of antenna loops, wherein one terminal of each antenna loop is electrically coupled with an antenna switch and the other terminal is electrically connected to a ground wire. All antenna loops are symmetrical antenna loops each of which contains a plurality of n-shaped sections to form sawtooth-shaped regions and compound into a plurality of dummy closed regions. If the symmetrical antenna loops are in-phase state, the plurality of sawtooth-shaped regions consist of the plurality of n-shaped sections with the non-interlacing method; if the symmetrical antenna loops are oppositephase state, the plurality of sawtooth-shaped regions consist of the n-shaped sections with the interlacing method.Type: GrantFiled: February 5, 2002Date of Patent: August 12, 2003Assignee: Aiptek International Inc.Inventors: Ching-Chuan Chao, Chih-An Chen, I-Wen Wang
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Publication number: 20030146881Abstract: The layout of multi-antenna loops in this invention comprises: a plurality of antenna loops, wherein one terminal of each antenna loop is electrically coupled with an antenna switch and the other terminal is electrically connected to a ground wire. All antenna loops are symmetrical antenna loops each of which contains a plurality of n-shaped sections to form sawtooth-shaped regions and compound into a plurality of dummy closed regions. If the symmetrical antenna loops are in-phase state, the plurality of sawtooth-shaped regions consist of the plurality of n-shaped sections with the non-interlacing method; if the symmetrical antenna loops are oppositephase state, the plurality of sawtooth-shaped regions consist of the n-shaped sections with the interlacing method.Type: ApplicationFiled: February 5, 2002Publication date: August 7, 2003Inventors: Ching-Chuan Chao, Chih-An Chen, I-Wen Wang
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Publication number: 20030141119Abstract: A pressure sensitive pen is provided. The pressure sensitive pen comprises a core body, an elastic element, a first magnetic body having one coil formed of at least a wire wound around, a second magnetic body, a sliding member, a hollow cylindrical body with an annular element formed therein and an inductance-capacitance type resonant circuit. The resonant circuit is electrically connected with the first magnetic body having the coil wound around. When a force is upward applied on the core body, the force is further applied on the sliding member through the core body such that the sliding member in conjugation with the second magnetic body move upward and make the elastic element deformed, and changing a predetermined distance between the first magnetic body and the second magnetic body, thereby changing an inductance generated by the coil, and the resonance frequency of the resonant circuit is thus changed.Type: ApplicationFiled: January 28, 2002Publication date: July 31, 2003Inventors: Ching-Chuan Chao, Bor-Sen Chang, Chung-Wen Hsu
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Publication number: 20030122786Abstract: A computer peripheral input system with two input types and a method of data communication for the same is provided. The computer peripheral input system comprises a first input module, a second input module and control means having a communication interface installed therein. The first input module is used for inputting at least a first input data and generating a first input signal corresponding thereto. The second input module is used for inputting at least a second input data and generating a second input signal corresponding thereto. Control means reads and processes the first and second input signals, and then stores a first and second information respectively corresponding thereto. The first information represents the first input data. The second information represents the second input data. The communication interface sends the first and second information stored in control means by a polling method.Type: ApplicationFiled: December 31, 2001Publication date: July 3, 2003Inventors: Ching-Chuan Chao, Chung-Wen Hsu
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Publication number: 20030010544Abstract: A low EMI digitizer tablet is covered with a shielding layer on an antenna circuit thereof to shield the digitizer tablet from invasion of electromagnetic interference (EMI) and thereby enhance the immunity of the digitizer tablet against noise.Type: ApplicationFiled: July 10, 2001Publication date: January 16, 2003Inventors: Ching-Chuan Chao, Chih-An Chen