WO2007012257A1

WO2007012257A1 - Method and apparatus for wirelessly remote controlling the streaming media player in host system and the corresponding system

Info

Publication number: WO2007012257A1
Application number: PCT/CN2006/001653
Authority: WO
Inventors: Dongmei Lu; Haifeng Yang; Zhaoming Wu; Dan Tian
Original assignee: Ivt (Beijing) Software Technology Inc.
Priority date: 2005-07-12
Filing date: 2006-07-12
Publication date: 2007-02-01
Also published as: CN100403349C; CN1897056A

Abstract

A method and system for remote controlling the mode of streaming media player in host system by using the wireless streaming media play control device and the wireless streaming media play control module connected to the host system are disclosed. The wireless streaming media play control module is connected to the host system and is automatic identified by the host system as streaming media device and human-machine interactive device. The wireless streaming media play control module receives the control command from the wireless streaming media play control device through the wireless communication link , and then converts the control command into multimedia control input signal of standard human-machine interactive device, so as to control the play of the streaming media player in the host system.

Description

Method, device and related system for wireless remote control host system streaming media player

The present invention relates to wireless communication and streaming media remote playback control, in particular to a method for remotely controlling a streaming media player in a host system using a wireless streaming media playback control device and a wireless streaming media playback control module connected to the host system. Equipment and related systems. technical background

The advent of wireless technology has enabled users to listen to music and watch video images wirelessly. The implementation method is that each of the streaming media system and the playback control device has a wireless transceiver, and the wireless streaming media playback control device sends the control command to the wireless transceiver of the streaming media system through the wireless connection, and the wireless transceiver reports the control command. In the host system, the host system controls its streaming media player; the host system sends the streaming media data to the wireless transceiver, and the wireless transceiver transmits the streaming media data to the streaming media playback control device via the wireless connection. Currently, there are two methods for remotely controlling a streaming media player running on a host system (such as a computer, PDA, mobile phone, etc.): One is to use a dedicated streaming media player, and the streaming media player receives wireless transceivers. The control command reported by the device controls the streaming media playback; the other is to write a dedicated control software to receive the control commands reported by the wireless transceiver, the software converts the control commands into standard control commands recognized by the streaming media player, and the control flow media Player. The disadvantage of both solutions is that dedicated streaming media players or dedicated control software must be used in the host system and cannot be plug and play.

The above wireless technology, for example, may be a Bluetooth short-range wireless communication technology, which operates in the 2.4 GHz Industrial Technology (ISM) band. In the Bluetooth Advanced Audio Distribution Profile (A2DP) developed by the Bluetooth Special Interest Group (SIG), the Bluetooth audio source (Source) and the Bluetooth audio receiver (Sink) are connected via a Bluetooth link. For wireless transmission of advanced audio data, Source is responsible for intercepting streaming media data and compressing it into a specific format for transmission to Sink. Users can listen to streaming media data from the Source side on the Sink side. The Bluetooth audio/video remote control application (AVRCP) also defines two roles: AVRCP controller (Controller, referred to as CT) and AVRCP target (Target, TG for short). After establishing a Bluetooth link between them, The CT can send a control command to the TG to remotely control the TG. Currently, Bluetooth wireless stereo headphones or speakers usually implement A2DP Sink and AVRCP CT; the system side, such as a computer, connects to a wireless adapter with Bluetooth A2DP Source and Bluetooth AVRCP TG function via a universal serial bus (USB) interface. It is possible to transmit control commands through AVRCP while streaming media data. However, the existing Bluetooth wireless USB adapter cannot directly control the system's conventional streaming media player after receiving the control command, and usually needs upper layer control software to assist in controlling the streaming media player, or using a dedicated streaming media player. The execution control commands are directly interpreted by the dedicated streaming media player. In this way, while using the Bluetooth wireless USB adapter, it is also necessary to install and start the corresponding control or streaming software, which brings inconvenience to the user. Moreover, the control or streaming software is associated with the operating system platform. If the operating system is different, the user needs to install different specialized control and streaming software suitable for the system. Such a scheme is not compatible and easy to use. Summary of the invention

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method of remotely controlling the operation of a streaming media player in a host system using a wireless streaming media playback control device and a wireless streaming media playback control module coupled to the host system.

