摘要:
A portable computing device (PCD) can selectively supply power to an accessory during PCD hibernation. In some embodiments, the PCD's default behavior is to disable accessory power output during hibernation, and this default behavior can be overridden in response to a request from a connected accessory. The accessory can use the power supplied during PCD hibernation to detect user input (or other) events and wake the PCD from hibernation in response to a detected event. Some accessories can wake the PCD by emulating accessory detachment and reattachment.
摘要:
A portable computing device (PCD) can selectively supply power to an accessory during PCD hibernation. In some embodiments, the PCD's default behavior is to disable accessory power output during hibernation, and this default behavior can be overridden in response to a request from a connected accessory. The accessory can use the power supplied during PCD hibernation to detect user input (or other) events and wake the PCD from hibernation in response to a detected event. Some accessories can wake the PCD by emulating accessory detachment and reattachment.
摘要:
An accessory for use with a portable computing device is provided. The accessory includes a keypad and a pedestal to house the control circuitry and provide mechanical stability for the accessory. The accessory includes a metal mass that performs dual functions of providing the mass for stability as well as acting as a ground connection for the keypad and other control circuitry. The accessory includes a connector for interfacing with a portable computing device and an additional connector for interfacing with an additional accessory.
摘要:
An accessory for use with a portable computing device is provided. The accessory includes a keypad and a pedestal to house the control circuitry and provide mechanical stability for the accessory. The accessory includes a metal mass that performs dual functions of providing the mass for stability as well as acting as a ground connection for the keypad and other control circuitry. The accessory includes a connector for interfacing with a portable computing device and an additional connector for interfacing with an additional accessory.
摘要:
Systems and methods are provided that enable identification of an accessory device or other peripheral device via a serial communication link. An electronic device (e.g., a media player or portable media device) may identify an accessory device using a serial communication link when the accessory device is attached or coupled to the electronic device. Based on serial communications, for example, the electronic device may discover and identify an accessory device to determine whether one or more preferences or functionalities should be set or enabled. The electronic device may also discover whether an accessory device or its manufacturer, distributor, or retailer is authorized or licensed to enable certain functionalities or set certain preferences when connect to the electronic device. Therefore, aspects of a serial communication link that may already exist in many electronic devices for data communication usage may be repurposed to provide identification or authorization of accessories or other peripheral devices.
摘要:
Printed circuit boards are provided with embedded components. The embedded components may be mounted within recesses in the surface of a printed circuit board substrate. The printed circuit board substrate may have grooves and buried channels in which wires may be mounted. Recesses may be provided with solder pads to which the wires may be soldered or attached with conductive adhesive. An integrated switch may be provided in an opening within a printed circuit board substrate. The integrated switch may have a dome switch member that is mounted within the opening. A cover member for the switch may be formed from a flexible layer that covers the dome switch member. Terminals for the integrated switch may be formed from conductive structures in an interior printed circuit board layer. Interconnects may be used to electrically connect embedded components such as switches, integrated circuits, solder pads for wires, and other devices.
摘要:
Microphone assemblies may be provided that have microelectromechanical systems microphones and associated application-specific integrated circuits mounted to printed circuit boards. The application-specific integrated circuits may contain amplifier circuitry for amplifying microphone signals from the microphone. One or more though-silicon vias may be formed in the application-specific integrated circuit that serve as an acoustic port through which sound may pass. The application-specific integrated circuit may be embedded in the printed circuit board and the microphone may be mounted to the upper surface of the printed circuit board, the application-specific integrated circuit and microphone may be stacked on the upper surface of the printed circuit board, or the microphone and application-specific integrated circuit may be mounted to the printed circuit board so that the microphone is received within an opening in the printed circuit board.
摘要:
Systems and methods for configuring contacts of a first connector includes detecting mating of a second connector with the first connector and in response to the detection, sending a command over one of the contacts and waiting for a response to the command. If a valid response to the command is received, the system determines the orientation of the second connector. The response also includes configuration information for contacts in the second connector. The system then configures some of the other contacts of the first connector based on the determined orientation and configuration information of the contacts of the second connector.
摘要:
Electronic devices may provide microphone bias voltages to accessories. The accessories may include circuitry powered from the microphone bias voltages. The output impedances and the voltages of the microphone bias voltages may be adjusted during operation of the electronic devices. An electronic device may provide a bias voltage to an accessory, may lower the output impedance of the bias voltage, and may increase the voltage of the bias voltage during operation of the electronic device. Accessories that received bias voltages with lowered impedances or raised voltage levels may exhibit greater tolerance to faults such as moisture-based shorts and may be able to continue operating even in the presence of some faults.