Device and method for transmitting and receiving data using HDMI

Patent metadata

Field	Value
Publication number	US-10085058-B2
Application number	US-201515518954-A
Country	US
Kind code	B2
Filing date	Oct 13, 2015
Priority date	Oct 14, 2014
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

A method for a source device transmitting data by using HDMI (High Definition Media Interface) to transmit and receive data is disclosed. A method for an HDMI source device to transmit and receive data comprises transmitting, to a sink device, a request for reading out EDID (Extended Display Identification Data) if the sink device is connected; receiving, from the sink device, EDID including port information of the sink device; transmitting operation parameter information determined based on the EDID; and transmitting data through HDMI.

First claim

The invention claimed is:

1. A method for a source device transmitting and receiving audio/video data by using a High Definition Media Interface (HDMI), the method comprising:
transmitting, to a sink device, a request for reading out Extended Display Identification Data (EDID) if the sink device is connected;
receiving, from the sink device, the EDID including port information regarding a plurality of ports of the sink device, wherein the port information includes a port number of a port connected to the source device among the plurality of ports and feature information for each of the plurality of ports;
determining whether the port supports a specific function of the source device and operation parameter information for the audio/video data, by parsing the received EDID;
if the port supports the specific function of the source device, transmitting, to the sink device, the determined operation parameter information; and
transmitting, to the sink device, the audio/video data controlled by the determined operation parameter information.

2. The method of claim 1 , wherein the feature information includes feature information of a port to which an HDMI cable is currently connected and feature information for at least one other port to which no HDMI cable is connected at the moment.

3. The method of claim 1 , wherein the port information is received by being included in an HDMI Forum-Vendor Specific Data Block (HF-VSDB) or Consumer Electronics Control (CEC) extension block.

4. The method of claim 1 , wherein the port information further includes at least one of the total number of physical ports of the sink device and at least one feature indicator for the plurality of ports.

5. The method of claim 1 , further comprising, if the port does not support the specific function of the source device, providing a user interface indicating other port information that supports the specific function.

6. A source device transmitting and receiving audio/video data by using a High Definition Media Interface (HDMI), the source device comprising:
a HDMI transmitter transmitting and receiving data through the HDMI; and
a controller controlling data communication through the HDMI transmitter, wherein the source device is configured to:
transmit, to a sink device, a request for reading out Extended Display Identification Data (EDID) if the sink device is connected,
receive, from the sink device, the EDID including port information regarding a plurality of ports of the sink device, wherein the port information includes a port number of a port connected to the source device among the plurality of ports and feature information for each of the plurality of ports,
determine whether the port supports a specific function of the source device and the determined operation parameter information for the audio/video data, by parsing the received EDID,
if the port supports the specific function of the source device, transmit, to the sink device, the operation parameter information determined based on the EDID, and
transmit, to the sink device, the audio/video data controlled by the determined operation parameter information.

7. The source device of claim 6 , wherein the feature information includes feature information of a port to which an HDMI cable is currently connected and feature information for at least one other port to which no HDMI cable is connected at the moment.

8. The source device of claim 6 , wherein the port information is received by being included in an HDMI Forum-Vendor Specific Data Block (HF-VSDB) or Consumer Electronics Control (CEC) extension block.

9. The source device of claim 6 , wherein the port information further includes at least one of the total number of physical ports of the sink device and at least one feature indicator for the plurality of ports.

10. The source device of claim 6 , wherein, if the port does not support the specific function of the source device, the controller is configured to provide a user interface indicating other port information that supports the specific function.

11. A method for a sink device transmitting and receiving audio/video data by using a High Definition Media Interface (HDMI), the method comprising:
receiving, from a source device connected with the sink device, a request for reading out Extended Display Identification Data (EDID);
transmitting, to the source device, the EDID including port information regarding a plurality of ports of the sink device, wherein the port information includes a port number of a port connected to the source device among the plurality of ports and feature information for each of the plurality of ports;
if the port supports a specific function of the source device, receiving, from the source device, operation parameter information determined by parsing the EDID; and
receiving, from the source device, the audio/video data controlled by the operation parameter information.

12. The method of claim 11 , wherein the feature information includes feature information of a port to which an HDMI cable is currently connected and feature information for at least one other port to which no HDMI cable is connected at the moment.

13. The method of claim 11 , wherein the port information is transmitted by being included in a HDMI Forum-Vendor Specific Data Block (HF-VSDB) or Consumer Electronics Control (CEC) extension block.

14. The method of claim 11 , wherein the port information further includes at least one of the total number of physical ports of the sink device and at least one feature indicator for the plurality of ports.

15. The method of claim 11 , wherein, if the port does not support the specific function of the source device, a user interface indicating other port information that supports the specific function is provided by the source device.

16. A sink device transmitting and receiving audio/video data by using a High Definition Media Interface (HDMI), the sink device comprising:
a HDMI receiver transmitting and receiving data through the HDMI; and
a controller controlling data communication through the HDMI receiver, wherein the sink device is configured to:
receive, from a source device connected with the sink device, a request for reading out Extended Display Identification Data (EDID),
transmit, to the source device, the EDID including port information regarding a plurality of ports of the sink device, wherein the port information includes a port number of a port connected to the source device among the plurality of ports and feature information for each of the plurality of ports,
if the port supports a specific function of the source device, receive from the source device, operation parameter information determined by parsing the EDID, and
receive, from the source device, the audio/video data controlled by the operation parameter information.

17. The sink device of claim 16 , wherein the feature information includes feature information of a port to which an HDMI cable is currently connected and feature information for at least one other port to which no HDMI cable is connected at the moment.

18. The sink device of claim 16 , wherein the port information is transmitted by being included in an HDMI Forum-Vendor Specific Data Block (HF-VSDB) or Consumer Electronics Control (CEC) extension block.

19. The sink device of claim 16 , wherein the port information further includes at least one of the total number of physical ports of the sink device and at least one feature indicator for the plurality of ports.

20. The sink device of claim 16 ,

Assignees

• Lg Electronics Inc

Inventors

• Lee Hyeonjae
• Park Jangwoong
• Yang Hyunsik

Classifications

• H04N21/472

  End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content {(end-user interfaces for retrieving video data from a database G06F16/739; network services for supporting unicast streaming H04L65/612)} · CPC title

• H04N21/4394

  involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams (arrangements characterised by components specially adapted for monitoring, identification or recognition of audio in broadcast systems H04H60/58) · CPC title

• H04N21/43635 Primary

  HDMI · CPC title

• H04N21/43632 Primary

  involving a wired protocol, e.g. IEEE 1394 (high-speed IEEE 1394 serial bus H04L12/40052) · CPC title

• G09G2370/047

  using display data channel standard [DDC] communication · CPC title