Apple Inc.

Paul Holden

Lawrence G Bolton

Emily Clark Schubert

John Benjamin Filson

David Tupman

Donald Joseph Novotney

John Wesley Archibald

Scott Peter Krueger

Gregory Thomas Lydon

Wang Chun Leung

Nitin Ganatra

Mitchell David Adler

Shyam S Toprani

Jesse Lee Dorogusker

Greg Marriott

Christopher Brian Fleizach

Eric Taylor Seymour

John Meron Ananny

Barry Twycross

Daniel R Fletcher

Peter T Langenfeld

Muthya K Girish

Sylvain René Louboutin

A portable media device (PMD) can produce an isochronous audio/video experience when the PMD provides a digital audio signal to the accessory while displaying analog video on an accessory-independent display. The accessory can communicate audio latency information to the PMD. The PMD can delay a video portion of a presentation, relative to providing the digital audio signal to the accessory, based on the audio latency information communicated by the accessory. As a result, the user may perceive an isochronous presentation of the audio and video portions of the presentation.

Synchronizing digital audio and analog video from a portable media device

Embodiments of the present invention provide various communication techniques for communication between a mobile computing device and an accessory. An accessory protocol that is generic to the mobile computing device can be used for some communication. An application executing at the mobile computing device can communicate with the accessory using an application communication protocol. In some embodiments, the application communication protocol can be different from the accessory communication protocol. In other embodiments the application protocol may only be recognized by the application and the accessory. In some embodiments, messages conforming to an application protocol can be communicated between the application and the accessory by packaging the messages inside a message conforming to the accessory communication protocol.

Accessory and mobile computing device communication using an application communication protocol

Communication between a mobile computing device and an accessory using an accessory protocol and an application protocol

Techniques for controlling a touch input device using an accessory communicatively coupled to the device are disclosed. In one aspect, an accessibility framework is launched on the device. An accessory coupled to the device is detected. Receipt of input from the accessory is enabled. An accessibility packet is received from the accessory. The accessibility packet includes an accessibility command and one or more parameters. The accessibility packet is processed to extract the first accessibility command and the one or more parameters. Input is generated for the accessibility framework based on the accessibility command and the one or more parameters. In some implementations, the device also sends accessibility commands to the accessory, either in response to accessibility commands received from the accessory or independent of any received accessibility commands.

Accessory protocol for touch screen device accessibility

Automatic identification of compatible applications and accessories

Connection to multiple accessories with multiple accessory-specific protocols

Accessory attachment protocol and responsive actions

Application communication with external accessories

An interface and protocol allow a media player to communicate with external accessories over a transport link. The protocol includes a core protocol functionality and a number of accessory lingoes. Examples of accessory lingoes include a microphone lingo, a simple remote lingo, a display remote lingo, an RF transmitter lingo, and an extended interface lingo.

Communication between an accessory and a media player with multiple protocol versions and extended interface lingo

A method and system for allowing a media player to determine if it supports the capabilities of an accessory are disclosed. The method and system comprise requesting information about the capabilities of the accessory by the media player and providing information about the capabilities of the accessory by the accessory to the media player. The method and system further include utilizing the information to determine if the capabilities of the accessory are supported by the media player. Accordingly, a method and system in accordance with the present invention provides a system that allows a media player to obtain information from an accessory about the accessory's capability. A media player can then utilize this information to allow for the maximum functionality of the accessory when connected to the media player.

Method and system for allowing a media player to determine if it supports the capabilities of an accessory

Techniques for facilitating communication between an accessory and a mobile computing device using application specific protocols

Communication between an accessory and a media player using an extended interface lingo

Communication between a media player and an accessory with an extended interface mode

Growing community of inventors

Sunnyvale, CA, United States of America

Paul Holden