Patents by Inventor Martin John Edwards
Martin John Edwards 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: 20140028623Abstract: A sensing method for a touch sensing device is provided. In one embodiment, for one set of interlaced receiving electrode and transmitting electrodes of the touch sensing device, an integrator coupled to the receiving electrode is reset only one time. In another embodiment, for each group of sensing electrodes, an integrator coupled to the sensing electrodes is reset only one time. Accordingly, the rate at which the touch sensing array is sensed may be increased. Noise reduced by the process of resetting the integrator due to charge injection effects may be decreased.Type: ApplicationFiled: October 2, 2013Publication date: January 30, 2014Applicant: INNOLUX CORPORATIONInventors: Martin John EDWARDS, John Richard AYRES
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Current measurement circuit and measuring method thereof including a binary weighted capacitor array
Patent number: 8405407Abstract: A current measurement circuit for measuring a current is provided. The current measurement circuit includes a current integrating unit with a capacitor array, a comparator coupled to the current integrating unit, and a control unit coupled to the comparator and the current integrating unit. The current integrating unit integrates the current on the capacitor array to obtain an input voltage. The comparator compares the input voltage with a specific voltage to generate a compare output. The control unit generates a control signal to apply to the capacitor array of the current integrating unit according to the compare output. A magnitude of the current is obtained according to the control signal and the capacitance of the capacitor array.Type: GrantFiled: April 29, 2010Date of Patent: March 26, 2013Assignee: Chimei Innolux CorporationInventors: Martin John Edwards, Nicola Bramante -
Patent number: 8319721Abstract: A method is provided of controlling an illumination source for a display device which comprises a display modulator for modulating the light provided by the illumination source. The method comprises using a light sensor arrangement to generate a first signal based on an ambient light level with first illumination source drive condition, and using the light sensor arrangement to generate a second signal based on the same ambient light level but with second illumination source drive condition different to the first drive condition. The first and second signals are processed to compensate for differences in the light sensor arrangement response characteristics when operating with the first and second illumination source drive conditions thereby to derive a compensated light sensor arrangement characteristic covering both the first and second illumination source drive conditions. Ambient light levels detected using this model of the characteristic are used to control the display device.Type: GrantFiled: December 23, 2008Date of Patent: November 27, 2012Assignee: Chimei Innolux CorporationInventors: Martin John Edwards, John Richard Ayres
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Patent number: 8300021Abstract: A position sensing display integrates a touch sensor with an active matrix LCD panel. X sense electrodes and y sense electrodes in respective layers on a front panel are coupled capacitatively to respective sense circuits on active rear panel. A common electrode is driven, and the resulting signal on the x-sense electrodes and y sense electrodes is measured by the respective sense circuits. Changes in the resulting signal when sensed object approaches are measured to locate the sensed object.Type: GrantFiled: December 19, 2008Date of Patent: October 30, 2012Assignee: Chimei Innolux CorporationInventors: John Richard Ayres, Martin John Edwards
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Publication number: 20120133594Abstract: A sensing method for a touch sensing device is provided. In one embodiment, for one set of interlaced receiving electrode and transmitting electrodes of the touch sensing device, an integrator coupled to the receiving electrode is reset only one time. In another embodiment, for each group of sensing electrodes, an integrator coupled to the sensing electrodes is reset only one time. Accordingly, the rate at which the touch sensing array is sensed may be increased. Noise reduced by the process of resetting the integrator due to charge injection effects may be decreased.Type: ApplicationFiled: November 29, 2010Publication date: May 31, 2012Applicant: CHIMEI INNOLUX CORPORATIONInventors: Martin John Edwards, John Richard Ayres
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Publication number: 20120127111Abstract: A control method for a display device is provided. The sensing device is contacted by at least one object and includes a sensing array formed by a plurality of parallel sensing electrodes. The control method includes the steps of: identifying a contact area of the at least one object in the sensing array; and evaluating a dimension of the at least one object according to the identified contact area. In one embodiment, a width of at least one of the plurality of sensing electrodes is controlled according to the evaluated dimension of the at least one object. In other embodiments, the distance between two sensing electrodes grouped as one measurement electrode set for capacitance differential measurement is determined according to the evaluated dimension of the at least one object.Type: ApplicationFiled: November 19, 2010Publication date: May 24, 2012Applicant: CHIMEI INNOLUX CORPORATIONInventor: Martin John Edwards
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Publication number: 20120127116Abstract: A sensing device is provided. First to third receiving electrodes extend in a first direction. First and third receiving electrodes are respectively disposed on two sides of the second receiving electrode. The first to fourth transmitting electrodes are disposed on a row extending in a second direction. The first and second transmitting electrodes are respectively disposed on two sides of the first receiving electrode, the third and fourth transmitting electrodes are respectively disposed on two sides of the third receiving electrode, and the second and third transmitting electrode are respectively disposed on two sides of the second receiving electrode. The first, second third and fourth transmitting electrodes are independently controlled by a transmitter. A receiver generates a sensing signal according to a signal level is at least one of the first, second, and third receiving electrodes.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: CHIMEI INNOLUX CORPORATIONInventor: Martin John Edwards
