Method and system to control playback of digital media

• US 8,234,672 B2
• Filed: 09/02/2003
• Issued: 07/31/2012
• Est. Priority Date: 09/02/2003
• Status: Active Grant

• Current Assignee: Creative Technology Ltd.
• Original Assignee: Creative Technology Ltd.
• Inventors: Morse, Lee, Tong, Vincent, Wei, Chan Tur
• Primary Examiner(s): Shepard, Justin
• Application Number:
  US10/654,338
• Publication Number:
  US 20050076388A1
• Time in Patent Office: 3,255 Days
• Field of Search: 725/141, 725/109
• US Class Current: 725/49
• CPC Class Codes: G08C 17/02 using a radio link
• CPC Class Codes: G08C 2201/50 Receiving or transmitting feedback, e.g. replies, status updates, acknowledgements, from the controlled devices
• CPC Class Codes: G08C 23/04 using light waves, e.g. infrared
• CPC Class Codes: G09G 2360/121 using a cache memory
• CPC Class Codes: G09G 2370/04 Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• CPC Class Codes: G09G 5/225 comprising a loadable character generator character generators per se G09G5/24
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/56 Provisioning of proxy services store-and-forward switching systems in data switching networks H04L12/54
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 21/41265 having a remote control device for bidirectional communication between the remote control device and client device unidirectional remote control device H04N21/42204
• CPC Class Codes: H04N 21/4147 PVR [Personal Video Recorder] H04N5/76 takes precedence ; arrangements for broadcast with accumulation-type receivers H04H20/40
• CPC Class Codes: H04N 21/43615 Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals home Audio Video Interoperability [HAVI] data switching networks H04L12/2805
• CPC Class Codes: H04N 21/482 End-user interface for program selection broadcast systems using EPGs H04H60/72
• CPC Class Codes: H04N 21/485 End-user interface for client configuration
• CPC Class Codes: H04N 5/775 : between a recording apparatus and a television receiver

Abstract

A method and system is provided to control playback of digital media on a playback device. The system may include a playback unit including at least one digital media storage communication interface to communicate with a media storage device, and a bi-directional remote control communication interface. Further, the system may include a separate remote control device to control the playback of the digital media on the playback device. The remote control device may include a complemental remote control communication interface for bi-directional communication with the remote control communication interface of the playback unit. The remote control device may also include a display screen, wherein the remote control device receives data from the playback unit for display on the display screen. The invention extends to a playback unit and to a remote control device.

Claims

1. A system to control playback of digital media on a separate playback device via a wireless local area network, the system including:

a playback unit connectable between the separate playback device and the wireless local area network to render the digital media to a user, the playback unit including;

a wireless network interface to communicate via the wireless local area network with a plurality of separate computers and to request and receive the digital media for playback from any of the separate computers, each separate computer including at least one media storage device

a playback device interface to connect the playback unit to the separate playback device, the connection between the playback unit and the playback device being independent of the wireless local area network;

a bi-directional remote control communication interface in addition to the wireless network interface; and

a first processor configured to;

combine separate content data received from each of the plurality of separate computers to provide the combined content data to a separate remote control device, the combined content data identifying the digital media available on an associated separate computer for playback via the playback unit; and

determine whether a display screen of the remote control device needs to be updated based on the combined content data; and

the separate remote control device to control the playback of the digital media on the separate playback device via the playback unit, the remote control device including;

a complemental remote control communication interface for bi-directional communication with the remote control communication interface of the playback unit;

the display screen, wherein the remote control device receives combined content data from the playback unit for display on the display screen; and

a second processor for determining whether the display screen needs to be updated based on the received combined content data.

2. The system of claim 1, wherein at least one of the separate computers is a personal computer that includes server software that manages media content on the personal computer.

3. The system of claim 1, wherein the playback unit requests the separate content data from the plurality of separate computers and communicates the content data to the remote control device for display on the display screen to allow a user to select digital media independently of any display provided on the playback device.

4. The system of claim 3, wherein the remote control device includes a user interface that allows a user to select digital media for playback on the playback device, the selected digital media being selected by the user from the combined content data and the playback unit being configured to communicate with the separate computer associated with the selected digital media the user interface operating in conjunction with the display screen to select the digital media.

5. The system of claim 4, wherein the user interface and the display screen operate in a menu-driven fashion, the combined content data being included in the menu and being sourced via the playback unit from any one or more of the separate computers.

6. The system of claim 1, wherein the playback unit combines the separate content data from the plurality of separate computers and communicates selected combined content data to the remote control device.

7. The system of claim 1, wherein the playback unit includes a plurality of different wireless network interfaces each of which communicates with a separate computer via a wireless network, and wherein each wireless network interface allows communication using a different communication protocol.

8. The system of claim 1, wherein the digital media includes at least one of audio files, video files and picture files and the separate content data identifies the files.

