WIRELESS DISPLAY SOURCE DEVICE AND SINK DEVICE

• US 20140003490A1
• Filed: 06/27/2013
• Published: 01/02/2014
• Est. Priority Date: 06/28/2012
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: CHO, Jun-Young, GAO, Jian, LEE, Shin-Won, JUNG, Pyoung-Jae
• Application Number:
  US13/928,869
• Publication Number:
  US 20140003490A1
• Time in Patent Office: Days
• US Class Current: 375/240.02
• CPC Class Codes: H04N 19/12 Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
• CPC Class Codes: H04N 19/156 Availability of hardware or computational resources, e.g. encoding based on power-saving criteria
• CPC Class Codes: H04N 19/179 the unit being a scene or a shot

Abstract

There is provided a wireless display source device comprising, an encoder which encodes a first multimedia signal according to a first scheme to generate a first encoded multimedia signal, and encodes a second multimedia signal different from the first multimedia signal according to a second scheme to generate a second encoded multimedia signal, a controller which sets an encoding scheme of the encoder such that the first scheme is different from the second scheme, and a wireless interface which transmits the encoded multimedia signal to a wireless display sink device.

Claims

1. A wireless display source device comprising:

an encoder which encodes a first multimedia signal according to a first scheme to generate a first encoded multimedia signal, and encodes a second multimedia signal different from the first multimedia signal according to a second scheme to generate a second encoded multimedia signal;

a controller which sets an encoding scheme of the encoder such that the first scheme is different from the second scheme; and

a wireless interface which transmits the encoded multimedia signals to a wireless display sink device.

2. The wireless display source device of claim 1, wherein the encoder receives the multimedia signals from an application, and

the controller determines a type of the application, and sets the respective encoding schemes of the encoder according to the determined type of the application.

3. The wireless display source device of claim 2, wherein the controller determines the type of the application based on state information of a communication module, a decoder, and a graphic engine used by the application.

4. The wireless display source device of claim 2, wherein the controller includes a preset selection unit which selects a preset determined in advance according to the type of the application, and an encoder setting unit which sets the encoding scheme according to the selected preset.

5. The wireless display source device of claim 4, wherein the preset determined in advance includes an audio codec corresponding to the type of the application.

6. The wireless display source device of claim 1, wherein the encoder receives the multimedia signals from an application, and

the controller sets the encoding scheme of the encoder based on system utilization information of the application.

7. The wireless display source device of claim 6, wherein the system utilization information of the application includes state information of a communication module, a decoder, and a graphic engine used by the application.

8. The wireless display source device of claim 6, wherein the controller includes a profile calculating unit which calculates a target profile based on the system utilization information of the application, and an encoder setting unit which sets the encoding scheme according to the calculated profile.

9. The wireless display source device of claim 1, wherein the encoder receives the multimedia signals from an application, and

the controller sets the encoding scheme of the encoder according to a user setting stored in advance.

10. A wireless display source device comprising:

an encoder which receives and encodes a multimedia signal to generate an encoded multimedia signal;

a controller which changes an encoding scheme of the multimedia signal by setting encoding parameters of the encoder according to system utilization information; and

a wireless interface which transmits the encoded multimedia signal to a wireless display sink device.

11. The wireless display source device of claim 10, wherein the encoder receives the multimedia signal from an application, and

the system utilization information includes state information of a communication module, a decoder, and a graphic engine used by the application.

12. The wireless display source device of claim 10, wherein the encoding parameters include response time and quality.

13. The wireless display source device of claim 12, wherein the controller includes a preset selection unit which selects a preset determined in advance according to a type of the application, and an encoder setting unit which sets the response time or the quality according to the selected preset.

14. The wireless display source device of claim 12, wherein the encoder determines a compression ratio for encoding the multimedia signal according to at least one of the response time and the quality.

15. The wireless display source device of claim 12, wherein the encoder determines a frame size of the encoded multimedia signal according to at least one of the response time and the quality.

16. A wireless display source device, comprising:

an encoder to receive and encode a multimedia signal;

a controller to select an encoding scheme for the encoder from a plurality of stored encoding profiles; and

a wireless interface which transmits the encoded multimedia signal to a wireless display sink device;

wherein the plurality of stored encoding profiles vary in terms of audio and video encoding formats associated with respective profiles.

17. The wireless display source device of claim 16, further comprising a display panel to display video data related to the multimedia signal.

18. The wireless display source device of claim 16, further comprising a speaker to produce audio data related to the multimedia signal.

19. The wireless display source device of claim 16,

wherein the encoder is connected to receive the multimedia signal from an application;

and

wherein the controller is configured to dynamically select an encoding profile for the application having video and audio settings optimal for the application.

20. The wireless display source device of claim 19, wherein the controller is configured to select the optimal encoding profile based on an evaluation of audio response time, audio quality, video response time, and video quality.