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Publication number: 20120081298Abstract: A touch sensing panel includes a substrate and a plurality of first sub-electrodes. The first sub-electrodes are formed on the substrate and disposed in parallel. The first sub-electrodes extend in a first direction. Each set of the successive first sub-electrodes is grouped as a group into a predetermined number to form one sensing electrode. A distance between two successive sensing electrodes is less than the predetermined number multiplied by a distance between two successive first sub-electrodes.Type: ApplicationFiled: October 1, 2010Publication date: April 5, 2012Applicant: CHIMEI INNOLUX CORPORATIONInventors: Martin John Edwards, John Richard Ayres
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Publication number: 20120019473Abstract: A system for displaying images is provided. The system includes a capacitive touch sensor device includes a dielectric layer having a sensing area and covered by a transparent substrate. A plurality of series of first sense electrodes and a plurality of series of second sense electrodes are embedded in a first level of the dielectric layer and within the sensing area. Each series of first sense electrodes extends along a first direction and each series of second sense electrodes extends along a second direction substantially different from the first direction. A plurality of signal lines are embedded in a second level lower than the first level of the dielectric layer and extends along the second direction. Each signal line is correspondingly and electrically connected to one of the plurality of series of first sense electrodes.Type: ApplicationFiled: July 21, 2010Publication date: January 26, 2012Applicant: CHIMEI INNOLUX CORPORATIONInventor: Martin John Edwards
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Patent number: 7965132Abstract: A transistor circuit is provided. The transistor circuit includes a first output transistor, a second output transistor, and a switch arrangement. The first and second output transistors are arranged for providing an output signal to a common output of the transistor circuit. The switch arrangement couples an output of the first output transistor and the output of the second output transistor to the common output in sequence. The first and second output transistors are controlled to provide the same steady state output. The switch arrangement is adapted such that when the output of the first output transistor is coupled to the common output, changes in drive conditions voltage of the first output transistor are isolated from the second output transistor.Type: GrantFiled: December 24, 2008Date of Patent: June 21, 2011Assignee: Chimei Innolux CorporationInventors: Martin John Edwards, Nicola Bramante
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Publication number: 20100308845Abstract: A current measurement circuit for measuring a current is provided. The current measurement circuit includes a current integrating unit with a capacitor array, a comparator coupled to the current integrating unit, and a control unit coupled to the comparator and the current integrating unit. The current integrating unit integrates the current on the capacitor array to obtain an input voltage. The comparator compares the input voltage with a specific voltage to generate a compare output. The control unit generates a control signal to apply to the capacitor array of the current integrating unit according to the compare output. A magnitude of the current is obtained according to the control signal and the capacitance of the capacitor array.Type: ApplicationFiled: April 29, 2010Publication date: December 9, 2010Applicant: CHIMEI INNOLUX CORPORATIONInventors: Martin John Edwards, Nicola Bramante
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Patent number: 7835195Abstract: The memory comprises at least two data storage units using hot carrier stressing damage to store data. Each data storage unit comprises the first terminal, the second terminal and a third terminal. When the first cross voltage between the second and third terminals is higher than the first threshold voltage and the second cross voltage between the first and third terminals is higher than the second threshold voltage, the data storage unit is in the first writing operation.Type: GrantFiled: December 10, 2008Date of Patent: November 16, 2010Assignee: TPO Displays Corp.Inventors: Martin John Edwards, John Richard Ayres, Nigel David Young
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Patent number: 7791380Abstract: A current sampling circuit including a current sampling transistor, a capacitor arrangement between the gate and source of the current sampling transistor and an amplifier provided in a feedback loop between the gate and source of the current sampling transistor. A switch controls the circuit to sample a gate-source voltage corresponding to a current being sampled onto the capacitor arrangement. The capacitor arrangement comprises a first capacitor circuit for sampling a gate source voltage in a first sampling phase and a second capacitor circuit, with the first and second capacitor circuits arranged for together sampling the gate source voltage in a second sampling phase. The operating point of the amplifier is shifted between the first and second phases based on the gate source voltage sampled in the first sampling phase.Type: GrantFiled: December 17, 2008Date of Patent: September 7, 2010Assignee: TPO Displays Corp.Inventors: Nicola Bramante, Martin John Edwards, John Richard Ayres
