Patents by Inventor Ann Alejandro
Ann Alejandro 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: 20210263365Abstract: An example device includes a light source, a liquid crystal layer, and an array of pixel electrodes disposed between the light source and the liquid crystal layer. The array of pixel electrodes is to control orientation of liquid crystal of the liquid crystal layer to modulate light incident from the light source to produce an image composed of pixels. The example device further includes an array of scattering electrodes to selectively influence orientation of liquid crystal of the liquid crystal layer to degrade contrast of selected pixels of the image.Type: ApplicationFiled: November 14, 2018Publication date: August 26, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Hsing-Hung Hsieh, Chi Hao Chang, Ann Alejandro Villegas
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Publication number: 20210241693Abstract: In an example implementation according to aspects of the present disclosure, a system including a controller to receive a temperature value, from a temperature sensor corresponding to a sub-pixel in an organic light emitting display. The controller calculates a luminous value of the sub-pixel based on the temperature value and a function corresponding to a degradation of luminosity over time and temperature. The controller determines, based on the luminous value, a corrected luminous value corresponding to a target luminous value. The controller retrieves a voltage value from a second database, wherein the second database comprises a luminous-voltage relationship. The controller applies the voltage value to the sub-pixel.Type: ApplicationFiled: September 26, 2018Publication date: August 5, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Hsing-Hung Hsieh, Cheng-Hua Yu, Ann Alejandro Villegas
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Publication number: 20210240021Abstract: A privacy display may include a collimated backlight (CBL) layer; a polymer-dispersed liquid crystal (PDLC) layer; and a liquid crystal display (LCD) layer; wherein the PDLC layer is, upon selective application of a voltage, operates in a sharing mode and a privacy mode, the sharing mode being made to operate at a first luminance mode and a second luminance mode; wherein, at the second luminance mode, the voltage is not applied to the PDLC layer and, at the first luminance mode, the voltage is applied to the PDLC; and wherein a minimal luminance of the second luminance mode is 1.5 times or greater than a maximum luminance of the first luminance mode.Type: ApplicationFiled: October 2, 2018Publication date: August 5, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Hsing-Hung Hsieh, Wan Ching Lee, Ann Alejandro Villegas
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Publication number: 20210200294Abstract: A technique includes detecting a power transition of a processor-based system and controlling operation of a camera of the processor-based system based on the detection of the power transition. Controlling the operation of the camera includes triggering a process to disable the camera in response to detection of the power transition.Type: ApplicationFiled: July 6, 2017Publication date: July 1, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Alan Man Pan TAM, Hui Leng LIM, Ann Alejandro VILLEGAS
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Publication number: 20210191223Abstract: The present disclosure is drawn to privacy films for electronic displays. In one example, a privacy film for an electronic display can include a louver film. The louver film can include: a plurality of high refractive index slats with a refractive index of about 1.5 to about 3 and having a trapezoidal cross section narrowing toward a viewer side of the louver film; and a plurality of low refractive index slats between the high refractive index slats, having a refractive index less than the refractive index of the high refractive index slats by about 0.1 to about 2. An electrophoretic ink can be optically associated with the low refractive index slats, including opaque particles that are electrically mobile to cause modification of light transmission therethrough. A first and second transparent electrode film can be on a viewer side and a rear side of the electrophoretic ink, respectively.Type: ApplicationFiled: September 12, 2018Publication date: June 24, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Super Liao, Hsing-Hung Hsieh, Ann Alejandro Villegas
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Publication number: 20210183307Abstract: An organic light-emitting diode (OLED) circuit that includes a first, second, third, fourth, fifth, sixth, seventh, and eighth transistor; a capacitor; a first select line, a second select line, and a third select line; and a data line; wherein the consecutive selection of the first select line, second select line, and third select line compensates for a threshold voltage in the second transistor.Type: ApplicationFiled: September 5, 2018Publication date: June 17, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Hsing-Hung Hsieh, Super Liao, Ann Alejandro Villegas
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Patent number: 11036454Abstract: Example implementations relate to display control. In some examples, a computing device may include a first processing resource, a second processing resource, a first display controlled by the first processing resource, and a second display storable in a first position within a pocket of the first display and controlled by the second processing resource. The second processing resource may provide notification data content to the second display when the second display is stored within the first position and the first processing resource of the computing device is in a non-active mode. The second processing resource may share control of the second display with the first processing resource when the second display is in a second position extended from the first display and while the computing device is in an active mode.Type: GrantFiled: March 22, 2018Date of Patent: June 15, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Alexander Wayne Clark, Ann Alejandro Villegas, Hsing-Hung Hsieh
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Patent number: 11029560Abstract: Example implementations relate to liquid crystal display (LCD) lighting modes. An example device can include an LCD, a wide gamut light-emitting diode (LED) light set to backlight the LCD, a narrow gamut LED light set to backlight the LCD and a controller communicatively coupled to the LCD. The controller can switch the LCD between a wide gamut lighting mode, a narrow gamut lighting mode, and a high brightness lighting mode in response to changes in ambient light and content displayed on the LCD.Type: GrantFiled: December 12, 2017Date of Patent: June 8, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hsing-Hung Hsieh, Alexander Wayne Clark, Ann Alejandro Villegas
