Apple Inc.

Andrew Gong

Duncan Robert Kerr

Brian Quentin Huppi

Michael F Culbert

Richard D Cappels

Christoph Horst Krah

David B Townsley

Eva Henin

Christopher H Krah

A control indication assembly. A first control mounted on a surface of a computer is coupled to a first sensor, to a first sensing circuit to send an electrical signal to the first control when a user-touch occurs to the first sensor, and to a first indicator to indicate an occurrence of said user-touch. A second control mounted on a surface of a display which is coupled to the computer is coupled to a second sensor, to a second sensing circuit to send an electrical signal to said second control when said user-touch occurs to the display, and to a second indicator to indicate an occurrence of the user-touch. The first and second control are configured such that the first and second indicator are synchronized to exhibit identical behaviors when the user-touch occurs to either the first control or the second control.

Methods and apparatuses using control indicators for data processing systems

Improved techniques for charging batteries within portable computing devices are disclosed. The improved techniques operate to charge a battery at dynamically determined power levels. The power levels for charging the battery are dynamically determined by monitoring the power consumption of the portable computing device. When subsystems of the portable computing device are determining to be consuming less power than has been allocated thereto, higher levels of power from a power source are made available for charging the battery. As a result, the battery is able to be charged at a rate that is significantly faster than previously performed. Also, by dynamically monitoring the power consumption of the portable computing device, the improved techniques also ensure that the portable computing device will not be starved for power during its operation even as its subsystem's switch between normal (active) modes and low power modes.

System for charging portable computer's battery using both the dynamically determined power available based on power consumed by sub-system devices and power limits from the battery

Improved techniques for charging batteries within portable computing devices are disclosed. The improved techniques operates to charge a battery at an approximately constant power level by adjusting a charge current as the battery voltage changes. As a result, the battery is able to be charged at a rate that is significantly faster than previously performed. Also, by monitoring the amount of power that is available for charging, the improved techniques ensure that the portable computing device is not starved for power during its operation.

Method and apparatus for rapidly charging a battery of a portable

A master agent and a slave agent are interconnected over a two-conductor bus system. One conductor is utilized to transfer data signals between the agents and the second conductor is utilized to transfer a clock signal between the agents. The master agent includes a single data port for both input and output. The slave agent includes two data ports: an input port and an output port. The input port and the output port are coupled to a single conductor, thereby allowing data to be input to and output from the slave agent on a single line. An open collector device is situated between the output port of the slave agent and the data conductor. Data is transferred between the master and slave agents by first synchronizing the agents. The agents are synchronized by first allowing the data conductor to obtain a high state. Upon sensing the data conductor high, the master agent drives the clock conductor to a low state. The slave agent responds by driving the data conductor low if the agent is ready for a transfer. The master agent then drives the clock conductor high in response to the slave agent driving the data conductor low. The slave agent then drives the data conductor high, and prepares for the data transfer.

Method and apparatus for providing a high throughput two-conductor

A power system fault handling mechanism for portable electronic devices having multiple power supplies. A safety-net circuit is triggered when a power fault condition is detected. The safety-net circuit is a diode-based bridging circuit which couples all available power supplies to the power load, yet avoids feeding power back from any of the supplies to one another. This ensures that the load continues to receive power after a fault condition occurs without interruption. A microcontroller may then implement routines to switch to a working power supply so that the device may resume normal operation. The power system fault detection mechanism thus allows for the switching between system power supplies without disrupting a running process.

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San Mateo, CA, United States of America

Andrew Gong