According to the present invention, the wireless streaming media playback control module, when connected to the host system, behaves as a standard streaming media device and a standard human-machine interaction device supported by the host system that conform to certain standard specifications. In operation, the wireless streaming media playback control module establishes a short-range wireless communication link with the wireless streaming media playback control device; the wireless streaming media playback control device transmits a control for playing the streaming media player through the wireless communication link. Controlling the command to the wireless streaming media playback control module, the wireless streaming media playback control module transmitting the multimedia control input signal to the host system after converting the control command to the multimedia control input signal of the human-machine interaction device corresponding to the host system, The host system transmits the input signals to a streaming media player that supports the multimedia control input signals of the human-machine interactive device, and the multimedia media control input signals are interpreted by the streaming media player and the corresponding control operations are performed. On the other hand, the host system also sends the streaming media data played by the streaming media player to the streaming media device corresponding to the wireless streaming media playback control module, and the wireless streaming media playback control module passes the short distance after receiving the streaming media data. Wireless communication connection link, send it to the wireless streaming media playback control device, or other connection to the wireless streaming media playback control module Wireless streaming device.

In a particularly preferred embodiment, Bluetooth wireless communication technology is employed to perform streaming control commands and wireless data transmission and reception, the host system is a computer system, and Bluetooth wireless

The USB Streaming Playback Control Adapter is equivalent to a wireless streaming playback control module that is connected to the computer system via a bus such as USB. The streaming media player is any streaming media player on the computer system that supports streaming control commands for standard USB human-machine interaction devices. The Bluetooth wireless stereo headset is equivalent to a wireless streaming playback control device. The Bluetooth Wireless USB Streaming Playback Control Adapter works in conjunction with the Bluetooth Wireless Stereo Headset to remotely control the computer system streaming media player. Since most streaming media players and computer systems currently support the multimedia control command keys of standard USB human-computer interaction devices, simply convert the Bluetooth control commands into multimedia control commands of the standard USB human-machine interaction device, and the streaming media player can be used. Seamlessly connect and complete playback controls. The advantages of this solution are that the single, standard and compatibility are strong.

Bluetooth wireless USB streaming playback control adapter, built-in Bluetooth A2DP Source, AVRCP TG; Bluetooth wireless stereo headset, built-in Bluetooth A2DP Sink, AVRCP CT application. After the Bluetooth wireless USB streaming playback control adapter is connected to the computer system, the USB bus of the computer system enumerates the Bluetooth wireless USB streaming media playback control adapter to the computer system according to the USB bus standard. Bluetooth Wireless USB Streaming The playback control adapter acts as a standard USB streaming device (also commonly referred to as a USB sound card) and USB human-machine interaction device for computer systems. Bluetooth wireless USB streaming media playback control adapter and Bluetooth wireless stereo headset establish Bluetooth wireless link for streaming media data playback, Bluetooth wireless stereo headset can send control commands to Bluetooth wireless USB streaming media playback control adapter through AVRCP, Bluetooth wireless USB streaming media playback The control adapter converts the AVRCP control command transmitted by the Bluetooth wireless headset into a multimedia control input signal of a standard USB human-machine interaction device recognized by the computer system (usually corresponding to some media playback control button ASCII code keys recognized by the computer system by default) Values, such as previous, next, pause, play, stop, etc., are transmitted to the computer system via a standard USB bus, and the computer system sends these input signals to the streaming media of the multimedia control input signals supporting the human-machine interactive device. The player, the streaming media player interprets the multimedia control input signal and performs corresponding control operations.

