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一.概述

The Audio/Video Remote Control Profile (AVRCP) defines the features and procedures?
required in order to ensure interoperability between Bluetooth devices with audio/video?
control ?functions ?in ?the ?Audio/Video ?distribution ?scenarios. ?This ?profile ?specifies ?the?
scope of the AV/C Digital Interface Command Set (AV/C command set, defined by the?
1394 Trade Association) to be applied, and it realizes simple implementation and easy?
operability. This profile adopts the AV/C device model and command format for control?
messages, and those messages are transported by the Audio/Video Control Transport?
Protocol (AVCTP). ? ?Browsing functionality is provided over a second AVCTP channel,?
which does not use AV/C?

二.架構(gòu) and role

架構(gòu)


role:
The controller (CT) is a device that initiates a transaction by sending a command?
frame to a target. Examples for CT are a personal computer, a PDA, a mobile?
phone, a remote controller or an AV device (such as an in car system, headphone,?
player/recorder, timer, tuner, monitor etc.).
The target (TG) is a device that receives a command frame and accordingly
generates a response frame. Examples for TG are an audio player/recorder, a video?
player/recorder, a TV, a tuner, an amplifier or a headphone.?

三.AVRCP specific commands

四.AVRCP PDU format

There are two PDU formats used in AVRCP. On the Control channel all commands and?
responses are AV/C generic PDUs or AVRCP Specific AV/C PDUs as defined in
Section 6.3.1. On the Browsing channel all commands and responses are AVRCP?
Specific Browsing PDUs as defined in Section 6.3.2. The AVRCP specific commands?
are listed in Table 4.5: AVRCP Specific operations. This table specifies whether the?
command shall be sent on the Control or Browsing channel, and hence what format the?
commands shall take. Control commands shall only be sent on the Control Channel and?
Browsing commands shall only be sent on the Browsing channel.

1.AVRCP Specific AV/C PDUs

data format

例：

2.AVRCP Specific Browsing Commands

data format

例：
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