Hewlett-packard Development Company, L.P.

Other

Ann Alejandro Villegas

Hsing-Hung Hsieh

Chi Hao Chang

Alexander Wayne Clark

Alan Man Pan Tam

Kuan-Ting Wu

Robert C Brooks

Hui Leng Lim

Super Liao

Qijun Chen

Fangyong Dai

Cheng-Hua Yu

DeHuei Chen

Charlie Ku

Ling Wei Chung

Daniel Joseph Luc

In some examples, an electronic device comprises a processor and a power circuit coupled to the processor. The power circuit is to provide power to the processor and to measure a current drawn from the power circuit by the processor. The electronic device also comprises a voltage regulator controller coupled to the processor and the power circuit. The voltage regulator controller is to receive a current usage prediction from the processor, receive the measurement from the power circuit, compare the current usage prediction and the measurement, and, based on the comparison, drive the power circuit in accordance with the measurement instead of the current usage prediction.

Controllers to drive power circuits based on currents drawn

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.

Privacy films for electronic displays

An example of an apparatus is provided. The apparatus includes a display portion and a camera. In addition, the apparatus includes a thin film transistor substrate extending over the display portion and the camera. Furthermore, the apparatus includes an image generation layer disposed under the thin film transistor substrate within the display portion. Also, the apparatus includes a polymer dispersed liquid crystal disposed between the thin film transistor substrate and the camera. The polymer dispersed liquid crystal is to be switched between an opaque state and a clear state. The opaque state is to block the camera from receiving imaging light. The clear state allows light to pass through the polymer dispersed liquid crystal.

Electronic shutters to enhance privacy

A control circuit of a pixel-addressable display corrects a brightness of a pixel element of a pixel circuit of the display based on a curvature of a curvable area of the display. The control circuit selectively applies data line voltages to the pixel circuit. The pixel circuit applies a driving voltage to the pixel element based on the data line voltages.

Pixel-addressable display having curvable area

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.

Arrays of electrodes to control pixel contrast at display devices

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.

Displays with partial transparent areas

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.

Controlling operations of cameras based on power state transitions

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.

Temperature based OLED sub-pixel luminosity correction

In example implementations, a display is provided. The display includes a first portion and a second portion. The first portion includes a first plurality of light emitting diodes (LEDs) that emit light in a first direction. The second portion includes a combination of the first plurality of LEDs that emit light in the first direction and a second plurality of LEDs that emit light in a second direction that is opposite the first direction to form a dual-sided display.

Dual-sided displays

Semiconductor materials can include from about 11 at % to about 50 at % of a carrier mobility contributor selected from a period 6 metal or a period 5 metal, wherein the period 6 metal is lead and the period 5 metal is indium, tin, cadmium, or a combination thereof, and wherein the carrier mobility contributor is not a combination of the period 6 metal and the period 5 metal; from about 0.6 at % to about 25 at % of an amorphous phase stabilizer, wherein the amorphous phase stabilizer is selected from indium, tin, cadmium, zinc, gallium, or a combination thereof when the carrier mobility contributor is the period 6 metal, or the amorphous phase stabilizer is selected from zinc, gallium, or a combination thereof when the carrier mobility contributor is the period 5 metal; from about 0.3 at % to about 18 at % of a semiconductivity controller including an element having a standard electrode potential from about &#x2212;0.8 to about &#x2212;3.05; and from about 45 at % to about 67 at % oxygen.

Semiconductor materials

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.

Display control

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.

Liquid crystal display lighting modes

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.

Screen privacy devices with alternating polymer-dispersed liquid crystal bands

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.

Electroacoustic devices for a computing device

An educational game to reinforce the rules of etiquette is described. A marker is passed between players when a player catches another player in a violation of the announced rules of etiquette. The player having the marker at the end of the game is subject to a sanction. Alternatively, the player having the marker at the end of the game is entitled to a reward.

Growing community of inventors

Spring, TX, United States of America

Ann Alejandro Villegas