According to still another aspect of the present invention, a wireless streaming media playback control module for a streaming media player in a remote control host system is provided, including: a bus interface module, configured to connect to the host system through a standard bus interface; a wireless communication module, configured to connect to a wireless streaming media playback control device via a wireless communication link to stream data from the host system Transferred to the wireless streaming media playback control device;

a control module, via the wireless communication module, receives a control command from the wireless streaming media playback control device for controlling playback of a streaming media player in the host system, and converts the multimedia to a standard human-machine interaction device Controlling the input signal and transmitting the multimedia control input signal to the host system via the bus interface module.

The wireless streaming media playback control module is preferably a Bluetooth wireless USB streaming media playback control adapter. After being connected to the Bluetooth wireless stereo headset, the user can remotely control the computer system streaming media player by operating a button on the Bluetooth wireless stereo headset. The user button information is transmitted to the Bluetooth wireless USB streaming media playback control adapter through the AVRCP control command or other custom control commands, and the Bluetooth wireless USB streaming media playback control adapter converts the control signal into a standard USB human-computer interaction command to the computer after receiving the control command. The system, the computer system notifies/controls the streaming media player to perform corresponding playback control operations, the steps of which are:

(a) Bluetooth wireless USB streaming media playback control adapter A and Bluetooth wireless stereo headset B establish a Bluetooth connection, including A2DP and AVRCP connections;

(b) The user presses the corresponding button on the Bluetooth wireless stereo headset, for example: previous, next, pause, play, stop, etc., device B transmits the button information to device A through AVRCP;

(c) After receiving the AVRCP control command or other custom control commands sent by device B, device A converts it into a multimedia control input signal of the standard USB human-machine interaction device recognized by the computer system, for example: Previous, Next First, pause, play, stop, etc.

(d) Device A transmits the multimedia control input signal of the standard USB human-machine interaction device to the computer system via the USB bus via the USB bus, and the computer system notifies the streaming media player;

(e) The streaming media player interprets the multimedia control input signal and performs the corresponding control operations.

Among them, AVRCP control commands or other custom control commands can also be transmitted through other Bluetooth connections (such as Serial Port Profile, SPP for short). According to another aspect of the present invention, a wireless streaming media playback control system is provided, including:

a host system with a streaming media player;

One or more wireless streaming media playback control devices for receiving streaming media data from the host system and transmitting control commands for controlling playback of the streaming media player;

A wireless streaming playback control module, the wireless streaming playback control module includes:

a bus interface module, configured to connect to the host system through a standard bus interface; a wireless communication module, configured to connect to the one or more wireless streaming media playback control devices via a wireless communication link to be from the host system Streaming data to the wireless streaming playback control device;

a control module that receives a control command from the wireless streaming media playback control device from the wireless communication module and converts it into a multimedia control input signal of a standard human-machine interaction device, and inputs the multimedia control input signal through the bus interface module Transfer to the host system;

The host system is configured to transmit the multimedia control input signal to a streaming media player that is to be controlled to support the multimedia control input signal to interpret the multimedia control input signal by the streaming media player and perform corresponding control operations .

With the method and apparatus of the present invention, the user can use the wireless streaming media playback control function plug-and-play without any modification to the host system of the streaming media player, thereby providing improved user friendliness. DRAWINGS

The objects and advantages of the invention will be apparent from the description of the preferred embodiments of the invention. among them:

1 is a system block diagram for implementing wireless control of a host system streaming media player; FIG. 2 is a block diagram of a specific embodiment of a wireless remote control computer system streaming media player using a Bluetooth wireless connection;

Figure 3 is a hardware block diagram of the Bluetooth wireless USB streaming media playback control adapter; Figure 4 is a software architecture diagram of the Bluetooth wireless USB streaming media playback control adapter; Figure 5 is a Bluetooth wireless USB streaming media playback control adapter and Bluetooth wireless stereo A step diagram of the headset connection completing control of the computer system streaming media player. detailed description

