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A Bluetooth logo. In order to use technology, a device must be compatible with the subset of Bluetooth profiles (often called services) necessary to use the desired services.

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A Bluetooth profile is a specification regarding an aspect of Bluetooth-based wireless communication between devices. It resides on top of the Bluetooth Core Specification and (optionally) additional protocols. While the profile may use certain features of the core specification, specific versions of profiles are rarely tied to specific versions of the core specification. For example, there are Hands-Free Profile (HFP) 1.5 implementations using both Bluetooth 2.0 and Bluetooth 1.2 core specifications. The way a device uses Bluetooth technology depends on its profile capabilities. The profiles provide standards which manufacturers follow to allow devices to use Bluetooth in the intended manner.

For the stack according to Bluetooth 4.0 a special set of profiles applies. At a minimum, each profile specification contains information on the following topics: • Dependencies on other formats • Suggested user interface formats • Specific parts of the Bluetooth used by the profile.

To perform its task, each profile uses particular options and parameters at each layer of the stack. This may include an outline of the required service record, if appropriate. This article summarizes the current definitions of profiles defined and adopted by the and possible applications of each profile.

Contents • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Advanced Audio Distribution Profile (A2DP) [ ] This profile defines how multimedia audio can be streamed from one device to another over a Bluetooth connection (it is also called Bluetooth Audio Streaming). For example, music can be streamed from a mobile phone, to a wireless, hearing aid/ streamer, car audio, or from a laptop/desktop to a wireless headset; also, voice can be streamed from a microphone device to a recorder on a PC. The Audio/Video Remote Control Profile (AVRCP) is often used in conjunction with A2DP for remote control on devices such as headphones, car audio systems, or stand-alone speaker units. These systems often also implement or Hands-Free (HFP) profiles for telephone calls, which may be used separately. Each A2DP service, of possibly many, is designed to uni-directionally transfer an audio stream in up to 2 channel stereo, either to or from the Bluetooth host.

This profile relies on. It includes mandatory support for the low-complexity codec (not to be confused with Bluetooth's voice-signal codecs such as ), and supports optionally / ( and ), MPEG-2 Part 7/ ( and ), and, and is extensible to support manufacturer-defined, such as. Some Bluetooth stacks enforce the (DRM) scheme. In these cases, it is impossible to connect certain A2DP headphones for high quality audio. Attribute Profile (ATT) [ ] The ATT is a wire application protocol for the specification. It is closely related to Generic Attribute Profile (GATT). Bluetooth low energy (Bluetooth LE, BLE, marketed as Bluetooth Smart[1]) is a wireless personal area network technology designed and marketed by the Bluetooth Special Interest Group aimed at novel applications in the healthcare, fitness, beacons,[2] security, and home entertainment industries.[3] Compared to Classic Bluetooth, Bluetooth Smart is intended to provide considerably reduced power consumption and cost while maintaining a similar communication range.

Audio/Video Remote Control Profile (AVRCP) [ ] This profile is designed to provide a standard interface to control TVs, Hi-fi equipment, etc. To allow a single (or other device) to control all of the A/V equipment to which a user has access. It may be used in concert with A2DP or VDP. It is commonly used in car navigation systems to control streaming Bluetooth audio.

Reshebnik po teoreticheskoj mehanike o e kepe. It also has the possibility for vendor-dependent extensions. AVRCP has several versions with significantly increasing functionality: • 1.0 — Basic remote control commands (play/pause/stop, etc.) • 1.3 — all of 1.0 plus metadata and media-player state support • The status of the music source (playing, stopped, etc.) • Metadata information on the track itself (artist, track name, etc.). Main article: Mesh Profile Specification allows for many-to-many communication over Bluetooth radio. It supports data encryption, message authentication and is meant for building efficient smart lighting systems and IoT networks.