9. The system of claim 1, wherein the playback unit includes a first display data cache and the remote control device includes a second display data cache, the first display data cache including a subset of media content available from the plurality of separate computers and the second display data cache including a subset of data of the first display data cache.

10. The system of claim 1, wherein multiple threads are used to communicate the digital media via the wireless network to a plurality of playback units.

11. The system of claim 1, further comprising:

a separate second remote control device to control the playback of the digital media on the separate playback device via the playback unit, the second remote control device including;

a second complemental remote control communication interface for bi-directional communication with the remote control communication interface of the playback unit; and

a second display screen, wherein the second remote control device receives combined content data from the playback unit for display on the second display screen, wherein the playback unit combines separate content data received from each of the plurality of separate computers to provide the combined content data to the second remote control device, the separate content data identifying the digital media available on an associated separate computer for playback via the playback unit.

12. A playback unit for controlling playback of digital media under control of a separate remote control device, the playback unit including:

a wireless network interface to communicate via a wireless local area network with a plurality of local computers and to request and receive the digital media for playback, each local computer including at least one media storage device

a playback device interface to connect the playback unit to a separate playback device to render the digital media to a user, the connection between the playback unit and the playback device being independent of the wireless local area network; and

a bi-directional remote control communication interface in addition to the wireless network interface, the bi-directional remote control communication interface being operable to communicate combined content data for display on a display screen of, and receive a media data request from, the remote control device; and

a processor configured to determine whether the display screen of the remote control device needs to be updated based on the combined content data,

wherein the playback unit receives and combines separate content data communicated to the remote control device from each of the plurality of local computers via the wireless local area network, the combined content data identifying the digital media on the plurality of local computers for playback via the playback unit.

13. The playback unit of claim 12, wherein the wireless network interface communicates with the plurality of local computers via multiple threads, each thread being associated with a different local computer providing digital media for playback on a playback unit.

14. The playback unit of claim 12, wherein the remote control communication interface is one of a bi-directional optical interface and a radio frequency interface and wherein the display screen of the remote controls allows a user to select digital media independently of any display provided on the playback device connected to the playback unit.

15. The playback unit of claim 12, which includes a plurality of different wireless network interfaces, each of which is for communication with different local computer via the wireless local area network, and wherein each wireless network interface allows communication using a different communication protocol.

16. The playback unit of claim 15, which includes a discovered storage device table to identify media content storage devices that it discovers, and a corresponding processing thread for each storage device discovered, and wherein display data retrieved by each thread is combined prior to communicating it to the remote control device.

17. The playback unit of claim 12, wherein the playback unit includes a first display data cache from which display data is communicated to a second display data cache of the remote control device, the first display data cache including a subset of media content available from the and the second display data cache including a subset of the first display data cache.

18. A method to control playback of digital media on a separate playback device, the method including:

receiving separate content data at a playback unit via a wireless local area network from a plurality of local computers, the separate content data identifying digital media stored on a media storage device of an associated local computer

at the playback unit, combining the separate content data received from the plurality of local computers to provide combined content data;

at the playback unit, determining whether a display screen of a separate remote control device needs to be updated based on the combined content data;

communicating the combined content data via a bi-directional communication interface to the remote control device for display on the display screen of the remote control device;

monitoring user selection of selected digital media identified by the combined content data;

at the playback unit, determining whether the display screen of the remote control device needs to be updated based on the monitored user selection;

communicating the selected digital media received via the wireless local area network from any of the plurality of local computers to the playback unit; and

communicating the digital media from the playback unit to the playback device independently of the wireless local area network to cause the selected digital media to be played on the playback device.

19. The method of claim 18, which includes monitoring user selection of the selected digital media utilizing a user interface operating in conjunction with the display screen, the digital media being associated with one of a plurality of threads used to communicate digital content from the plurality of local computers via the wireless local area network.

20. The method of claim 19, wherein the user interface and the display screen operate in a menu-driven fashion, the combined content data being included in the menu and being sourced via the playback unit from any of the local computers and the display screen allows a user to select digital media independently of any display provided on the playback device.

21. The method of claim 18, which includes communicating with different local computers using different communication protocols.

22. The method of claim 18, which includes storing content data in a first display data cache of the playback unit and communicating a subset of the data in the first display data cache to a second display data cache of the remote control device, the first display data cache identifying a subset of media content available from the plurality of local computers.

23. A method of controlling playback of digital media via a separate playback unit under control of a separate remote control device, the method including:

receiving a content data request from the remote control device at the playback unit;

communicating the content data request from the playback unit via a wireless local area network to a plurality of local computers each including at least one media storage device;

receiving separate content data from each of the plurality of the local computers via the wireless local area network, the separate content data identifying media content available at an associated local computer for playback on the playback device;

at the playback unit, combining content data received from the plurality of local computers to provide combined content data;

communicating the combined content data to the remote control device for display on a display screen of the remote control device;

receiving a user selection for playback from the remote control device that identifies selected media content and causing the selected media content to be played on the separate playback device via a connection between the playback device and the playback unit that is independent of the wireless local area network; and

at the playback unit, determining whether the display screen of the remote control device needs to be updated based on the user selection or the combined content data.