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Publication number: 20210149460Abstract: Example displays having transparent areas for cameras are disclosed. An example display has a first source line including a first portion composed of a first material and a second portion composed of a second material different than the first material. A first gate line includes a first portion composed of a third material and a second portion composed of a fourth material, the fourth material being different than the third material. A second gate line includes a first portion composed of the third material and a second portion composed of the fourth material. The first portion of the source line, the first portion of the first gate line, and the first portion of the second gate line define a non-transparent area of the display. The second portion of the source line, the second portion of the first gate line, and second portion of the second gate line define a transparent area of a display.Type: ApplicationFiled: July 31, 2018Publication date: May 20, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Hsing-Hung Hsieh, Alan Man Pan Tam, Ann Alejandro Villegas
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Patent number: 11009728Abstract: In one example in accordance with the present disclosure, a screen privacy device is described. The screen privacy device includes first bands of a polymer-dispersed liquid crystal (PDLC) compound. These first bands have first light-scattering properties. The screen privacy device also includes second bands of the PDLC compound, the second bands having second light-scattering properties. In this example, the second light-scattering properties are different than the first light-scattering properties and the first bands and the second bands alternate along a dimension of the screen privacy device.Type: GrantFiled: July 2, 2018Date of Patent: May 18, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Hsing-Hung Hsieh, Chi Hao Chang, Ann Alejandro Villegas
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Publication number: 20200409645Abstract: Example implementations relate to display control. In some examples, a computing device may include a first processing resource, a second processing resource, a first display controlled by the first processing resource, and a second display storable in a first position within a pocket of the first display and controlled by the second processing resource. The second processing resource may provide notification data content to the second display when the second display is stored within the first position and the first processing resource of the computing device is in a non-active mode. The second processing resource may share control of the second display with the first processing resource when the second display is in a second position extended from the first display and while the computing device is in an active mode.Type: ApplicationFiled: March 22, 2018Publication date: December 31, 2020Inventors: ALEXANDER WAYNE CLARK, ANN ALEJANDRO VILLEGAS, HSING-HUNG HSIEH
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Publication number: 20200400980Abstract: In one example in accordance with the present disclosure, a screen privacy device is described. The screen privacy device includes first bands of a polymer-dispersed liquid crystal (PDLC) compound. These first bands have first light-scattering properties. The screen privacy device also includes second bands of the PDLC compound, the second bands having second light-scattering properties. In this example, the second light-scattering properties are different than the first light-scattering properties and the first bands and the second bands alternate along a dimension of the screen privacy device.Type: ApplicationFiled: July 2, 2018Publication date: December 24, 2020Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Hsing-Hung Hsieh, Chi Hao Chang, Ann Alejandro Villegas
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Publication number: 20200319508Abstract: Example implementations relate to liquid crystal display (LCD) lighting modes. An example device can include an LCD, a wide gamut light-emitting diode (LED) light set to backlight the LCD, a narrow gamut LED light set to backlight the LCD and a controller communicatively coupled to the LCD. The controller can switch the LCD between a wide gamut lighting mode, a narrow gamut lighting mode, and a high brightness lighting mode in response to changes in ambient light and content displayed on the LCD.Type: ApplicationFiled: December 12, 2017Publication date: October 8, 2020Inventors: Hsing-Hung Hsieh, Alexander Wayne Clark, Ann Alejandro Villegas
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Patent number: 10317954Abstract: Examples disclosed herein provide electroacoustic devices of a computing device. An example computing device includes a base member and a display member rotatably connected to the base member via a hinge. The display member is to cover a top surface of the base member when the device is in a closed position. The computing device includes an electroacoustic device residing within a cavity along the top surface of the base member. As an example, when the display member is to be opened from the closed position of the device, the electroacoustic device is to rotate out from the cavity.Type: GrantFiled: January 11, 2016Date of Patent: June 11, 2019Assignee: Hewett-Packard Development Company, L.P.Inventors: Robert C. Brooks, Ann Alejandro Villegas, Charlie Ku
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Publication number: 20180224903Abstract: Examples disclosed herein provide electroacoustic devices of a computing device. An example computing device includes a base member and a display member rotatably connected to the base member via a hinge. The display member is to cover a top surface of the base member when the device is in a closed position. The computing device includes an electroacoustic device residing within a cavity along the top surface of the base member. As an example, when the display member is to be opened from the closed position of the device, the electroacoustic device is to rotate out from the cavity.Type: ApplicationFiled: January 11, 2016Publication date: August 9, 2018Inventors: Robert C. BROOKS, Ann Alejandro VILLEGAS, Charlie KU
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Publication number: 20070099481Abstract: A media power protection system comprises a media controller configured to detect a type of media card coupled to a multi-card connector, and a protection circuit configured to selectively enable at least one of a plurality of power supply interfaces of the multi-card connector based on the type of media card.Type: ApplicationFiled: October 28, 2005Publication date: May 3, 2007Inventors: Ann Alejandro, Brian Ryder, Jeffrey Jeansonne
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Publication number: 20060233279Abstract: In accordance with an embodiment of the invention, a system comprises control logic and a transmitter. The transmitter is operatively coupled to the control logic and has an output voltage. The control logic adjusts a magnitude of the output voltage based on an error rate associated with the transmitter.Type: ApplicationFiled: April 13, 2005Publication date: October 19, 2006Inventors: Brian Ryder, Ann Alejandro, Michael Gove