Interface de commande accessoire

Accessory control interface

Abstract

L'invention concerne une interface (10, 40) venant entre un dispositif maître (30) et un dispositif esclave (20). L'interface comporte une ligne de signal bidirectionnelle (10A) bit-série permettant de transporter des commandes et des données associées provenant du dispositif maître vers le dispositif esclave et de transporter un signal de remise à zéro, un signal d'interruption et un signal de séquence d'apprentissage afin de spécifier une durée binaire pour des données transférées du dispositif esclave vers le dispositif maître. La ligne de signal bidirectionnelle bit/série indique en outre l'état connecté/déconnecté d'un dispositif accessoire au dispositif maître.
Disclosed is an interface (10, 40) between a master device (30) and a slave device (20). The interface includes a bit serial bidirectional signal line (10A) for conveying commands and associated data from the master device to the slave device, and for conveying a reset signal, an interrupt signal, and a learning sequence signal for specifying a duration of a bit time for data transferred from the slave device to the master device. The bit serial bidirectional signal line further indicates an accessory device connected/disconnected state to the master device.

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NO-Patent Citations (1)

    Title
    See also references of EP 1483871A2

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    US-7751856-B2July 06, 2010Nokia CorporationCoordination of apparatus and mobile terminal media processing circuitry
    US-7949802-B2May 24, 2011Nokia CorporationEnhanced communication via a serial interface
    US-8648501-B2February 11, 2014Apple Inc.Systems and methods for providing protection circuitry to selectively handle multiple cable-types through the same port
    WO-2005041548-A1May 06, 2005Nokia CorporationBloc audio
    WO-2008068311-A2June 12, 2008Nokia CorporationCommunication améliorée par le biais d'une interface série