24. The method of claim 23, wherein multiple threads are used to communicate the digital media via the wireless network to a plurality of playback devices.

25. The method of claim 23, which includes communicating with the remote control device via one of a bi-directional optical interface and a radio frequency interface, a display screen of the remote control device allowing a user to select digital media independently of any display provided on the playback device.

26. The method of claim 23, which includes communicating with different media storage devices using different communication protocols.

27. The method of claim 23, which includes storing separate content data in a first display data cache of the playback unit and communicating a subset of the data in the first display data cache to a second display data cache of the remote control device, the first display data cache identifying a subset of media content available from the plurality of local computers.

28. A non-transitory machine-readable medium storing instructions that, when executed by a machine, cause the machine to:

receive separate content data at a playback unit via a wireless local area network from a plurality of local computers, the separate content data relating to digital media stored on a media storage device of an associated local computer

at the playback unit, combine the separate content data received from the plurality of local computers to provide combined content data;

at the playback unit, determine whether a display screen of a separate remote control device needs to be updated based on the combined content data;

communicate the combined content data via a bi-directional communication interface to the remote control device for display on the display screen of the remote control device;

monitor user selection of selected digital media identified by the combined content data;

at the playback unit, determine whether the display screen of the remote control device needs to be updated based on the monitored user selection;

communicate the selected digital media received via the wireless local area network from any of the plurality of local computers to the playback unit; and

communicate the digital media from the playback unit to the playback device independently of the wireless local area network to cause the selected digital media to be played on the playback device.

29. A non-transitory machine-readable medium storing instructions that, when executed by a machine, cause the machine to:

receive a content data request from a remote control device at a playback unit;

communicate the content data request from the playback unit via a wireless local area network to a plurality of local computers each including at least one media storage device;

receive separate content data from each of the local computers via the wireless local area network, the separate content data identifying media content available at an associated local computer for playback on the playback device via a connection between the playback device and the playback unit that is independent of the wireless local area network;

combine the separate content data from the plurality of local computers;

communicate the combined content data to the remote control device for display on a display screen of the remote control device;

receive a user selection for playback from the remote control device that identifies selected media content and causing the selected media content to be played on the separate playback device; and

at the playback unit, determine whether the display screen of the remote control device needs to be updated based on the user selection or the combined content data.

30. A system to control playback of digital media on a separate playback device via a wireless local area network, the system including:

playback means including;

at least one wireless network interface to communicate via the wireless local area network with a plurality of separate computers and to receive the digital media for playback, each separate computer including at least one media storage device;

a playback device interface to connect the playback means to the separate playback device to render the media to a user, the connection between the playback means and the playback device being independent of the wireless local area network;

a bi-directional remote control communication interface in addition to the wireless network interface; and

a first processor configured to;

combine separate content data from the plurality of separate computers to provide the combined content data, and communicates the combined content data to a separate remote control means, the combined content data identifying the digital media available on the separate computers for playback via the playback means; and

determine whether a display means of the remote control means need to be updated based on the combined content data; and

the separate remote control means to control the playback of the digital media on the separate playback device via the playback means, the remote control means including;

a complemental remote control communication interface for bi-directional communication with the remote control communication interface of the playback means;

display means, wherein the remote control device receives combined content data from the playback means for display on the display means; and

a second processor for determining whether the display means need to be updated based on the received combined content data.

31. A system to control playback of digital media on a playback device, the system including:

a playback unit including;

a digital media storage communication interface to communicate with a plurality of separate computers and to receive the digital media for playback, the plurality of separate computers being to provide the digital media to a plurality of playback units; and

a playback device interface to connect the playback unit to the playback device to render the media to a user, the connection between the playback unit and the playback device being independent of the digital media storage communication interface;

a bi-directional remote control communication interface; and

a first processor configured to;

combine separate content data from the plurality of separate computers to provide the combined content data, and communicates the combined content data to a separate remote control device, the combined content data identifying the digital media available on the separate computers; and

determine whether a display screen of the remote control device needs to be updated based on the combined content data; and

the separate remote control device to control the playback of the digital media on the playback device via the playback unit, the remote control device including;

a complemental remote control communication interface for bi-directional communication with the remote control communication interface of the playback unit;

the display screen, wherein the remote control device receives combined content data from the playback unit for display on the display screen; and

a second processor for determining whether the display screen needs to be updated based on the received combined content data.

32. The system of claim 31, wherein the playback device is a device that is separate from the plurality of separate computers.

33. The system of claim 31, wherein the digital media storage communication interface is a wireless network interface to communicate with the plurality of separate computers via a wireless network, and multiple threads are used to communicate the digital content via the wireless network to the plurality of playback units.

34. The system of claim 31, wherein each playback unit requests media content from any of the separate computers in response to communications received from the remote control device.