Amazon Technologies, Inc.

Hewlett-packard Development Company, L.p.

Other

Palm, Incorporated

Violin Memory Inc.

James Samuel Bowen

Weiping Dou

Robert Waverly Zehner

Varadarajan Gopalakrishnan

In Chul Hyun

Menashe Haskin

Avi Kopelman

Jeffrey Braun Doar

Olivier Boireau

Allen Lee

David Y Woo

Yoon Kean Wong

Nisha D Talagala

Edward Dietz Crump

Manish Lachwani

Martin Patterson

David Berbessou

Hannah Rebecca Lewbel

Daniel Christopher Bay

David Isbister

Jay Michael Puckett

Chun Wun Yeung

Vijay Kumar Manyam

Deborah May Shepard

Berry Kercheval

Edward Pernicka

Devices such as electronic book readers, televisions, and so forth may use reflective display technologies. Described herein are devices and methods for ambient light sensing for use in conjunction with displays. A light guide panel is coupled to a light sensor to measure ambient light impinging on the light guide panel. Where the display is reflective, the light guide panel may be configured to provide for illumination of the display.

Ambient light sensing for display

Techniques and apparatuses are disclosed to adjust an intensity of light emitted from front lights and/or to adjust a visual representation of content displayed by an electronic device based at least in part on a measurement of light intensity by a light sensor. An electronic display may present a visual representation of objects including text and images, which may be subject to changes in size and contrast due to the measured levels of ambient light. A display controller may also control activation and/or intensity of lights used to illuminate the electronic display based on the measurement of light intensity by the light sensor in addition to or separate from the adjustments to contrast and size of the content.

Display adjustments using a light sensor

Architectures and techniques are described to provide assistance to read electronic books. In particular, a computing device may receive input from an individual while the individual is reading an electronic book, such as voice input, gaze tracking input, touch screen input, and so on. Based on the input gathered while the individual reads the electronic book, the computing device may determine a particular portion of the electronic book, such as one or more words of the electronic book, that the individual is reading. The computing device may also utilize the input gathered while the individual reads the electronic book to determine whether the individual needs assistance in reading one or more words of the electronic book, such as assistance in pronouncing the one or more words. The computing device may then provide assistance to the individual to read the one or more words.

Providing assistance to read electronic books

A remote control is used to control one or more media devices which may be in various media device states during operation. Based on media device state data, different media device control profiles may be applied. The media device control profiles may specify mapping of particular buttons on the remote control to particular functions on the media device, designate a communication path to use, and so forth.

Media device control profile selection

A projection and camera system projects content onto a passive, multi-surface projection screen. When a first surface of the screen is oriented to receive the projected images, the system detects this first surface and projects content associated with that surface of the screen. When a second surface is oriented to receive the projected images, the system detects this change from the first surface to the second surface and projects different content associated with the second surface. In this manner, to switch between different content or different applications, the user merely needs to turn the screen over.

Projection system with multi-surface projection screen

A user device receives a command to transmit information at a transmit power level specified by a wireless carrier. The user device determines whether transmitting the information at the specified transmit power level using a first duty cycle will cause the user device to violate a condition. Responsive to determining that transmitting the information at the specified transmit power level using the first duty cycle will cause the user device to violate the condition, the user device determines a new duty cycle that is lower than the first duty cycle, and transmits the information using the new duty cycle.

Duty cycling to reduce average transmit power

A user device having a non-radiating exciter operatively coupled to feed a multi-band aperture antenna is described.

Antenna with an exciter

A user device receives a command to transmit information at a transmit power level specified by a wireless carrier. The user device makes a determination as to whether transmitting the information at the specified transmit power level will cause the user device to violate a condition. When it is determined that transmitting the information at the specified transmit power level will cause the user device to violate the condition, the user device dynamically computes a new transmit power level that is lower than the specified transmit power level. The user device then transmits the information at the new transmit power level.

Power management for wireless transmissions

An electronic device in a low power mode, for example an eBook reader device, may use a fast awake module to quickly update a display. The electronic device may receive an interrupt, begin to awaken, present a cached pre-rendered image on the display, and may resume the low power mode or pre-render additional images to refill the cache before resuming the low power mode.

Fast awake from low power mode

Techniques and apparatuses are disclosed to adjust a visual representation of content displayed by an electronic device based at least in part on a measured light intensity. In some aspects, a light sensor may be used to measure a light intensity of ambient light. An electronic display may present a visual representation of objects including text and images. A display controller may control aspects of the electronic display based on at least the light intensity, such as a font size of the text, size of the images, or contrast of the text and the images. In further aspects, the electronic display may be an electronic paper display.

Light sensor to adjust contrast or size of objects rendered by a display

Various embodiments are directed to systems and techniques for reducing power consumption in a mobile computing device. In one or more embodiments, a mobile computing device may be arranged to determine a user environment based on detected antenna impedance or detected current. After the user environment is determined, the mobile computing device may confirm that total radiation power (TRP) for the mobile computing device at an initial conducted power level exceeds the minimum TRP threshold required by the network carrier to receive acceptable quality of service (QoS). Based on the excess TRP for the particular user environment, the mobile computing device may determine a reduced conducted power level to be input to an antenna system. Accordingly, significant power savings may be achieved. To save additional power, the mobile computing device may automatically adjust and/or improve antenna impedance matching based on user environment allowing a further reduction in conducted power.

Systems and techniques for reducing power consumption in a mobile computing device

A user device having a slot antenna formed in metallic material of a structural member is described.

Slot antenna within existing device component

Described herein are accessory devices that are configured to both perform accessory functions for electronic devices, as well as output content that is supplemental or complementary to content being output by the electronic devices. The accessory functionality of the accessory devices may be far-ranging and may include reading lights, covers, projectors, universal serial bus (USB) drives, cameras, page-turn buttons, audio jacks, expansion headers, Bluetooth devices, biometric sensors, ambient light sensors, and more. These accessory devices may complement the operation of any number of electronic devices. For instance, an accessory device may both comprise a reading light to illuminate a display of an electronic book (eBook) reader device, as well as a display to display content that has been deemed supplemental to the content being displayed by the eBook reader device.

Accessory devices configured to display supplemental content

A multi-tiered cache manager and methods for managing multi-tiered cache are described. Multi-tiered cache manager causes cached data to be initially stored in the RAM elements and selects portions of the cached data stored in the RAM elements to be moved to the flash elements. Each flash element is organized as a plurality of write blocks having a block size and wherein a predefined maximum number of writes is permitted to each write block. The portions of the cached data may be selected based on a maximum write rate calculated from the maximum number of writes allowed for the flash device and a specified lifetime of the cache system.

Growing community of inventors

Cupertino, CA, United States of America

James Samuel Bowen