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Publication number: 20090273572Abstract: A touch sensor input device includes a first and second array of electrodes, the electrodes in the first array being orthogonal to the electrodes in the second array. A capacitor sensing arrangement senses an electrode capacitance signal which varies in the presence of a touch input. The capacitance signals for groups of electrodes in each array are combined in order to derive respective individual sense signals. This arrangement has electrodes with a finer resolution than the sensing resolution, and this gives improved ability to sense accurately the position of the touch input.Type: ApplicationFiled: April 30, 2009Publication date: November 5, 2009Applicant: TPO DISPLAYS CORP.Inventors: Martin John EDWARDS, John Richard AYRES, Nicola BRAMANTE
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Publication number: 20090179868Abstract: A position sensing display integrates a touch sensor with an active matrix LCD panel. X sense electrodes and y sense electrodes in respective layers on a front panel are coupled capacitatively to respective sense circuits on active rear panel. A common electrode is driven, and the resulting signal on the x-sense electrodes and y sense electrodes is measured by the respective sense circuits. Changes in the resulting signal when sensed object approaches are measured to locate the sensed object.Type: ApplicationFiled: December 19, 2008Publication date: July 16, 2009Applicant: TPO DISPLAY CORP.Inventors: John Richard AYRES, Martin John EDWARDS
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Publication number: 20090167422Abstract: A transistor circuit is provided. The transistor circuit includes a first output transistor, a second output transistor, and a switch arrangement. The first and second output transistors are arranged for providing an output signal to a common output of the transistor circuit. The switch arrangement couples an output of the first output transistor and the output of the second output transistor to the common output in sequence. The first and second output transistors are controlled to provide the same steady state output. The switch arrangement is adapted such that when the output of the first output transistor is coupled to the common output, changes in drive conditions voltage of the first output transistor are isolated from the second output transistor.Type: ApplicationFiled: December 24, 2008Publication date: July 2, 2009Applicant: TPO DISPLAYS CORP.Inventors: Martin John EDWARDS, Nicola BRAMANTE
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Publication number: 20090167364Abstract: A current sampling circuit including a current sampling transistor, a capacitor arrangement between the gate and source of the current sampling transistor and an amplifier provided in a feedback loop between the gate and source of the current sampling transistor. A switch controls the circuit to sample a gate-source voltage corresponding to a current being sampled onto the capacitor arrangement. The capacitor arrangement comprises a first capacitor circuit for sampling a gate source voltage in a first sampling phase and a second capacitor circuit, with the first and second capacitor circuits arranged for together sampling the gate source voltage in a second sampling phase. The operating point of the amplifier is shifted between the first and second phases based on the gate source voltage sampled in the first sampling phase.Type: ApplicationFiled: December 17, 2008Publication date: July 2, 2009Applicant: TPO Displays CorpInventors: Nicola Bramante, Martin John Edwards, John Richard Ayres
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Publication number: 20090167676Abstract: A method is provided of controlling an illumination source for a display device which comprises a display modulator for modulating the light provided by the illumination source. The method comprises using a light sensor arrangement to generate a first signal based on an ambient light level with first illumination source drive condition, and using the light sensor arrangement to generate a second signal based on the same ambient light level but with second illumination source drive condition different to the first drive condition. The first and second signals are processed to compensate for differences in the light sensor arrangement response characteristics when operating with the first and second illumination source drive conditions thereby to derive a compensated light sensor arrangement characteristic covering both the first and second illumination source drive conditions. Ambient light levels detected using this model of the characteristic are used to control the display device.Type: ApplicationFiled: December 23, 2008Publication date: July 2, 2009Applicant: TPO Displays Corp.Inventors: Martin John Edwards, John Richard Ayres
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Publication number: 20090167713Abstract: A position sensing display integrates a touch sensor with an active matrix LCD panel. The panel includes both coarse and fine sensing means. The fine sensing means includes fine sense electrodes combined together in groups, the groups being interdigitated i.e. alternating across the display. In use, the fine sensing electrodes determine the position of a sensed object such as a stylus or finger accurately but non-uniquely, and the coarse sensing means determines which of the plurality of non-unique positions is correct.Type: ApplicationFiled: December 19, 2008Publication date: July 2, 2009Applicant: TPO Displays Corp.Inventor: Martin John EDWARDS
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Publication number: 20090161450Abstract: The memory comprises at least two data storage units using hot carrier stressing damage to store data. Each data storage unit comprises the first terminal, the second terminal and a third terminal. When the first cross voltage between the second and third terminals is higher than the first threshold voltage and the second cross voltage between the first and third terminals is higher than the second threshold voltage, the data storage unit is in the first writing operation.Type: ApplicationFiled: December 10, 2008Publication date: June 25, 2009Applicant: TPO DISPLAYS CORP.Inventors: Martin John Edwards, John Richard Ayres, Nigel David Young