1 is a system block diagram of a wireless remote control for a host system streaming media player. As shown in FIG. 1, the wireless streaming playback control module 140 is coupled to the host system 100 via a standard bus interface 130. The host system 100 automatically identifies the wireless streaming play control module 140, and the wireless streaming play control module 140 acts as a streaming device 120 and a human-machine interaction device 110 for the host system 100. A short-range wireless communication link 180 is established between the wireless streaming media playback control module 140 and the wireless streaming media playback control device 150 or a plurality of wireless streaming media playback devices 160, 170. The wireless streaming media playback control device 150 sends a control command to the wireless streaming media playback control module 140 via the wireless communication link 180, and the wireless streaming media playback control module 140 converts the control command into the input of the corresponding human-machine interaction device 110 of the host system. Signal S120, the host system 100 notifies the streaming media player S130 of the input signal S120, the streaming media player 190 interprets the input signals, and performs corresponding control operations; the host system 100 streams the streaming media data S110 played by the streaming media player 190. The radio streaming media playback control module 140 receives the streaming media data S110 and transmits the streaming media data S110 from the wireless streaming media playback control module 140 through the short-range wireless communication link 180. It is sent to the wireless streaming media playback control device 150, or other wireless streaming media playback device 160, 170 that is coupled to the wireless streaming media playback control module 140.

2 is a block diagram of a specific embodiment of a wireless remote control computer system streaming media player using a Bluetooth wireless connection.

As shown in FIG. 2, the Bluetooth wireless USB streaming media playback control adapter 240 is coupled to a computer system (eg, a computer system running Windows operating system 200) via a USB bus interface 230. The Windows operating system 200 automatically recognizes the Bluetooth wireless USB streaming media playback control adapter 240, which acts as a USB streaming device 220 and a USB human-machine interaction device 210 for the Windows operating system 200. Bluetooth wireless USB streaming control adapter 240 and a Bluetooth wireless stereo headphones 250 or more Bluetooth wireless stereo headphones ^260, 280 establish a Bluetooth wireless communication link 270 between. The Bluetooth wireless stereo headset 250 sends a control command to the Bluetooth wireless USB streaming media playback control adapter 240 via the Bluetooth wireless communication link 280, and the Bluetooth wireless USB streaming media playback control adapter 240 converts the control commands to Windows. The input signal S220 of the USB human-machine interaction device 220 of the operating system 200, the Windows operating system 200 notifies the streaming media player (for example, Windows Media Player 290) of these input signals S220 to perform the playback control operation; the Windows operating system 200 will be Windows. The streaming media data S210 played by the Media Player 290 is sent to the USB streaming device 220 corresponding to the Bluetooth wireless USB streaming media playback control adapter 240, and the Bluetooth wireless USB streaming media playback control adapter 240 receives the streaming media data S110 and wirelessly through the Bluetooth. Communication link 280 is sent from Bluetooth wireless USB streaming media playback control adapter 240 to Bluetooth wireless stereo headsets 250, 260, 270.

Figure 3 is a hardware block diagram of the Bluetooth wireless USB streaming media playback control adapter. As shown in FIG. 3, the adapter is composed of a USB interface module 300, a control module 360, a baseband control chip 330, a radio frequency chip 340, a peripheral circuit 320, and an antenna 350.

The control module 360 is coupled to the USB interface module 300 and the baseband control chip 330, or integrated in the baseband control chip 330. The control module 360 includes a command conversion mapping table. According to the command conversion mapping table, the control module 360 converts the AVRCP control command of the Bluetooth wireless stereo headset received through the radio frequency chip 340 and transmitted via the baseband control chip 330 into standard USB human-computer interaction. The multimedia control input signal of the device is sent from the USB interface module 300 to the streaming media player of the computer system to control the playback of the streaming media player -

The USB interface module 300 is also coupled to a corresponding computer system USB interface and baseband control chip 330. The USB interface module 300 receives the multimedia control input signal of the standard USB human-machine interaction device sent by the control module 360, and sends the multimedia control input signal of the standard USB human-machine interaction device to the streaming media player of the computer system through the USB interface of the computer system; At the same time, the USB interface module 300 receives the streaming media data of the computer system streaming media player, sends the streaming media data to the baseband control chip 330, and transmits the data to the Bluetooth wireless stereo headset via the radio frequency chip 340.

