Method and apparatus for providing user input back channel in audio/video system

• US 10,440,065 B2
• Filed: 09/26/2016
• Issued: 10/08/2019
• Est. Priority Date: 11/02/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Jae-min, Na, Il-ju
• Primary Examiner(s): Bruckart, Benjamin R
• Assistant Examiner(s): Tesfaye, Aklil
• Application Number:
  US15/275,920
• Publication Number:
  US 20170013027A1
• Time in Patent Office: 1,107 Days
• CPC Class Codes: H04L 65/1066 Session management
• CPC Class Codes: H04L 65/60 Network streaming of media packets
• CPC Class Codes: H04L 65/613 for the control of the source by the destination control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04L 67/104 Peer-to-peer [P2P] networks
• 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 21/43615 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 21/643 Communication protocols network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP], H04L65/65
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A method and apparatus for providing a user input back channel (UIBC) in an audio/video (AV) source device and an AV sink device communicating according to a wireless fidelity (Wi-Fi) display (WFD) standard is provided. The method includes: setting up an AV control session and an AV data session between the AV source devices according to the WFD standards; enabling the UIBC from the AV sink device to the AV source device by using the AV control session; and transmitting a user input from the AV sink device to the AV source device through the UIBC.

Claims

1. A method of communicating with an audio/video (AV) source device, wherein the method is performed by an AV sink device, the method comprising:

performing a device discovery procedure with the AV source device;

receiving a request, from the AV source device, related to a User Input Back Channel (UIBC) capability of the AV sink device;

transmitting a response related to the UIBC capability of the AV sink device to the AV source device;

receiving a request including UIBC setting information from the AV source device;

enabling a user input back channel (UIBC) based on the UIBC setting information;

transmitting a response related to the enabled UIBC to the AV source device; and

transmitting user input information received by the AV sink device to the AV source device through the UIBC.

2. The method of claim 1, wherein the user input information comprises at least one of a function code for controlling the AV source device, pointing information, and character data.

3. The method of claim 1, wherein the performing device discovery procedure comprises setting up an AV control session and an AV data session and wherein the AV control session comprises a real-time streaming protocol (RTSP).

4. The method of claim 1, wherein the UIBC capability of the AV sink device comprises at least one of a real-time streaming protocol (RTSP), a real-time transport protocol (RTP), Bluetooth, Zigbee, and digital living network association (DLNA).

5. The method of claim 1, wherein the transmitting of the user input information comprises transmitting data and control information about the user input information through a wireless fidelity display (WFD) session.

6. The method of claim 5, wherein the WFD session comprises at least one of a real-time transport protocol (RTP) session, a Bluetooth session, a Zigbee session, and a digital living network association (DLNA) session.

7. The method of claim 6, wherein the transmitting of the user input information further comprises transmitting control information about the user input through the DLNA session.

8. The method of claim 1, wherein the UIBC setting information comprises a UIBC enable request or a UIBC disable request.

9. The method of claim 1, further comprising notifying disablement of the UIBC to the AV source device.

10. The method of claim 1, wherein the response related to the UIBC capability of the AV sink device includes at least one from among information about whether a UIBC is supported, information about a supported UIBC path, and information about a supported user input data type.

11. A method of communicating with an audio/video (AV) sink device, wherein the method is performed by an AV source device, the method comprising:

performing a device discovery procedure with the AV sink device;

transmitting a request, to the AV sink device, related to a User Input Back Channel (UIBC) capability of the AV sink device;

receiving a response related to the UIBC capability of the AV sink device from the AV sink device;

transmitting a request including UIBC setting information to the to the AV sink device;

receiving a response related to a UIBC enabled by the AV sink device from the AV sink device; and

receiving user input information received by the AV sink device from the AV sink device through the UIBC.

12. The method of claim 11, wherein the user input information comprises at least one of a function code for controlling the AV source device, pointing information, and character data.

13. The method of claim 11, wherein the performing device discovery procedure comprises setting up an AV control session and an AV data session and wherein the AV control session comprises a real-time streaming protocol (RTSP).

14. The method of claim 11, wherein the UIBC capability of the AV sink device comprises at least one of real-time streaming protocol (RTSP), real-time transport protocol (RTP), Bluetooth, Zigbee, and digital living network association (DLNA).

15. The method of claim 11, wherein the UIBC setting information comprises a UIBC enable request or a UIBC disable request.