Abstract: Current approaches to paperless books use single screen laptop computers or electronic paper display (EPD)-based book readers. Laptop computers consume too much power and cannot be used for extended periods of time, such as an entire school day, without recharging its battery. EPD devices are limited in functionality due to their slow refresh rate and grey-scale only images. An embodiment of the present invention integrates bi-stable display technology and refresh display technology into a single device and manages the use of these technologies to achieve power savings while providing a rich set of display functionalities to support user interaction with content in a synergistic manner. The power savings functionality enables the device to have a battery operating life between charges of many hours of operation, such as eight hours or more, while the display functionality enables users to access, display, and interact with content in ways users have become accustomed and in ways not before possible.

Abstract: Bi-stable display technology and refresh display technology are integrated into a single device, which manages the use of these technologies to achieve power savings while providing a rich set of display functionalities that support interaction with content in a synergistic manner. Power saving functionality facilitates conservation of battery operating life, and flexible display functionalities enable access, display, and interaction with content in various ways.

Abstract: Current approaches to paperless books use single screen laptop computers or electronic paper display (EPD)-based book readers. Laptop computers consume too much power and cannot be used for extended periods of time, such as an entire school day, without recharging its battery. EPD devices are limited in functionality due to their slow refresh rate and grey-scale only images. An embodiment of the present invention integrates bi-stable display technology and refresh display technology into a single device and manages the use of these technologies to achieve power savings while providing a rich set of display functionalities to support user interaction with content in a synergistic manner. The power savings functionality enables the device to have a battery operating life between charges of many hours of operation, such as eight hours or more, while the display functionality enables users to access, display, and interact with content in ways users have become accustomed and in ways not before possible.

Abstract: An apparatus for providing automatic alignment of a circuit board within a chassis includes a housing member having an end wall portion. The end wall portion includes a plurality of openings formed therein for receiving a plurality of connectors. The end wall portion further includes a first raised portion and a second raised portion to provide automatic alignment of the circuit board within the chassis.

Abstract: System for providing self-selection arbitration among a plurality of slave processors connected to a VME back plane. The slave processors are connected to a common ID bus, interrupt line, and acknowledge bus. Slave processors contend for access to the VME back plane by asserting an interrupt level unique to a group of slave processors on the interrupt line. Simultaneously, the contending slave processors apply their respective addresses to the ID bus. When a contending slave processor receives an acknowledge over the acknowledge bus from a master processor, and senses its own address on the ID bus, it has successfully won the right to transmit data over the data bus.