Bluegiga IWIP3G - IWRAP - IPHONE 3G, Руководство пользователя

Страница: 173 / 211

173
Source: Bluetooth SIG, URL:
http://www.bluetooth.com/Bluetooth/Technology/Works/A2DP.htm
9.8.8 Audio Video Remote Control Profile
AVRCP is designed to provide a standard interface to control TVs, hi-fi equipment, or
others to allow a single remote control (or other device) to control all the A/V equipment
to which a user has access. It may be used in concert with A2DP or VDP.
The AVRCP defines two roles, that of a controller and target device.
 Controller – The controller is typically considered the remote control device.
 Target – The target device is the one whose characteristics are being altered.
This protocol specifies the scope of the AV/C Digital Interface Command Set (AV/C
command set, defined by the 1394 trade association) to be applied, realizing simple
implementation and easy operability. This protocol 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).
In AVRCP, the controller translates the detected user action to the A/V control signal, and
then transmits it to a remote Bluetooth enabled device. The functions available for a
conventional infrared remote controller can be realized in this protocol. The remote control
described in this protocol is designed specifically for A/V control only.
Source: Bluetooth SIG, URL:
http://www.bluetooth.com/Bluetooth/Technology/Works/AVRCP.htm
9.8.9 Human Interface Device Profile
The HID profile defines the protocols, procedures and features to be used by Bluetooth
HID such as keyboards, pointing devices, gaming devices and remote monitoring devices.
The HID defines two roles, that of a Human Interface Device (HID) and a Host:
 Human Interface Device (HID) – The device providing the service of human data
input and output to and from the host.
 Host – The device using or requesting the services of a Human Interface Device.
The HID profile uses the universal serial bus (USB) definition of a HID device in order to
leverage the existing class drivers for USB HID devices. The HID profile describes how to
use the USB HID protocol to discover a HID class device’s feature set and how a Bluetooth
enabled device can support HID services using the L2CAP layer. The HID profile is
designed to enable initialization and control self-describing devices as well as provide a low
latency link with low power requirements.
The Bluetooth HID profile is built upon the Generic Access Profile (GAP), specified in the
Bluetooth Profiles Document; see Referenced Documents. In order to provide the simplest
possible implementation, the HID protocol runs natively on L2CAP and does not reuse
Bluetooth protocols other than the Service Discovery Protocol.
Source: Bluetooth SIG, URL:
http://www.bluetooth.com/Bluetooth/Technology/Works/HID.htm