The baseband control chip 330 is also coupled to the RF chip 340, embedding the microprocessor, RAM, ROM, and baseband controller. The entire Bluetooth protocol stack and application framework programs, including the A2DP/AVRCP related protocol 310, operate in the baseband control chip 330.

The radio frequency chip 340 is used to wirelessly transmit and receive information in accordance with standard specifications, and is connected to the baseband control chip 330 and the antenna 350.

The peripheral circuit 320 is some analog circuit necessary for the operation of the RF chip 340, and is connected to the RF chip 340. The antenna 350 is for receiving and transmitting wireless signals and is connected to the radio frequency chip 340.

Figure 4 is a software architecture diagram of the Bluetooth wireless USB streaming media playback control adapter. Bluetooth Wireless USB Streaming Playback Control Adapter 400 consists of several functional modules.

The USB device end module 455 provides a standard USB identifier, so that the Bluetooth wireless USB streaming media playback control adapter acts as a USB streaming device and a USB human-machine interaction device to the computer system; the control module 425 converts the AVRCP control command into a command mapping table to The multimedia control input signal of the standard USB human-machine interaction device controls the playback of the streaming media player of the computer system; the A2DP410 provides the function of wireless audio transmission, and the audio data transmission required by the audio/video distributed transmission protocol (Audio/Video) Distribution Transport Protocol, called AVDTP) 430; AVRCP415 provides remote control function, the required control command transmission is provided by Audio/Video Control Transport Protocol (AVCTP) 435; SPP420 provides serial port function. The required data transmission is provided by the Radio Frequency Communications (RFCOMM) 445.

Service Discovery Protocol (SDP) 440 provides the functions of registration service and lookup service; Logical Link Control and Adaptation Protocol (L2CAP) 450 multiplexes various protocols of the upper layer. The Host Controller Interface (HCI) driver 460 allows the transmission of standard HCI commands and receives the resulting response; and receives and transmits data through the L2CAP 430.

The HCI transport layer 465 is optional. When the upper functional module and the lower functional module of the HCI transport layer are run on different processor platforms, the HCI transport layer is responsible for information transfer between the modules, and the physical transmission mode may be USB. UART, SD or PCMCIA, etc.; When the above two types of modules are running on the same processor platform, the information transfer uses shared memory, parameter transfer, message, etc., and the transport layer is no longer needed.

The link manager 470 is responsible for receiving commands and data sent by the upper module and returning the result to the upper layer. The link manager 470 performs the corresponding functions through the baseband controller 480 and the wireless transceiver 490. Link Management Protocol 475 is used for mutual communication between different Bluetooth device link managers. The baseband controller 480 operates in accordance with the commands of the link manager 470. The wireless transceiver 490 wirelessly transmits and receives information in accordance with standard specifications.

Figure 5 is a Bluetooth wireless USB streaming media playback control adapter to convert the AVRCP control commands transmitted by the Bluetooth wireless stereo headset into a standard USB human-machine interaction device. The control commands are transmitted to the computer system through the USB channel, thereby completing the step diagram of controlling the streaming media player of the computer system.

Bluetooth wireless USB streaming media playback control adapter and Bluetooth wireless stereo headset to establish Bluetooth A2DP connection S510; Bluetooth wireless stereo headset and Bluetooth wireless USB streaming media playback control adapter to establish Bluetooth AVRCP connection S520. After the user presses the button U510 on the Bluetooth wireless stereo headset, the Bluetooth wireless stereo headset sends an AVRCP control command S530 to the Bluetooth wireless USB streaming media playback control adapter. The Bluetooth Wireless USB Streaming Playback Control Adapter converts the AVRCP control commands transmitted by the Bluetooth wireless headset into multimedia control input signals S540 of a standard USB human-machine interaction device recognized by the computer system and transmits them to the computer system via a standard USB bus. The input signal is sent to the streaming media player S550 supporting the multimedia control input signal of the human-machine interactive device, and the streaming media player interprets and executes the multimedia control input signal, thereby completing the control operation of the system streaming media player.

The present invention is not limited to Bluetooth and can be applied to various short-range wireless connections; streaming media can include applications such as audio and video; and the standard bus to which the streaming media playback control device and system are connected can be various applicable buses.

While the invention has been shown and described with respect to the preferred embodiments the embodiments of the embodiments of the invention Various changes.

Claims

Rights request

1 - A method of remotely controlling a streaming media player in a host system using a wireless streaming media playback control device and a wireless streaming playback control module coupled to the host system, including:

(a) connecting the wireless streaming media playback control module to the host system, the host system automatically identifying the wireless streaming media playback control module as a streaming media device and a human-machine interaction device;

(b) establishing a wireless communication link between the wireless streaming media playback control device and the wireless streaming media playback control module;

(c) the wireless streaming media playback control device transmits a control command for controlling playback of the streaming media player to the wireless streaming media playback control module via the wireless communication link, the wireless streaming media playback control module converting the control command to The multimedia control input signal of the standard human-machine interaction device transmits the multimedia control input signal to the host system, and the host system transmits the multimedia control input signal to the streaming media player that supports the multimedia control input signal to be controlled. The multimedia control input signal is interpreted by the streaming media player and a corresponding control operation is performed.

2. The method of claim 1 wherein the wireless streaming playback control module is coupled to the host system via a standard bus interface.

3. The method according to claim 1, wherein the host system automatically identifies the wireless streaming media playback control module as a streaming media device and a human-machine interaction device, including:

When the wireless streaming media playback control module is connected to the host system or the host system is initialized, the host system automatically enumerates the wireless streaming media playback control module by using a bus standard, and loads the driver corresponding to the wireless streaming media playback control module. So that the wireless streaming media playback control module represents the host system as a streaming device and a human-machine interaction device of the host system.

4. The method according to claim 1, wherein said wireless communication link is established in accordance with a standard short-range wireless communication protocol; said control command is a control command conforming to a standard short-range wireless communication protocol, or Custom communication signaling.

5. The method of claim 1 further comprising:

The multimedia control input signal is a multimedia control signal of a human-machine interaction device that complies with a certain bus standard or a control signal of a human-machine interaction device that is a custom extended.

The method according to claim 2, wherein the short-range wireless communication protocol is a Bluetooth communication protocol, and the control command is a control command according to a Bluetooth audio/video remote control application AVRCP, and the standard bus interface is a universal string. The line bus USB interface, the wireless streaming media playback control module is a Bluetooth wireless USB streaming media playback control adapter.

7. A wireless streaming media playback control module for remotely controlling a streaming media player in a host system, comprising:

a bus interface module, configured to connect to the host system through a standard bus interface; a wireless communication module, configured to connect to a wireless streaming media playback control device via a wireless communication link to stream data from the host system Transferred to the wireless streaming media playback control device;

8. The wireless streaming media playback control module according to claim 7, wherein the control module includes a command conversion mapping table, and the mapping table is converted according to the command, and the control commands of various formats are converted to follow standard human-computer interaction. The multimedia control input signal of the device; and the command conversion mapping table can be modified by the bus interface module.

9. The wireless streaming media playback control module according to claim 7, wherein the wireless communication module is connected to the wireless streaming media playback control device according to a Bluetooth communication protocol, and the control command is in accordance with Bluetooth audio/video remote control. Applying the control command of AVRCP, the standard bus interface is a universal serial bus USB interface.

10. A wireless streaming media playback control system, comprising:

a host system with a streaming media player;

A wireless streaming media playback control module, the wireless streaming media playback control module includes -.

a bus interface module, configured to connect to the host system through a standard bus interface; a wireless communication module, configured to connect to the one or more wireless streaming media playback control devices via a wireless communication link to be from the host system Streaming data to this Wireless streaming playback control device;